A process for cracking or decomposing a feedstream containing a major proportion of at least dialkyl ether to produce the corresponding olefins comprises contacting the feedstream with a faujasite aluminosilicate catalyst, wherein at least about 50 wt.% of the alkali metal content orginally present in said faujasite has been exchanged by at least one alkaline earth metal, characterized in that prior to the contacting the catalyst is pretreated with steam which enhances its selectivity and reduces the undesirable by-product yields.
申请公布号
EP0735996(A1)
申请公布日期
1996.10.09
申请号
EP19940931931
申请日期
1994.10.19
申请人
EXXON CHEMICAL PATENTS INC.
发明人
COX, GRAEME, IAN;PETE, DERRICK, DUMONT;ROSENFELD, DANIEL, DAVID