1
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Zhao B, Zhang X, Mao J, Wang Y, Zhang G, Zhang ZC, Guo X. Crystal-Plane-Dependent Guaiacol Hydrodeoxygenation Performance of Au on Anatase TiO2. Catalysts 2023. [DOI: 10.3390/catal13040699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023] Open
Abstract
TiO2-supported catalysts have been widely used for a range of both liquid-phase and gas-phase hydrogenation reactions. However, little is known about the effect of their different crystalline surfaces on their activity during the hydrodeoxygenation process. In this work, Au supported on anatase TiO2, mainly exposing 101 or 001 facets, was investigated for the hydrodeoxygenation (HDO) of guaiacol. At 300 °C, the strong interaction between the Au and TiO2-101 surface resulted in the facile reduction of the TiO2-101 surface with concomitant formation of oxygen vacancies, as shown by the H2-TPR and H2-TPD profiles. Meanwhile, the formation of Auδ−, as determined by CO-DRIFT spectra and in situ XPS, was found to promote the demethylation of guaiacol producing methane. However, this strong interaction was absent on the Au/TiO2-001 catalyst since TiO2-001 was relatively difficult to be reduced compared with TiO2-101. The Au on TiO2-001 just served as the active site for the dissociation of hydrogen without the formation of Auδ−. The hydrogen atoms spilled over to the surface of TiO2-001 to form a small amount of oxygen vacancies, which resulted in lower activity than that over Au/TiO2-101. The catalytic activity of the Au/TiO2 catalyst for hydrodeoxygenation will be controlled by tuning the crystal plane of the TiO2 support.
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Affiliation(s)
- Bin Zhao
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xiaoqiang Zhang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jingbo Mao
- College of Environmental and Chemical Engineering, Dalian University, Dalian 116622, China
| | - Yanli Wang
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Guanghui Zhang
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Zongchao Conrad Zhang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xinwen Guo
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
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2
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García-Cruz R, Gonzalez-Torres J, Montoya-Moreno A, Domínguez-Soria V, Luna-García H, Poulain E, Arellano J, Olvera-Neria O. The π back-donation influence in CO oxidation on small and oxidized Au–Ag clusters. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2022.111462] [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]
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3
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Li Q, Wu C, Wang K, Wang X, Chen X, Dai W, Fu X. Comparison of the catalytic performance of Au/TiO2 prepared by in situ photodeposition and deposition precipitation methods for CO oxidation at room temperature under visible light irradiation. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01829a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As compared with Au/TiO2-DP, the Au/TiO2-PD sample showed more electron transfer from TiO2 to Au sites, more activation of O2 induced by oxygen vacancies, and the more obvious photo-promoting effect induced by the LSPR effect.
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Affiliation(s)
- Qiuzhong Li
- Research Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350108, China
- College of Chemistry and Material, Ningde Normal University, Ningde, 352100, China
| | - Caijie Wu
- Research Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350108, China
- Qingyuan Innovation Laboratory, Quanzhou 362801, China
| | - Ke Wang
- Research Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350108, China
- Qingyuan Innovation Laboratory, Quanzhou 362801, China
| | - Xiaoxiao Wang
- Research Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350108, China
- Qingyuan Innovation Laboratory, Quanzhou 362801, China
| | - Xun Chen
- Research Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350108, China
- Qingyuan Innovation Laboratory, Quanzhou 362801, China
| | - Wenxin Dai
- Research Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350108, China
- Qingyuan Innovation Laboratory, Quanzhou 362801, China
| | - Xianzhi Fu
- Research Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350108, China
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4
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Arrahli A, Kherbeche A, Derrouiche S, Bianchi D. Heats of adsorption of linear CO species on the Pt sites of a 1.2% Pt-2.7% Sn/Al2O3 catalyst before and after reconstruction and ageing processes. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04533-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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5
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Wang H, Wang L, Lin D, Feng X, Niu Y, Zhang B, Xiao FS. Strong metal–support interactions on gold nanoparticle catalysts achieved through Le Chatelier’s principle. Nat Catal 2021. [DOI: 10.1038/s41929-021-00611-3] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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6
