Properties and Catalytic Performance for Methane Combustion of LaMnO3 Perovskite Prepared in Oil–Water Two-phase System
Properties and Catalytic Performance for Methane Combustion of LaMnO3 Perovskite Prepared in Oil–Water Two-phase System
复制标题
DOI：
10.1007/s10562-008-9582-6
复制
发表时间：
2008-07
影响因子：
2.8
通讯作者：
Guojun Zou;Longxin Chen;Xiaolai Wang
中科院分区：
文献类型：
--
作者：
Guojun Zou;Longxin Chen;Xiaolai Wang
在油水两相体系中制备了具有较高甲烷燃烧催化活性的lamno3催化剂。以油酸为相转移剂，氨为共沉淀剂，进行了该工艺。同时，采用h2o2控制Mn离子在沉淀时的价态。控制得到的钙钛矿相相似，具有3种O2-TPD模式，催化剂具有不同的催化活性。采用BET、TG-DSC、XRD和O2-TPD技术对催化剂的结构和性能进行了表征。
LaMnO3catalysts with high catalytic activity for methane combustion have been prepared in an oil–water two-phase system. The procedure was carried out using oleic acid as phase-transfer agent, and ammonia as co-precipitation agent. In the meanwhile, H2O2is employed to control the valence of Mn ions when precipitation. The control results in perovskites with similar phases having three O2-TPD patterns, and induces the catalysts possessing distinct catalytic activities. The structure and properties of the catalysts were characterized by BET, TG-DSC, XRD and O2-TPD techniques.