Novel Pt0 catalysts supported on functional resins for the chernoselective hydrogenation of citral to the α, β-unsaturated alcohols geraniol and nerol

被引：38

作者：

Centomo, P

Zecca, M

Lora, S

Vitulli, G

Caporusso, AM

Tropeano, ML

Milone, C

Galvagno, S

Corain, B

机构：

[1] Dipartimento Sci Chim, I-35131 Padua, Italy

[2] CNR, Ist Sintesi Organ Fotoreattiv, I-35020 Legnaro, Italy

[3] Ist Chim Composti Organomet, Dipartimento Chim & Chim Ind, I-56126 Pisa, Italy

[4] Dipartimento Chim Ind, I-98166 Messina, Italy

[5] CNR, Ist Sci & Tecnol Molecolari, Sez Padova, Dipartimento Sci Chim, I-35131 Padua, Italy

来源：

JOURNAL OF CATALYSIS | 2005年 / 229卷 / 02期

关键词：

nanoclustered platinum(0); functional resins; selective hydrogenation; alpha; beta-unsaturated aldehyde;

D O I：

10.1016/j.jcat.2004.10.018

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：

Nanoclustered Pt-0 catalysts based on cross-linked macromolecular matrices are evaluated in the hydrogenation of an alpha, beta-unsaturated aldehyde (citral). Matrices and catalysts are characterized by inverse steric exclusion chromatography, scanning electron microscopy, X-ray microprobe analysis, and transmission electron microscopy. The monometallic catalysts exhibit remarkable selectivity for geraniol/nerol when 2-3-nm, regularly shaped, spherical metal nanoclusters are deposited on the Supports from solutions of solvated platinum atoms prepared by metal vapor synthesis (MVS). The immobilization in the polymer framework of ions of a second metal such as Fe(II), Co(II), or Zn(II) enhances the selectivity of the Pt catalysts by up to more than 90%. (C) 2004 Elsevier Inc. All rights reserved.

引用

页码：283 / 297

页数：15

共 37 条

[1] Selective hydrogenation of unsaturated aldehydes into unsaturated alcohols: Role of metal-support interactions in platinum catalysts [J].