1
|
CeO2 modified Ru/γ-Al2O3 catalyst for ammonia decomposition reaction. J RARE EARTH 2023. [DOI: 10.1016/j.jre.2023.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
2
|
Kim D, Dimitrakopoulos G, Yildiz B. Controlling the Size of Au Nanoparticles on Reducible Oxides with the Electrochemical Potential. J Am Chem Soc 2022; 144:21926-21938. [PMID: 36441525 DOI: 10.1021/jacs.2c08422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Controlling the size of Au nanoparticles (NPs) and their interaction with the oxide support is important for their catalytic performance in chemical reactions, such as CO oxidation and water-gas shift. It is known that the oxygen vacancies at the surface of support oxides form strong chemical bonding with the Au NPs and inhibit their coarsening and deactivation. The resulting Au/oxygen vacancy interface also acts as an active site for oxidation reactions. Hence, small Au NPs are needed to increase the density of the Au/oxide interface. A dynamic way to control the size of the Au NPs on an oxide support is desirable but has been missing in the field. Here, we demonstrate an electrochemical method to control the size of the Au NPs by controlling the surface oxygen vacancy concentration of the support oxide. Oxides with different reducibilities, La0.8Ca0.2MnO3±δ and Pr0.1Ce0.9O2-δ, are used as model support oxides. By applying the electrochemical potential, we achieve a wide range of effective oxygen pressures, pO2 (10-37-1014 atm), in the support oxides. Applying the cathodic potential creates a high concentration of oxygen vacancies and forms finely distributed Au NPs with sizes of 7-13 nm at 700-770 °C in 10 min, while the anodic potential oxidizes the surface and increases the size of the Au NPs. The onset cathodic potential required to create small Au NPs depends strongly on the reducibility of the support oxide. The Au NPs did not undergo sintering even at 700-770 °C under the cathodic potential and also were stable in catalytically relevant conditions without potential.
Collapse
Affiliation(s)
- Dongha Kim
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Georgios Dimitrakopoulos
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Bilge Yildiz
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States.,Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
3
|
High-Temperature Abatement of N2O over FeOx/CeO2-Al2O3 Catalysts: The Effects of Oxygen Mobility. Catalysts 2022. [DOI: 10.3390/catal12090938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
CeO2-Al2O3 oxides prepared by co-precipitation (Ce+Al) or CeOx precipitation onto Al2O3 (Ce/Al) to obtain dispersed CeO2 and samples with further supported FeOx (2.5–9.9 weight% in terms of Fe) were characterized by XRD, XPS, DDPA and Raman. Fe/Ce/Al samples with lower surface concentrations of Fe3+ were substantially more active in N2O decomposition at 700–900 0C. It was related to higher oxygen mobility, as estimated from 16O/18O exchange experiments and provided by preferential exposing of (Fe-)Ce oxides. Stabilization of some Ce as isolated Ce3+ in Fe-Ce-Al mixed oxides dominating in the bulk and surface layers of Fe/(Ce + Al) samples retards the steps responsible for fast additional oxygen transfer to the sites of O2 desorption.
Collapse
|
4
|
Cao X, Han YF, Peng C, Zhu M. A Review on the Water‐Gas Shift Reaction over Nickel‐Based Catalysts. ChemCatChem 2022. [DOI: 10.1002/cctc.202200190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xinyu Cao
- East China University of Science and Technology School of Chemical Engineering CHINA
| | - Yi-Fan Han
- East China University of Science and Technology School of Chemical Engineering CHINA
| | - Chong Peng
- Sinopec: China Petrochemical Corporation School of Chemical Engineering CHINA
| | - Minghui Zhu
- East China University of Science and Technology Department of Chemical Engineering 130 Meilong Road 200237 Shanghai CHINA
| |
Collapse
|
5
|
Partial Oxidation of Methanol (POM) over Transition Metal-Promoted Nanostructured Gold Catalysts Supported on CeO2–ZrO2. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2021. [DOI: 10.1007/s13369-020-05137-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
6
|
|
7
|
Nair AS, Ahuja R, Pathak B. Unraveling the single-atom electrocatalytic activity of transition metal-doped phosphorene. NANOSCALE ADVANCES 2020; 2:2410-2421. [PMID: 36133380 PMCID: PMC9418523 DOI: 10.1039/d0na00209g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 04/21/2020] [Indexed: 05/28/2023]
Abstract
The development of single-atom catalysts (SACs) for chemical reactions of vital importance in the renewable energy sector has emerged as an urgent priority. In this perspective, transition metal-based SACs with monolayer phosphorous (phosphorene) as the supporting material are scrutinized for their electrocatalytic activity towards the oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER) from first-principle calculations. The detailed screening study has confirmed a breaking of the scaling relationship between the ORR/OER intermediates, resulting in various activity trends across the transition metal series. Groups 9 and 10 transition metal-based SACs are identified as potential catalyst candidates with the platinum single atom offering bifunctional activity for OER and HER with diminished overpotentials. Ambient condition stability analysis of SACs confirmed a different extent of interaction towards oxygen and water compared to pristine phosphorene, suggesting room for improving the stability of phosphorene via chemical functionalization.
