PREPARATION, CHARACTERIZATION OF ZSM-5 SIEVE WITH MESOSTRUCTURE AND ITS APPLICATION IN CATALYTIC CRACKING

Abstract

Abstract: A new type of mesostructured ZSM-5 sieve (ZSM-new) was prepared by alkali extraction method using CTAB as a framework protective agent and NaOH as alkali source, and tested to investigate its catalytic cracking performance. The new type of mesoporous ZSM-5 molecular sieve was increased significantly in terms of surface area and pore volume and crystallinity. Compared with the original ZSM-5 raw material and the mesostructured ZSM-5 sieve (ZSM-old) prepared by traditional alkali extraction method, the MAT activity of ZSM-new increases by 19 and 13 percentage points, the gasoline yield in the cracking products is up by 18.8 and 12.6 percentage points, and the RON of gasoline increases by 1.9 and 1.4, respectively.

Key words: mesostructure, ZSM-5, alkali extraction, CTAB, zeolite, catalytic cracking

CLC Number:

References

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