预硫化催化剂的表征结果表明，催化剂硫化前后孔容和比表面积变化不大。
The characterization of pre-curing catalyst show that the pore volume and specific surface area had little change after vulcanization.
在相同工艺条件下对比评价结果表明，用EPRES技术制备的器外预硫化催化剂的加氢活性比常规器内硫化的同一催化剂好。
The test results showed that hydrotreating activity of ex-situ presulfided catalysts was superior to that of in-situ sulfided catalysts.
研究了新型固体硫化剂硫代硫酸铵对加氢脱硫催化剂的预硫化。
Ammonium thiosulfate as a novel sulfiding agent was used for desulfidation of hydrodesulfurization ( HDS) catalysts.
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