RHODIUM-CATALYZED PARTIAL OXIDATION OF METHANE TO CO AND H-2 - TRANSIENT STUDIES ON ITS MECHANISM

被引：143
作者：
BUYEVSKAYA, OV
WOLF, D
BAERNS, M
机构：
[1] RUHR UNIV BOCHUM,LEHRSTUHL TECH CHEM,D-44780 BOCHUM,GERMANY
[2] BORESKOV CATALYSIS INST,NOVOSIBIRSK 630090,RUSSIA
来源：
CATALYSIS LETTERS | 1994年 / 29卷 / 1-2期
关键词：
PARTIAL OXIDATION OF METHANE; SYNTHESIS GAS; RH/GAMMA-AL2O3; TRANSIENT-STUDY; TEMPORAL ANALYSIS OF PRODUCTS;
D O I：
10.1007/BF00814271
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 reaction of methane with surface oxygen as well as the interaction of methane/oxygen mixtures with a Rh(1 wt%)/gamma-Al2O3 catalyst was studied by applying the temporal-analysis-of-product (TAP) reactor. The product distribution was strongly affected by the degree of surface reduction. CO2 is formed as a primary product via a redox mechanism with the participation of surface oxygen. The dehydrogenation of methane yielding carbon deposits on the surface occurs on reduced surface sites. The formation of CO proceeds with high selectivity (up to 96%) at 1013 K via fast reaction of surface carbon species with CO2.
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页码：249 / 260
页数：12
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