Method for improving catalyst selectivity

The invention provides a method for improving the catalyst selectivity. The catalyst selectivity regulation process is added between the sulfuration process and the normal production process, and in the catalyst selectivity regulation process, catalyst active raw materials make contact with a catalyst for 24-70 h in the catalyst active gas atmosphere under the catalyst active reaction condition. By adoption of the method, the catalyst selectivity can be improved, and compared with the prior art, under the condition that gasoline products are the same in sulphur content, the olefin saturation rate is lower, and product octane value loss is smaller. 种提高催化剂选择性的方法，在硫化过程和正常生产过程之间增加催化剂选择性调控过程，所述的催化剂选择性调控过程是指催活原料在催活气体的气氛中、在催活反应条件下与催化剂接触24-70小时。采用本发明提供的方法，可以提高催化剂的选择性。与现有技术相比，在汽油产品硫含量相同的情况下，烯烃饱和率更低，产品辛烷值损失更小。