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Ahmadi Khoshooei M, Wang X, Vitale G, Formalik F, Kirlikovali KO, Snurr RQ, Pereira-Almao P, Farha OK. An active, stable cubic molybdenum carbide catalyst for the high-temperature reverse water-gas shift reaction. Science 2024; 384:540-546. [PMID: 38696554 DOI: 10.1126/science.adl1260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 03/28/2024] [Indexed: 05/04/2024]
Abstract
Although technologically promising, the reduction of carbon dioxide (CO2) to produce carbon monoxide (CO) remains economically challenging owing to the lack of an inexpensive, active, highly selective, and stable catalyst. We show that nanocrystalline cubic molybdenum carbide (α-Mo2C), prepared through a facile and scalable route, offers 100% selectivity for CO2 reduction to CO while maintaining its initial equilibrium conversion at high space velocity after more than 500 hours of exposure to harsh reaction conditions at 600°C. The combination of operando and postreaction characterization of the catalyst revealed that its high activity, selectivity, and stability are attributable to crystallographic phase purity, weak CO-Mo2C interactions, and interstitial oxygen atoms, respectively. Mechanistic studies and density functional theory (DFT) calculations provided evidence that the reaction proceeds through an H2-aided redox mechanism.
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Affiliation(s)
- Milad Ahmadi Khoshooei
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
- Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Xijun Wang
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Gerardo Vitale
- Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Filip Formalik
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, 60208, USA
- Department of Micro, Nano and Bioprocess Engineering, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
| | - Kent O Kirlikovali
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
| | - Randall Q Snurr
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Pedro Pereira-Almao
- Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Omar K Farha
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, 60208, USA
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2
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Kountoupi E, Barrios AJ, Chen Z, Müller CR, Ordomsky VV, Comas-Vives A, Fedorov A. The Impact of Oxygen Surface Coverage and Carbidic Carbon on the Activity and Selectivity of Two-Dimensional Molybdenum Carbide (2D-Mo 2C) in Fischer-Tropsch Synthesis. ACS Catal 2024; 14:1834-1845. [PMID: 38327645 PMCID: PMC10845113 DOI: 10.1021/acscatal.3c03956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 12/20/2023] [Accepted: 01/03/2024] [Indexed: 02/09/2024]
Abstract
Transformations of oxygenates (CO2, CO, H2O, etc.) via Mo2C-based catalysts are facilitated by the high oxophilicity of the material; however, this can lead to the formation of oxycarbides and complicate the identification of the (most) active catalyst state and active sites. In this context, the two-dimensional (2D) MXene molybdenum carbide Mo2CTx (Tx are passivating surface groups) contains only surface Mo sites and is therefore a highly suitable model catalyst for structure-activity studies. Here, we report that the catalytic activity of Mo2CTx in Fischer-Tropsch (FT) synthesis increases with a decreasing coverage of surface passivating groups (mostly O*). The in situ removal of Tx species and its consequence on CO conversion is highlighted by the observation of a very pronounced activation of Mo2CTx (pretreated in H2 at 400 °C) under FT conditions. This activation process is ascribed to the in situ reductive defunctionalization of Tx groups reaching a catalyst state that is close to 2D-Mo2C (i.e., a material containing no passivating surface groups). Under steady-state FT conditions, 2D-Mo2C yields higher hydrocarbons (C5+ alkanes) with 55% selectivity. Alkanes up to the kerosine range form, with value of α = 0.87, which is ca. twice higher than the α value reported for 3D-Mo2C catalysts. The steady-state productivity of 2D-Mo2C to C5+ hydrocarbons is ca. 2 orders of magnitude higher relative to a reference β-Μo2C catalyst that shows no in situ activation under identical FT conditions. The passivating Tx groups of Mo2CTx can be reductively defunctionalized also by using a higher H2 pretreatment temperature of 500 °C. Yet, this approach leads to a removal of carbidic carbon (as methane), resulting in a 2D-Mo2C1-x catalyst that converts CO to CH4 with 61% selectivity in preference to C5+ hydrocarbons that are formed with only 2% selectivity. Density functional theory (DFT) results attribute the observed selectivity of 2D-Mo2C to C5+ alkanes to a higher energy barrier for the hydrogenation of surface alkyl species relative to the energy barriers for C-C coupling. The removal of O* is the rate-determining step in the FT reaction over 2D-Mo2C, and O* is favorably removed in the form of CO2 relative to H2O, consistent with the observation of a high CO2 selectivity (ca. 50%). The absence of other carbon oxygenates is explained by the energetic favoring of the direct over the hydrogen-assisted dissociative adsorption of CO.
