N-亚甲基磷酸化壳寡糖与镧配合物的制备

• 作 者: 许聪 卢瑞 莫宇星 杨华
• 机 构: 广西大学化学化工学院,广西田园生化股份有限公司,
• 出 处: 中国稀土学报
• 发表日期: 2017年03期
• 关键词: 壳寡糖 配合物 物料比 配位数 热重分析仪 红外光谱 时间控制 最佳条件 配位聚合物 植物生长调节剂

用N-亚甲基磷酸化壳寡糖(NMCP)与La(NO3)3反应,制备了N-亚甲基磷酸化壳寡糖与镧的配合物(NMCP-La)。用红外光谱(IR)、热重分析仪(TG)等分析手段对配合物进行了表征。讨论了溶液的酸碱度、反应时间和物料比对配合物形成的影响。结果表明,当pH为4,物料比为1∶1,反应时间控制为10 min时,产物中镧的含量较高,耗能较小。N-亚甲基磷酸化壳寡糖上的-P-OH参与了与镧的配位,配位数是八。

N-Methylene phosphorylated chitooligosaccharides (NMCP-La) were synthesized by the reaction of NMCP and La (NO3) 3. The complexes were characterized by infrared spectroscopy (IR) and thermogravimetric analysis (TG). The effects of solution pH, reaction time and material ratio on the complex formation were discussed. The results show that when the pH is 4, the material ratio is 1: 1 and the reaction time is controlled at 10 min, the content of lanthanum in the product is higher and the energy consumption is smaller. P-OH on N-methylene phosphorylated chitooligosaccharides is involved in the coordination with lanthanum with a coordination number of eight.