文献类型：期刊文献

英文题名：Crucial size effect on dicarbonylation of acetylene over Pd/CsHPMo heterogeneous catalysts

作者：Wei, Xuemei[1,2,3];Kai, Wang[1,2];Wu, Guofeng[4];Yu, Guoqi[1,2];Shen, Hualiang[1,2];Tao, Cai[1,2];Luo, Yanjuan[1,2];Shang, Tianbo[1,2];Chen, Xinzhi[3];Shen, Runpu[1,2];Bin, Hu[5]

机构：[1]Shaoxing Univ, Coll Chem & Chem Engn, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Zhejiang Engn Res Ctr Fat soluble Vitamin, Shaoxing 312000, Peoples R China;[3]Zhejiang Univ, Coll Chem & Biol Engn, Hangzhou 310027, Peoples R China;[4]Zhejiang Med Co Ltd, Shaoxing 312000, Peoples R China;[5]Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China

年份：2024

卷号：53

期号：45

起止页码：18217

外文期刊名：DALTON TRANSACTIONS

收录：SCI-EXPANDED(收录号：WOS:001347617300001)、、EI(收录号：20244617363666)、Scopus(收录号：2-s2.0-85208734695)、WOS

基金：This research was financially supported by the National Natural Science Foundation of China (No. 22278270). Scientific Research Project of Education Department of Zhejiang Province (No. Y202454363).

语种：英文

外文关键词：Association reactions

外文摘要：The structure-sensitive activity of Pd catalysts in carbonylation reactions is an urgent problem to be explored. Herein, Pd nanocrystals with uniform particle sizes (2.3 nm, 3.4 nm, 5.0 nm and 6.7 nm) were produced by using PVP to regulate the growth of Pd nanoparticles. The catalytic carbonylation reaction showed a "volcanic curve" with the increase in Pd particle size, and the obtained Pd/CsHPMo catalyst with 5 nm Pd nanoparticles was preferred. The 5.0Pd/CsHPMo catalyst, with the strongest "SMSI effect", shows the strongest Pd-CsHPMo interaction, and the generated electron-deficient Pd active sites accelerated the cycle of Pd delta+ <-> Pd (0), which endows its excellent catalytic efficiency. Meanwhile, DRIFTS in association with C2H2-TPD confirmed that the activation capacity of CO and C2H2 gas varies greatly on various Pd particle-size centers. These results provide a method for the accurate design of high-performance carbonylation catalysts.