Jump to main content
Jump to site search

Issue 10, 2011
Previous Article Next Article

The base-free and selective oxidative transformation of 1,3-propanediol into methyl esters by different Au/CeO2 catalysts

Author affiliations

Abstract

Different Au/CeO2 catalysts, prepared by depositing gold on different facets of ceria nanocubes ({100}), nanorods ({110} and {100}) and nanopolyhedra ({111} and {100}), were separately characterized by means of XRD, N2 sorption, TPD and TPR. It was found that certain types of Au/CeO2 could selectively catalyze the oxidative transformation of 1,3-propanediol in methanol to methyl 3-hydroxypropionate, methyl 3-methoxypropionate, methyl acrylate or dimethyl malonate by molecular oxygen in the absence of any base. The selectivities of these Au/CeO2 catalysts depended on the shapes of the supporting CeO2 and the reaction temperature. The Au/CeO2 cube catalyst with less acidic and basic sites exhibited high selectivity towards methyl 3-hydroxypropionate (93.1% at 21.6% conversion). Comparatively, selectivities towards methyl acrylate (41.6% at 92.3% conversion) and methyl 3-methoxypropionate (40.2% at 92% conversion) increased using Au/CeO2 rod and polyhedron catalysts, which contained more acidic and basic sites than the cube catalyst. Moreover, we found the Au/CeO2 cube catalyst could be recycled without losing the gold nanoparticles.

Graphical abstract: The base-free and selective oxidative transformation of 1,3-propanediol into methyl esters by different Au/CeO2 catalysts

Back to tab navigation

Supplementary files

Article information


Submitted
23 May 2011
Accepted
12 Jul 2011
First published
12 Aug 2011

Green Chem., 2011,13, 2690-2695
Article type
Communication

The base-free and selective oxidative transformation of 1,3-propanediol into methyl esters by different Au/CeO2 catalysts

X. Wang, G. Zhao, H. Zou, Y. Cao, Y. Zhang, R. Zhang, F. Zhang and M. Xian, Green Chem., 2011, 13, 2690
DOI: 10.1039/C1GC15588A

Social activity

Search articles by author

Spotlight

Advertisements