摘要
双稀土氟氧化物SmLaOF具有良好的乙烷氧化脱氢(ODE)催化性能,特别是对于Sm2O3LaF3(1∶1摩尔比),在973K,乙烯选择性为897%,乙烷转化率为221%,是目前报道的具有高乙烯选择性的ODE反应催化剂.比表面积和XRD测试表明,Sm2O3LaF3催化剂体相是由单一相结构的双稀土氟氧化物Sm2/3La1/3OF组成,比表面积较小.原子力显微镜(AFM)研究表明,该催化剂的表面颗粒排布规整致密,粒径均匀;而其它乙烯选择性较低的催化剂颗粒排布较为松散,颗粒大小不一.
Sm La O F series catalysts show good performance for oxidative dehydrogenation of ethane (ODE) reaction. 89 7% of ethene selectivity and 22 1% of ethane conversion were achieved on Sm 2O 3 LaF 3 (1∶1 in mole) at 973 K. Atom force microscope (AFM) images clearly show that for the Sm 2O 3 LaF 3 (1∶1), its particles locate compelled, and their radii are uniform, while for the Sm 2O 3 LaF 3 (1∶3) and Sm 2O 3 LaF 3(3∶1) the particles locate loose and their radii vary greatly.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
1998年第6期605-607,共3页
基金
国家自然科学基金
关键词
钐
镧
乙烷
氧化脱氢
氟氧化物
乙烯
催化剂
AFM
Samarium oxide, Lanthanum fluoride, Ethane, Oxidative dehydrogention, Atom force microscope