Catalytic cracking performance of alkaline-treated zeolite Beta in the terms of acid sites properties and their accessibility

doi:10.1016/j.jcat.2014.01.009

Catalytic cracking performance of alkaline-treated zeolite Beta in the terms of acid sites properties and their accessibility

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Catalytic cracking performance of alkaline-treated zeolite Beta in the terms of acid sites properties and their accessibility

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punktacja MEiN [2014 A]: 40

title:	Catalytic cracking performance of alkaline-treated zeolite Beta in the terms of acid sites properties and their accessibility
author:	Tarach Karolina , Góra-Marek Kinga , Tekla Justyna , Brylewska Kamila, Datka Jerzy , Mlekodaj Kinga , Makowski Wacław , Igualada López M.C., Martínez Triguero Joaquín, Rey Fernando
journal title:	Journal of Catalysis
volume:	312
date of publication :	2014
pages:	46-57
ISSN:	0021-9517
eISSN:	1090-2694
DOI:	10.1016/j.jcat.2014.01.009
language:	English
journal language:	English
abstract in English:	The zeolite Beta is considered as a promising additive for FCC catalyst in diesel oil production. In this article, it is shown that hierarchical zeolite Beta obtained by an optimized desilication procedure increases diesel and propylene yields during gas-oil cracking reaction. The alkaline treatment of zeolite Beta (Si/Al = 22) by desilication with NaOH and NaOH&TBAOH was investigated. The catalytic performance improvement of desilicated zeolite Beta has been rationalized by deep characterization of the samples including X-ray diffraction, low-temperature adsorption of nitrogen, solid-state 29Si MAS NMR and IR studies of acidity. Finally, the catalytic performance of the zeolites Beta was evaluated in the cracking of n-decane, 1,3,5-tri-iso- propylbenzene, and vacuum gas oil. It was found that desilication with NaOH&TBAOH ensures the more uniform intracrystalline mesoporosity with the formation of narrower mesopores, while preserving full crystallinity resulting in catalysts with the most appropriated acidity and then with better catalytic performance.
keywords in English:	hierarchical zeolites, Beta, desilication, acidity, TIPB, n-Decane, cracking, FCC
affiliation:	Wydział Chemii : Zakład Chemii Nieorganicznej, Wydział Chemii : Pracownia Spektrometrii w Podczerwieni
type:	journal article
subtype:	academic paper

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