Atomically dispersed lr/α-MoC catalyst with high metal loading and thermal stability for water-promoted hydrogenation reaction

查看全文 作　　者：Siwei [1]Li;Ruochen [1]Cao;Mingquan [2]Xu;Yuchen [1]Deng;Lili [1]Lin;Siyu [1]Yao;Xuan [1]Liang;Mi [1]Peng;Zirui [1]Gao;Yuzhen [1]Ge;Jin-Xun [3]Liu;Wei-Xue [3]Li;Wu [2,4]Zhou;Ding [1]Ma

机构地区：[1]Beijing National Laboratory for Molecular Sciences,College of Chemistry and Molecular Engineering and College of Engineering,and BIC-ESAT,Peking University,Beijing 100871,China;[2]School of Physical Sciences日nd CAS Key Laboratory of Vacuum Physics,University of Chinese Academy of Sciences,Beijing 100049,China;[3]School of Chemistry and Materials Science,CAS Excellence Centei for Nanoscience,Hetei National Laboiatoiy for Physical Sciences at the Microscale,iChEM,University of Science and Technology of China,Hefei 230026,China;[4]CAS Center for Excellence in Topological Quantum Computation,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《National Science Review》索引2022年第9卷第1期,共10页

基　　金：This work was financially supported by the National Key R&D Program of China(2017YFB0602200);the National Natural Science Foundation of China(21725301;21932002 and 21821004);supported by the Beijing Outstanding Young Scientist Program(BJJWZYJH01201914430039);the Key Research Program of Frontier Sciences,Chinese Academy of Sciences(QYZDB-SSWJSC019);the Fundamental Research Funds for the Central Universities。 摘　　要：Synthesis of atomically dispersed catalysts with high metal loading and thermal stability is challenging but particularly valuable for industrial application in heterogeneous catalysis.Here,we report a facile synthesis of a thermally stable atomically dispersed Ir/α-MoC catalyst with metal loading as high as 4 wt%,an unusually high value for carbide supported metal catalysts.The strong interaction between Ir and theα-MoC substrate enables high dispersion of Ir on the α-MoC surface,and modulates the electronic structure of the supported Ir species.Using quinoline hydrogenation as a model reaction,we demonstrate that this atomically dispersed Ir/α-MoC catalyst exhibits remarkable reactivity,selectivity and stability,for which the presence of high-density isolated Ir atoms is the key to achieving high metal-normalized activity and mass-specific activity.We also show that the water-promoted quinoline hydrogenation mechanism is preferred over the Ir/α-MoC,and contributes to high sele ctivity towards 1,2,3,4-tetrahydroquinoline.The present work demonstrates a new strategy in constructing a high-loading atomically dispersed catalyst for the hydrogenation reaction. 关键词：atomically dispersed catalysts high metal loading molybdenum carbide hydrogenation of quinoline

相关文献

参考文献（50）
引证文献（1）
耦合文献（18）

参考文献(50)

引证文献(1)

耦合文献(18)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Atomically dispersed lr/α-MoC catalyst with high metal loading and thermal stability for water-promoted hydrogenation reaction

参考文献(50)

引证文献(1)

耦合文献(18)

用户提示