Pd-Promoter/MCM-41: A Highly Effective Bifunctional Catalyst for Conversion of Carbon Dioxide

As on today, the conversion of carbon dioxide into methanol has been considered as one of the top research priorities all over the world. In this work, a series of supported Pd catalysts was prepared by impregnation method with using Pd (NO3)(2) as a precursor and employed as a catalyst in the synthesis of methanol from carbon dioxide. In this process, the surface area and pore volume of support affected the Pd dispersity and catalytic activity of supported Pd catalyst. At the same time, the catalytic performance was enhanced when the alkaline earth oxide CaO was used as a promoter, and the effect of the loading of Pd and promoter was investigated. The 12.1 % of CO2 conversion and the 65.2 % of selectivity for methanol were obtained over the catalyst Pd6Ca3/MCM-41 at 9 h on-stream. [GRAPHICS] .