文献类型：期刊文献

英文题名：Investigated on Sulfur-transfer Catalyst (1) Composition, Structure and De-SOx Activity of Magnesium-alumina Spinel

作者：Wang Jinan[1];Li Chenglie[1];Dai Yiyun[1];Gao Xiuping[1]

机构：[1]E China Univ Sci & Technol, Petr Proc Res Ctr, Shanghai 200237, Peoples R China

年份：1994

卷号：10

期号：7

起止页码：581

外文期刊名：ACTA PHYSICO-CHIMICA SINICA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000207589400002)】；

语种：英文

外文关键词：Sulfur-transfer catalyst; Magnesium-alumina spinel; FCC

摘要：Mixed solid solutions magnesium-alumina spinel catalyst, MgAl2O4 center dot xAl(2)O(3) center dot yMgO (0< x <9, 0< y <5), using to reduce the SOx emission from the fluid catalytic cracking units (FCCU)(1) were prepared by coprecipitation method, It was found that a "volcano" type curve relation between the lattice parameter (a) and the composition of the spinel existed. The activity decreases as the value of x in the alumina excess spinal increases from 1 to 9, and increases as the value of y increases in the magnesium-rich spinet until up to 1, if y >1, the activity decreases which was due to MgO and spinet coexist in the. catalyst. The results of reduction-oxidation (red-ox) cycle tests showed that introducing rare earth cerium to spinel could improve the de-SOx activity. Of all the catalysts, 0.1Ce/MgAl2O4 center dot MgO is a promising catalyst which has the highest activity. 30% propane as reducing gas is superior to 30% H-2.