Effect of solvent on the hydrogenation of 4-phenyl-2-butanone over Pt based catalysts

被引：50

作者：

McManus, I. ^{[1
]}

Daly, H. ^{[1
]}

Thompson, J. M. ^{[1
]}

Connor, E. ^{[1
]}

Hardacre, C. ^{[1
]}

Wilkinson, S. K. ^{[2
,3
]}

Bonab, N. Sedaie ^{[2
]}

ten Dam, J. ^{[3
]}

Simmons, M. J. H. ^{[2
]}

Stitt, E. H. ^{[3
]}

D'Agostino, C. ^{[4
]}

McGregor, J. ^{[4
]}

Gladden, L. F. ^{[4
]}

Delgado, J. J. ^{[5
]}

机构：

[1] Queens Univ Belfast, Sch Chem & Chem Engn, Belfast BT9 5AG, Antrim, North Ireland

[2] Univ Birmingham, Sch Chem Engn, Birmingham B15 2TT, W Midlands, England

[3] Johnson Matthey Technol Ctr, Billingham TS23 1LB, Cleveland, England

[4] Univ Cambridge, Dept Chem Engn & Biotechnol, Cambridge CB2 3RA, England

[5] Univ Cadiz, Fac Ciencias, Dept Ciencia Mat & Ingn Met & Quim Inorgan, E-11510 Puerto Real, Cadiz, Spain

来源：

JOURNAL OF CATALYSIS | 2015年 / 330卷

基金：

英国工程与自然科学研究理事会;

关键词：

Selective hydrogenation; Solvent effect; Aromatic ketone; Pt; Titania; LIQUID-PHASE HYDROGENATION; RANEY-NICKEL CATALYSTS; SELECTIVE HYDROGENATION; ALPHA; BETA-UNSATURATED KETONE; CHEMOSELECTIVE HYDROGENATION; ACETOPHENONE HYDROGENATION; AROMATIC KETONES; SUPPORT; METAL; CROTONALDEHYDE;

D O I：

10.1016/j.jcat.2015.06.008

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The hydrogenation of 4-phenyl-2-butanone over Pt/TiO2 and Pt/SiO2 catalysts has been performed in a range of solvents and it has been observed that the solvent impacted on the selectivity of ketone and aromatic ring hydrogenation as well as the overall TOF of the titania catalyst with no solvent effect on selectivity observed using the silica supported catalyst where ring hydrogenation was favored. For the titania catalyst, alkanes were found to favor ring hydrogenation whereas aromatics and alcohols led to carbonyl hydrogenation. A two-site catalyst model is proposed whereby the aromatic ring hydrogenation occurs over the metal sites while carbonyl hydrogenation is thought to occur predominantly at interfacial sites, with oxygen vacancies in the titania support activating the carbonyl. The effect of the solvent on the hydrogenation reaction over the titania catalyst was related to competition for the active sites between solvent and 4-phenyl-2-butanone. (C) 2015 The Authors. Published by Elsevier Inc.

引用

页码：344 / 353

页数：10

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