孔道结构对渣油加氢脱金属催化剂活性的影响

Effect of pore structure on activity of resid hydrodemetallization catalysts

选择性制备3种不同孔道结构的渣油加氢脱金属催化剂,并进行渣油加氢脱金属和加氢脱硫活性评价。结果表明,一定量大孔(>50 nm)的存在,能够提高催化剂单位表面积的加氢脱金属活性;加氢脱硫活性与体积比表面积成正比。

Three kinds of resid hydrodemetallization catalysts with different pore structures were selectively prepared. Hydrodemetallization and hydrodesulfurization activities of catalysts were evaluated. The results showed that the presence of a certain amount of macropores（ 〉 50 nm） could enhance hydrodemetalliza- tion activity per surface area of the catalyst. Hydrodestdfurization activity was proportional to the volumetric specific surface area.