公开(公告)号：EP1140740A1

公开(公告)日：2001-10-10

申请号：EP99965748.9

申请日：1999-11-04

申请人： Mobil Oil Corporation

发明人： BECK, Jeffrey, Scott ,  KENNEDY, Carrie, L. ,  ROTH, Wieslaw, Jerzy ,  STERN, David, Lawrence

IPC分类号： C07C5/22 ,  B01J29/40

CPC分类号： C01B39/38 ,  B01J29/04 ,  B01J29/40 ,  C01B39/40 ,  C07C5/2702 ,  C07C6/123 ,  C07C2529/40 ,  C07C15/067

摘要： A synthetic porous cystalline 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.