Ordered mesoporous alumina-supported vanadium oxides as an efficient catalyst for ethylbenzene dehydrogenation to styrene with CO2

被引：12
|
作者：
Zhu, Cun [1 ]
Chen, Shuwei [1 ]
Pan, Dahai [1 ]
Cui, Xingyu [1 ]
Qiao, Yan [2 ]
Li, Ruifeng [1 ]
机构：
[1] Taiyuan Univ Technol, Coll Chem & Chem Engn, Taiyuan 030024, Shanxi, Peoples R China
[2] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2018年 / 115卷
基金：
中国国家自然科学基金;
关键词：
Ordered mesoporous alumina; Vanadium oxide; Ethylbenzene dehydrogenation; Catalyst deactivation; Carbon dioxide; HIGH THERMAL-STABILITY; CARBON-DIOXIDE; OXIDATIVE DEHYDROGENATION; SOFT OXIDANT; FACILE SYNTHESIS; IRON-OXIDES;
D O I：
10.1016/j.catcom.2018.06.016
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：
Ordered mesoporous alumina (OMA)-supported vanadia catalysts with different vanadium loading (denoted as nV/OMA) were employed for ethylbenzene dehydrogenation to styrene with CO2 as soft oxidant, and a commercial gamma-Al2O3-supported vanadia catalyst for comparison. The catalytic behavior depends strongly on the vanadium loading and the support properties. With an optimal V loading of 0.8 mmol/g-support, 0.8 V/OMA catalyst exhibits superior catalytic performance than that of 0.8 V/gamma-Al2O3, which can be attributed to the excellent structural, textual, and surface properties of OMA support. The important roles played by OMA lies in stabilizing highly dispersed V5+ active species and preventing the coke formation.
引用
收藏
页码：12 / 16
页数：5
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