Role of SnO2 over Sn-W-Mn/SiO2 catalysts for oxidative coupling of methane reaction at elevated pressure

被引：0
|
作者：
Chou, LJ [1 ]
Cai, YC [1 ]
Zhang, B [1 ]
Yang, J [1 ]
Zhao, J [1 ]
Niu, JZ [1 ]
Li, SB [1 ]
机构：
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China
来源：
NATURAL GAS CONVERSION VII | 2004年 / 147卷
关键词：
D O I：
暂无
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
The SnO(2)-doped W-Mn/SiO(2) catalyst for oxidative coupling of methane (OCM) to high hydrocarbons has been studied in a micro- stainless-steel reactor at elevated pressure. Under 750degreesC, 1.0 x 10(5) h(-1) GHSV and 0.6MPa, 20.3% yield of C(2)(+) hydrocarbons and 29.7% CH(4) conversion with 33.5% selectivity of C(3) similar to C(4) is obtained. The storage-oxygen capability in W-Mn/SiO(2) catalyst is enhanced with adding SnO(2), SnO(2) promotes the migration of Na, W and Mn to the catalyst surface; W(5+) possibly existed over the surface of SnO(2) doped W-Mn/SiO(2) catalyst.
引用
收藏
页码：619 / 624
页数：6
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