NEW FAUJASITE TYPE ZEOLITE, METHOD FOR PRODUCTION THEREOF, AND CATALYST INCLUDING THE FAUJASITE TYPE ZEOLITE USED FOR CATALYTIC CRACKING OF HYDROCARBON

摘要

PROBLEM TO BE SOLVED: To provide a new faujasite type zeolite containing majority hexacoordinated Al other than tetracoordinated Al composing a zeolite skeleton, and to provide a method for production and use thereof.

SOLUTION: The faujasite type zeolite includes silica and alumina, and a molar ratio, SiO2/Al2O3is in the range of 4 to 8. The zeolite is characterized in that the ratio, (P6Al)/(P4Al) of the peak area (P6Al) of spectrum of hexacoordinated Al to that (P4Al) of spectrum of tetracoordinated Al is in the range of 0.4 to 1.0. A lattice constant (ao) is in the range of 24.40-24.65 Å. The zeolite has in the range of 5-100 nm in a pore size, the mesopore whose pore volume is in the range of 0.1-0.4 cc/g.

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