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Yu X, Cheng Y, Li Y, Polo-Garzon F, Liu J, Mamontov E, Li M, Lennon D, Parker SF, Ramirez-Cuesta AJ, Wu Z. Neutron Scattering Studies of Heterogeneous Catalysis. Chem Rev 2023. [PMID: 37315192 DOI: 10.1021/acs.chemrev.3c00101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Understanding the structural dynamics/evolution of catalysts and the related surface chemistry is essential for establishing structure-catalysis relationships, where spectroscopic and scattering tools play a crucial role. Among many such tools, neutron scattering, though less-known, has a unique power for investigating catalytic phenomena. Since neutrons interact with the nuclei of matter, the neutron-nucleon interaction provides unique information on light elements (mainly hydrogen), neighboring elements, and isotopes, which are complementary to X-ray and photon-based techniques. Neutron vibrational spectroscopy has been the most utilized neutron scattering approach for heterogeneous catalysis research by providing chemical information on surface/bulk species (mostly H-containing) and reaction chemistry. Neutron diffraction and quasielastic neutron scattering can also supply important information on catalyst structures and dynamics of surface species. Other neutron approaches, such as small angle neutron scattering and neutron imaging, have been much less used but still give distinctive catalytic information. This review provides a comprehensive overview of recent advances in neutron scattering investigations of heterogeneous catalysis, focusing on surface adsorbates, reaction mechanisms, and catalyst structural changes revealed by neutron spectroscopy, diffraction, quasielastic neutron scattering, and other neutron techniques. Perspectives are also provided on the challenges and future opportunities in neutron scattering studies of heterogeneous catalysis.
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Affiliation(s)
- Xinbin Yu
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37381, United States
| | - Yongqiang Cheng
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Yuanyuan Li
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37381, United States
| | - Felipe Polo-Garzon
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37381, United States
| | - Jue Liu
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Eugene Mamontov
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Meijun Li
- Manufacturing Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - David Lennon
- School of Chemistry, Joseph Black Building, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Stewart F Parker
- ISIS Pulsed Neutron and Muon Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, United Kingdom
| | - Anibal J Ramirez-Cuesta
- Neutron Technologies Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Zili Wu
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37381, United States
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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2
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Wang Y, Li L, Cui C, Da. Costa P, Hu C. The effect of adsorbed oxygen species on carbon-resistance of Ni-Zr catalyst modified by Al and Mn for dry reforming of methane. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.03.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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3
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Trifunctional strategy for the design and synthesis of a Ni-CeO2@SiO2 catalyst with remarkable low-temperature sintering and coking resistance for methane dry reforming. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(21)63789-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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4
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Wang Y, Wang Y, Li L, Cui C, Liu X, Da. Costa P, Hu C. Syngas Production via CO 2 Reforming of Methane over Aluminum-Promoted NiO-10Al 2O 3-ZrO 2 Catalyst. ACS OMEGA 2021; 6:22383-22394. [PMID: 34497927 PMCID: PMC8412958 DOI: 10.1021/acsomega.1c03174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 08/09/2021] [Indexed: 06/13/2023]
Abstract
CO2 reforming of methane was studied at medium temperature (700 °C) using a GSHV of 48,000 h-1 over nickel catalysts supported on ZrO2 promoted by alumina. The catalysts were prepared by a one-step synthesis method and characterized by BET, H2-TPR, XRD, XPS, TEM, Raman spectroscopy, and TGA. The NiO-10Al2O3-ZrO2 catalyst exhibited higher catalytic performance in comparison with the NiO-ZrO2 catalyst. The enhancement of catalytic activity in dry reforming could be associated with the alterations in surface properties due to Al promotion. First, the Al promoter could modify the structure of ZrO2, leading to an increase of its pore volume and pore diameter. Second, the NiO-10Al2O3-ZrO2 catalyst exhibited high resistance to sintering. Third, the NiO-10Al2O3-ZrO2 catalyst showed high suppression to the loss of nickel during a long-term catalytic test. Finally, the addition of Al could inhibit the reduction of ZrO2 during the reduction and reaction, endowing further the stability.
