摘要
五商业离子交换树脂催化剂的热稳定性与不同的起始的水内容在 150 和 200 件树脂样品的范围在多达 600 的提高的温度和等温的温度借助于热 gravimetric 分析(TGA ) 被学习也被调查。学习显示了那 TGA，作为为塞子流动反应堆系统途径的一个补足的评估方法，能在离子交换树脂催化剂的热稳定性上为学习被用作一个快分析工具。等温地对待的树脂催化剂的 stoichiometric 计算基于 FTIR 分析和酸能力证实在 150 和 200 点的树脂的重量损失被 desulfonation 过程引起并且 desulfonation 主要在苯戒指的帕拉位置发生在树脂。H+ 离子和潮湿在 desulfonation 过程起了一个重要作用。
The thermal stability of five commercial ion-exchange resin catalysts was studied by means of thermal gravimetric analysis （TGA） at elevated temperatures of up to 600℃ and isothermal temperatures in the range of 150℃ and 200 ℃. Resin samples with different initial water contents were also investigated. The study indicated that TGA, as a complementary evaluating method for the plug flow reactor system approach, could be used as a fast analyzing means for study on the thermal stability of ion-exchange resin catalysts. The stoichiometric calculation of the isothermally treated resin catalysts based on the FTIR analysis and acid capacity confirmed that the weight loss of the resins at 150℃ and 200℃ was caused by the desulfonation process and that desulfonation occurred mainly at the para-position of the benzene ring in the resins. H＋ ions and moisture played an important role in the desulfonation process.
基金
supported financially by the Purolite Company and Chinese National Natural Science Foundation(20674069)
