Catalytic conversion over modified synthetic mesoporous crystalline material

A process for catalytic conversion of an organic compound-containing feedstock to conversion product which comprises contacting said feedstock under catalytic conversion conditions with a catalyst comprising a modified inorganic, porous, non-layered crystalline phase material exhibiting, after calcination and/or functionalization, an X-ray diffraction pattern with at least one peak at a d-spacing greater than about 18 Angstrom Units with a relative intensity of 100 and having a benzene adsorption capacity of greater than 15 grams per 100 grams anhydrous crystal at 50 torr and 25.degree. C., said crystalline material having been modified by the method comprising

• contacting with a treatment composition comprising M'X'Y'.sub.n wherein
• M' is selected from a group consisting of Periodic Table Groups IIA, IIIA, IVA, VA, VIA, VIIIA, IB, IIB, IIIB, IVB, VB and VIB;
• X' is selected from a group consisting of halides, hydrides, alkoxides of 1 to about 6 carbon atoms, alkyl of C.sub.1-18, alkenyl of C.sub.1-18, aryl of C.sub.1-18, aryloxide of C.sub.1-18, sulfonates, nitrates, and acetates;
• Y' is selected from a group consisting of X', amines, phosphines, sulfides, carbonyls and cyanos;
• and
• n=1-5;
• said treatment composition contacting occurring under sufficient conditions so that the crystalline phase material is functionalized.