Direct conversion of methane to methanol and formaldehyde over a double-layered catalyst bed in the presence of steam

被引:14
|
作者
Shi, CL
Sun, Q
Hu, HC
Herman, RG
Klier, K
Wachs, IE
机构
[1] LEHIGH UNIV, DEPT CHEM ENGN, BETHLEHEM, PA 18015 USA
[2] LEHIGH UNIV, ZETTLEMOYER CTR SURFACE STUDIES, SINCLAIR LAB, BETHLEHEM, PA 18015 USA
关键词
D O I
10.1039/cc9960000663
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Using a double-bed reactor configuration with an up-stream 1 mass% SO42-/1 mass% SrO/La2O3 catalyst to generate methyl radicals and a down-stream 1 mass% V2O5/SiO2 catalyst to stabilize the methyl radicals for reaction to form hydrolysable methoxide species, the methanol and formaldehyde space-time yields are increased up to five-fold for partial oxidation of methane in the presence of air and steam at moderate temperatures of 550-600 degrees C as compared with the single-bed 1 mass% V2O5/SiO2 catalyst, while little of these oxygenates are formed over a mechanically mixed catalyst bed.
引用
收藏
页码:663 / 664
页数:2
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