TRANSIENT STUDIES ON OXYGEN ACTIVATION ON A SM2O3 SURFACE IN THE OXIDATIVE COUPLING OF METHANE

被引：8
作者：
BUYEVSKAYA, OV
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 TODAY | 1994年 / 21卷 / 2-3期
关键词：
D O I：
10.1016/0920-5861(94)80151-7
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The interaction of N2O with a Sm2O3 surface and the reaction of methane with surface oxygen species from N2O decomposition were studied applying the temporal-analysis-of-product (TAP) reactor. Formation of C-2 hydrocarbons depended on the concentration of adsorbed oxygen buut the overall reaction was limited by the rate of N2O decomposition which was lower than that of the dissociative adsorption of molecular oxygen under the conditions applied. It might be assumed that the fast transformation of O or O- initially produced by dissociative adsorption of N2O resulted in the formation of adsorbed oxygen species similar to those formed by interaction of gas-phase oxygen with the samaria surface at low temperature (908 K). Different surface processes are suggested to be responsible for the activation of these two oxidants.
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页码：301 / 308
页数：8
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