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Effect of acid treatments on physico-chemical properties and isomerization activity of mordenite

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Abstract.
A series ofmordenite-based catalysts of varying acidity and metal concentrations were prepared and the
effect of physico-chemical properties of these catalysts on the n-hexane isomerization activity was
studied. Acid treatment with nitric acid greatly influenced the nature and amount of aluminum in the
zeolite characterized by 29Si and 27Al NMR. The microcalorimerty studies of ammonia adsorption clearly
indicated the changes in density and strength of acid sites of mordenite upon acid treatment. At optimum
conditions of acid treatment the catalyst exhibited improved properties such as acidity and the catalyst
gave enthusiastic results claiming 98% selectivity to isomers in n-hexane hydroisomerization reaction.
The catalyst and the reaction parameters for activity of Pt/H-mordenite have been discussed in the
present paper.

Keywords:
Mordenite
Hydroisomerization
Acid leaching
Acid sites

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Informasi Detail

Judul Seri

Catalysis Today

No. Panggil

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Penerbit

London : Elsevier B.V.., 2009

Deskripsi Fisik

Catalysis Today 141 (2009) 215–219

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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