Collapse
Affiliation(s)
- Akhil S Nair
- Discipline of Chemistry, Indian Institute of Technology Indore M. P. India
| | - Rajeev Ahuja
- Condensed Matter Theory Group, Department of Physics and Astronomy, Uppsala University Box 516 SS-75120 Uppsala Sweden
- Applied Materials Theory Group, Department of Materials and Engineering, Royal Institute of Technology, (KTH) S-10044 Stockholm Sweden
| | - Biswarup Pathak
- Discipline of Chemistry, Indian Institute of Technology Indore M. P. India
| |
Collapse
|
8
|
Price CAH, Pastor-Pérez L, Ivanova S, Reina TR, Liu J. The Success Story of Gold-Based Catalysts for Gas- and Liquid-Phase Reactions: A Brief Perspective and Beyond. Front Chem 2019; 7:691. [PMID: 31709225 PMCID: PMC6822280 DOI: 10.3389/fchem.2019.00691] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 10/07/2019] [Indexed: 01/08/2023] Open
Abstract
Gold has long held the fascination of mankind. For millennia it has found use in art, cosmetic metallurgy and architecture; this element is seen as the ultimate statement of prosperity and beauty. This myriad of uses is made possible by the characteristic inertness of bulk gold; allowing it to appear long lasting and above the tarnishing experienced by other metals, in part providing its status as the most noble metal.
Collapse
Affiliation(s)
- Cameron A H Price
- Department of Chemical and Process Engineering Department, University of Surrey, Guildford, United Kingdom.,State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Laura Pastor-Pérez
- Department of Chemical and Process Engineering Department, University of Surrey, Guildford, United Kingdom.,State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Svetlana Ivanova
- Departamento de Química Inorgánica, Universidad de Sevilla, Instituto de Ciencias de Materiales de Sevilla Centro Mixto (US-CSIC), Seville, Spain
| | - Tomas R Reina
- Department of Chemical and Process Engineering Department, University of Surrey, Guildford, United Kingdom
| | - Jian Liu
- Department of Chemical and Process Engineering Department, University of Surrey, Guildford, United Kingdom.,State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| |
Collapse
|
9
|
Tabakova T. Recent Advances in Design of Gold-Based Catalysts for H 2 Clean-Up Reactions. Front Chem 2019; 7:517. [PMID: 31448254 PMCID: PMC6692441 DOI: 10.3389/fchem.2019.00517] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 07/05/2019] [Indexed: 11/13/2022] Open
Abstract
Over the past three decades, supported gold nanoparticles have demonstrated outstanding properties and continue to attract the interest of the scientific community. Several books and comprehensive reviews as well as numerous papers cover a variety of fundamental and applied aspects specific to gold-based catalyst synthesis, characterization by different techniques, relationship among catalyst support features, electronic and structural properties of gold particles, and catalytic activity, reaction mechanism, and theoretical modeling. Among the Au-catalyzed reactions targeting environmental protection and sustainable energy applications, particular attention is paid to pure hydrogen production. The increasing demands for high-purity hydrogen for fuel cell systems caused a renewed interest in the water-gas shift reaction. This well-known industrial process provides an attractive way for hydrogen generation and additional increase of its concentration in the gas mixtures obtained by processes utilizing coal, petroleum, or biomass resources. An effective step for further elimination of CO traces from the reformate stream after water-gas shift unit is the preferential CO oxidation. Developing highly active, stable, and selective catalysts for these two reactions is of primary importance for efficient upgrading of hydrogen purity in fuel cell applications. This review aims to extend the existing knowledge and understanding of the properties of gold-based catalysts for H2 clean-up reactions. In particular, new approaches and strategies for design of high-performing and cost-effective formulations are addressed. Emphasis is placed on efforts to explore appropriate and economically viable supports with complex composition prepared by various synthesis procedures. Relevance of ceria application as a support for new-generation WGS catalysts is pointed out. The role of the nature of support in catalyst behavior and specifically the existence of an active gold-support interface is highlighted. Long-term stability and tolerance toward start-up/shutdown cycling are discussed. Very recent advances in catalyst design are described focusing on structured catalysts and microchannel reactors. The latest mechanistic aspects of the water-gas shift reaction and preferential CO oxidation over gold-based catalysts from density functional theory calculations are noted because of their essential role in discovering novel highly efficient catalysts.
