在改性Hβ沸石催化剂上FCC汽油的加氢改质

Bifunctional catalysts for FCC gasoline hydroupgrading were synthesized using Hβ as support, Ni as the active component and P, Mg and La as promotor respectively in this experiment. Effects of different calcining methods to eliminate template agent on Naβ carrier were studied. Effects of species and content of auxiliary on the properties of the catalysts were studied. The results showed that stage-by-stage calcination could prevent effectively the molecular sieves from eliminating aluminum and keep well the original crystallites and the specific surface area. In the reaction of FCC gasoline hydroupgrading, alkene content of gasoline can be decreased effectively and conversion of alkene can reach 65% using Ni-β catalysts modified with P (mass percent: 0.25％). At the same time, it can also ensure basically octane number not reduced.