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- W41013403 abstract "Alcohols such as propanol and n- butanol have been oxidised to aldehydes by resin- supported gold in the liquid phase, and several other primary and secondary alcohols have been oxidised with very high selectivity in vapour phase over a 1wt% Au/SiO 2 catalyst between 373- 573K. In this work, the adsorption of propan-1-ol was carried over 1%Au/TiO 2 catalysts prepared by deposition precipitation method. This was further investigated using Pulse Flow reactor, TPFRP, TPD, and XRD,. The adsorption of propan-1-ol over TiO 2 (P25) indicated a full monolayer with much of it in a dissociated state, forming propoxy group on the cationic site and hydroxyl group at anions. The propoxy is relatively stable until about 250 o C, at which dehydration to propene occurs by bimolecular surface reaction. As the concentration of propoxy on the surface disappear, so mechanism reverts to a decomposition pathway, producing CO 2 and H 2 O. However, the presence of gold on the catalyst is marked with complete conversion of propan-1-ol at low temperature (230 o C) lower than Titania (300 o C). Similarly, propan-1-ol oxidation on Au/TiO 2 catalyst was followed by dehydration to propene at 300 o C (Characteristic of TiO2) and dehydrogenation to propanal at high temperature. The evolution of CO 2 and H 2 appear to be due to the production of formate species on the surface of the catalyst. This formate species is mainly involved in the complete oxidation reaction of propan-1-ol on the catalysts. Keywords: Gold Catalysis, Propan-1-ol Oxidation, TPD, TPFRP, XRD" @default.
- W41013403 created "2016-06-24" @default.
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- W41013403 date "2014-01-01" @default.
- W41013403 modified "2023-09-26" @default.
- W41013403 title "Propan-1-ol Oxidation Reaction on Au/TiO 2 Catalysts" @default.
- W41013403 hasPublicationYear "2014" @default.
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