A group of silica-ionic liquid supported Ru-based catalysts was synthesized and further utilized for CO2 hydrogenation reaction. All the materials were properly analyzed in terms of their physicochemical properties. The physiochemical impacts of different functionalized and non-functionalized ionic liquid over the synthesis, size, and stability of Ru NPs along with their effect on the rate of hydrogenation reaction were investigated. The Ru-[DAMI][NTf2] (1:10)@SiO2 furnished the best catalytic performance in CO2 conversion to formic acid under high-pressure reaction condition. The results confirmed the impact of ionic liquids as a repellent to avoid agglomeration and oxidation of the Ru nanoparticles followed by space resistance and electrostatic protection. Hence, such influence positively begins the rate of reaction as well as the selectivity of the process. Good physiochemical stability of catalyst in terms of 7-time catalyst recycling and easy product/catalyst isolation make this protocol near to the principal of sustainable chemistry.

合成了一组二氧化硅离子液体负载的Ru基催化剂，并将其进一步用于CO2加氢反应。所有材料均经过了理化性质分析。研究了不同官能化和非官能化离子液体对Ru NPs的合成，尺寸和稳定性的物理化学影响，以及它们对氢化反应速率的影响。Ru- [DAMI] [NTf2]（1:10）@ SiO2在高压反应条件下将CO2转化为甲酸方面表现出最佳的催化性能。结果证实了离子液体作为驱避剂的作用，可避免Ru纳米粒子的团聚和氧化，进而避免空间电阻和静电保护。因此，这种影响积极地开始了反应速率以及过程的选择性。就7次催化剂循环利用而言，催化剂具有良好的物理化学稳定性，并且产品/催化剂易于分离，使该方案接近可持续化学原理。