发明授权
- 专利标题： Small crystal ZSM-5, its synthesis and use
- 专利标题（中）： 小晶体ZSM-5，其合成和使用
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申请号： US09218191申请日： 1998-12-22
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公开(公告)号： US06180550B2公开(公告)日： 2001-01-30
- 发明人: Jeffrey S. Beck , Carrie L. Kennedy , Wieslaw J. Roth , David L. Stern
- 申请人： Jeffrey S. Beck , Carrie L. Kennedy , Wieslaw J. Roth , David L. Stern
- 主分类号： B01J2900
- IPC分类号： B01J2900
摘要：
A synthetic porous crystalline material has the structure of ZSM-5 and a composition involving the molar relationship: X2O3:(n)YO2, wherein X is a trivalent element; Y is a tetravalent element; and n is less than 25, and wherein the slope of the nitrogen sorption isotherm of the material at a partial pressure of nitrogen of 0.4 to 0.7 and a temperature 77° K is greater than 30. The material has a mesoporous surface area (MSA) greater than 45 m2/g and is useful as a catalyst in the liquid phase isomerization of xylene.
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