期刊
CATALYSIS TODAY
卷 149, 期 1-2, 页码 212-217出版社
ELSEVIER
DOI: 10.1016/j.cattod.2009.11.005
关键词
Zeolite composite; Structural feature; Acid catalyst; Hydrocracking
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. N-2 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%. (C) 2009 Elsevier B.V. All rights reserved.
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