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Affiliation(s)
- Ye Wang
- College
of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- Sorbonne
Université, Institut Jean Le Rond d’Alembert,
CNRS, 2 Place de la Gare de Ceinture, Saint-Cyr-L’Ecole 78210, France
| | - Yannan Wang
- Key
Laboratory of Green Chemistry and Technology, Ministry of Education,
College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Li Li
- Key
Laboratory of Green Chemistry and Technology, Ministry of Education,
College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Chaojun Cui
- College
of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Xudong Liu
- Key
Laboratory of Green Chemistry and Technology, Ministry of Education,
College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Patrick Da. Costa
- Sorbonne
Université, Institut Jean Le Rond d’Alembert,
CNRS, 2 Place de la Gare de Ceinture, Saint-Cyr-L’Ecole 78210, France
| | - Changwei Hu
- College
of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- Key
Laboratory of Green Chemistry and Technology, Ministry of Education,
College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
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5
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Lin L, Mei Q, Han X, Parker SF, Yang S. Investigations of Hydrocarbon Species on Solid Catalysts by Inelastic Neutron Scattering. Top Catal 2020. [DOI: 10.1007/s11244-020-01389-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractThe status of surface species on solid catalysts during heterogeneous catalysis is often mysterious. Investigations of these surface species are crucial to deconvolute the reaction network and design more efficient catalysts. Vibrational spectroscopy is a powerful technique to study the interactions between surface species and the catalysts and infrared (IR) and Raman spectroscopies have been widely applied to study reaction mechanisms in heterogeneous catalysis. However, IR/Raman spectra are difficult to model computationally and important vibrational modes may be IR-, Raman- (or both) inactive due to restrictions by optical selection rules. Inelastic neutron scattering (INS) is another form of vibrational spectroscopy and relies on the scattering of neutrons by the atomic nucleus. A consequence of this is that INS is not subject to any optical selection rules and all vibrations are measurable in principle. INS spectroscopy has been used to investigate surface species on catalysts in a wide range of heterogeneous catalytic reactions. In this mini-review, we focus on applications of INS in two important fields: petrochemical reactions and C1 chemistry. We introduce the basic principles of the INS technique, followed by a discussion of its application in investigating two key catalytic systems: (i) the behaviour of hydrocarbons on metal-oxide and zeolite catalysts and (ii) the formation of hydrocarbonaceous species on methane reforming and Fischer–Tropsch catalysts. The power of INS in studying these important catalytic systems is demonstrated.
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6
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MacIntosh KL, Beaumont SK. Nickel-Catalysed Vapour-Phase Hydrogenation of Furfural, Insights into Reactivity and Deactivation. Top Catal 2020. [DOI: 10.1007/s11244-020-01341-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractFurfural is a key bioderived platform molecule, and its hydrogenation affords access to a number of important chemical intermediates that can act as “drop-in” replacements to those derived from crude oil or novel alternatives with desirable properties. Here, the vapour phase hydrogenation of furfural to furfuryl alcohol at 180 °C over standard impregnated nickel catalysts is reported and contrasted with the same reaction over copper chromite. Whilst the selectivity to furfuryl alcohol of the unmodified nickel catalysts is much lower than for copper chromite as expected, the activity of the nickel catalysts in the vapour phase is significantly higher, and the deactivation profile remarkably similar. In the case of the supported nickel catalysts, possible contribution to the deactivation by acidic sites on the catalyst support is discounted based on the similarity of deactivation kinetics on Ni/SiO2 with those seen for less acidic Ni/TiO2 and Ni/CeO2. Powder X-ray diffraction is used to exclude sintering as a primary deactivation pathway. Significant coking of the catalyst (~ 30 wt% over 16 h) is observed using temperature programmed oxidation. This, in combination with the solvent extraction analysis and infrared spectroscopy of the coked catalysts points to deactivation by polymeric condensation products of (reactant or) products and hydrocarbon like coke. These findings pave the way for targeted modification of nickel catalysts to use for this important biofeedstock-to-chemicals transformation.
