Atomically Dispersed Pd Atoms on a Simple MgO Support with an Ultralow Loading for Selective Hydrogenation of Acetylene to Ethylene

被引：10

作者：

Qin, Chao ^{[1
,2
]}

Guo, Qing ^{[1
,2
]}

Guo, Jianping ^{[1
,2
]}

Chen, Ping ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

CHEMISTRY-AN ASIAN JOURNAL | 2021年 / 16卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Selective hydrogenation of acetylene; Atomically dispersed Pd atoms; MgO support; INTERMETALLIC COMPOUNDS; SEMIHYDROGENATION; CATALYSTS; CARBON; KINETICS; SITES;

D O I：

10.1002/asia.202100218

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report a simple and efficient Pd/MgO catalyst loaded with ppm level of Pd (7.8 ppm) for semi-hydrogenation of acetylene to ethylene. The catalyst showed excellent performance with high acetylene conversion (97%), high ethylene selectivity (89%) and good stability. Moreover, the atomically dispersed Pd atoms are inactive for ethylene hydrogenation. Isotopic and FTIR results suggest that H-2 dissociates at isolated Pd atoms in a heterolytic manner forming O-H bond, which may account for the high selectivity.

引用

页码：1225 / 1228

页数：4

共 30 条

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