摘要
柠檬酸络合法制备钙钛矿LaMO3（M=Co,Mn,Fe）.对于己烷的完全氧化反应和甲烷完全氧化反应过程的活性进行测试,催化剂的催化活性顺序如下：LaCoO3〉LaMnO3〉LaFeO3,得出了相同的规律性：在氧化过程中,温度在250℃～300℃左右存在游离态的氧;温度高于300℃时,游离态的氧消失.
LaMO3 （M = Co, Mn, Fe, ） perovskites were prepared by calcining the citrate precursors at 800℃ for 8 h. The catalytic behavior was examined in the hexane and methane total oxidation. The foUowing activity scale was found： LaCoO3 〉 LaMnO3 〉 LaFeO3. At tempretrue around 250℃-300℃, mobile surface oxygen species are involved in the oxidation process, whereas at T 〉300 oxygen mobile species are no more present.
出处
《内蒙古民族大学学报（自然科学版）》
2006年第3期272-274,共3页
Journal of Inner Mongolia Minzu University：Natural Sciences
