| 초록 |
Carboxylic acid is a representative by-product of the petrochemical industry and biomass industry. Hydrogenation of acids is an essential organic reaction to obtain high value-added chemicals such as alcohols, diols, and polyols. However, difficulties exist due to the carboxyl group's low reactivity and acidity. To solve this problem, a precise catalyst design is required. In this study, precisely controlled Pt-Re bimetal particles were prepared through a Controlled Surface Reaction (CSR). After forming Pt-H hydride in hydrogen atmosphere, an aqueous Re precursor solution is injected, and Re can be selectively deposited on the surface of the Pt particles through a redox reaction. Then, the effect of the CSR method on the activity was studied using acetic acid as a model reactant. It was shown that the ethanol selectivity was substantially increased to ~70% for the CSR sample due to the more formation of the Pt-Re bimetals, compared to co-impregnated sample. Additionally, a Ni-Re bimetal catalyst was synthesized using the CSR synthesis method. The similar promotional effect was observed for the hydrodeoxygenation of 2-methoxyphenol. |
