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Preparation of Cu/SBA-15 catalysts by different methods for the hydrogenolysis of dimethyl maleate to 1,4-butanediol

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Abstract.
Mesoporous siliceous SBA-15-supported Cu catalysts have been prepared by different methods and
systematically characterized. The results revealed that the incipient wetness impregnation (IWI)method
gives poor dispersion of copper species, whereas much better dispersion is found in catalysts prepared by
the deposition precipitation (DP), grafting, and homogeneous deposition precipitation (HDP) methods.
The Cu/SBA-15 catalyst prepared by the grafting method is rich in Cu+, while a partial destruction of the
hexagonal mesostructure of SBA-15 occurs in the catalyst prepared by the HDP method. In gas phase
hydrogenolysis of dimethylmaleate (DMM) to 1,4-butanediol (BDO), the hydrogenolysis activities of the
catalysts follow the sequence of the metallic Cu surface areas; the catalyst prepared by the HDP method
exhibits the highest activity and selectivity. Irrespective of the much smaller metallic Cu surface area of
the catalyst prepared by the grafting method, this catalyst exhibits only slightly lower activity than that
prepared by the DP method, suggesting that Cu+ also participates in DMM hydrogenolysis. The reaction
conditions are further investigated over the Cu/SBA-15 catalyst prepared by the HDP method, aiming to
obtain a high yield of BDO.

Keywords: Cu/SBA-15, Preparation method, DMM, BDO, Hydrogenolysis.

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Informasi Detail

Judul Seri

Applied Catalysis A: General

No. Panggil

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Penerbit

London : Elsevier B.V.., 2009

Deskripsi Fisik

Applied Catalysis A: General 356 (2009) 129–136

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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