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Selective hydrogenation of trans-4-phenyl-3-butene-2-one to unsaturated alcohol over Ru/y-Al2O3 modified by PPh3 and diamines

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Abstract
The selective hydrogenation of trans-4-phenyl-3-butene-2-one over Ru/g-Al2O3 stabilized with triphenylphosphine was investigated in the presence of diamine and base. It was found that 1,2-diphenylethylene-1,2-diamine (DPEN) was the best modifier among the investigated diamines. Both DPEN and KOH not only promoted the selectivity of the C O bond hydrogenation, but also accelerated the rate of the hydrogenation. Under the optimum conditions: the reaction temperature of 35 8C, H2 pressure of 4.0 MPa, KOH concentration of 0.04 mol/l, and reaction time of 3 h, the conversion of trans-4-phenyl-3-butene-2-one was close to 100% and the selectivity to unsaturated alcohol was more than 99%. In combining with the effect of reaction factors on the hydrogenation, a possible hydrogenation mechanism is proposed.

Keywords: Ruthenium; Diamine; Selective hydrogenation; Trans-4-phenyl-3-butene-2-one

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Informasi Detail

Judul Seri

Applied Catalysis A: General

No. Panggil

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Penerbit

London : Elsevier B.V.., 2008

Deskripsi Fisik

Applied Catalysis A: General 339 (2008) 93–98

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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