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Affiliation(s)
- Evgenia Kountoupi
- Department
of Mechanical and Process Engineering, ETH
Zürich, Zürich CH-8092, Switzerland
| | - Alan J. Barrios
- University
of Lille, CNRS, Centrale Lille, University of Artois, UMR 8181 −
UCCS − Unité de Catalyse et Chimie du Solide, Lille 59000, France
- Laboratory
for Chemical Technology, Department of Materials, Textiles and Chemical
Engineering, Ghent University, Ghent B-9052, Belgium
| | - Zixuan Chen
- Department
of Mechanical and Process Engineering, ETH
Zürich, Zürich CH-8092, Switzerland
| | - Christoph R. Müller
- Department
of Mechanical and Process Engineering, ETH
Zürich, Zürich CH-8092, Switzerland
| | - Vitaly V. Ordomsky
- University
of Lille, CNRS, Centrale Lille, University of Artois, UMR 8181 −
UCCS − Unité de Catalyse et Chimie du Solide, Lille 59000, France
| | - Aleix Comas-Vives
- Institute
of Materials Chemistry, Technische Universität
Wien, Vienna 1060, Austria
- Departament
de Química, Universitat Autònoma
de Barcelona, Cerdanyola del Vallès 08193, Catalonia, Spain
| | - Alexey Fedorov
- Department
of Mechanical and Process Engineering, ETH
Zürich, Zürich CH-8092, Switzerland
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3
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Iisa K, Mukarakate C, French RJ, Agblevor FA, Santosa DM, Wang H, Wilson AN, Christensen E, Griffin MB, Schaidle JA. From Biomass to Fuel Blendstocks via Catalytic Fast Pyrolysis and Hydrotreating: An Evaluation of Carbon Efficiency and Fuel Properties for Three Pathways. ENERGY & FUELS : AN AMERICAN CHEMICAL SOCIETY JOURNAL 2023; 37:19653-19663. [PMID: 38149087 PMCID: PMC10749445 DOI: 10.1021/acs.energyfuels.3c03239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 11/09/2023] [Accepted: 11/10/2023] [Indexed: 12/28/2023]
Abstract
Biomass was upgraded to fuel blendstocks via catalytic fast pyrolysis (CFP) followed by hydrotreating using three approaches: ex situ CFP with a zeolite catalyst (HZSM-5), ex situ CFP with a hydrodeoxygenation catalyst (Pt/TiO2) and cofed hydrogen, and in situ CFP with a low-cost mixed metal oxide catalyst (red mud). Each approach was evaluated using a common pine feedstock and the same hydrotreating procedure. The oxygen contents in the CFP oils ranged from 17 to 28 wt % on a dry basis, and the carbon efficiencies for the CFP processes were in the range of 28-38%. The residual oxygen was reduced to <1 wt % during hydrotreating, which was operated for 104-140 h for each CFP oil without plugging issues. The hydrotreating carbon efficiencies were 81-93%. The CFP pathway with the hydrodeoxygenation catalyst gave the highest overall carbon efficiency from biomass to fuel blendstocks (34%) but, at the same time, also the highest cumulative hydrogen consumption during CFP and hydrotreating. The zeolite pathway produced the largest fraction boiling in the gasoline range and the highest estimated octane number due to the high aromatic content in that CFP oil. The in situ red mud pathway produced the largest fraction of diesel-range products with the highest derived cetane number. However, advances in the CFP and hydrotreating process are required to improve the fuel blendstock properties for all pathways.
