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Evaluation of strong acid properties of layered HNbMoO6 and catalytic activity for Friedel–Crafts alkylation

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Abstract.
The acid properties and catalytic activity of layered HNbMoO6 for liquid-phase Friedel–Crafts alkylation
are examined. 31P MAS NMR spectroscopy using trimethylphosphine oxide as a probe molecule reveals
that HNbMoO6 possesses strong acid sites in the interlayer region. Layered HNbMoO6 is demonstrated to
display remarkable catalytic performance for this reaction, substantially exceeding the activities of
niobic acid, niobium–molybdenummixed oxide, ion-exchange resins, and zeolites. It is determined that
benzyl alcohol is intercalated into the HNbMoO6 interlayer during alkylation to form a monolayer
configuration, allowing the strong interlayer acid sites to participate in the reaction.

Keywords:
Solid acid
Layered metal oxides
31P MAS NMR
Friedel–Crafts alkylation

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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 142 (2009) 267–271

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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