Title: CO<sub>2</sub>Methanation over Supported Ru/Al<sub>2</sub>O<sub>3</sub>Catalysts: Mechanistic Studies by<i>In situ</i>Infrared Spectroscopy
Abstract: ChemistrySelectVolume 1, Issue 12 p. 3197-3203 Full Paper CO2 Methanation over Supported Ru/Al2O3 Catalysts: Mechanistic Studies by In situ Infrared Spectroscopy Dr. Jian Zheng, Corresponding Author Dr. Jian Zheng [email protected] State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Qinglong Road 59, Mianyang, 621010 PR China Catalysis Research Center, Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, GermanySearch for more papers by this authorChengyang Wang, Chengyang Wang Catalysis Research Center, Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, GermanySearch for more papers by this authorProf. Dr. Wei Chu, Prof. Dr. Wei Chu Department of Chemical Engineering, Sichuan University, Yihuan Road 24, South section one, 610065 Chengdu, ChinaSearch for more papers by this authorProf. Yuanlin Zhou, Prof. Yuanlin Zhou State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Qinglong Road 59, Mianyang, 621010 PR ChinaSearch for more papers by this authorProf. Dr. Klaus Köhler, Corresponding Author Prof. Dr. Klaus Köhler [email protected] Catalysis Research Center, Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, GermanySearch for more papers by this author Dr. Jian Zheng, Corresponding Author Dr. Jian Zheng [email protected] State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Qinglong Road 59, Mianyang, 621010 PR China Catalysis Research Center, Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, GermanySearch for more papers by this authorChengyang Wang, Chengyang Wang Catalysis Research Center, Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, GermanySearch for more papers by this authorProf. Dr. Wei Chu, Prof. Dr. Wei Chu Department of Chemical Engineering, Sichuan University, Yihuan Road 24, South section one, 610065 Chengdu, ChinaSearch for more papers by this authorProf. Yuanlin Zhou, Prof. Yuanlin Zhou State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Qinglong Road 59, Mianyang, 621010 PR ChinaSearch for more papers by this authorProf. Dr. Klaus Köhler, Corresponding Author Prof. Dr. Klaus Köhler [email protected] Catalysis Research Center, Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, GermanySearch for more papers by this author First published: 09 August 2016 https://doi.org/10.1002/slct.201600651Citations: 36Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Graphical Abstract Two reaction paths for CO2 methanation over Ru/Al2O3 were identified: a) CO acted as the active intermediate for the hydrogenation of by adsorbed H atoms. b) Formyl species formed by reduction of adsorbed CO2 are converted fast to methane by hydrogenation with surface H atoms. Abstract Alumina supported ruthenium particles with an average diameter of 2 nm were prepared by a modified ethylene glycol reduction method. Catalytic methanation of CO2 over this catalyst was studied by in situ FTIR spectroscopy. After pretreatment in H2, different types of adsorbed species were detected on the catalyst surface at 200 °C. Based on a series of targeted experiments under variation of gas composition, order of addition, reaction time and temperature, a reaction scheme and the rate-determining steps of CO2 methanation are proposed. Two potential reaction paths for the hydrogenation of CO2 to form CH4 were identified: (I) CO adsorbed on the Ru metal surface acted as active intermediate and the CO methanation followed. The dissociation of CO to form surface carbon represents the rate-determining step. (II) Formyl species formed by hydrogenation of adsorbed CO2 are the active intermediate and the formation of formyl was the rate-determining step. Citing Literature Supporting Information As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Filename Description slct201600651-sup-0001-misc_information.pdf143 KB Supplementary Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Volume1, Issue12August 1, 2016Pages 3197-3203 RelatedInformation
Publication Year: 2016
Publication Date: 2016-08-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 56
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