首次用取代氨乙基膦酸H2O3PCH2CH2NR1R2(1a-f)与BaCl2反应合成了6种取代氨乙基膦酸钡BaO3PCH2CH2NR1R2载体(2a-f),载体经5%NaOH处理后制得固体碱(3a-f).固体碱用IR,TG,DTG,DSC,碱强度和水中游离碱量进行了表征,用指示剂法测得固体碱强度H-为9 3-15 0,用苯甲酸滴定法测定了载体和固体碱在水中的游离碱量.讨论了载体制备中,回流时间对载体和固体碱在水中的游离碱量的影响.固体碱用于催化Knoevenagel缩合反应,产率高,副反应少,可重复使用8次,且易于再生,是一种环境友好催化剂. Six kinds of substituted BaO3PCH2CH2NR1R2 carrier (2a-f) were synthesized by the reaction of substituted aminoethylphosphonic acid H2O3PCH2CH2NR1R2 (1a-f) with BaCl2. After the carrier was treated with5% NaOH, f). The solid base was characterized by IR, TG, DTG, DSC, base strength and free base amount in water. The solid base strength H- measured by indicator method was 9 3-15 0. The solid base was measured by titration with benzoic acid The amount of free base of carrier and solid base in water was discussed.The influence of reflux time on the amount of free base of carrier and solid base in water was discussed.The solid base was used to catalyze Knoevenagel condensation reaction with high yield and few side reactions, Reusable 8 times and easy to regenerate, is an environmentally friendly catalyst.