发明授权
US06191331B1 Zeolite catalyst precoking method for selective aromatics disproportionation process
失效
用于选择性芳烃歧化过程的沸石催化剂预处理方法
- 专利标题： Zeolite catalyst precoking method for selective aromatics disproportionation process
- 专利标题（中）： 用于选择性芳烃歧化过程的沸石催化剂预处理方法
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申请号： US09347805申请日： 1999-07-02
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公开(公告)号： US06191331B1公开(公告)日： 2001-02-20
- 发明人: Edwin P. Boldingh
- 申请人： Edwin P. Boldingh
- 主分类号： C07C522
- IPC分类号： C07C522
摘要：
An improved process is disclosed for the selective disproportionation of toluene. The process uses a zeolitic catalyst which is selectively precoked prior to toluene disproportionation in a manner to avoid a large temperature rise across a bed of the catalyst during precoking. The catalyst and process provide enhanced selectivity for the production of paraxylene.
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