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用浸渍法制备了改性阳离子交换树脂,通过红外光谱、热重分析和扫描电镜等对其进行了分析,探讨了不同改性树脂对以苯酚和甲醛为原料催化合成双酚F收率的影响。当等摩尔比Al Cl3和Ti Cl4加入总量为树脂质量的8%,反应温度为80℃,改性时间为10h,Al Cl3-Ti Cl4改性阳离子交换树脂催化合成双酚F,其收率高达90.02%,比未改性或Al Cl3单独改性树脂的催化效果都好,其重复利用率也优于后两者。结果说明,Al Cl3-Ti Cl4改性阳离子交换树脂催化性能好,是一种环境友好高效合成双酚F的催化剂。
The modified cation exchange resin was prepared by impregnation method and analyzed by infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy. The effects of different modified resins on the yield of bisphenol F catalyzed by phenol and formaldehyde were discussed . When the molar ratio of Al Cl3 and Ti Cl4 is 8% of the total amount of resin, the reaction temperature is 80 ℃, the modification time is 10h, bisphenol F is synthesized by Al Cl3-Ti Cl4 modified cation exchange resin, the yield Up to 90.02%. The catalytic effect is better than unmodified or Al Cl3 alone modified resin, and the reuse rate is superior to the latter two. The results show that Al Cl3-Ti Cl4 modified cation exchange resin has good catalytic performance and is an environmentally friendly and efficient catalyst for bisphenol F synthesis.