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7
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Han B, Zhao L, Wang F, Xu L, Yu H, Cui Y, Zhang J, Shi W. Effect of Calcination Temperature on the Performance of the Ni@SiO2 Catalyst in Methane Dry Reforming. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01213] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bolin Han
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Long Zhao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Fagen Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
- Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Leilei Xu
- School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Hao Yu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Yi Cui
- Vacuum Interconnected Nanotech Workstation, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Jianming Zhang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Weidong Shi
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
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8
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Polo-Garzon F, Luo S, Cheng Y, Page KL, Ramirez-Cuesta AJ, Britt PF, Wu Z. Neutron Scattering Investigations of Hydride Species in Heterogeneous Catalysis. CHEMSUSCHEM 2019; 12:93-103. [PMID: 30395417 DOI: 10.1002/cssc.201801890] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 11/02/2018] [Indexed: 06/08/2023]
Abstract
In heterogeneous catalysis, hydrides on the surface or in the bulk play a critical role as either active components or reaction intermediates in many hydrogen-involving reactions, but characterization of the nature and structure of these hydride species remains challenging. Neutron scattering, which is extremely sensitive to light elements, such as hydrogen, has shown great potential in meeting this challenge. In this Minireview, recent advances in neutron studies of hydride species, mainly over the two most typical classes of catalysts-metals and oxides-are surveyed. Findings on catalysts outside these categories are raised if they are considered to be relevant for contextualization in the present Minireview. The adsorption, dissociation, spillover, and reactivity of hydrogen, especially hydride species over supported metal and oxide catalysts, have been successfully investigated, mostly by means of neutron vibrational spectroscopy. Insights from these neutron studies, which are otherwise not possible with other techniques, shed light on the interaction mechanism of hydrogen with solid surfaces and reaction mechanisms in which hydrogen is involved. Future research challenges on neutron scattering studies of hydrides, as well as catalysis in general, are also highlighted, and more operando-type neutron studies need be conducted to advance the field.
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Affiliation(s)
- Felipe Polo-Garzon
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Si Luo
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Yongqiang Cheng
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Katharine L Page
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | | | - Phillip F Britt
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Zili Wu
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
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9
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Warringham R, Davidson AL, Webb PB, Tooze RP, Ewings RA, Parker SF, Lennon D. Examining the temporal behavior of the hydrocarbonaceous overlayer on an iron based Fischer–Tropsch catalyst. RSC Adv 2019; 9:2608-2617. [PMID: 35520506 PMCID: PMC9059844 DOI: 10.1039/c8ra09731c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 12/21/2018] [Indexed: 12/03/2022] Open
Abstract
In order to examine fundamental processes connected with the use of an unpromoted iron based Fischer–Tropsch synthesis (FTS) catalyst, model studies examining the temporal formation of hydrocarbonaceous species that form over the catalyst are undertaken using a combination of temperature-programmed oxidation, powder X-ray diffraction, Raman scattering, transmission electron microscopy and inelastic neutron scattering (INS). Catalyst samples were exposed to ambient pressure CO hydrogenation at 623 K for defined periods of time-on-stream (3, 6, 12 and 24 h) prior to analysis. INS reveals a progressive retention of hydrogenous species that is associated with the evolution of a hydrocarbonaceous overlayer, as evidenced by the presence of sp2 and sp3 hybridized C–H vibrational modes. Correlations