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Affiliation(s)
- Kristiina Iisa
- National
Renewable Energy Laboratory, Golden, Colorado 80403, United States
| | - Calvin Mukarakate
- National
Renewable Energy Laboratory, Golden, Colorado 80403, United States
| | - Richard J. French
- National
Renewable Energy Laboratory, Golden, Colorado 80403, United States
| | | | - Daniel M. Santosa
- Pacific
Northwest National Laboratory, Richland, Washington 99354, United States
| | - Huamin Wang
- Pacific
Northwest National Laboratory, Richland, Washington 99354, United States
| | - A. Nolan Wilson
- National
Renewable Energy Laboratory, Golden, Colorado 80403, United States
| | - Earl Christensen
- National
Renewable Energy Laboratory, Golden, Colorado 80403, United States
| | - Michael B. Griffin
- National
Renewable Energy Laboratory, Golden, Colorado 80403, United States
| | - Joshua A. Schaidle
- National
Renewable Energy Laboratory, Golden, Colorado 80403, United States
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4
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Adsorption and infrared spectra simulations of acrylic acid over (001) surface of molybdenum carbide. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2022.111798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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5
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Lin H, Sun P, Xu Y, Zong X, Yang H, Liu X, Zhao H, Tan L, Wu L, Tang Y. Enhanced selective cleavage of aryl C-O bond by atomically dispersed Pt on α-MoC for hydrodeoxygenation of anisole. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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7
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Fang B, Zhang C, Qi Z, Li C, Ni J, Wang X, Lin J, Au C, Lin B, Jiang L. Combining molybdenum carbide with ceria overlayers to boost Mo/
CeO
2
catalyzed ammonia synthesis. AIChE J 2022. [DOI: 10.1002/aic.17849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Biyun Fang
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering Fuzhou University Fuzhou Fujian China
| | - Chuanfeng Zhang
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering Fuzhou University Fuzhou Fujian China
| | - Zeliang Qi
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering Fuzhou University Fuzhou Fujian China
| | - Chunyan Li
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering Fuzhou University Fuzhou Fujian China
| | - Jun Ni
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering Fuzhou University Fuzhou Fujian China
| | - Xiuyun Wang
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering Fuzhou University Fuzhou Fujian China
| | - Jianxin Lin
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering Fuzhou University Fuzhou Fujian China
| | - Chak‐tong Au
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering Fuzhou University Fuzhou Fujian China
| | - Bingyu Lin
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering Fuzhou University Fuzhou Fujian China
| | - Lilong Jiang
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering Fuzhou University Fuzhou Fujian China
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8
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The interaction of molybdenum and titanium in mesoporous materials for olefin epoxidation. REACTION KINETICS MECHANISMS AND CATALYSIS 2022. [DOI: 10.1007/s11144-021-02147-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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10
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Towards continuous deoxygenation of acetic acid catalyzed by recyclable mono/bi/trimetallic zeolite catalysts. J Catal 2021. [DOI: 10.1016/j.jcat.2021.07.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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A DFT study of methane conversion on Mo-terminated Mo2C carbides: Carburization vs C–C coupling. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.02.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Palladium-Incorporated α-MoC Mesoporous Composites for Enhanced Direct Hydrodeoxygenation of Anisole. Catalysts 2021. [DOI: 10.3390/catal11030370] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Hydrodeoxygenation (HDO) is one of the promising catalytic routes for converting biomass derived molecules to high value products. A key step of HDO is the cleavage of an aromatic C–O bond to accomplish the deoxygenation step, however, which is energetically unfavorable. Herein, we report a series of palladium (Pd)-incorporated α-phase of molybdenum carbide (α-MoC) mesoporous composites for enhanced HDO activity of a biomass model molecule, anisole. The catalysts, x%Pd/α-MoC (x% is the molar ratio of Pd/Mo), were investigated by X-ray diffraction (XRD), temperature programmed reduction (TPR), temperature programmed desorption (TPD), Brunauer–Emmett–Teller (BET), Raman, transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) techniques. Pd is highly dispersed on α-MoC when x% ≤ 1%, but aggregate to form nanoparticles when x% = 5%. The x%Pd/α-MoC catalysts (x% ≤ 1%) show enhanced HDO activity in terms of turnover frequency (TOF) and apparent activation energy barrier (Ea) compared with α-MoC and β-Mo2C catalysts. The TOF of 1%Pd/α-MoC catalyst at 160 °C is 0.115 h−1 and the Ea is 48.2 kJ/mol. Moreover, the direct cleavage of aromatic C–O bond is preferred on 1%Pd/α-MoC catalyst. The enhanced HDO activity is attributed to superior H2 dissociation ability by the highly dispersed Pd sites on carbide. This work brings new insights for rational design of the catalyst for selective C–O bond activation.
