Influence of preparative conditions on the structure, acidity and catalytic activity of dealuminated Y zeolite

Kumari, V Durga; Prasad, B Prabhu; Rao, V Venkat

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Please use this identifier to cite or link to this item: http://nopr.niscpr.res.in/handle/123456789/30999

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DC Field	Value	Language
dc.contributor.author	Kumari, V Durga	-
dc.contributor.author	Prasad, B Prabhu	-
dc.contributor.author	Rao, V Venkat	-
dc.date.accessioned	2015-03-20T06:15:41Z	-
dc.date.available	2015-03-20T06:15:41Z	-
dc.date.issued	1996-03	-
dc.identifier.issn	0975-0991 (Online); 0971-457X (Print)	-
dc.identifier.uri	http://hdl.handle.net/123456789/30999	-
dc.description	95-100	en_US
dc.description.abstract	Deammoniation ofNH₄Y (NH₄Y → HY + NH₃) followed by partial dehydroxylation of HY removed part of the aluminium from zeolitic framework and most of this non-framework aluminium is conveniently extracted with ethanolic solutions of acetylacetone. A seriesof dealuminated Y zeolite is prepared by this method varying the Si/Al ratio. These dealuminated Y zeolites are characterized by chemical analysis, XRD, BET surface area, acidity, IR, TPD of ammonia and catalytic activity in acid catalyzed reactions like cumene cracking , aniline alkylation, phenol alkylation and cyclohexanol dehydration. Shift of 1010cm^-1 frequency in IR spectra to 1068cm^-1 and decrease in unit cell parameter a_o from 24.74(Na Y) to 24.32 (DHY₂₄) (A) have demonstrated N_AI /U.C.≃ 12 ,a state of advanced dealumination. TPD of ammonia and catalytic activity over these dealuminated Y zeolites clearly show the presence of weak-moderate-strong acidity.	en_US
dc.language.iso	en_US	en_US
dc.publisher	NISCAIR-CSIR, India	en_US
dc.rights	CC Attribution-Noncommercial-No Derivative Works 2.5 India	en_US
dc.source	IJCT Vol.03(2) [March 1996]	en_US
dc.title	Influence of preparative conditions on the structure, acidity and catalytic activity of dealuminated Y zeolite	en_US
dc.type	Article	en_US
Appears in Collections:	IJCT Vol.03(2) [March 1996]

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