Abstract: Catalyst for the selectively hydrogenation of diolefins in cracked C₅ fraction was prepared，and the effect of main technical conditions such as reaction pressure，liquid hourly space velocity (LHSV)，molar ratio of hydrogen to diolefins and inlet temperature on catalytic performance were investigated. The optimized technical conditions are：inlet temperature 30－40 ℃，reaction pressure 2.0—3.0 MPa，molar ratio of hydrogen to diolefins 1.5－2.5 and LHSV 2－4 h^-1，with which the conversion of diolefins and the selectivity to monolefins were achieved to more than 95% and 90%，respectively. The prepared catalyst has good stability and regeneration performance.

摘要： 通过对裂解碳五（C₅）馏分中双烯烃选择加氢催化剂的研制及其加氢工艺条件试验，考察了反应压力、空速、氢/双烯摩尔比和入口温度等主要工艺条件对催化性能的影响，得出裂解C₅双烯烃选择加氢的适宜工艺条件为：入口温度30～40 ℃、反应压力2.0～3.0 MPa、氢/双烯摩尔比1.5～2.5、体积时空速为2～4 h^-1。在上述条件下研制的催化剂可以使双烯烃转化率大于95％，生成单烯烃的选择性大于90％。稳定性试验结果表明研制的催化剂具有良好的稳定性。通过再生，催化剂可恢复原有的催化性能。