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13
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Insights on alkylidene formation on Mo2C: A potential overlap between direct deoxygenation and olefin metathesis. J Catal 2021. [DOI: 10.1016/j.jcat.2020.11.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Kurlov A, Deeva EB, Abdala PM, Lebedev D, Tsoukalou A, Comas-Vives A, Fedorov A, Müller CR. Exploiting two-dimensional morphology of molybdenum oxycarbide to enable efficient catalytic dry reforming of methane. Nat Commun 2020; 11:4920. [PMID: 33009379 PMCID: PMC7532431 DOI: 10.1038/s41467-020-18721-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 08/31/2020] [Indexed: 11/16/2022] Open
Abstract
The two-dimensional morphology of molybdenum oxycarbide (2D-Mo2COx) nanosheets dispersed on silica is found vital for imparting high stability and catalytic activity in the dry reforming of methane. Here we report that owing to the maximized metal utilization, the specific activity of 2D-Mo2COx/SiO2 exceeds that of other Mo2C catalysts by ca. 3 orders of magnitude. 2D-Mo2COx is activated by CO2, yielding a surface oxygen coverage that is optimal for its catalytic performance and a Mo oxidation state of ca. +4. According to ab initio calculations, the DRM proceeds on Mo sites of the oxycarbide nanosheet with an oxygen coverage of 0.67 monolayer. Methane activation is the rate-limiting step, while the activation of CO2 and the C-O coupling to form CO are low energy steps. The deactivation of 2D-Mo2COx/SiO2 under DRM conditions can be avoided by tuning the contact time, thereby preventing unfavourable oxygen surface coverages.
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Affiliation(s)
- Alexey Kurlov
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, CH 8092, Zürich, Switzerland
| | - Evgeniya B Deeva
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, CH 8092, Zürich, Switzerland
| | - Paula M Abdala
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, CH 8092, Zürich, Switzerland
| | - Dmitry Lebedev
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, CH 8093, Zürich, Switzerland
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Athanasia Tsoukalou
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, CH 8092, Zürich, Switzerland
| | - Aleix Comas-Vives
- Department of Chemistry, Universitat Autònoma de Barcelona, 08193, Cerdanyola del Vallès, Catalonia, Spain.
| | - Alexey Fedorov
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, CH 8092, Zürich, Switzerland.
| | - Christoph R Müller
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, CH 8092, Zürich, Switzerland.
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15
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Kurlov A, Huang X, Deeva EB, Abdala PM, Fedorov A, Müller CR. Molybdenum carbide and oxycarbide from carbon-supported MoO 3 nanosheets: phase evolution and DRM catalytic activity assessed by TEM and in situ XANES/XRD methods. NANOSCALE 2020; 12:13086-13094. [PMID: 32542244 DOI: 10.1039/d0nr02908d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Molybdenum carbide (β-Mo2C) supported on carbon spheres was prepared via a carbothermal hydrogen reduction (CHR) method from delaminated nanosheets of molybdenum(vi) oxide (d-MoO3/C). The carburization process was followed by combined in situ XANES/XRD analysis revealing the formation of molybdenum oxycarbide Mo2CxOy as an intermediate phase during the transformation of d-MoO3/C to β-Mo2C/C. It was found that Mo2CxOy could not be completely carburized to β-Mo2C under a He atmosphere at 750 °C, instead a reduction in H2 is required. The β-Mo2C/C obtained showed activity and stability for the dry reforming of methane at 800 °C and 8 bar. In situ XANES/XRD evaluation of the catalyst under DRM reaction conditions combined with high resolution TEM analysis revealed the evolution of β-Mo2C/C to Mo2CxOy/C. Notably, the gradual oxidation of β-Mo2C/C to Mo2CxOy/C correlates directly with the increased activity of the competing reverse water gas shift reaction.
