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公开(公告)号:US20050277796A1
公开(公告)日:2005-12-15
申请号:US11137292
申请日:2005-05-25
申请人: Paula Bogdan , John Bauer , E. Leon-Escamilla , Gregory Maher , Robert Larson
发明人: Paula Bogdan , John Bauer , E. Leon-Escamilla , Gregory Maher , Robert Larson
CPC分类号: C07C5/2708 , B01J29/7469 , B01J37/0009 , B01J37/20 , B01J2229/20 , B01J2229/42 , C07C5/2775 , C07C2521/04 , C07C2521/08 , C07C2523/40 , C07C2523/42 , C07C2529/70 , Y02P20/52 , C07C15/08
摘要: A process for isomerizing ethylbenzene into xylenes such as para-xylene using a zeolitic catalyst system based on low Si/Al2 MTW-type zeolite that preferably is substantially free of mordenite. The catalyst may be bimetallic where the two metals are platinum and tin.
摘要翻译: 使用优选基本上不含丝光沸石的低Si / Al 2 MTW型沸石的沸石催化剂体系将乙苯异构化为二甲苯如对二甲苯的方法。 催化剂可以是双金属的,其中两种金属是铂和锡。
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公开(公告)号:US20050143614A1
公开(公告)日:2005-06-30
申请号:US10749156
申请日:2003-12-30
申请人: E. Leon-Escamilla , Paula Bogdan , John Bauer , Gregory Maher
发明人: E. Leon-Escamilla , Paula Bogdan , John Bauer , Gregory Maher
CPC分类号: B01J29/7469 , B01J2229/20 , B01J2229/42 , C07C5/2708 , C07C2521/04 , C07C2521/08 , C07C2523/40 , C07C2523/42 , C07C2529/70 , Y02P20/52 , C07C15/08
摘要: A process for isomerizing ethylbenzene into paraxylene using a zeolitic catalyst system based on MTW-type zeolite that is substantially free of mordenite. The invention obtains an improved yield of paraxylene without excess benzene production by dealkylation. The zeolitic silica-to-alumina ratio ranges from 20 to 45. Elimination of mordenite in the catalyst improves yields and integrated aromatics complex economics by reducing undesirable aromatic ring-loss reactions as well.
摘要翻译: 使用基本上不含丝光沸石的MTW型沸石的沸石催化剂体系将乙苯异构化成对二甲苯的方法。 本发明通过脱烷基化获得了不含过量苯生成的对二甲苯的提高的产率。 沸石二氧化硅与氧化铝的比例范围为20至45.在催化剂中消除丝光沸石也通过减少不期望的芳族环损失反应来提高产率和综合芳烃复合物经济性。
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