Study on the SiO₂/Al₂O₃ Ratio of Starting NaY Zeolites on USY Zeolites Properties and Hydroaromatization Catalyst Performance

Fucun Wang^1, , Zhongyang Zhang², Baodong Jin², Baojing Cui², Baojun Jia², Famin Sun¹, Tiezhen Zhang¹ and Jinling Zhu¹

¹Daqing Petrochemical Research Center of PetroChina, Daqing, Heilongjiang, 163714, China

²PetroChina Fushun Petrochemical Company, Fushun Liaoning 113001, China

Cite this paper:
Fucun Wang, Zhongyang Zhang, Baodong Jin, Baojing Cui, Baojun Jia, Famin Sun, Tiezhen Zhang and Jinling Zhu. Study on the SiO₂/Al₂O₃ Ratio of Starting NaY Zeolites on USY Zeolites Properties and Hydroaromatization Catalyst Performance. Journal of Materials Physics and Chemistry. 2022; 10(1):17-22. doi: 10.12691/jmpc-10-1-3

Abstract

The modifications of NaY zeolites with different SiO₂/Al₂O₃ ratio were carried out, the results revealed that modified USY zeolites showed some mesopores, as the SiO₂/Al₂O₃ ratio of USY increased, the weak acidity strength of USY had little change, medium and strong acidity strength of USY decreased, the weak acidity and medium-strong concentration decreased.The selective ring opening evaluation of tetralin revealed that hydro-upgrading catalyst with different USY zeolites had different tetralin conversion, different yield and selectivity of ROP. The catalyst prepared with USY zeolite modified from NaY with the SiO₂/Al₂O₃ ratio of 5.7 showed best hydro-upgrading performance, which had higher tetralin conversion, higher yield and selectivity of ROP. Acidity and Si/Al ratio of USY zeolites both were important factors affecting catalyst performance.

Keywords:
NaY type zeolite SiO₂/Al₂O₃ ratio USY zeolite catalyst performance

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