Preparation of SO42-/ZrO2 Solid Superacid Catalyst and Its Catalytic Performance in the Isomerization of α-Methylnaphthalene
State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Shanghai Research Institute of Petrochemical Technology, SINOPEC, Shanghai 201208, China
Abstract In order to prepare stable high activity catalyst of α-methylnaphthalene isomerization, the synthesized SO42-/ZrO2 solid superacid catalyst was modified by metal ion doping. The effects of catalyst modification method, reaction temperature, reaction pressure and weight hourly space velocity (WHSV) on the isomerization of α-methylnaphthalene were investigated in a fixed bed reactor. The results showed that the performance of SO42-/ZrO2 solid superacid catalyst prepared by reverse dropping method and doped with 2% Al was the best. Under the optimal operating conditions of temperature 230 ℃, pressure 1.0 MPa and the WHSV of α-methylnaphthalene 1.0 h-1, the conversion of α-methylnaphthalene was more than 70%, the selectivity of β-methylnaphthalene was more than 95% and the selectivity of recombinants was less than 0.2%. The experimental results of catalyst stability and regeneration showed that the catalyst regeneration performance was excellent, which has a good prospect of industrial application.
LIU Yuanlin,GAO Huanxin. Preparation of SO42-/ZrO2 Solid Superacid Catalyst and Its Catalytic Performance in the Isomerization of α-Methylnaphthalene[J]. 化学反应工程与工艺, 2019, 35(6): 570-575.
LIU Yuanlin,GAO Huanxin. Preparation of SO42-/ZrO2 Solid Superacid Catalyst and Its Catalytic Performance in the Isomerization of α-Methylnaphthalene[J]. 化学反应工程与工艺, 2019, 35(6): 570-575.