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Maksimov GM, Gerasimov EY, Kenzhin RM, Saraev AA, Kaichev VV, Vedyagin AA. CO oxidation over titania-supported gold catalysts obtained using polyoxometalate. REACTION KINETICS MECHANISMS AND CATALYSIS 2021. [DOI: 10.1007/s11144-020-01881-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Zhang J, Wang H, Wang L, Ali S, Wang C, Wang L, Meng X, Li B, Su DS, Xiao FS. Wet-Chemistry Strong Metal-Support Interactions in Titania-Supported Au Catalysts. J Am Chem Soc 2019; 141:2975-2983. [PMID: 30677301 DOI: 10.1021/jacs.8b10864] [Citation(s) in RCA: 140] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Classical strong metal-support interactions (SMSI), which play a crucial role in the preparation of supported metal nanoparticle catalysts, is one of the most important concepts in heterogeneous catalysis. The conventional wisdom for construction of classical SMSI involves in redox treatments at high-temperatures by molecular oxygen or hydrogen, sometimes causing sintered metal nanoparticles before SMSI formation. Herein, we report that the aforementioned issue can be effectively avoided by a wet-chemistry methodology. As a typical example, we demonstrate a new concept of wet-chemistry SMSI (wcSMSI) that can be constructed on titania-supported Au nanoparticles (Au/TiO2-wcSMSI), where the key is to employ a redox interaction between Auδ+ and Ti3+ precursors in aqueous solution. The wcSMSI is evidenced by covering Au nanoparticles with the TiO x overlayer, electronic interaction between Au and TiO2, and suppression of CO adsorption on Au nanoparticles. Owing to the wcSMSI, the Au-TiO x interface with an improved redox property is favorable for oxygen activation, accelerating CO oxidation. In addition, the oxide overlayer efficiently stabilizes the Au nanoparticles, achieving sinter-resistant Au/TiO2-wcSMSI catalyst in CO oxidation.
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Affiliation(s)
- Jian Zhang
- Key Laboratory of Applied Chemistry of Zhejiang Province, Department of Chemistry , Zhejiang University , Hangzhou 310028 , China.,Beijing Advanced Innovation Center for Soft Matter Science and Engineering , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Hai Wang
- Key Lab of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Liang Wang
- Key Lab of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Sajjad Ali
- Shenyang National Laboratory of Materials Science, Institute of Metal Research , Chinese Academy of Sciences , Shenyang 110016 , China
| | - Chengtao Wang
- Key Laboratory of Applied Chemistry of Zhejiang Province, Department of Chemistry , Zhejiang University , Hangzhou 310028 , China
| | - Lingxiang Wang
- Key Laboratory of Applied Chemistry of Zhejiang Province, Department of Chemistry , Zhejiang University , Hangzhou 310028 , China
| | - Xiangju Meng
- Key Laboratory of Applied Chemistry of Zhejiang Province, Department of Chemistry , Zhejiang University , Hangzhou 310028 , China
| | - Bo Li
- Shenyang National Laboratory of Materials Science, Institute of Metal Research , Chinese Academy of Sciences , Shenyang 110016 , China
| | - Dang Sheng Su
- Shenyang National Laboratory of Materials Science, Institute of Metal Research , Chinese Academy of Sciences , Shenyang 110016 , China.,Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics , Chinese Academy of Sciences , Dalian 116023 , China
| | - Feng-Shou Xiao
- Key Lab of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering , Zhejiang University , Hangzhou 310027 , China.,Key Laboratory of Applied Chemistry of Zhejiang Province, Department of Chemistry , Zhejiang University , Hangzhou 310028 , China.,Beijing Advanced Innovation Center for Soft Matter Science and Engineering , Beijing University of Chemical Technology , Beijing 100029 , China
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8
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A Contribution to the Experimental Microkinetic Approach of Gas/Solid Heterogeneous Catalysis: Measurement of the Individual Heats of Adsorption of Coadsorbed Species by Using the AEIR Method. Catalysts 2018. [DOI: 10.3390/catal8070265] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The two first surface elementary steps of a gas/solid catalytic reaction are the adsorption/desorption at least one of the reactants leading to its adsorption equilibrium which can be or not disturbed by the others surface elementary steps leading to the products. The variety of the sites of a conventional catalyst may lead to the formation of different coadsorbed species such as linear, bridged and threefold coordinated species for the adsorption of CO on supported metal particles. The aim of the present article is to summarize works performed in the last twenty years for the development and applications of an analytical method named Adsorption Equilibrium InfraRed spectroscopy (AEIR) for the measurement of the individual heats of adsorption of coadsorbed species and for the validation of mathematical expressions for their adsorption coefficients and adsorption models. The method uses the evolution of the IR bands characteristic of each of coadsorbed species during the increase in the adsorption temperature in isobaric conditions. The presentation shows that the versatility of AEIR leads to net advantages as compared to others conventional methods particularly in the context of the microkinetic approach of catalytic reactions.
