【摘要】 本文报导一种以氧化铝纤维为载体的高效加氢催化剂。当用于裂解汽油双烯加氢时,其活性,选择性及稳定性均很好。在温和的反应条件下(温度40℃,压力40kg/Cm~2、氢油比(mol)0.5),液体空速可高达40ml/g·hr。在连续运转1000小时后,产品中双烯含量<0.5,催化剂活性未见下降。此外,还讨论了此类催化剂活性较高的原因。更多还原

【Abstract】 A new type of Pd/Al₂O₃（fiber）catalyst is developed for selective hydrogenation of diolefins in cracked naphthas.The performance of the catalyst is featured by its excellent activity,good selectivity and a long life.At 50 atm,70℃ and feeding rate of up to 1000 ml/g.hr,the diene value of the product is less than 0.5.At 40 atm,40℃ and feeding rate of 40 ml/g.hr,no apparent decline of activity is observed after 1000 hrs operation.Good performance of this new type catalyst may be attributed to the lower mass transfer resistance together with higher liquid holdup of the fibrous carrier in a trickle bed and high activity of the composite cata-lyst prepared therewith.更多还原