LOSA-1, spent FCC and Gamma-Al2O3 were used as the catalysts in the experiment. Spent FCC and LOSA-1 were provided by Sinopec Yangzi Petrochemical Co., Ltd. LOSA-1 is a commercial additive for increasing olefin yield in catalytic cracking process. The main content of LOSA-1 is ZSM-5. Spent FCC was a spent commercial catalyst which was used in FCC (Fluidized Catalytic Cracking) process. Gamma-Al2O3 was provided by Shanghai Yuejiang Titanium Chemical Manufacture Co., Ltd. The particle size of all catalysts distributed from 150 to 230 meshes. The detailed analysis of the catalysts, such as NH3-TPD, BET and chemical composition analysis, are shown in Fig. S1, Tables S1 and S2, respectively.