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9
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Xing M, Zhou Y, Dong C, Cai L, Zeng L, Shen B, Pan L, Dong C, Chai Y, Zhang J, Yin Y. Modulation of the Reduction Potential of TiO 2- x by Fluorination for Efficient and Selective CH 4 Generation from CO 2 Photoreduction. NANO LETTERS 2018; 18:3384-3390. [PMID: 29701060 DOI: 10.1021/acs.nanolett.8b00197] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Photocatalytic reduction of CO2 holds great promises for addressing both the environmental and energy issues that are facing the modern society. The major challenge of CO2 photoreduction into fuels such as methane or methanol is the low yield and poor selectivity. Here, we report an effective strategy to enhance the reduction potential of photoexcited electrons by fluorination of mesoporous single crystals of reduced TiO2- x. Density functional theory calculations and photoelectricity tests indicate that the Ti3+ impurity level is upswept by fluorination, owing to the built-in electric field constructed by the substitutional F that replaces surface oxygen vacancies, which leads to the enhanced reduction potential of photoexcited electrons. As a result, the fluorination of the reduced TiO2- x dramatically increases the CH4 production yield by 13 times from 0.125 to 1.63 μmol/g·h under solar light illumination with the CH4 selectivity being improved from 25.7% to 85.8%. Our finding provides a metal-free strategy for the selective CH4 generation from CO2 photoreduction.
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Affiliation(s)
- Mingyang Xing
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , People's Republic of China
- Department of Chemistry , University of California Riverside , Riverside , California 92521 , United States
| | - Yi Zhou
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , People's Republic of China
| | - Chunyang Dong
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , People's Republic of China
| | - Lejuan Cai
- Department of Applied Physics , The Hong Kong Polytechnic University , Hung Hom, Kowloon , Hong Kong , People's Republic of China
| | - Lixi Zeng
- School of Environment, Guangzhou Key Laboratory of Environmental Exposure and Health, and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 510632 , People's Republic of China
| | - Bin Shen
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , People's Republic of China
| | - Lihan Pan
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , People's Republic of China
| | - Chencheng Dong
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , People's Republic of China
| | - Yang Chai
- Department of Applied Physics , The Hong Kong Polytechnic University , Hung Hom, Kowloon , Hong Kong , People's Republic of China
| | - Jinlong Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , People's Republic of China
| | - Yadong Yin
- Department of Chemistry , University of California Riverside , Riverside , California 92521 , United States
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10
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Couble J, Bianchi D. Experimental microkinetic approach of the CO/H2 reaction on Pt/Al2O3 using the Temkin formalism. 2. Coverages of the adsorbed CO and hydrogen species during the reaction and rate of the CH4 production. J Catal 2017. [DOI: 10.1016/j.jcat.2017.05.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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11
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Couble J, Bianchi D. Experimental microkinetic approach of the CO/H2 reaction on Pt/Al2O3 using the Temkin formalism. 1. Competitive chemisorption between adsorbed CO and hydrogen species in the absence of reaction. J Catal 2017. [DOI: 10.1016/j.jcat.2017.05.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Kanungo S, Su Y, Neira d'Angelo MF, Schouten JC, Hensen EJM. Epoxidation of propene using Au/TiO2: on the difference between H2 and CO as a co-reactant. Catal Sci Technol 2017. [DOI: 10.1039/c7cy00525c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The role of the reducing gas in the direct epoxidation of propene to propene oxide (PO) using O2 over a Au/TiO2 catalyst was studied through experiments and density functional theory calculations.
