文献类型：期刊文献

英文题名：Enhancing Metal-Support Interactions by Molybdenum Carbide: An Efficient Strategy toward the Chemoselective Hydrogenation of ,-Unsaturated Aldehydes

作者：He, Sina[1];Shao, Zheng-Jiang[2,3];Shu, Yijin[1];Shi, Zhangping[4,5];Cao, Xiao-Ming[2,3];Gao, Qingsheng[1];Hu, Peijun[2,3];Tang, Yi[4,5]

机构：[1]Jinan Univ, Dept Chem, Guangzhou 510632, Guangdong, Peoples R China;[2]E China Univ Sci & Technol, Ctr Computat Chem, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China;[4]Fudan Univ, Dept Chem, Shanghai Key Lab Mol Catalysis & Innovat Mat, Adv Mat Lab, Shanghai 200433, Peoples R China;[5]Fudan Univ, Collaborat Innovat Ctr Chem Energy Mat, Shanghai 200433, Peoples R China

年份：2016

卷号：22

期号：16

起止页码：5698

外文期刊名：CHEMISTRY-A EUROPEAN JOURNAL

收录：;EI(收录号：20161502235719);WOS:【SCI-EXPANDED(收录号:WOS:000374017500035)】；

基金：This work is financially supported by the National Basic Research Program of China (2013CB934101), the National Natural Science Foundation of China (21373102, 21433002, 21333003, and 21303051), and the Fundamental Research Funds for the Central Universities (21615402). Q.S.G. is also thankful for the support from the Guangdong Natural Science Funds (2015A030306014 and 2014TQ01N036) and the Guangdong Higher Education Institute (YQ2013022).

语种：英文

外文关键词：carbides; hydrogenation; iridium; metal-support interactions; unsaturated aldehydes

摘要：Metal-support interactions are desired to optimize the catalytic turnover on metals. Herein, the enhanced interactions by using a Mo2C nanowires support were utilized to modify the charge density of an Ir surface, accomplishing the selective hydrogenation of ,-unsaturated aldehydes on negatively charged Ir- species. The combined experimental and theoretical investigations showed that the Ir- species derive from the higher work function of Ir (vs. Mo2C) and the consequently electron transfer. In crotonaldehyde hydrogenation, Ir/Mo2C delivered a crotyl alcohol selectivity as high as 80%, outperforming those of counterparts (<30%) on silica. Moreover, such electronic metal-support interactions were also confirmed for Pt and Au, as compared with which, Ir/Mo2C was highlighted by its higher selectivity as well as the better activity. Additionally, the efficacy for various substrates further verified our Ir/Mo2C system to be competitive for chemoselective hydrogenation.