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Affiliation(s)
- Alexey Kurlov
- ETH Zürich, Department of Mechanical and Process Engineering, Leonhardstrasse 21, CH 8092 Zürich, Switzerland.
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16
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Hamdan MA, Lilic A, Vecino-Mantilla M, Nikitine C, Vilcocq L, Jahjah M, Pinel C, Perret N. Influence of Reduction–Carburization Parameters on the Performance of Supported Molybdenum Carbide Catalysts in Succinic Acid Hydrogenation. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01934] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Marwa Abou Hamdan
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626 Villeurbanne, France
| | - Aleksandra Lilic
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626 Villeurbanne, France
| | | | - Clémence Nikitine
- Univ Lyon, Université Claude Bernard Lyon 1, CPE-Lyon, LGPC, F-69616 Villeurbanne, France
| | - Léa Vilcocq
- Univ Lyon, Université Claude Bernard Lyon 1, CPE-Lyon, LGPC, F-69616 Villeurbanne, France
| | - Mohamad Jahjah
- LCIO, Laboratoire de Chimie de Coordination Inorganique et Organométallique, Université Libanaise-Faculté des Sciences I, Beyrouth, Liban
| | - Catherine Pinel
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626 Villeurbanne, France
| | - Noémie Perret
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626 Villeurbanne, France
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17
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Zheng Y, Tang Z, Podkolzin SG. Catalytic Platinum Nanoparticles Decorated with Subnanometer Molybdenum Clusters for Biomass Processing. Chemistry 2020; 26:5174-5179. [DOI: 10.1002/chem.202000139] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/15/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Yiteng Zheng
- Department of Chemical Engineering and Materials Science Stevens Institute of Technology Hoboken New Jersey 07030 USA
| | - Ziyu Tang
- Department of Chemical Engineering and Materials Science Stevens Institute of Technology Hoboken New Jersey 07030 USA
| | - Simon G. Podkolzin
- Department of Chemical Engineering and Materials Science Stevens Institute of Technology Hoboken New Jersey 07030 USA
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18
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Blanco E, Aguirre-Abarca DA, Díaz de León JN, Escalona N. Relevant aspects of the conversion of guaiacol as a model compound for bio-oil over supported molybdenum oxycarbide catalysts. NEW J CHEM 2020. [DOI: 10.1039/d0nj02531c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Molybdenum supported over activated carbon has been carburized under carbothermal hydrogen reduction conditions at different temperatures in order to modify the carburization degree and evaluated for guaiacol conversion.
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Affiliation(s)
- Elodie Blanco
- Departamento de Ingeniería Química y Bioprocesos
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
- Millenium Nuclei on Catalytic Processes towards Sustainable Chemistry (CSC)
| | - Diego A. Aguirre-Abarca
- Millenium Nuclei on Catalytic Processes towards Sustainable Chemistry (CSC)
- Santiago
- Chile
- Departamento de Química Física
- Facultad de Química y de Farmacia
| | - J. Noé Díaz de León
- Universidad Nacional Autónoma de México
- Centro de Nanociencias y Nanotecnología
- Mexico
| | - Néstor Escalona
- Departamento de Ingeniería Química y Bioprocesos
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
- Millenium Nuclei on Catalytic Processes towards Sustainable Chemistry (CSC)
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19
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Zhu J, Uslamin EA, Kosinov N, Hensen EJM. Tuning the reactivity of molybdenum (oxy)carbide catalysts by the carburization degree: CO 2 reduction and anisole hydrodeoxygenation. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00484g] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Structure-performance relations for molybdenum (oxy)carbide catalysts evaluated for CO2 hydrogenation and anisole hydrodeoxygenation.
