A Kinetic Study of Oxidative Dehydrogenation of Isobutane to Isobutylene over Chromium Oxide Supported on Lanthanum Carbonate

被引：3
|
作者：
Hoang, M. [1 ]
Mathews, J. F. [2 ]
Pratt, K. C. [3 ]
Xie, Z. [1 ]
机构：
[1] CSIRO Mat Sci & Engn, Clayton, Australia
[2] Monash Univ, Dept Chem Engn, Clayton, Vic 3168, Australia
[3] Swinburne Univ Technol, Hawthorn, Vic 3122, Australia
来源：
KINETICS AND CATALYSIS | 2010年 / 51卷 / 03期
关键词：
SELECTIVE OXIDATION; NICKEL MOLYBDATES; SURFACE-CHEMISTRY; N-BUTANE; CATALYSTS; PROPANE; SILICA; TRANSITION; MECHANISM;
D O I：
10.1134/S0023158410030122
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：
Kinetics of oxidative dehydrogenation of isobutane to isobutylene over chromium oxide supported on lanthanum carbonate was studied. The formation rate of isobutylene was found to be first order in isobutane and zero order in oxygen concentration and the rate limiting step was the regeneration of active sites by the gas phase oxygen. The formation of CO(2) was due to the consecutive oxidation of isobutylene which occurred on the same active sites used for isobutylene formation, not by the parallel oxidation of isobutane.
引用
收藏
页码：398 / 403
页数：6
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