Influence of the Pt-particle size on the performance of carbon supported catalysts used in the hydrogenation of citral

被引：15

作者：

Bailon-Garcia, Esther ^{[1
]}

Carrasco-Marin, Francisco ^{[1
]}

Perez-Cadenas, Agustin F. ^{[1
]}

Maldonado-Hodar, Francisco J. ^{[1
]}

机构：

[1] Univ Granada, Fac Sci, Dept Inorgan Chem, Res Grp Carbon Mat, Campus Fuentenueva S-N, E-18071 Granada, Spain

来源：

CATALYSIS COMMUNICATIONS | 2016年 / 82卷

关键词：

Pt/C catalysts; Citral; Unsaturated alcohols; Pt-particle size; Selectivity; SELECTIVE HYDROGENATION; CROTONALDEHYDE; ALDEHYDES; PT/SIO2;

D O I：

10.1016/j.catcom.2016.04.014

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 influence of the Pt-particle size in the selective citral hydrogenation is analysed. For that, a Pt/Carbon catalyst has been prepared by impregnation of a carbon xerogel and pre-treated in different conditions to obtain particle sizes varying from 3 to 10 nm. The Pt-particle size has been deeply characterized by HRTEM, XRD, XPS and H-2 chemisorption and related with the catalytic performance in each case. Both activity and selectivity to the valuable unsaturated alcohols are favoured for catalysts with increasing Pt-particle size up to around 8 nm, decreasing for larger particles. In this sense, the interaction and transformation of geranial (E-citral) is also favoured regarding neral (Z-citral). (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：36 / 40

页数：5

共 20 条

[1] Microspheres of carbon xerogel: An alternative Pt-support for the selective hydrogenation of citral [J].

Bailon-Garcia, E. ;

Carrasco-Marin, F. ;

Perez-Cadenas, A. F. ;

Maldonado-Hodar, F. J. .

APPLIED CATALYSIS A-GENERAL, 2014, 482 :318-326

[2] Influence of the pretreatment conditions on the development and performance of active sites of Pt/TiO2 catalysts used for the selective citral hydrogenation [J].

Bailon-Garcia, Esther ;

Carrasco-Marin, Francisco ;

Perez-Cadenas, Agustin F. ;

Maldonado-Hodar, Francisco J. .

JOURNAL OF CATALYSIS, 2015, 327 :86-95

[3] Development of carbon xerogels as alternative Pt-supports for the selective hydrogenation of citral [J].

Bailon-Garcia, Esther ;

Carrasco-Marin, Francisco ;

Perez-Cadenas, Agustin F. ;

Maldonado-Hodar, Francisco J. .

CATALYSIS COMMUNICATIONS, 2015, 58 :64-69

[4] Catalysts Supported on Carbon Materials for the Selective Hydrogenation of Citral [J].

Bailon-Garcia, Esther ;

Maldonado-Hodar, Francisco J. ;

Perez-Cadenas, Agustin F. ;

Carrasco-Marin, Francisco .

CATALYSTS, 2013, 3 (04) :853-877

[5] THE DETERMINATION OF PORE VOLUME AND AREA DISTRIBUTIONS IN POROUS SUBSTANCES .1. COMPUTATIONS FROM NITROGEN ISOTHERMS [J].

BARRETT, EP ;

JOYNER, LG ;

HALENDA, PP .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1951, 73 (01) :373-380

[6] CROTONALDEHYDE AND METHYLCROTONALDEHYDE HYDROGENATION OVER PT(111) AND PT80FE20(111) SINGLE-CRYSTALS [J].

BECCAT, P ;

BERTOLINI, JC ;

GAUTHIER, Y ;

MASSARDIER, J ;

RUIZ, P .

JOURNAL OF CATALYSIS, 1990, 126 (02) :451-456

[7] REACTIVITY OF 3-METHYL-CROTONALDEHYDE ON PT(111) [J].

BIRCHEM, T ;

PRADIER, CM ;

BERTHIER, Y ;

CORDIER, G .

JOURNAL OF CATALYSIS, 1994, 146 (02) :503-510

[8] Characterization of activated carbon fibers by CO2 adsorption [J].

CazorlaAmoros, D ;

AlcanizMonge, J ;

LinaresSolano, A .

LANGMUIR, 1996, 12 (11) :2820-2824

[9] COMPETITIVE C=C AND C=O ADSORPTION OF ALPHA-BETA-UNSATURATED ALDEHYDES ON PT AND PD SURFACES IN RELATION WITH THE SELECTIVITY OF HYDROGENATION REACTIONS - A THEORETICAL APPROACH [J].

DELBECQ, F ;

SAUTET, P .

JOURNAL OF CATALYSIS, 1995, 152 (02) :217-236

[10] Citral hydrogenation over Rh and Pt catalysts supported on TiO2: Influence of the preparation and activation protocols of the catalysts [J].

Ekou, Tchirioua ;

Ekou, Lynda ;

Vicente, Aurelie ;

Lafaye, Gwendoline ;

Pronier, Stephane ;

Especel, Catherine ;

Marecot, Patrice .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2011, 337 (1-2) :82-88

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