METHANE PARTIAL OXIDATION TO FORMALDEHYDE ON SILICA-SUPPORTED OXIDE CATALYSTS - ROLE OF MOO3 AND V2O5

被引：0
|
作者：
PARMALIANA, A
SOKOLOVSKII, V
SCURRELL, MS
MICELI, D
ARENA, F
FRUSTERI, F
机构：
[1] UNIV WITWATERSRAND, DEPT CHEM, JOHANNESBURG 2050, SOUTH AFRICA
[2] CSIR, DIV ENERGY TECHNOL, PRETORIA 0001, SOUTH AFRICA
[3] IST CNR TAE, I-98126 MESSINA, ITALY
来源：
NATURAL GAS CONVERSION II | 1994年 / 81卷
关键词：
D O I：
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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：
The partial oxidation of methane to formaldehyde with molecular O-2 has been investigated on various commercial bare SiO2 samples and silica supported MoO3 and V2O5 catalysts at 550-650 degrees C in a batch reactor at 1.7 bar. The acidic properties of the catalysts have been compared by ZPC and NH3-TPD measurements. A straight correlation between the density of reduced sites (rho) evaluated in steady-state conditions by O-2 chemisorption, and the reaction rate has been disclosed. MoO3 and V2O5 dopants modify the catalytic properties of SiO2 by affecting the process of oxygen activation on the catalyst surface.
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页码：491 / 496
页数：6
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