Structural features of binary microporous zeolite composite Y-Beta and its hydrocracking performance
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- 作者：Xiwen Zhang ; Qun Guo ; Bo Qin ; Zhizhi Zhang ; Fengxiang Ling ; Wanfu Sun ; Ruifeng Li
- 关键词：Zeolite composite ; Structural feature ; Acid catalyst ; Hydrocracking
- 刊名：Catalysis Today
- 出版年：2010
- 出版时间：15 January 2010
- 年：2010
- 卷：149
- 期：1-2
- 页码：212-217
- 全文大小：1224 K
文摘
Y-Beta zeolite composites denoted as HS-FBZ (High-Silica-Faujasite-Beta-Zeolite) were synthesized hydrothermally using high silica Y as precursor and characterized by XRD, N2 adsorption, SEM, HRTEM, NH3-TPD and FT-IR spectra of pyridine. The results reveal that the different ratios of Y and Beta zeolites in the composites induced the change of surface areas, pore diameters and acid properties of HS-FBZ, and the extended Beta layers on the zeolite Y surface were observed. The composite exhibited an excellent hydrocracking activity for heavy oil. Compared with the corresponding physical mixture of Y and Beta zeolites, the zeolite composite as a hydrocracking catalyst for vacuum gas oil increased the heavy naphtha yield by 5.61 wt % and the jet fuel yield by 11.52 wt % .