The Ti/SiO_2 catalyst used for gas phase polymerization of propylene and ethylene/propylene consists of SiO_2, BEM, 2, 2, 2-trichloroethanol, TiCl_4, etc.

• 以SiO_2、丁基乙基镁(BEM)、三氯乙醇、TiCl_4为主要原料合成了Ti/SiO_2催化剂。