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Affiliation(s)
- Jiadong Zhu
- Laboratory of Inorganic Materials and Catalysis
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- Eindhoven
- The Netherlands
| | - Evgeny A. Uslamin
- Laboratory of Inorganic Materials and Catalysis
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- Eindhoven
- The Netherlands
| | - Nikolay Kosinov
- Laboratory of Inorganic Materials and Catalysis
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- Eindhoven
- The Netherlands
| | - Emiel J. M. Hensen
- Laboratory of Inorganic Materials and Catalysis
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- Eindhoven
- The Netherlands
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20
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Zhang T, Yang X, Ge Q. CH4 dissociation and C C coupling on Mo-terminated MoC surfaces: A DFT study. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.03.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Oliveira RR, Rocha AB. Acrylic acid hydrodeoxygenation reaction mechanism over molybdenum carbide studied by DFT calculations. J Mol Model 2019; 25:309. [DOI: 10.1007/s00894-019-4186-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 08/27/2019] [Indexed: 11/25/2022]
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22
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Oxygen content as a variable to control product selectivity in hydrodeoxygenation reactions on molybdenum carbide catalysts. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2018.12.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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23
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Activated Carbon, Carbon Nanofibers and Carbon-Covered Alumina as Support for W2C in Stearic Acid Hydrodeoxygenation. CHEMENGINEERING 2019. [DOI: 10.3390/chemengineering3010024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Carbon materials play a crucial role in sorbents and heterogeneous catalysis and are widely used as catalyst support for several reactions. This paper reports on an investigation of tungsten carbide (W2C) catalyst on three types of carbon support, namely activated carbon (AC), carbon nanofibers (CNF) and carbon-covered alumina (CCA). We evaluated their activity and selectivity in stearic acid hydrodeoxygenation at 350 °C and 30 bar H2. Although all three W2C catalysts displayed similar intrinsic catalytic activities, the support did influence product distribution. At low conversions (<5%), W2C/AC yielded the highest amount of oxygenates relative to W2C/CNF and W2C/CCA. This suggests that the conversion of oxygenates into hydrocarbons is more difficult over W2C/AC than over W2C/CNF and W2C/CCA, which we relate to the lower acidity and smaller pore size of W2C/AC. The support also had an influence on the C18-unsaturated/C18-saturated ratio. At conversions below 30%, W2C/CNF presented the highest C18-unsaturated/C18-saturated ratio in product distribution, which we attribute to the higher mesopore volume of CNF. However, at higher conversions (>50%), W2C/CCA presented the highest C18-unsaturated/C18-saturated ratio in product distribution, which appears to be linked to W2C/CCA having the highest ratio of acid/metallic sites.
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Shi H. Valorization of Biomass‐derived Small Oxygenates: Kinetics, Mechanisms and Site Requirements of H2‐involved Hydrogenation and Deoxygenation Pathways over Heterogeneous Catalysts. ChemCatChem 2019. [DOI: 10.1002/cctc.201801828] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hui Shi
- Department of Chemistry, Catalysis Research CenterTechnical University Munich Lichtenbergstrasse 4 85747 Garching Germany
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25
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Tran CC, Han Y, Garcia-Perez M, Kaliaguine S. Synergistic effect of Mo–W carbides on selective hydrodeoxygenation of guaiacol to oxygen-free aromatic hydrocarbons. Catal Sci Technol 2019. [DOI: 10.1039/c8cy02184h] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mo–W carbide was synthesized via temperature-programmed reduction to generate a β-Mo2C phase with bulk morphology.