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Affiliation(s)
- Shamayita Kanungo
- Laboratory of Chemical Reactor Engineering
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- The Netherlands
| | - Yaqiong Su
- Laboratory of Inorganic Materials Chemistry
- Schuit Institute of Catalysis
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- The Netherlands
| | - M. F. Neira d'Angelo
- Laboratory of Chemical Reactor Engineering
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- The Netherlands
| | - Jaap C. Schouten
- Laboratory of Chemical Reactor Engineering
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- The Netherlands
| | - Emiel J. M. Hensen
- Laboratory of Inorganic Materials Chemistry
- Schuit Institute of Catalysis
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- The Netherlands
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13
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Zhang M, Hao J, Neyman A, Wang Y, Weinstock IA. Influence of Polyoxometalate Protecting Ligands on Catalytic Aerobic Oxidation at the Surfaces of Gold Nanoparticles in Water. Inorg Chem 2016; 56:2400-2408. [DOI: 10.1021/acs.inorgchem.6b02167] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mingfu Zhang
- Key Laboratory of
Colloid and Interface Science of the Education Ministry, Department
of Chemistry and Chemical Engineering, Shandong University, Ji’Nan 250100, P. R. China
| | - Jingcheng Hao
- Key Laboratory of
Colloid and Interface Science of the Education Ministry, Department
of Chemistry and Chemical Engineering, Shandong University, Ji’Nan 250100, P. R. China
| | - Alevtina Neyman
- Department of Chemistry and the Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva, 84105, Israel
| | - Yifeng Wang
- Key Laboratory of
Colloid and Interface Science of the Education Ministry, Department
of Chemistry and Chemical Engineering, Shandong University, Ji’Nan 250100, P. R. China
| | - Ira A. Weinstock
- Department of Chemistry and the Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva, 84105, Israel
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14
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Otto T, Ramallo-López JM, Giovanetti LJ, Requejo FG, Zones SI, Iglesia E. Synthesis of stable monodisperse AuPd, AuPt, and PdPt bimetallic clusters encapsulated within LTA-zeolites. J Catal 2016. [DOI: 10.1016/j.jcat.2016.07.017] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Jbir I, Couble J, Khaddar-Zine S, Ksibi Z, Meunier F, Bianchi D. Individual Heat of Adsorption of Adsorbed CO Species on Palladium and Pd–Sn Nanoparticles Supported on Al2O3 by Using Temperature-Programmed Adsorption Equilibrium Methods. ACS Catal 2016. [DOI: 10.1021/acscatal.5b02749] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Imen Jbir
- Institut
de Recherche sur la Catalyse et l’Environnement de Lyon (IRCELYON),
UMR 5256 CNRS, Université Claude Bernard Lyon I, Bat. Chevreul, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
- Laboratoire
de Chimie des Matériaux et Catalyse, Faculté des Sciences
de Tunis, Université de Tunis EL Manar, 2092 Tunis, France
| | - Julien Couble
- Institut
de Recherche sur la Catalyse et l’Environnement de Lyon (IRCELYON),
UMR 5256 CNRS, Université Claude Bernard Lyon I, Bat. Chevreul, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
| | - Sihem Khaddar-Zine
- Laboratoire
de Chimie des Matériaux et Catalyse, Faculté des Sciences
de Tunis, Université de Tunis EL Manar, 2092 Tunis, France
| | - Zouhaier Ksibi
- Laboratoire
de Chimie des Matériaux et Catalyse, Faculté des Sciences
de Tunis, Université de Tunis EL Manar, 2092 Tunis, France
| | - Fréderic Meunier
- Institut
de Recherche sur la Catalyse et l’Environnement de Lyon (IRCELYON),
UMR 5256 CNRS, Université Claude Bernard Lyon I, Bat. Chevreul, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
| | - Daniel Bianchi
- Institut
de Recherche sur la Catalyse et l’Environnement de Lyon (IRCELYON),
UMR 5256 CNRS, Université Claude Bernard Lyon I, Bat. Chevreul, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
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16
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Wu HC, Chen TC, Lai NC, Yang CM, Wu JH, Chen YC, Lee JF, Chen CS. Synthesis of sub-nanosized Pt particles on mesoporous SBA-15 material and its application to the CO oxidation reaction. NANOSCALE 2015; 7:16848-16859. [PMID: 26403094 DOI: 10.1039/c5nr04943a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this work, we show that the size and shape of Pt nanoparticles in SBA-15 can be controlled through vacuum and air calcination. The vacuum-calcination/H2-reduction process is used to thermally treat a 0.2 wt% Pt(4+)/SBA-15 sample to obtain small 2D clusters and single atoms that can significantly increase Pt dispersion in SBA-15. Compared with thermal treatments involving air-calcination/H2-reduction, which result in ∼4.6 nm rod-like Pt particles, vacuum-calcination/H2-reduction can dramatically reduce the size of the Pt species to approximately 0.5-0.8 nm. The Pt particles undergoing air-calcination/H2-reduction have poor conversion efficiency because the fraction of terrace sites, the major sites for CO oxidation, on the rod-like Pt particles is small. In contrast, a large amount of low-coordinated Pt sites associated with 2D Pt species and single Pt atoms in SBA-15 is effectively generated through the vacuum-calcination/H2-reduction process, which may facilitate CO adsorption and induce strong reactivity toward CO oxidation. We investigated the effect of vacuum-calcination/H2-reduction on the formation of tiny 2D clusters and single atoms by characterizing the particles, elucidating the mechanism of formation, determining the active sites for CO oxidation and measuring the heat of CO adsorption.
