Insight into the role of iron in platinum-based bimetallic catalysts for selective hydrogenation of cinnamaldehyde  

作　　者：Ying Zhang Jinfang Su Junnan Chen Chengshan Dai Bingsen Zhang 

机构地区：[1]Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China [2]School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China [3]School of Petrochemical Engineering,Liaoning Pertochemical University,Fushun 113001,China

出　　处：《Chinese Chemical Letters》2022年第8期3757-3761,共5页中国化学快报（英文版）

基　　金：the financial support provided by the National Natural Science Foundation of China(No.21773269,22072164,21761132025,51932005);LiaoNing Revitalization Talents Program(No.XLYC1807175)。

摘　　要：Selective hydrogenation of cinnamaldehyde(CAL)toward cinnamyl alcohol(COL)is an extremely important and challenging reaction.Herein,a series of Pt_(x)Fe_(y)-Al_(2)O_(3) bimetallic catalysts with varied Pt to Fe ratios were prepared by incipient wetness impregnation method.The introduction of Fe significantly modifies the electronic and surface properties of Pt,which clearly enhances the C=O hydrogenation selectivity.Among all the catalysts,Pt_(3)Fe-Al_(2)O_(3) displays the best catalytic performance and the conversion of CAL is 96.6%with 77.2%selectivity of COL within 1 h.In addition,Pt_(3)Fe-Al_(2)O_(3) had excellent reusability with 76%COL selectivity after five runs of the recycle process.Further characterization of the fresh,used and cycled catalysts revealed that the structure and electronic state of the synthesized Pt_(x)Fe_(y)-Al_(2)O_(3) are unchanged after hydrogenation reaction.The identical-location transmission electron microscopy(ILTEM)results revealed that the interaction between the nanoparticles and the supports was strong and the catalyst was relatively stable.

关 键 词：Pt_(x)Fe_(y)NPs CINNAMALDEHYDE HYDROGENATION CHEMOSELECTIVE IL-TEM 

分 类 号：TQ243.4[化学工程—有机化工] TQ426