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Increased dispersion of supported gold during methanol carbonylation conditions.

Research paper by Alexandre A Goguet, Christopher C Hardacre, Ian I Harvey, Katabathini K Narasimharao, Youssef Y Saih, Jacinto J Sa

Indexed on: 02 May '09Published on: 02 May '09Published in: Journal of the American Chemical Society



Abstract

The active site in supported gold catalysts for the carbonylation of methanol has been identified as dimers/trimers of gold which are formed from large gold particles >10 nm in diameter. Methyl iodide was found to be critical for this dispersion process and to maintain the catalyst in the active form. This study also shows that it may be possible to redisperse gold catalysts, in general, after reaction.