Synthesis of Zeolite β from Kaolin and Its Catalytic Performance For FCC Naphtha Aromatization

Autor:	Chunming Xu, Zhou Yi, Jinsen Gao, Ping Wang, Baojian Shen, Wei Zhang, Tong Xuefang, Yuan Liu, Qiaoxia Guo
Rok vydání:	2008
Předmět:	Chemistry General Chemical Engineering Aromatization Energy Engineering and Power Technology Mineralogy Molecular sieve Fluid catalytic cracking Catalysis Fuel Technology Hydrothermal synthesis Zeolite Naphtha Nuclear chemistry BET theory
Zdroj:	Energy & Fuels. 23:60-64
ISSN:	1520-5029 0887-0624
DOI:	10.1021/ef800681e
Popis:	A hydrothermal synthesis method for β zeolite preparation using kaolin as the sole alumina source was investigated. This approach provided a choice to manufacture zeolite β with a low cost alumina source. The zeolite β samples were characterized by XRD, IR, SEM, XRF, DSC, and BET surface area measurements. Tunable crystallinity, higher meso- or macroporosity, higher thermal stability, and more Bronsted type acid sites of zeolite β can be obtained by properly controlling the synthesis conditions using this system. The catalytic evaluation results indicated that zinc-loaded zeolite β is a good potential FCC naphtha aromatization catalyst. The kaolin derived, 2 wt% zinc-loaded Zn-β(2) showed higher aromatic yields and better product distribution compared with that of the reference Zn-β catalyst; it also provided an aromatics yield of 42.26 wt%, which increased by 22.62 wt% compared with the feedstock.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c899622efe4f841ae07a32f2c0cd545f https://doi.org/10.1021/ef800681e Zobrazit plný text záznamu