Collapse
Affiliation(s)
- Tatyana Tabakova
- Institute of Catalysis, Bulgarian Academy of Sciences, Sofia, Bulgaria
| |
Collapse
|
10
|
Megías-Sayago C, Lolli A, Ivanova S, Albonetti S, Cavani F, Odriozola J. Au/Al2O3 – Efficient catalyst for 5-hydroxymethylfurfural oxidation to 2,5-furandicarboxylic acid. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.04.024] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
11
|
Li P, Chen X, Li Y, Schwank JW. A review on oxygen storage capacity of CeO2-based materials: Influence factors, measurement techniques, and applications in reactions related to catalytic automotive emissions control. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.05.059] [Citation(s) in RCA: 138] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
12
|
Structure-activity relationship in water-gas shift reaction over gold catalysts supported on Y-doped ceria. J RARE EARTH 2019. [DOI: 10.1016/j.jre.2018.07.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
13
|
Ren GQ, Pei GX, Zhang JC, Li WZ. Activity promotion of anti-sintering Au MgGa2O4 using ceria in the water gas shift reaction and catalytic combustion reactions. CHINESE JOURNAL OF CATALYSIS 2019. [DOI: 10.1016/s1872-2067(19)63295-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
14
|
Characterization of Highly Dispersed Rod- and Particle-Shaped CuFe19Ox Catalysts and Their Shape Effects on WGS. Catalysts 2018. [DOI: 10.3390/catal8120635] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Highly dispersed CuFe19Ox catalysts with different shapes were prepared and further characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), H2 temperature-programmed reduction (H2-TPR), and in-situ XRD. XRD and TEM results showed that the synthesized CuFe19Ox nanoparticles consisted of CuO and Fe2O3, while CuFe19Ox nanorods consisted of CuFe2O4 and Fe2O3. The reduction properties of CuFe19Ox samples were finely studied by H2-TPR, and the phase composition was identified by in-situ XPS, HR-TEM, and surface TPR (s-TPR). In-situ X-ray photoelectroscopy (XPS) indicated that the metallic Cu and Fe3O4 were the main species after reduction. Moreover, s-TPR studies showed that the reduction performance of copper was significantly affected by the shapes of the Fe3O4 supports. Low-temperature water gas shift (LT-WGS) was chosen to characterize the Cu species on the surface. It was found that reduced CuFe19Ox nanorods had no activity. On the contrary, reduced CuFe19Ox particles showed higher initial WGS activity, where the active Cu0 should originate from the reduction of Cu2O at lower temperatures, as confirmed by the s-TPR profiles.
Collapse
|
15
|
Abstract
The low-temperature water–gas shift reaction (LTS: CO + H2O ⇌ CO2 + H2) is a key step in the purification of H2 reformate streams that feed H2 fuel cells. Supported gold catalysts were originally identified as being active for this reaction twenty years ago, and since then, considerable advances have been made in the synthesis and characterisation of these catalysts. In this review, we identify and evaluate the progress towards solving the most important challenge in this research area: the development of robust, highly active catalysts that do not deactivate on-stream under realistic reaction conditions.
