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制备了酸强度为-14.52的SO_4~(2-)TiO_2-A1_2O_3-SnO_2固体超强酸,考察了浸渍液H_2SO_4的浓度、金属原子配比、焙烧时间对其酸强度的影响。该催化剂催化合成马来酸二正戊酯,具有很好的催化性能。
The SO_4 ~ (2-) TiO_2-A1_2O_3-SnO_2 solid superacid with acid strength of -14.52 was prepared. The effect of H_2SO_4 concentration, metal atom ratio and calcination time on the acid strength was investigated. The catalyst catalyzes the synthesis of di-n-pentyl maleate and has good catalytic performance.