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究了原料中硫化合物对苯部分加氢催化剂活性和选择性的影响，得出：苯中硫化合物主要影响催化剂的选择性，在一定范围内对活性影响不太明显。原料苯中硫化合物含量（体积分数）应低于 ５ × １０－６，超过这一范围，选择性开始下降。同时确定了硫化合物中毒为吸附性中毒，具有不可逆性。
The effects of sulfur compounds on the activity and selectivity of partial hydrogenation of benzene in the feedstock were investigated. The results showed that the sulfur compounds in benzene mainly affect the selectivity of the catalyst, and have little effect on the activity within a certain range. Raw material benzene sulfur content (volume fraction) should be less than 5 × 10-6, beyond this range, the selectivity began to decline. At the same time, it was determined that sulfur compound poisoning was adsorptive poisoning and irreversible.