Sn-doped PdAg/Al2O3 catalysts: Efficient catalysts for the selective hydrogenation of acetylene to ethylene under industrial conditions

被引：1

作者：

Backhouse, Tom ^{[1
]}

Earley, James H. ^{[1
]}

Mugo, Jane N. ^{[1
]}

Goodletb, Gregory ^{[2
]}

Jones, Glenn

Seljama-Green, Riho ^{[2
]}

Erden, Tugce E. ^{[2
]}

Forster, Matthew ^{[2
]}

Gomez, Pilar ^{[2
]}

Jackson, Simon W. ^{[1
]}

机构：

[1] Johnson Matthey Catalysts, Proc Catalysts & Technol, POB 1, Billingham TS23 1LB, Teesside, England

[2] Johnson Matthey Catalysts, Reading RG3 9NH, England

来源：

JOURNAL OF CATALYSIS | 2024年 / 436卷

关键词：

Industrial; Catalysis; Acetylene; Tail-end; Selective hydrogenation; Palladium; Silver; Tin; SUPPORTED PALLADIUM; NANOPARTICLES; DEACTIVATION; REGENERATION; PERFORMANCE; SILICENE; KINETICS; PD/SIO2; OLEFINS; CARBON;

D O I：

10.1016/j.jcat.2024.115600

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：

PdAg/Al2O3 catalysts were prepared using a simple and scalable preparation method. A systematic approach established a preparation-performance relationship which revealed that the Pd:Ag ratio and Pd reduction method affects the overall performance for the selective hydrogenation of acetylene to ethylene under industrially relevant tail-end reaction conditions. The addition of Sn improved selectivity with the optimum system achieving 97% selectivity towards ethylene, outperforming two industrial references. Density functional theory (DFT) simulations and electron microscopy analysis revealed that Sn integrates into the Pd lattice and increases the energy barrier for ethylene adsorption. This work demonstrates that Sn can be used to tailor catalyst performance for industrially relevant PdAg/Al2O3 catalysts.

引用

页数：16

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