关键词: 烯基琥珀酸酐 , 固体酸 , 合成 , 催化性能

Abstract: Nonterminal olefin of C₁₃~C₁₄ and maleic anhydride were used as raw materials to prepare alkenyl succinic anhydride (ASA) in a probe reaction. SO₄^2-/TiO₂ solid acid catalyst was used to synthesize ASA. The catalytic activity and stability of the catalyst were studied. The yield was quantitatively analyzed by gas chromatography. The results show that SO₄^2-/TiO₂ catalyst has high activity and good stability in the synthesis of ASA. The optimum conditions are as follows: the calcination temperature of catalyst is 550 ℃, reaction temperature is 190 ℃, reaction time is 5 h, the amount of catalyst is 1% compared with reactant total mass, the molar ratio of nonterminal olefin and anhydride is 3∶1, and the amount of antioxidant 2,6-di-tert-butyl-p-cresol is 0.5% compared with reactant total mass. The yield of ASA reaches 46.8% in the optimum conditions.

Key words: Alkenyl succinic anhydride ,  , Solid acid , Synthesis,  , Catalytic properties