Issue 7, 2006
From the journal:

New Journal of Chemistry

Highly dispersed nickel and palladium nanoparticlesilica aerogels: sol–gel processing of tethered metal complexes and application as catalysts in the Mizoroki–Heck reaction

Sandra Martínez,ab   Marcial Moreno-Mañas,†a   Adelina Vallribera,*a   Ulrich Schubert,*b   Anna Roigc  and  Elies Molinsc  

* Corresponding authors

a Department of Chemistry, Universitat Autònoma de Barcelona, Cerdanyola, Spain
E-mail: adelina.vallribera@uab.es
Fax: 34 935811265
Tel: 34 935813045

b Institute of Materials Chemistry, Vienna University of Technology, Wien, Austria
E-mail: usschubert@mail.zserv.tuwien.ac.at
Fax: 43 5880115399
Tel: 43 5880115320

c Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, Cerdanyola, Spain
Fax: 34 935805729
Tel: 34 935801853

Abstract

Highly dispersed Ni and Pd silica aerogels were prepared through sol–gel processes. They have been synthesized by tethering the metal to the silica matrix with the use of the complexing silanes AEAPTS [N-(aminoethyl)aminopropyl]trimethoxysilane or TRIAMIN [N-((aminoethyl)aminoethyl)aminopropyl]trimethoxysilane. The gels were dried with scCO2 to afford the aerogels. High metal dispersion and small particle sizes were observed through HRTEM and XRD measurements. The organic groups were removed by oxidation and/or pyrolysis. The Pd reduced aerogels containing 15–17% of palladium are good recoverable catalysts in the Mizoroki–Heck reaction.

Graphical abstract: Highly dispersed nickel and palladium nanoparticle silica aerogels: sol–gel processing of tethered metal complexes and application as catalysts in the Mizoroki–Heck reaction

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Article information

DOI
https://doi.org/10.1039/B604544H
Article type
Paper
Submitted
29 Mar 2006
Accepted
16 May 2006
First published
31 May 2006

New J. Chem., 2006,30, 1093-1097

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Highly dispersed nickel and palladium nanoparticle silica aerogels: sol–gel processing of tethered metal complexes and application as catalysts in the Mizoroki–Heck reaction

S. Martínez, M. Moreno-Mañas, A. Vallribera, U. Schubert, A. Roig and E. Molins, New J. Chem., 2006, 30, 1093 DOI: 10.1039/B604544H

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