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Affiliation(s)
- Hung-Chi Wu
- Center for General Education, Chang Gung University, 259, Wen-Hua 1st Rd., Guishan Dist., Taoyuan City 333, Taiwan, Republic of China.
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17
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Yang K, Liu J, Si R, Chen X, Dai W, Fu X. Comparative study of Au/TiO2 and Au/Al2O3 for oxidizing CO in the presence of H2 under visible light irradiation. J Catal 2014. [DOI: 10.1016/j.jcat.2014.06.005] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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18
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Hinojosa-Reyes M, Rodríguez-González V, Zanella R. Gold nanoparticles supported on TiO2–Ni as catalysts for hydrogen purification via water–gas shift reaction. RSC Adv 2014. [DOI: 10.1039/c3ra45764h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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19
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Liu C, Tan Y, Lin S, Li H, Wu X, Li L, Pei Y, Zeng XC. CO Self-Promoting Oxidation on Nanosized Gold Clusters: Triangular Au3 Active Site and CO Induced O–O Scission. J Am Chem Soc 2013; 135:2583-95. [DOI: 10.1021/ja309460v] [Citation(s) in RCA: 164] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Chunyan Liu
- Department of Chemistry, Key Laboratory
of Environmentally
Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Hunan Province 411105, People’s
Republic of China
| | - Yingzi Tan
- Department of Chemistry, Key Laboratory
of Environmentally
Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Hunan Province 411105, People’s
Republic of China
| | - Sisi Lin
- Department of Chemistry, Key Laboratory
of Environmentally
Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Hunan Province 411105, People’s
Republic of China
| | - Hui Li
- Department of Chemistry and Nebraska
Center for Materials
and Nanoscience, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
| | - Xiaojun Wu
- CAS Key Laboratory of Materials
for Energy Conversion and Department
of Material Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026,
People’s Republic of China
| | - Lei Li
- Department of Chemistry and Nebraska
Center for Materials
and Nanoscience, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
| | - Yong Pei
- Department of Chemistry, Key Laboratory
of Environmentally
Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Hunan Province 411105, People’s
Republic of China
| | - Xiao Cheng Zeng
- Department of Chemistry and Nebraska
Center for Materials
and Nanoscience, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
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20
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Wu YY, Mashayekhi NA, Kung HH. Au–metal oxide support interface as catalytic active sites. Catal Sci Technol 2013. [DOI: 10.1039/c3cy00243h] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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22
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Samanta PN, Das KK. Adsorption of CO on pure and mixed clusters of tin and germanium up to five atoms: A theoretical study. COMPUT THEOR CHEM 2012. [DOI: 10.1016/j.comptc.2012.09.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Delgado JJ, Cíes JM, López-Haro M, del Río E, Calvino JJ, Bernal S. Recent Progress in Chemical Characterization of Supported Gold Catalysts: CO Adsorption on Au/Ceria–Zirconia. CHEM LETT 2011. [DOI: 10.1246/cl.2011.1210] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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24
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Uchiyama T, Yoshida H, Kuwauchi Y, Ichikawa S, Shimada S, Haruta M, Takeda S. Systematic Morphology Changes of Gold Nanoparticles Supported on CeO2 during CO Oxidation. Angew Chem Int Ed Engl 2011; 50:10157-60. [DOI: 10.1002/anie.201102487] [Citation(s) in RCA: 140] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Revised: 08/25/2011] [Indexed: 11/09/2022]
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25
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Uchiyama T, Yoshida H, Kuwauchi Y, Ichikawa S, Shimada S, Haruta M, Takeda S. Systematic Morphology Changes of Gold Nanoparticles Supported on CeO2 during CO Oxidation. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201102487] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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26
