Synthesis of Co-Sn intermetallic nanocatalysts toward selective hydrogenation of citral
文献类型:期刊论文
作者 | Zhou, Junyao1; Yang, Yusen1; Li, Changming2; Zhang, Shitong1; Chen, Yudi1; Shi, Shuxian1; Wei, Min1 |
刊名 | JOURNAL OF MATERIALS CHEMISTRY A |
出版日期 | 2016 |
卷号 | 4期号:33页码:12825-12832 |
ISSN号 | 2050-7488 |
英文摘要 | In this work, three supported Co-Sn intermetallic compound (IMC) catalysts (Co2.9Sn2, CoSn and CoSn2) with a particle size of similar to 20 nm were prepared via a facile hydrotalcite approach, and their catalytic performances were evaluated in the selective hydrogenation of citral to unsaturated alcohols (geraniol and nerol). EXAFS, in situ CO-FTIR and DFT calculation results reveal that the introduction of Sn in Co-Sn IMCs dramatically optimizes the geometric and electronic structures of active Co, in which Sn isolates the Co active-site and electron transfer occurs from Sn to the Co atom. H-2-TPD measurements indicate the presence of four different Co sites (labeled as alpha, beta, gamma and sigma) on the surface of these IMCs; the sample of CoSn IMC shows the largest beta/(gamma + sigma) ratio, which results in the highest selectivity toward unsaturated alcohols (SUA: 67.6%). DFT studies prove that the geometric and electronic effects of the CoSn IMC weaken the hydrogenation of the C=C group, accounting for the largely enhanced hydrogenation selectivity of citral to unsaturated alcohols. |
WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
类目[WOS] | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
研究领域[WOS] | Chemistry ; Energy & Fuels ; Materials Science |
关键词[WOS] | FISCHER-TROPSCH SYNTHESIS ; LIQUID-PHASE HYDROGENATION ; BETA-UNSATURATED ALDEHYDES ; CATALYTIC-PROPERTIES ; ALPHA,BETA-UNSATURATED ALDEHYDES ; CHEMOSELECTIVE HYDROGENATION ; CO/SIO2 CATALYSTS ; ACETYLENE ; SURFACE ; ADSORPTION |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000382015100016 |
源URL | [http://ir.ipe.ac.cn/handle/122111/21313] |
专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
作者单位 | 1.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China |
推荐引用方式 GB/T 7714 | Zhou, Junyao,Yang, Yusen,Li, Changming,et al. Synthesis of Co-Sn intermetallic nanocatalysts toward selective hydrogenation of citral[J]. JOURNAL OF MATERIALS CHEMISTRY A,2016,4(33):12825-12832. |
APA | Zhou, Junyao.,Yang, Yusen.,Li, Changming.,Zhang, Shitong.,Chen, Yudi.,...&Wei, Min.(2016).Synthesis of Co-Sn intermetallic nanocatalysts toward selective hydrogenation of citral.JOURNAL OF MATERIALS CHEMISTRY A,4(33),12825-12832. |
MLA | Zhou, Junyao,et al."Synthesis of Co-Sn intermetallic nanocatalysts toward selective hydrogenation of citral".JOURNAL OF MATERIALS CHEMISTRY A 4.33(2016):12825-12832. |
入库方式: OAI收割
来源:过程工程研究所
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