Liquid phase hydrogenation of α,β-unsaturated aldehydes over gold supported on iron oxides

被引：53

作者：

Lenz, Jennifer ^{[2
]}

Campo, Betiana C. ^{[1
]}

Alvarez, Mariana ^{[3
]}

Volpe, Maria A. ^{[1
]}

机构：

[1] PLAPIQUI UNS CONICET, RA-8000 Bahia Blanca, Buenos Aires, Argentina

[2] Univ Saarland, D-66123 Saarbrucken, Germany

[3] Univ Nacl Sur, Dpto Quim, RA-8000 Bahia Blanca, Buenos Aires, Argentina

来源：

JOURNAL OF CATALYSIS | 2009年 / 267卷 / 01期

关键词：

Selective hydrogenation; alpha; beta-unsaturated aldehydes; Iron oxides; Gold catalyst; SELECTIVE HYDROGENATION; CATALYSTS; NANOPARTICLES; CROTONALDEHYDE; IDENTIFICATION; OXIDATION; ALCOHOL; SITES;

D O I：

10.1016/j.jcat.2009.07.012

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：

Goethite, hematite, and iron oxide supported on alumina are employed as supports for gold catalysts. Several samples are prepared and are characterized by TEM, TPR, and XANES. The catalysts are tested for the liquid phase hydrogenation of crotonaldehyde and cinnamaldehyde in a Batch reactor at 100 degrees C and at 1 MPa of H-2 employing isopropanol as the solvent. Gold particles supported on the different iron oxides are more selective than the ones supported on an inert oxide (gamma-Al2O3). Gold supported on hematite presents the highest selectivity toward the unsaturated alcohol. It is concluded that the promotional effect of iron on gold is neither due to the redox properties of the support nor due to the presence of charged gold particles. No dependence of selectivity to crotyl alcohol or to cinnamyl alcohol on gold particle size was observed. The origin of the improved selectivity to the unsaturated alcohol of Au/iron oxides would be related to morphological aspects of gold particles. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：50 / 56

页数：7

共 29 条

[1] Promotion by sulfur of gold catalysts for crotyl alcohol formation from crotonaldehyde hydrogenation [J].

Bailie, JE ;

Hutchings, GJ .

CHEMICAL COMMUNICATIONS, 1999, (21) :2151-2152

[2] Hydrogenation of but-2-enal over supported Au/ZnO catalysts [J].

Bailie, JE ;

Abdullah, HA ;

Anderson, JA ;

Rochester, CH ;

Richardson, NV ;

Hodge, N ;

Zhang, JG ;

Burrows, A ;

Kiely, CJ ;

Hutchings, GJ .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2001, 3 (18) :4113-4121

[3] Kinetic study of a direct water synthesis over silica-supported gold nanoparticles [J].

Barton, DG ;

Podkolzin, SG .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (06) :2262-2274

[4] FTIR study of the low-temperature water-gas shift reaction on Au/Fe2O3 and Au/TiO2 catalysts [J].

Boccuzzi, F ;

Chiorino, A ;

Manzoli, M ;

Andreeva, D ;

Tabakova, T .

JOURNAL OF CATALYSIS, 1999, 188 (01) :176-185

[5] Hydrogen chemisorption on Al2O3-supported gold catalysts [J].

Bus, E ;

Miller, JT ;

van Bokhoven, JA .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (30) :14581-14587

[6] Origin of the cluster-size effect in the hydrogenation of cinnamaldehyde over supported Au catalysts [J].

Bus, Eveline ;

Prins, Roel ;

van Bokhoven, Jeroen A. .

CATALYSIS COMMUNICATIONS, 2007, 8 (09) :1397-1402

[7] Hydrogenation of crotonaldehyde on different Au/CeO2 catalysts [J].

Campo, Betiana ;

Petit, Corinne ;

Volpe, Maria A. .

JOURNAL OF CATALYSIS, 2008, 254 (01) :71-78

[8] Selective hydrogenation of crotonaldehyde on Au/HSA-CeO2 catalysts [J].

Campo, Betiana ;

Volpe, Maria ;

Ivanova, Svetlana ;

Touroude, Raymonde .

JOURNAL OF CATALYSIS, 2006, 242 (01) :162-171

[9] On the nature of goethite, Mn-goethite and Co-goethite as supports for gold nanoparticles [J].

Campo, Betiana C. ;

Rosseler, Olivier ;

Alvarez, Mariana ;

Rueda, Elsa H. ;

Volpe, Maria A. .

MATERIALS CHEMISTRY AND PHYSICS, 2008, 109 (2-3) :448-454

[10] Supported gold nanoparticles from quantum dot to mesoscopic size scale:: Effect of electronic and structural properties on catalytic hydrogenation of conjugated functional groups [J].

Claus, P ;

Brückner, A ;

Mohr, C ;

Hofmeister, H .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (46) :11430-11439

← 1 2 3 →