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Affiliation(s)
- Chi-Cong Tran
- Department of Chemical Engineering
- Laval University
- Quebec G1V 0A6
- Canada
| | - Yinglei Han
- Department of Biological System Engineering
- Washington State University
- Pullman
- USA
| | - Manuel Garcia-Perez
- Department of Biological System Engineering
- Washington State University
- Pullman
- USA
| | - Serge Kaliaguine
- Department of Chemical Engineering
- Laval University
- Quebec G1V 0A6
- Canada
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26
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27
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Promoting Effect of Boron on the Stability and Activity of Ni/Mo2C Catalyst for Hydrogenation of Alkali Lignin. Catal Letters 2018. [DOI: 10.1007/s10562-018-2395-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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28
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Kasiraju S, Grabow LC. Learning from the past: Are catalyst design principles transferrable between hydrodesulfurization and deoxygenation? AIChE J 2018. [DOI: 10.1002/aic.16151] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sashank Kasiraju
- Dept. of Chemical and Biomolecular EngineeringUniversity of HoustonHouston TX 77204
| | - Lars C. Grabow
- Dept. of Chemical and Biomolecular EngineeringUniversity of HoustonHouston TX 77204
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29
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Zacharopoulou V, Vasiliadou ES, Lemonidou AA. Exploring the Reaction Pathways of Bioglycerol Hydrodeoxygenation to Propene over Molybdena-Based Catalysts. CHEMSUSCHEM 2018; 11:264-275. [PMID: 28960919 DOI: 10.1002/cssc.201701605] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 09/28/2017] [Indexed: 06/07/2023]
Abstract
The one-step reaction of glycerol with hydrogen to form propene selectively is a particularly challenging catalytic pathway that has not yet been explored thoroughly. Molybdena-based catalysts are active and selective to C-O bond scission; propene is the only product in the gas phase under the standard reaction conditions, and further hydrogenation to propane is impeded. Within this context, this work focuses on the exploration of the reaction pathways and the investigation of various parameters that affect the catalytic performance, such as the role of hydrogen on the product distribution and the effect of the catalyst pretreatment step. Under a hydrogen atmosphere, propene is produced primarily via 2-propenol, whereas under an inert atmosphere propanal and glycerol dissociation products are formed mainly. The reaction most likely proceeds through a reverse Mars-van Krevelen mechanism as partially reduced Mo species drive the reaction to the formation of the desired product.
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Affiliation(s)
- Vasiliki Zacharopoulou
- Department of Chemical Engineering, Aristotle University of Thessaloniki, University campus, Thessaloniki, 54124, Greece
| | - Efterpi S Vasiliadou
- Department of Chemical Engineering, Aristotle University of Thessaloniki, University campus, Thessaloniki, 54124, Greece
- Present address: Catalysis Center for Energy Innovation, Interdisciplinary Science and Engineering Laboratory, University of Delaware, 221 Academy Street, Newark, DE, 19716, USA
| | - Angeliki A Lemonidou
- Department of Chemical Engineering, Aristotle University of Thessaloniki, University campus, Thessaloniki, 54124, Greece
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30
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Sullivan MM, Bhan A. Effects of oxygen coverage on rates and selectivity of propane-CO2 reactions on molybdenum carbide. J Catal 2018. [DOI: 10.1016/j.jcat.2017.11.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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Xiao X, Bergstrom H, Saenger R, Johnson B, Sun R, Peterson A. The role of oxygen vacancies in biomass deoxygenation by reducible zinc/zinc oxide catalysts. Catal Sci Technol 2018. [DOI: 10.1039/c7cy02535a] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective removal of oxygen is the key challenge in the upgrading of biomass-derived molecules, and reducible metal oxides have shown the ability to catalytically remove oxygen even at low exogenous H2 pressures.
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Affiliation(s)
- Xiao Xiao
- School of Engineering Brown University
- Providence
- USA
- Beijing Key Laboratory of Lignocellulosic Chemistry
- Beijing Forestry University
| | | | - Ryan Saenger
- School of Engineering Brown University
- Providence
- USA
| | | | - Runcang Sun
- Beijing Key Laboratory of Lignocellulosic Chemistry
- Beijing Forestry University
- Beijing
- China
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32
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Kumar A, Phadke S, Bhan A. Acetic acid hydrodeoxygenation on molybdenum carbide catalysts. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00358k] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Kinetics and site requirements of acetic acid hydrodeoxygenation on molybdenum carbide – a stable and selective catalyst under atmospheric hydrogen pressure.
