Oxidative Dehydrogenation of Ethane with CO2 over Au/CeO2 Nanorod Catalysts

被引：24
|
作者：
Lei, Tianqi [1 ]
Miao, Changxi [2 ]
Hua, Weiming [1 ]
Yue, Yinghong [1 ]
Gao, Zi [1 ]
机构：
[1] Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Dept Chem, Shanghai 200433, Peoples R China
[2] Shanghai Res Inst Petrochem Technol, Shanghai 201208, Peoples R China
来源：
CATALYSIS LETTERS | 2018年 / 148卷 / 06期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Ethane dehydrogenation; Au catalyst; CeO2; Nanorod; CO2; WATER-GAS SHIFT; OXIDE CATALYSTS; CARBON-DIOXIDE; AU/TIO2; CATALYSTS; GOLD CATALYSTS; CERIA NANORODS; GALLIUM OXIDE; SOFT OXIDANT; PROPANE; ETHYLBENZENE;
D O I：
10.1007/s10562-018-2389-1
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：
Dehydrogenation of ethane to ethylene in the presence or absence of CO2 over Au catalysts supported on nanorod and nanoparticle ceria was investigated. The nanorod CeO2 supported Au exhibits higher activity as well as higher stability, with an ethane conversion of 17% and ethylene selectivity of 98% without any observable trend of deactivation in 6 h. The surface oxygen reducibility of the catalysts plays an important role in the dehydrogenation which can be greatly enhanced by the addition of Au. The promoting effect of CO2 on stability is caused by reducing coke by the Boudouard reaction and supplementing the reducible oxygen specie of CeO2 surface sustainably. [GRAPHICS] .
引用
收藏
页码：1634 / 1642
页数：9
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