Collapse
|
16
|
Abdel-Mageed AM, Kučerová G, Bansmann J, Behm RJ. Active Au Species During the Low-Temperature Water Gas Shift Reaction on Au/CeO2: A Time-Resolved Operando XAS and DRIFTS Study. ACS Catal 2017. [DOI: 10.1021/acscatal.7b01563] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ali M. Abdel-Mageed
- Institute of Surface Chemistry
and Catalysis, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
| | - Gabriela Kučerová
- Institute of Surface Chemistry
and Catalysis, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
| | - Joachim Bansmann
- Institute of Surface Chemistry
and Catalysis, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
| | - R. Jürgen Behm
- Institute of Surface Chemistry
and Catalysis, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
| |
Collapse
|
17
|
Poggio-Fraccari E, Giunta P, Baronetti G, Mariño F. Cu and/or Ni catalysts over CePr oxide for the water gas shift reaction: an experimental study, kinetic fitting and reactor simulation. REACTION KINETICS MECHANISMS AND CATALYSIS 2017. [DOI: 10.1007/s11144-017-1166-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
18
|
Rodriguez JA, Grinter DC, Liu Z, Palomino RM, Senanayake SD. Ceria-based model catalysts: fundamental studies on the importance of the metal–ceria interface in CO oxidation, the water–gas shift, CO2 hydrogenation, and methane and alcohol reforming. Chem Soc Rev 2017; 46:1824-1841. [DOI: 10.1039/c6cs00863a] [Citation(s) in RCA: 242] [Impact Index Per Article: 34.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Model metal/ceria and ceria/metal catalysts have shown to be excellent systems for studying fundamental phenomena linked to the operation of technical catalysts.
Collapse
Affiliation(s)
- José A. Rodriguez
- Chemistry Department
- Brookhaven National Laboratory
- NY 11973
- USA
- Department of Chemistry
| | | | - Zongyuan Liu
- Department of Chemistry
- State University of New York (SUNY)
- NY 11749
- USA
| | | | | |
Collapse
|
19
|
Laguna O, Centeno M, Boutonnet M, Odriozola J. Au-supported on Fe-doped ceria solids prepared in water-in-oil microemulsions: Catalysts for CO oxidation. Catal Today 2016. [DOI: 10.1016/j.cattod.2016.05.059] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
20
|
Boldrin P, Ruiz-Trejo E, Mermelstein J, Bermúdez Menéndez JM, Ramı Rez Reina T, Brandon NP. Strategies for Carbon and Sulfur Tolerant Solid Oxide Fuel Cell Materials, Incorporating Lessons from Heterogeneous Catalysis. Chem Rev 2016; 116:13633-13684. [PMID: 27933769 DOI: 10.1021/acs.chemrev.6b00284] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Solid oxide fuel cells (SOFCs) are a rapidly emerging energy technology for a low carbon world, providing high efficiency, potential to use carbonaceous fuels, and compatibility with carbon capture and storage. However, current state-of-the-art materials have low tolerance to sulfur, a common contaminant of many fuels, and are vulnerable to deactivation due to carbon deposition when using carbon-containing compounds. In this review, we first study the theoretical basis behind carbon and sulfur poisoning, before examining the strategies toward carbon and sulfur tolerance used so far in the SOFC literature. We then study the more extensive relevant heterogeneous catalysis literature for strategies and materials which could be incorporated into carbon and sulfur tolerant fuel cells.
Collapse
Affiliation(s)
- Paul Boldrin
- Department of Earth Science and Engineering, Imperial College London , London SW7 2AZ, United Kingdom
| | - Enrique Ruiz-Trejo
- Department of Earth Science and Engineering, Imperial College London , London SW7 2AZ, United Kingdom
| | - Joshua Mermelstein
- The Boeing Company , 5301 Bolsa Ave., Huntington Beach, CA 92647, United States
| | | | - Tomás Ramı Rez Reina
- Department of Chemical and Process Engineering, University of Surrey , Guildford GU2 7XH, United Kingdom
| | - Nigel P Brandon
- Department of Earth Science and Engineering, Imperial College London , London SW7 2AZ, United Kingdom
| |
Collapse
|
21
|
|