甲烷选择氧化催化剂中铈的作用  

Action of Cerium in Catalysts at Oxidation of Methane

作　　者：嵇玉书 魏洤 崔湘浩[1] Ji Yushu;Wei Quan;Cui Xianghao(Department of Chemistry,Jilin University,Changchun)

机构地区：[1]吉林大学化学系

出　　处：《高等学校化学学报》1987年第11期1009-1011,共3页Chemical Journal of Chinese Universities

摘　　要：用X-光电子能谱、X-光衍射、表面光电压和程序升温脱附方法,对甲烷选择氧化催化剂锡、锆和锡、锆、铈进行了表征,发现铈对催化剂酸性、氧和甲烷的吸附均有影响。并提高了催化活性。Sn-Zr and Sn-Zr-Ce catalysts were selected as formaldehyde formation catalysts and characterized by x-ray diffraction,SPV,X-ray photoelectron spectroscopy and temperatureprogrammed desorption of O_(8) and n-butylamine.The activity yielding formaldehyde depends on cerium and its content.It is found that the addition of cerium lower the bonding energy of Sn,Zr and has influence on acidity of catalysts as well as adsorption of O_(2),CH_(4) The result obtained from x-ray diffraction shows that cerium exerts action on Sn and Zr.

关 键 词：催化剂酸性 催化活性 程序升温脱附 表面光电压 铈 甲烷选择氧化 X-光电子能谱 锡 

分 类 号：O64[理学—物理化学]