油溶性催化剂在渣油悬浮床加氢反应中的加氢抑焦作用

合成了油溶性Mo、Ni催化剂，并将两种单金属催化剂进行复配形成Mo/Ni复配催化剂，采用FT-IR、AAS分析方法对合成催化剂进行表征，在考察Mo、Ni及Mo/Ni复配催化剂油溶性的基础上，对不同催化剂在KLAR悬浮床加氢反应中的加氢效果进行考察，并与临氢热烈化反应结果进行对比。结果表明：Mo、Ni催化剂中的活性组分Mo、Ni质量分数分别为5.60%、5.86%；Mo、Mo/Ni、Ni催化剂的I值(单位生焦轻油收率)逐渐降低，说明它们的加氢抑焦效果依次减弱；而且Mo/Ni复配催化剂表现出了一定的协同效应，其在KLAR悬浮床加氢反应中可以成为生焦载体，延缓焦粒的富集、长大。

HYDROGENATION ACTIVITY AND COKE RESTRAINING ABILITY OF OIL-SOLUBLE CATALYSTS FOR RESIDUE SLURRY-BED HYDROCRACKING

Oil-soluble Mo and Ni catalysts applied in residue slurry-bed hydrocracking have been successfully synthesized and Mo/Ni catalyst has been obtained from the mixtures of these two kinds of monometallic catalysts. FT-IR and ASS analysis were used to characterize the properties of synthesized catalysts. Compared with thermal cracking in presence of hydrogen, KLAR slurry-bed hydrocracking was carried out, after the solubility study of Mo, Ni and Mo/Ni catalysts, to evaluate the hydrogenation activity of all catalysts. The results indicated Mo content was 5.60% in Mo catalyst and Ni content was 5.86% in Ni catalyst, respectively. The order of I (light oil yield per coke) was Mo＞Mo/Ni＞Ni, which meant the order of hydrogenation activity and coke restraining ability was Mo＞Mo/Ni＞Ni. Furthermore, Mo/Ni catalysts not only played a synergistic effect in hydrogenation activity but also could act as coke carrier and prevented the coke from gathering and growing.