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Sun K, Kohyama M, Tanaka S, Takeda S. A theoretical study of CO adsorption on gold by Hückel theory and density functional theory calculations. J Comput Chem 2011; 32:3276-82. [DOI: 10.1002/jcc.21913] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Revised: 07/05/2011] [Accepted: 07/25/2011] [Indexed: 11/07/2022]
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Green IX, Tang W, Neurock M, Yates JT. Spectroscopic Observation of Dual Catalytic Sites During Oxidation of CO on a Au/TiO2 Catalyst. Science 2011; 333:736-9. [DOI: 10.1126/science.1207272] [Citation(s) in RCA: 815] [Impact Index Per Article: 62.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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28
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Honciuc A, Laurin M, Albu S, Sobota M, Schmuki P, Libuda J. Controlling the adsorption kinetics via nanostructuring: Pd nanoparticles on TiO2 nanotubes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:14014-14023. [PMID: 20698520 DOI: 10.1021/la102163a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Activity and selectivity of supported catalysts critically depend on transport and adsorption properties. Combining self-organized porous oxide films with different metal deposition techniques, we have prepared novel Pd/TiO(2) catalysts with a new level of structural control. It is shown that these systems make it possible to tune adsorption kinetics via their nanostructure. Self-organized TiO(2) nanotubular arrays (TiNTs) prepared by electrochemical methods are used as a support, on which Pd particles are deposited. Whereas physical vapor deposition (PVD) in ultrahigh vacuum (UHV) allows us to selectively grow Pd particles at the tube orifice, Pd/TiNT systems with homogeneously distributed Pd aggregates inside the tubes are available by particle precipitation (PP) from solution. Both methods also provide control over particle size and loading. Using in-situ infrared reflection absorption spectroscopy (IRAS) and molecular beam (MB) methods, we illustrate the relation between the nanostructure of the Pd/TiNT systems and their adsorption kinetics. Control over the metal nanoparticle distribution in the nanotubes leads to drastic differences in adsorption probability and saturation behavior. These differences are rationalized based on differences in surface and gas phase transport resulting from their nanostructure. The results suggest that using carefully designed metal/TiNT systems it may be possible to tailor transport processes in catalytically active materials.
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Affiliation(s)
- Andrei Honciuc
- Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, D-91058, Erlangen, Germany.
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29
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Gas–surface interactions with nanocatalysts: Particle size effects in the adsorption dynamics of CO on supported gold clusters. Chem Phys Lett 2009. [DOI: 10.1016/j.cplett.2009.10.083] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Dai W, Chen X, Zheng X, Ding Z, Wang X, Liu P, Fu X. Photocatalytic oxidation of CO on TiO(2): chemisorption of O(2), CO, and H(2). Chemphyschem 2009; 10:411-9. [PMID: 19021156 DOI: 10.1002/cphc.200800465] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
On the surface: Adsorption of O(2) at the surface oxygen vacancy (SOV) sites of TiO(2) reconstructs the lattice oxygen (healing SOVs), resulting in a decrease of the photocatalytic activity of oxidizing CO over vacuum-pretreated TiO(2) with increasing temperature (see scheme). Adsorption of H(2) produces new SOVs at the TiO(2) surface and stabilizes the photocatalytic activity. Photocatalytic oxidation of CO over vacuum-pretreated TiO(2) is performed in a series of systems with the introduction of O(2), CO, and H(2) in different orders. The photocatalytic oxidation of CO is dependent on the order of introduction of O(2), CO, or H(2), and introducing O(2) prior to CO promotes the oxidation of CO. Moreover, an increase of reaction temperature suppresses the oxidation of CO, but the preintroduction of H(2) reduces this suppression effect. The results of the chemisorption of O(2), CO, and H(2) at the TiO(2) surface reveal that the adsorbed O(2) heals the surface oxygen vacancy (SOV) sites of TiO(2), while the adsorbed CO and H(2) promote the formation of new SOVs. It is proposed that changes in the amounts of adsorbed O(2) and SOVs are mainly responsible for the differences of CO conversion in different systems.
