摘要
采用溶胶-凝胶法合成法制备了尖晶石型复合氧化物L iMn2O4,并以其为载体,采用沉积-沉淀法制备了Au/L iMn2O4催化剂,以CO催化氧化为探针反应测试了催化剂的活性,对催化剂进行了XRD和H2-TPR表征。结果表明,750℃焙烧后的载体中的主要物相是尖晶石L iMn2O4。活性测试结果显示,载体L iMn2O4对CO催化氧化反应的活性很低,但随金的引入,催化剂活性大大增强,这和金在载体表面的高分散以及促进了载体的还原有关。
Spinel LiMn2O4 was prepared by sol - gel method and Au/ LiMn2O4 catalyst was prepared by deposition - precipitation method. The catalytic performance for CO low - temperature oxidation was chosen as a probe reaction to test the catalytic activity. The characters of powder are characterized by XRD and H2 - TPR means. The XRD results demonstrated that the spinel structure was formed at the calcination temperature of 750℃. With the introduction of gold species, the catalyst activity was improved greatly, which might be related to the effect between the active species of gold with the support.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
北大核心
2011年第1期267-269,共3页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
内蒙古教育厅项目(NJZY07049)
