【摘要】 氢能是重要的可再生清洁能源，催化剂载体是影响甲醇重整制氢效率的关键因素。以SiO₂@TiO₂粉体为原料制备了新型催化剂载体，通过浸渍法吸附锌、镍、铈等金属离子合成催化剂，研究了载体的物理性能、吸附性能及其对催化剂催化性能的影响。结果表明：SiO₂@TiO₂载体具有较高的热稳定性和抗压强度，且孔径主要分布在5 nm附近，比表面积为138.930 m²·g^-1;该载体对锌、镍、铈等活性金属具有良好的吸附性能，浸渍温度为80℃、浸渍时间为50 min时吸附效果最好；通过对比Al₂O₃载体和SiO₂@TiO₂载体对催化剂催化性能的影响，发现新型SiO₂@TiO₂载体在高温条件下具有更高氢气选择性。该研究可为开发新型甲醇重整制氢催化剂提供参考。更多还原

【Abstract】 Hydrogen energy is an important renewable clean energy source, and the catalyst carrier is a key factor affecting the efficiency of methanol reforming for hydrogen production. A new type of catalyst carrier was prepared using SiO₂@TiO₂ powder as raw material. The catalyst was synthesized by adsorbing metal ions such as zinc, nickel, and cerium through the impregnation method. The physical and adsorption properties of the carrier and its impact on the catalytic performance of the catalyst were studied. The results indicate that the SiO₂@TiO₂ carrier has high thermal stability and compressive strength, and the pore size is mainly distributed around 5 nm, with a specific surface area of 138.930 m²·g^-1; the carrier has good adsorption performance for active metals such as zinc, nickel, and cerium. The best adsorption effect is achieved when the impregnation temperature is 80 ℃ and the impregnation time is 50 minutes; by comparing the influence of Al₂O₃ carrier and SiO₂@TiO₂ carriers on the catalytic performance of catalysts, it is found that the new SiO₂@TiO₂ carriers has higher hydrogen selectivity at high temperature. This study can provide a reference for the development of new methanol-reforming catalysts for hydrogen production.更多还原