CO oxidation on TiO2 supported gold catalysts
نویسنده
چکیده
The aim within this project was to optimise the CO oxidation over TiO2 supported gold catalysts, focusing on two different preparation methods; deposition precipitation (DP) and photodeposition (PD), using different types of TiO2 and varying the theoretical gold loading. The catalyst were characterised with TEM (size) and ICP-AES (loading). For DP catalysts, the support is important for high activity, in contrast to PD catalysts. DP catalysts were found to be superior over PD, regarding CO oxidation activity. The activity seems to be independent of the theoretical gold loading for PD catalysts. Yet, this is probably due to the gold deposit not decreasing enough when the theoretical gold loading is decreased.
منابع مشابه
CO oxidation over Au/TiO2 prepared from metal-organic gold complexes
Although the early publications by Bond et al. [1,2] and Parravano et al. [3,4] reported that small gold particles exhibited catalytic activity for some reactions, such as hydrogenation of olefins and oxygen transfer reactions, gold was generally considered to be catalytically inactive [5]. Over the past 20 years, the volume of literature on the application of gold catalysts has been steadily i...
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