Synthesis of V-MCM-41 Catalysts and Their Application in CO2-Assisted Isobutane Dehydrogenation

被引：4
|
作者：
Wang, Xiaosheng [1 ]
Ji, Kehong [1 ]
Zhou, Guanglin [1 ]
Li, Qin [1 ]
Zhou, Hongjun [1 ]
Xu, Chunming [1 ]
机构：
[1] China Univ Petr, State Key Lab Heavy Oil Proc, Inst New Energy, Beijing 102249, Peoples R China
来源：
CHEMICAL ENGINEERING & TECHNOLOGY | 2018年 / 41卷 / 03期
关键词：
Carbon dioxide; Dehydrogenation; In situ synthesis; Isobutane; V-MCM-41; SUPPORTED VANADIUM-OXIDE; PROPANE OXIDATIVE DEHYDROGENATION; N-BUTANE; LOWER ALKANES; OXYGEN-CHEMISORPTION; MESOPOROUS SILICAS; RAMAN-SPECTROSCOPY; REACTIVITY; STABILITY; MCM-41;
D O I：
10.1002/ceat.201700284
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A series of V-MCM-41 were in situ synthesized. The textual properties and vanadium species were systematically characterized. The results showed that the catalysts could still maintain a mesoporous structure and high specific surface area. The vanadium species were highly dispersed on the surface, with the coexistence of polymeric vanadium species. Isobutane dehydrogenation was performed by employing CO2 as a soft oxidant. The results revealed an almost linear relationship between the activity and surface vanadium sites. Isolated vanadium species were more active for isobutane dehydrogenation. The isobutane dehydrogenation reaction in the presence of CO2 could proceed simultaneously through oxidative dehydrogenation and non-oxidative dehydrogenation followed by the reverse water gas shift reaction.
引用
收藏
页码：563 / 572
页数：10
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