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Affiliation(s)
- Anurag Kumar
- Department of Chemical Engineering and Materials Science
- University of Minnesota-Twin Cities
- Minneapolis
- USA
| | - Sohan Phadke
- Department of Chemical Engineering and Materials Science
- University of Minnesota-Twin Cities
- Minneapolis
- USA
| | - Aditya Bhan
- Department of Chemical Engineering and Materials Science
- University of Minnesota-Twin Cities
- Minneapolis
- USA
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33
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Effects of phosphorus on C C, C O, and C H bond rupture during acetic acid decomposition over Ru(0001) and Px-Ru(0001). J Catal 2017. [DOI: 10.1016/j.jcat.2017.07.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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34
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35
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Chen CJ, Bhan A. Mo2C Modification by CO2, H2O, and O2: Effects of Oxygen Content and Oxygen Source on Rates and Selectivity of m-Cresol Hydrodeoxygenation. ACS Catal 2017. [DOI: 10.1021/acscatal.6b02762] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cha-Jung Chen
- Department of Chemical Engineering
and Materials Science, University of Minnesota−Twin Cities, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
| | - Aditya Bhan
- Department of Chemical Engineering
and Materials Science, University of Minnesota−Twin Cities, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
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36
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Griffin MB, Baddour FG, Habas SE, Nash CP, Ruddy DA, Schaidle JA. An investigation into support cooperativity for the deoxygenation of guaiacol over nanoparticle Ni and Rh2P. Catal Sci Technol 2017. [DOI: 10.1039/c7cy00261k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
For guaiacol deoxygenation under catalytic fast pyrolysis conditions, support acidity increases catalytic activity while support reducibility enhances selectivity to deoxygenated products.
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Affiliation(s)
| | | | - Susan E. Habas
- National Bioenergy Center
- National Renewable Energy Laboratory
- Golden
- USA
| | - Connor P. Nash
- National Bioenergy Center
- National Renewable Energy Laboratory
- Golden
- USA
| | - Daniel A. Ruddy
- National Bioenergy Center
- National Renewable Energy Laboratory
- Golden
- USA
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37
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38
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Baddour FG, Nash CP, Schaidle JA, Ruddy DA. Synthesis of α-MoC1−xNanoparticles with a Surface-Modified SBA-15 Hard Template: Determination of Structure-Function Relationships in Acetic Acid Deoxygenation. Angew Chem Int Ed Engl 2016; 55:9026-9. [PMID: 27271466 DOI: 10.1002/anie.201602878] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Frederick G. Baddour
- National Bioenergy Center; National Renewable Energy Laboratory; 15013 Denver West Parkway Golden CO 80401 USA
| | - Connor P. Nash
- National Bioenergy Center; National Renewable Energy Laboratory; 15013 Denver West Parkway Golden CO 80401 USA
| | - Joshua A. Schaidle
- National Bioenergy Center; National Renewable Energy Laboratory; 15013 Denver West Parkway Golden CO 80401 USA
| | - Daniel A. Ruddy
- National Bioenergy Center; National Renewable Energy Laboratory; 15013 Denver West Parkway Golden CO 80401 USA
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39
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Synthesis of α-MoC1−xNanoparticles with a Surface-Modified SBA-15 Hard Template: Determination of Structure-Function Relationships in Acetic Acid Deoxygenation. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602878] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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40
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Pruski M, Sadow AD, Slowing II, Marshall CL, Stair P, Rodriguez J, Harris A, Somorjai GA, Biener J, Matranga C, Wang C, Schaidle JA, Beckham GT, Ruddy DA, Deutsch T, Alia SM, Narula C, Overbury S, Toops T, Bullock RM, Peden CHF, Wang Y, Allendorf MD, Nørskov J, Bligaard T. Virtual Special Issue on Catalysis at the U.S. Department of Energy’s National Laboratories. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Yong Wang
- Pacific Northwest National Laboratory
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41
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Shi Y, Yang Y, Li YW, Jiao H. Theoretical study about Mo2C(101)-catalyzed hydrodeoxygenation of butyric acid to butane for biomass conversion. Catal Sci Technol 2016. [DOI: 10.1039/c5cy02008e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To explore the conversion mechanism of fatty acids to long-chain alkanes using molybdenum carbide catalysts, the full potential energy surface of the hydrogenation of butyric acid to butane on the H-pre-covered hexagonal Mo2C(101) surface has been systematically computed.
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Affiliation(s)
- Yun Shi
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
- National Energy Center for Coal to Liquids
| | - Yong Yang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
- National Energy Center for Coal to Liquids
| | - Yong-Wang Li
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
- National Energy Center for Coal to Liquids
| | - Haijun Jiao
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
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