Microwave-assisted ammonia synthesis over Cs-Ru/CeO2 catalyst at ambient pressure: Effects of metal loading and support particle size

被引：20

作者：

Araia, Alazar ^{[1
]}

Wang, Yuxin ^{[1
]}

Robinson, Brandon ^{[1
]}

Jiang, Changle ^{[1
]}

Brown, Siobhan ^{[1
]}

Wildfire, Christina ^{[2
]}

Shekhawat, Dushyant ^{[2
]}

Hu, Jianli ^{[1
]}

机构：

[1] West Virginia Univ, Dept Chem & Biomed Engn, Morgantown, WV 26506 USA

[2] US DOE, Natl Energy Technol Lab, Morgantown, WV USA

来源：

CATALYSIS COMMUNICATIONS | 2022年 / 170卷

关键词：

Ammonia synthesis; Microwave irradiation; Cs-Ru; CeO; 2; catalyst; Ru particle size and dispersion; Oxygen vacancy; RUTHENIUM CATALYSTS; RU/CEO2; CATALYSTS; OXYGEN VACANCIES; TEMPERATURE; NH3; STABILITY; PROMOTION; OXIDATION; BARIUM; CEO2;

D O I：

10.1016/j.catcom.2022.106491

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：

Industrially, ammonia is produced by Haber-Bosch process under high temperatures and pressures, consuming more than >2% of the world's energy production. This paper presents microwave-assisted catalytic synthesis of ammonia operated at atmospheric pressure and temperatures from 260 to 360 degrees C. A Cs-promoted Ru catalyst supported on cerium oxide with different metal loading (4-24 wt% Ru) and support particle size (25 nm, 50 nm and 5 mu m) was investigated. The small size cerium oxide support resulted in the highest activity while the large cerium oxide support was less favorable, leading to lower activity associated to large Ru particle size and lower dispersion.

引用

页数：8

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