发明申请
- 专利标题: Methods Addressing Aging In Flocculated Molecular Sieve Catalysts For Hydrocarbon Conversion Processes
- 专利标题(中): 用于烃转化过程的絮凝分子筛催化剂中的老化方法
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申请号: US12021918申请日: 2008-01-29
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公开(公告)号: US20090192276A1公开(公告)日: 2009-07-30
- 发明人: Yun-Feng Chang , Luc R.M. Martens , Machteld Maria Mertens , Stephen N. Vaughn
- 申请人: Yun-Feng Chang , Luc R.M. Martens , Machteld Maria Mertens , Stephen N. Vaughn
- 主分类号: C08F4/16
- IPC分类号: C08F4/16 ; C08F4/12 ; C07C5/333 ; B01J27/182
摘要:
One aspect of the invention relates to a method for formulating a molecular sieve catalyst composition, the method comprising the steps of: (a) providing a synthesized molecular sieve having been recovered in the presence of a flocculant; (b) thermally treating the synthesized molecular sieve at a temperature from about 50° C. to about 250° C. and under other conditions sufficient to form a thermally treated synthesized molecular sieve having a first LOI less than 26% and a first micropore surface area; (c) aging the thermally treated synthesized molecular sieve for at least one year; (d) analyzing the aged, thermally treated molecular sieve to determine a second micropore surface area, wherein the second micropore surface area is 3% or less lower than the first micropore surface area; and (e) combining the aged, thermally treated synthesized molecular sieve, a binder, and optionally a matrix material to produce an aged, formulated molecular sieve catalyst composition.