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Affiliation(s)
- Wenxin Dai
- Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002, China
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31
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Molina L, Lesarri A, Alonso J. New insights on the reaction mechanisms for CO oxidation on Au catalysts. Chem Phys Lett 2009. [DOI: 10.1016/j.cplett.2008.11.087] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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32
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Rebrov EV, Berenguer-Murcia A, Johnson BF, Schouten JC. Gold supported on mesoporous titania thin films for application in microstructured reactors in low-temperature water-gas shift reaction. Catal Today 2008. [DOI: 10.1016/j.cattod.2008.06.029] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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33
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Quinet E, Piccolo L, Daly H, Meunier FC, Morfin F, Valcarcel A, Diehl F, Avenier P, Caps V, Rousset JL. H2-induced promotion of CO oxidation over unsupported gold. Catal Today 2008. [DOI: 10.1016/j.cattod.2008.04.042] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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34
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Collins SE, Baltanás MA, Bonivardi AL. Heats of adsorption and activation energies of surface processes measured by infrared spectroscopy. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.molcata.2007.08.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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35
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Xia X, Busser W, Strunk J, Muhler M. Thermodynamics of carbon monoxide adsorption on polycrystalline titania studied by static adsorption microcalorimetry. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:11063-6. [PMID: 17880113 DOI: 10.1021/la7014594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The adsorption of CO on polycrystalline TiO2 was investigated by static adsorption microcalorimetry. The initial differential heat of adsorption (qdiff,0) of CO on polycrystalline titania is 40 kJ/mol, and the standard adsorption entropy (Deltas0) is -104 J mol(-1) K(-1). These results are consistent with those derived from temperature-programmed desorption and FTIR results in the literature. The good reproducibility of the isotherms and the stable qdiff indicate that the lattice oxygen and hydroxyl groups on titania surface are basically not reactive to adsorbed CO.
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Affiliation(s)
- Xinyu Xia
- Laboratory of Industrial Chemistry, Ruhr-University Bochum, D-44780 Bochum, Germany.
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36
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Diemant T, Zhao Z, Rauscher H, Bansmann J, Behm RJ. Interaction of CO with planar Au/TiO2 model catalysts at elevated pressures. Top Catal 2007. [DOI: 10.1007/s11244-007-0281-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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37
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Influence of the catalyst surface area on the activity and stability of Au/CeO2 catalysts for the low-temperature water gas shift reaction. Top Catal 2007. [DOI: 10.1007/s11244-007-0292-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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38
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Vindigni F, Manzoli M, Chiorino A, Tabakova T, Boccuzzi F. CO Adsorption on Gold Clusters Stabilized on Ceria−Titania Mixed Oxides: Comparison with Reference Catalysts. J Phys Chem B 2006; 110:23329-36. [PMID: 17107183 DOI: 10.1021/jp064331v] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Fourier transform infrared spectra of CO adsorption from 120 K up to room temperature on two gold catalysts supported on different mixed ceria-titania oxides are discussed in comparison with those obtained on Au/TiO(2) and Au/Fe(2)O(3) reference catalysts provided by the World Gold Council. The spectra of adsorbed CO, run on the different samples before preliminary treatment, are shown and compared with those of the untreated catalysts and of the samples reduced either in CO or in hydrogen. Big differences have been found between the ceria-titania supported samples and the reference ones: unusual absorption bands, irreversible to outgassing, have been detected after CO interaction on the untreated and oxidized ceria containing samples. These absorptions are assigned to CO on Au(n)(+) small clusters stabilized at the ceria defects. By reduction in hydrogen, negatively charged Au(n)(-) species are produced on the same sample. Oxidized small particles are present on the reference catalysts, but only on the untreated samples; after treatment, only metallic step sites are evident.