between the formation of aliphatic and olefinic/aromatic moieties with post-reaction characterization leads to the proposal of a number of chemical transformations that, collectively, define the conditioning phase of the catalyst under the specified set of reaction conditions. A comparison between the inelastic neutron scattering spectra of the 24 h sample with that of an iron catalyst extracted from a commercial grade Fischer–Tropsch reactor validates the relevance of the experimental approach adopted. Inelastic neutron scattering is used to examine an un-promoted iron based Fischer–Tropsch synthesis catalyst exposed to ambient pressure CO hydrogenation at 623 K for defined periods of time-on-stream (3, 6, 12 and 24 h).![]()
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Affiliation(s)
- Robbie Warringham
- School of Chemistry
- Joseph Black Building
- University of Glasgow
- Glasgow
- UK
| | | | - Paul B. Webb
- School of Chemistry
- University of St Andrews
- St Andrews
- UK
| | | | | | | | - David Lennon
- School of Chemistry
- Joseph Black Building
- University of Glasgow
- Glasgow
- UK
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10
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Kim HJ, Yang EH, Noh YS, Hong GH, Park JI, Shin SA, Lee KY, Moon DJ. Studies on the steam CO2 reforming of methane over ordered mesoporous nickel–magnesium–alumina catalysts. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3156-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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11
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Preparation and application of nickel based carbon fibers for the steam reforming of methane. REACTION KINETICS MECHANISMS AND CATALYSIS 2017. [DOI: 10.1007/s11144-017-1137-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Zhao X, Cao Y, Li H, Zhang J, Shi L, Zhang D. Sc promoted and aerogel confined Ni catalysts for coking-resistant dry reforming of methane. RSC Adv 2017. [DOI: 10.1039/c6ra27266e] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Sc promoted and aerogel confined Ni catalysts were developed for coking-resistant dry reforming of methane.
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Affiliation(s)
- Xiaoyuan Zhao
- Research Center of Nano Science and Technology
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Yang Cao
- Research Center of Nano Science and Technology
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Hongrui Li
- Research Center of Nano Science and Technology
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Jianping Zhang
- Research Center of Nano Science and Technology
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Liyi Shi
- Research Center of Nano Science and Technology
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Dengsong Zhang
- Research Center of Nano Science and Technology
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
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13
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O'Malley AJ, Parker SF, Catlow CRA. Neutron spectroscopy as a tool in catalytic science. Chem Commun (Camb) 2017; 53:12164-12176. [DOI: 10.1039/c7cc05982e] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The unique power of neutron spectroscopy to probe molecular behaviour in catalytic systems is illustrated. Vibrational spectroscopy and quasielastic scattering techniques are introduced, along with their use in probing methanol-to-hydrocarbons and methane reforming catalysis, and also hydrocarbon behaviour in microporous catalysts.
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Affiliation(s)
- Alexander J. O'Malley
- Cardiff Catalysis Institute
- School of Chemistry
- Cardiff University
- UK
- The UK Catalysis Hub
| | - Stewart F. Parker
- The UK Catalysis Hub
- Research Complex at Harwell
- Rutherford Appleton Laboratory
- Oxfordshire
- UK
| | - C. Richard A. Catlow
- Cardiff Catalysis Institute
- School of Chemistry
- Cardiff University
- UK
- The UK Catalysis Hub
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14
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Zhao X, Lu M, Li H, Fang J, Shi L, Zhang D. In situ preparation of Ni nanoparticles in cerium-modified silica aerogels for coking- and sintering-resistant dry reforming of methane. NEW J CHEM 2017. [DOI: 10.1039/c7nj00115k] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ni nanoparticles in nanochannels of cerium-modified silica aerogels were in situ prepared for coking-resistant dry reforming of methane.
