Ultrasound-assisted dealumination of zeolite Y / create by M. Hosseini, M.A. Zanjanchi, B. Ghalami-Choobar and H. Golmojdeh

By:

Hosseini M [author]

Contributor(s):

Material type: Text

TextSeries: Journal of chemical sciences ; Volume127, number 1,Bangalore : Springer, 2015Content type:

text

Media type:

unmediated

Carrier type:

volume

ISSN:

09743626

Subject(s):

Microporous -- Zeolite Y dealumination -- Dealumination

LOC classification:

QD31 JOU

Online resources:

Click here to access online

Abstract: We demonstrate a new procedure for dealumination of zeolite Y. The method employs a 28 KHz ultrasound bath and an ethanolic acetylacetone solution. Acetylacetone was used as chelating agent and ultrasound irradiation was used as extraction intensifier. Four types of samples, as-synthesized, ammonium-exchanged, acidic and neutralized zeolite were used for dealumination. Parts of the framework aluminum atoms are removed from their sites in the structure of zeolite Y upon the use of either acetylacetone on its own or simultaneous use of acetylacetone and ultrasound waves. Higher dealumination was observed for those samples subjected to both ultrasound irradiation and acetylacetone extraction.

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Item type	Current library	Call number	Vol info	Status	Notes	Date due	Barcode
Journal Article	Main Library - Special Collections	QD31 JOU (Browse shelf(Opens below))	Vol. 127, no.1 (pages 25-31)	Not for loan	For in house use only

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We demonstrate a new procedure for dealumination of zeolite Y. The method employs a 28 KHz ultrasound bath and an ethanolic acetylacetone solution. Acetylacetone was used as chelating agent and ultrasound irradiation was used as extraction intensifier. Four types of samples, as-synthesized, ammonium-exchanged, acidic and neutralized zeolite were used for dealumination. Parts of the framework aluminum atoms are removed from their sites in the structure of zeolite Y upon the use of either acetylacetone on its own or simultaneous use of acetylacetone and ultrasound waves. Higher dealumination was observed for those samples subjected to both ultrasound irradiation and acetylacetone extraction.

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