Phenylcarbazole-stabilized palladium catalysts for efficient acetylene hydrochlorination

被引:0
|
作者
Ali, Shahid [1 ]
Wang, Lu [1 ,2 ]
Yan, Haijun [1 ]
Dang, Lei [1 ]
Yang, Chao [1 ]
Wang, Jide [1 ]
Sun, Hui [1 ,3 ]
Li, Xiaofei [2 ]
Wu, Ronglan [1 ]
Liang, Changhai [4 ]
机构
[1] Xinjiang Univ, Sch Chem Engn, Key Lab Oil & Gas Fine Chem, Minist Educ & Xinjiang Uygur Autonomous Reg, Urumqi 830017, Peoples R China
[2] China Merchants Xinjiang Qual Testing Technol Res, Urumqi 841100, Peoples R China
[3] East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
[4] Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116086, Peoples R China
基金
中国国家自然科学基金;
关键词
VINYL-CHLORIDE MONOMER; VAPOR-PHASE HYDROCHLORINATION; GOLD CATALYSTS; BASIS-SET; GREEN; PD; NANOPARTICLES; DEACTIVATION; FABRICATION; DISCOVERY;
D O I
10.1039/d4cy01414f
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
9-Phenylcarbazole (PCz) was employed to synthesize Pd-based/SAC catalysts using an ultrasonic-assisted impregnation method for acetylene hydrochlorination. The catalytic performance of the Pd-PCz/SAC catalysts was investigated, and the Pd-15PCz/SAC catalyst achieved 99.9% C2H2 conversion and over 99% vinyl chloride monomer (VCM) selectivity, with negligible catalyst deactivation over 380 h. Characterization demonstrated that the addition of PCz effectively stabilized the active Pd(ii) particles, inhibited carbon deposition, and prevented the loss of active Pd species. Density functional theory (DFT) simulations further verified the positive effect of PCz modification on the Pd-based/SAC catalyst by altering the energy profiles of reaction pathways and the adsorption energies of reactants and products, thus enhancing catalytic efficiency.
引用
收藏
页码:2272 / 2285
页数:14
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