Abstract: | Catalyst for the selectively hydrogenation of diolefins in cracked C_5 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 monolefms were achieved to more than 95% and 90%, respectively. The prepared catalyst has good stability and regeneration performance. |