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Affiliation(s)
- Xiaoyuan Zhao
- Department of Chemistry
- Research Center of Nano Science and Technology
- Shanghai University
- Shanghai 200444
- China
| | - Meirong Lu
- Department of Chemistry
- Research Center of Nano Science and Technology
- Shanghai University
- Shanghai 200444
- China
| | - Hongrui Li
- Department of Chemistry
- Research Center of Nano Science and Technology
- Shanghai University
- Shanghai 200444
- China
| | - Jianhui Fang
- Department of Chemistry
- Research Center of Nano Science and Technology
- Shanghai University
- Shanghai 200444
- China
| | - Liyi Shi
- Department of Chemistry
- Research Center of Nano Science and Technology
- Shanghai University
- Shanghai 200444
- China
| | - Dengsong Zhang
- Department of Chemistry
- Research Center of Nano Science and Technology
- Shanghai University
- Shanghai 200444
- China
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15
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Application of Inelastic Neutron Scattering to the Methanol-to-Gasoline Reaction Over a ZSM-5 Catalyst. Catal Letters 2016; 146:1242-1248. [PMID: 32355437 PMCID: PMC7175671 DOI: 10.1007/s10562-016-1742-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 03/29/2016] [Indexed: 11/25/2022]
Abstract
Abstract Inelastic neutron scattering (INS) is used to investigate a ZSM-5 catalyst that has been exposed to methanol vapour at elevated temperature. In-line mass spectrometric analysis of the catalyst exit stream confirms methanol-to-gasoline chemistry, whilst ex situ INS measurements detect hydrocarbon species formed in/on the catalyst during methanol conversion. These preliminary studies demonstrate the capability of INS to complement infrared spectroscopic characterisation of the hydrocarbon pool present in/on ZSM-5 during the MTG reaction. Graphical Abstract ![]()
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Liao X, Gerdts R, Parker SF, Chi L, Zhao Y, Hill M, Guo J, Jones MO, Jiang Z. An in-depth understanding of the bimetallic effects and coked carbon species on an active bimetallic Ni(Co)/Al2O3dry reforming catalyst. Phys Chem Chem Phys 2016; 18:17311-9. [DOI: 10.1039/c6cp01089j] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Collett CH, McGregor J. Things go better with coke: the beneficial role of carbonaceous deposits in heterogeneous catalysis. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01236h] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbonaceous deposits on heterogeneous catalysts are traditionally associated with catalyst deactivation. However, they can play a beneficial role in many catalytic processes, e.g. dehydrogenation, hydrogenation, alkylation, isomerisation, Fischer–Tropsch, MTO etc. This review highlights the role and mechanism by which coke deposits can enhance catalytic performance.
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Affiliation(s)
- C. H. Collett
- Department of Chemical and Biological Engineering
- The University of Sheffield
- Sheffield S1 3JD
- UK
| | - J. McGregor
- Department of Chemical and Biological Engineering
- The University of Sheffield
- Sheffield S1 3JD
- UK
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Warringham R, McFarlane AR, MacLaren DA, Webb PB, Tooze RP, Taylor J, Ewings RA, Parker SF, Lennon D. The application of inelastic neutron scattering to explore the significance of a magnetic transition in an iron based Fischer-Tropsch catalyst that is active for the hydrogenation of CO. J Chem Phys 2015; 143:174703. [DOI: 10.1063/1.4935054] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Robbie Warringham
- School of Chemistry, University of Glasgow, Joseph Black Building, Glasgow, Scotland G12 8QQ, United Kingdom
| | - Andrew R. McFarlane
- School of Chemistry, University of Glasgow, Joseph Black Building, Glasgow, Scotland G12 8QQ, United Kingdom
| | - Donald A. MacLaren
- School of Physics and Astronomy, University of Glasgow, The Kelvin Building, Glasgow, Scotland G12 8QQ, United Kingdom
| | - Paul B. Webb
- Sasol Technology UK Ltd., Purdie Building, North Haugh, St Andrews, Fife KY16 9ST, United Kingdom
| | - Robert P. Tooze
- Sasol Technology UK Ltd., Purdie Building, North Haugh, St Andrews, Fife KY16 9ST, United Kingdom
| | - Jon Taylor
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, United Kingdom
| | - Russell A. Ewings
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, United Kingdom
| | - Stewart F. Parker
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, United Kingdom
| | - David Lennon
- School of Chemistry, University of Glasgow, Joseph Black Building, Glasgow, Scotland G12 8QQ, United Kingdom
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