Investigation of Preparation and Catalytic Cracking Property of LaHZSM-5 Zeolite

Chem. J. Chinese Universities ›› 1993, Vol. 14 ›› Issue (4): 545.

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Investigation of Preparation and Catalytic Cracking Property of LaHZSM-5 Zeolite

LI Rong-Sheng¹, WEN Rui-Wu¹, ZHANG Wu-Yang¹, WEI Quan²

1. Derartment of Chemistry, Jilin University, Changchun, 130023;
2. Analysing and Testing Center, Jilin University, Changchun

Received:1992-05-17 Revised:1992-07-18 Online:1993-04-24 Published:1993-04-24

Abstract

Abstract: In this paper LaHZSM-5 zeolites with varying exchange degree were prepared by the conventional and the hydrothermal liquid-solid exchange.The prepared LaHZSM-5 zeolites were characterized by XPSand IRspectroscopy, X-ray diffraction as well as the cracking of pentadecane.The results show that the LaHZSM-5 zeolite samples with higher exchange degree can be prepared by the hydrothermal exchange.LaHZSM-5 zeolite has a higher cracking activity than HZSM-5 zeolite.After the incorporation of La by exchange, the selectivity for gas is decreased and the selectivity for C_5-10 is increased.In addition, the hydrothermal stability of the activity of ZSM-5 zeolite is also enhanced owing to the incorporation of La ion by exchange.

Key words: ZSM-5 zeolite, La³⁺ exchange, Cracking, Rare earth

TrendMD:

LI Rong-Sheng, WEN Rui-Wu, ZHANG Wu-Yang, WEI Quan. Investigation of Preparation and Catalytic Cracking Property of LaHZSM-5 Zeolite[J]. Chem. J. Chinese Universities, 1993, 14(4): 545.

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Investigation of Preparation and Catalytic Cracking Property of LaHZSM-5 Zeolite

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