MCM-22 TYPE ZEOLITE HAVING NOVEL CRYSTAL STRUCTURE AND AROMATIC HYDROCARBON REFINING CATALYST CONTAINING THE ZEOLITE

摘要

PROBLEM TO BE SOLVED: To provide a novel MCM-22 type zeolite having remarkably elongated catalyst life as a hydrocarbon-based refining catalyst.SOLUTION: The MCM-22 type zeolite has a ratio between a peak intensity of a (101) face Pand the peak intensity of a (102) face Pmeasured by XRD (P/P) in a range of 0.10 to 0.60 and a peak intensity ratio Iq4 of tetracoordination Al measured at 59.5±2.0 ppm byAl-solid NMR is in the range of 0.14 to 0.70.