摘要
The active oxygen species on the surface of additive/rare earth oxides (RE2O3)catalysts have been investigated by means of XPS, O2-TPD and XRD. The results indicate that there exist O and O2- species on the surface of the catalysts at low temperature. The performance of the catalyst is dependent on the concentration of O species on the catalyst surface. It is suggested that the O- species formed from O species at high temperature is active oxygen species for OCM reaction.
The active oxygen species on the surface of additive/rare earth oxides (RE2O3)catalysts have been investigated by means of XPS, O2-TPD and XRD. The results indicate that there exist O and O2- species on the surface of the catalysts at low temperature. The performance of the catalyst is dependent on the concentration of O species on the catalyst surface. It is suggested that the O- species formed from O species at high temperature is active oxygen species for OCM reaction.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1997年第8期1372-1374,共3页
Chemical Journal of Chinese Universities
基金
国家"八五"重点科技攻关项目
关键词
甲烷
氧化偶联反应
活性氧种
OCM
稀土催化剂
Methane oxidative coupling, Rare earth oxide catalyst, Active oxygen species
