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首次用二甲胺乙基膦酸与氯化钡在碱性溶液中制得二甲胺乙基膦酸钡载体 ,用 5 % Na OH溶液处理该载体 ,制得相应的固体碱 .并用元素分析、 IR、 TG、 DTA、 DTG对其进行了表征 .用指示剂法 ,测得固体碱碱强度(H- )为 9.3～ 15 .0 ;采用苯甲酸滴定法 ,测定了载体 2和固体碱 3在水中的游离碱量 ;讨论了载体制备中 ,回流时间对载体 2和固体碱 3在水中游离碱量的影响 .将固体碱用于催化 Konevenagel缩合反应 ,产物收率高 ,操作方便 ,后处理简单 ,无废酸碱液排放 ,催化剂可重复使用 8次 ,且易于再生 ,是一种环境友好催化剂
For the first time, dimethylaminoethyl phosphonic acid and barium chloride were used to prepare dimethylamine ethyl phosphonate carrier in alkaline solution, and the carrier was treated with 5% NaOH solution to obtain the corresponding solid base. , IR, TG, DTA and DTG, respectively.Using the indicator method, the solid alkali strength (H-) was 9.3-15.0; the titration of benzoic acid The amount of free base in water was discussed.The effect of reflux time on the amount of free base of carrier 2 and solid base 3 in water was discussed.The solid base was used to catalyze Konevenagel condensation reaction.The product yield was high and the operation was convenient. Simple, no waste acid-base lye, the catalyst can be reused eight times, and easy to regenerate, is an environmentally friendly catalyst