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Silica supported silver nanoparticles from a silver(I) carboxylate: Highly active catalyst for regioselective hydrogenation

Paper ID Volume ID Publish Year Pages File Format Full-Text
52925 46892 2009 5 PDF Available
Title
Silica supported silver nanoparticles from a silver(I) carboxylate: Highly active catalyst for regioselective hydrogenation
Abstract

The selective hydrogenation of the α,β-unsaturated aldehyde citral (3,7-dimethyl-2,6-octadienal) was investigated with nano-sized silver particles on silica (Ag/SiO2). The catalysts were synthesized from the precursors silver nitrate and silver 2-[2-(2-methoxyethoxy)ethoxy]acetate [AgO2C(CH2OCH2)3H], respectively, and a mean particle diameter in the range of 4–8 nm could be detected via TEM. The results show that these catalysts are selective for CO hydrogenation of citral (SUOL = 71–77% at X = 50%) even at high conversion levels. In addition, the silver carboxylate [AgO2C(CH2OCH2)3H], soluble in water as well as in polar organic solvents, offers a straightforward preparation route for nano-sized silver particles generation.

Keywords
Silver catalyst; Silver 2-[2-(2-methoxyethoxy)ethoxy]acetate; Citral hydrogenation; Geraniol; Nerol
First Page Preview
Silica supported silver nanoparticles from a silver(I) carboxylate: Highly active catalyst for regioselective hydrogenation
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 5, 25 January 2009, Pages 437–441
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis