【摘要】 将大孔最可几孔径和大孔孔体积占比呈梯度分布的3种双峰孔载体制备成催化剂，考察双峰孔对催化剂物化性质和性能的影响。结果表明，与单峰孔载体制备的渣油加氢降残炭催化剂相比，由于双峰孔载体比表面积的降低以及单位质量羟基数量的降低，催化剂上金属分散度较低，金属与载体间作用力较弱，硫化态活性相平均长度和平均堆积层数均较高。随催化剂中大孔孔体积占总孔体积比例的降低，催化剂的脱硫和降残炭活性增加。更多还原

【Abstract】 Three types of bimodal supports with gradient distribution of the most probable macropore diameter and macropore volume ratio were prepared as catalysts, and the effect of bimodal pores on the physicochemical properties and performance of the catalyst was investigated. The results show that the metal dispersion on the catalyst is lower than that of the residue hydrotreating carbon residue catalyst prepared by single peak pore support. Because of the reduction of the specific surface area of the bimodal pore carrier and the decrease of the number of hydroxyl groups, the interaction between metal and the support is weak, and the average length of the sulfided active phase and the average number of stacked layers are high. With the decrease of the ratio of the volume of macropores to total pore volume, the activity of the catalyst for desulfurization and carbon residue removal increases.更多还原