关键词: 一氧化碳, 加氢, 铑, 催化剂, 乙醇, C2含氧化合物, 载体效应, 金属-载体相互作用, 硅胶

Abstract: Supported Rh-based catalysts are one of the most efficient catalysts for CO hydrogen to C2-oxygenates，such as ethanol from coal or biomass via syngas，however，the selection of support is vitally important for the design and preparation of the catalyst. Herein，the catalytic performances and the research progresses of silica，Al2O3，TiO2，porous carbon materials，zeolites，and mixed oxides supported Rh-based catalysts were reviewed. The effects of support properties，such as the impurities，pore structures，acid-base properties，the reactivity of surface groups，and reducibility，on the chemical-physical properties and thus catalytic performance of Rh-based catalysts were compared and summarized. The results showed that the key point to understand the support effect was to investigate the interactions between metal （promoters） and support. Accordingly，novel support with proper pore structures，weakly basic，moderate surface reactivity and reducibility should be designed and synthesized，which could modify the interaction between support and Rh combing with the optimization of preparation and activation conditions. This ensures more active sites for syngas conversion and thus makes the maximum use of Rh，pushing the commercialization of this process.

Key words: carbon oxide, hydrogenation, rhodium, catalyst, ethanol, C2-oxygenates, support effect, metal-support interaction, silica