STUDY ON OXIDATIVE COUPLING OF METHANE I.EFFECT OF ADDITIVES ON TiO2 PHASE TRANSITION AND CATALYTIC PERFORMANCE

被引：0

作者：

GONG Mao-Chu XU Zheng-Hong ZHANG Wei-Dong CHEN Yao-Qiang ZHOU Jian-Lue CHEN YuDepartment of Chemistry and Analytical & Testing Center Sichuan University Chengdu

机构：

来源：

Journal of Natural Gas Chemistry | 1994年 / 04期

关键词：

TiO; IO; La; Li; STUDY ON OXIDATIVE COUPLING OF METHANE I.EFFECT OF ADDITIVES ON TiO2 PHASE TRANSITION AND CATALYTIC PERFORMANCE; TGA; OCM; XRD;

D O I：

暂无

中图分类号：

O621.25 [];

学科分类号：

070303 ; 081704 ;

摘要：

The effect of Li.La.Mn and W added to TiOon catalyticperformance for the oxidation coupling of methane （OCM）and on TiOphasetransition was discussed.X-ray diffraction（XRD）analysis and differentialthermal analysis-thermogravimentric analysis （DTA TGA） were used to studythe relation between TiOphase transition and OCM reaction performance.Theresults showed that Li-La-Mi-W/TiOsystem exhibited high activity andChydrocarbon selectivity.Anatase TiO（A）and rutile TiO（R）exhibiteddifferent OCM activity and selectivity.TiO（A）is favorable for the activationof methane.TiO（R）is favorable to the formation of Chydrocarbons.Lipromutes the transformation from TiO（A） to TiO（R）and enhancesCselectivity.La has nothing to do with TiOphase shift.it raises mtehaneconversion,resulting in deep oxidation.Li and La simultaneously added toTiOexhibit a cooperation.

引用

页码：408 / 416

页数：9