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Mechanistic insights into the effects of support on the reaction pathway for aqueous-phase hydrogenation of carboxylic acid over the supported Ru catalysts
Chen, Lungang; Li, YuPing; Zhang, Xinghua; Zhang, Qi; Wang, Tiejun; Ma, Longlong
2014-05-20
Source PublicationAPPLIED CATALYSIS A-GENERAL
Volume478Pages:117-128
AbstractSeveral supported Ru catalysts, Ru/TiO2, Ru/ZrO2, Ru/SiO2, Ru/gamma-Al2O3 and Ru/SiO2-Al2O3, were prepared and investigated for propanoic acid aqueous-phase hydrogenation. H-2-TPR, NH3-TPD, pyridine-FTIR and propanoic acid-DRIFTS techniques were performed to explore the metal-support interaction, acid sites and key adsorption species. The effect of support on the reaction pathway of C=O hydrogenation and decarbonylation of acyl species was discussed. Compared with Ru/ZrO2 and Ru/SiO2 catalysts, high selectivity of C=O hydrogenation was obtained over the catalysts with more Lewis acid sites, such as Ru/gamma-Al2O3 and Ru/SiO2-Al2O3 catalysts. The DRIFTS results suggest that the formation of adsorption species (acyl, carboxylate and carboxylic acid) is strongly depended on the nature of support. The metal-acid bifunctional sites are indispensable for the C=O hydrogenation of acyl. However, the decarbonylation of acyl on the metal sites requires the relatively weak metal-support interaction and few of Lewis acid sites. (C) 2014 Elsevier B.V. All rights reserved.
SubtypeArticle
KeywordAqueous-phase Hydrogenation Ru Catalyst Effect Of Support Acyl Decarbonylation Drifts
WOS HeadingsScience & Technology ; Physical Sciences ; Life Sciences & Biomedicine
DOI10.1016/j.apcata.2014.03.038
WOS Subject ExtendedChemistry ; Environmental Sciences & Ecology
WOS KeywordACETIC-ACID ; RUTHENIUM CATALYSTS ; CO ADSORPTION ; LACTIC-ACID ; METAL-CATALYSTS ; FTIR ; REDUCTION ; ETHANOL ; SURFACE ; H-2
Indexed BySCI
Language英语
WOS SubjectChemistry, Physical ; Environmental Sciences
WOS IDWOS:000336878800015
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10691
Collection中国科学院广州能源研究所
AffiliationChinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Chen, Lungang,Li, YuPing,Zhang, Xinghua,et al. Mechanistic insights into the effects of support on the reaction pathway for aqueous-phase hydrogenation of carboxylic acid over the supported Ru catalysts[J]. APPLIED CATALYSIS A-GENERAL,2014,478:117-128.
APA Chen, Lungang,Li, YuPing,Zhang, Xinghua,Zhang, Qi,Wang, Tiejun,&Ma, Longlong.(2014).Mechanistic insights into the effects of support on the reaction pathway for aqueous-phase hydrogenation of carboxylic acid over the supported Ru catalysts.APPLIED CATALYSIS A-GENERAL,478,117-128.
MLA Chen, Lungang,et al."Mechanistic insights into the effects of support on the reaction pathway for aqueous-phase hydrogenation of carboxylic acid over the supported Ru catalysts".APPLIED CATALYSIS A-GENERAL 478(2014):117-128.
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