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Affiliation(s)
- Floriana Vindigni
- Department of Inorganic, Physical and Materials Chemistry and NIS Centre of Excellence, University of Turin, via P. Giuria 7, 10125 Turin, Italy
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39
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Ortiz-Soto LB, Alexeev OS, Amiridis MD. Low temperature oxidation of CO over cluster-derived platinum-gold catalysts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:3112-7. [PMID: 16548565 DOI: 10.1021/la052358k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The structural and catalytic properties of SiO2- and TiO2 -supported Pt-Au bimetallic catalysts prepared by coimpregnation were compared with those of samples of similar composition synthesized from a Pt2Au4(C{triple bond}CBut)8 cluster precursor. The smallest metal particles were formed when the bimetallic cluster was used as a precursor and TiO2 as the support. FTIR data indicate that highly dispersed Au crystallites in these samples, presumably located in close proximity to Pt, are capable of linearly coordinating CO molecules with a characteristic vibration observed at 2111 cm(-1). The cluster-derived Pt2Au4/TiO2 samples were the only ones exhibiting low-temperature CO oxidation activity, indicating that both the high dispersion of Au and the nature of the support are important factors affecting the catalytic activity for this system.
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Affiliation(s)
- Lorna B Ortiz-Soto
- Department of Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, USA
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van der Eerden AMJ, Visser T, Nijhuis TA, Ikeda Y, Lepage M, Koningsberger DC, Weckhuysen BM. Atomic XAFS as a Tool to Probe the Electronic Properties of Supported Noble Metal Nanoclusters. J Am Chem Soc 2005; 127:3272-3. [PMID: 15755132 DOI: 10.1021/ja043107l] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Atomic XAFS is a very attractive technique for probing electronic properties of supported metal nanoclusters. For platinum nanoparticles on different supports, the technique is found to be in good agreement with infrared CO adsorption measurements. The advantages of AXAFS, however, are that no probe molecule is required and that real-time measurements under reaction conditions are possible.
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Affiliation(s)
- Ad M J van der Eerden
- Department of Inorganic Chemistry and Catalysis, Debye Institute, Utrecht University, Sorbonnelaan 16, 3584 CA Utrecht, The Netherlands
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41
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Garrone E, Otero Areán C. Variable temperature infrared spectroscopy: A convenient tool for studying the thermodynamics of weak solid–gas interactions. Chem Soc Rev 2005; 34:846-57. [PMID: 16172674 DOI: 10.1039/b407049f] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This tutorial review describes the use of variable temperature infrared spectroscopy of adsorbed species (VTIR), a recent method for studying the thermodynamics of weak solid-gas interactions. Examples show how a fundamental relationship of thermodynamics (the van't Hoff equation, used long since in several fields of physical chemistry) can describe equilibrium processes at the solid-gas interface. The VTIR method is fully exploited by measuring absorbance of an IR band, temperature and pressure over a wide temperature range: an estimation of the interaction energy is, however, possible even ignoring the equilibrium pressure. Precise thermodynamic characterization of solid-gas interactions is required in several fields: on the applied side, gas sensing, separation and storage, which involve such areas as work-place security, air pollution control and the energy sector; regarding fundamental knowledge, weak solid-gas interactions are relevant to a number of fields, including hydrogen bonding, coordination chemistry and surface phenomena in a broad sense. Infrared (IR) spectroscopy of (gas) molecules adsorbed on a solid is frequently used to characterize both, the adsorbed species and the adsorbing centres at the solid surface. The potential of the technique can be greatly enhanced by obtaining IR spectra over a temperature range, and simultaneously measuring IR absorbance, temperature and equilibrium pressure. When this is done, variable temperature infrared (VTIR) spectroscopy can be used not only for a more detailed surface characterization, but also for precise studies on the thermodynamics of solid-gas interactions. Furthermore, when weak interactions are concerned, the technique shows favourable features compared to adsorption calorimetry, or to other classical methods. The potential of the VTIR method is highlighted by reviewing recently reported studies on dihydrogen, dinitrogen and carbon monoxide adsorption on zeolites. To facilitate understanding, an outline of the basis of the method is also given, together with an appraisal of the critical points involved in its practical use.
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Affiliation(s)
- Edoardo Garrone
- Dipartimento di Scienza dei Materiali ed Ingegneria Chimica, Politecnico di Torino, 10129 Turin, Italy.
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