期刊
CATALYSIS COMMUNICATIONS
卷 115, 期 -, 页码 12-16出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2018.06.016
关键词
Ordered mesoporous alumina; Vanadium oxide; Ethylbenzene dehydrogenation; Catalyst deactivation; Carbon dioxide
资金
- Foundation of Sate Key Laboratory of Coal Conversion [J18-19-906]
- National Natural Science Foundation of China [21546009]
- International Cooperation Project [2015081048]
- Shanxi Provincial Key Innovative Research Team in Science and Technology [2014131006]
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.
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