Abstract The Ni/SiO2 catalysts were prepared by ammonia evaporation method, with nickel nitrate as Ni source and silica sol as the SiO2 source, for synthesis of 2-MTHF from 2-MF hydrogenation. The catalytic performance of catalysts prepared at different calcination temperatures were tested on a fixed-bed reactor. XRD, N2 adsorption-desorption isothermal, H2-TPR, NH3-TPD, XPS and TG were employed to characterize the structure and surface properties of these catalysts. The effect of calcination temperature on the structure, surface property and catalytic performance of catalysts were investigated. The result indicated that all the catalysts had a phyllosilicate structure after calcination, and maintained the structure after reduction. Ni particles dispersed well with smaller size and strong metal support interaction showed high activity. The surface acidity of catalysts was influenced by the calcination temperature. The maximum catalytic activity and selectivity were obtained on the catalyst calcined by at 500°C, which exhibited a 2-MF conversion of 100% and the 2-MTHF selectivity of 93.5% at the optimized condition, due to smaller particle size and suitable surface acidity.

中文翻译：

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氨蒸发法制备Ni/SiO2用于2-MF加氢合成2-MTHF

摘要 以硝酸镍为Ni源，硅溶胶为SiO2源，采用氨蒸发法制备Ni/SiO2催化剂，用于2-MF加氢合成2-MTHF。在固定床反应器上测试了在不同煅烧温度下制备的催化剂的催化性能。采用XRD、N2吸附-脱附等温、H2-TPR、NH3-TPD、XPS和TG对这些催化剂的结构和表面性质进行了表征。研究了煅烧温度对催化剂结构、表面性质和催化性能的影响。结果表明，所有催化剂在煅烧后均具有层状硅酸盐结构，还原后结构保持不变。Ni颗粒分散良好，尺寸较小，金属载体相互作用强，表现出较高的活性。催化剂的表面酸度受煅烧温度的影响。在 500°C 煅烧的催化剂上获得了最大的催化活性和选择性，在优化条件下，2-MF 转化率为 100%，2-MTHF 选择性为 93.5%，这是由于粒径较小且表面合适。酸度。