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用２００μｇ／ｇ（以渣油中的金属为基准）二烷基二硫代氨基甲酸钼、环烷酸镍、环烷酸铁等几种油溶性催化剂或其混合物在氢初压７．０ＭＰａ、温度４３０℃、反应时间１ｈ的操作条件下裂化处理辽河减压渣油，结果表明，双金属催化剂体系中存在着轻微的协同效应，当铁、钼（或镍）两种金属含量的质量比在２∶３附近时，协同效应最为显著，但在抑制生焦反应的同时，也降低了渣油的转化率。催化剂的活性形式是非化学计量的硫化物，在多组分体系条件下形成复合硫化物。
With 200μg / g (based on the metal residue) molybdenum dialkyl dithiocarbamate, nickel naphthenate, iron naphthenate and other oil-soluble catalysts or mixtures thereof hydrogen initial pressure 7.0MPa, Temperature 430 ℃ and reaction time 1h. The results show that there is a slight synergistic effect in the bimetallic catalyst system. When the mass ratio of iron, molybdenum (or nickel) In the vicinity of 2:3, the synergistic effect is the most significant, but it also reduces the conversion rate of residual oil while suppressing the coke reaction. The active form of the catalyst is a non-stoichiometric sulfide that forms a complex sulphide under the conditions of a multi-component system.