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以甲基丙烯酸缩水甘油酯(GMA)为单体,二乙烯苯(DVB)为交联剂,采用悬浮聚合法制备GMA-DVB共聚物,进一步通过多乙烯多胺与环氧基之间的开环反应,制备固态胺吸附剂。研究了有机胺类型、吸附温度、流速等对CO_2吸附性能的影响。结果表明,当吸附温度为25℃、流速为30m L/min、CO_2浓度为10vol%、有机胺为TEPA时,此固态胺吸附剂对CO_2的吸附量达到1.93mmol/g。经过8次循环再生吸附后,吸附量仍能保持在初始吸附量的97%。同时采用FT-IR、EA、BET、TG等方法对吸附材料进行了表征。研究结果表明,此固态胺吸附材料具有良好的热稳定性,对CO_2具有良好的吸附性能,是一种理想的固态胺吸附剂。
GMA-DVB copolymer was prepared by the suspension polymerization method with glycidyl methacrylate (GMA) as monomer and divinylbenzene (DVB) as cross-linking agent. The copolymer was further prepared by copolymerization of polyvinylamine and epoxy Ring reaction to prepare a solid amine adsorbent. The effects of organic amine types, adsorption temperature and flow rate on the adsorption properties of CO_2 were studied. The results showed that when the adsorption temperature was 25 ℃, the flow rate was 30m L / min, the CO_2 concentration was 10vol%, and the organic amine was TEPA, the adsorption amount of CO_2 to the solid amine adsorbent reached 1.93mmol / g. After 8 cycles of regeneration adsorption, the adsorption capacity can still maintain the initial adsorption capacity of 97%. Adsorption materials were characterized by FT-IR, EA, BET, TG and so on. The results show that the solid amine adsorbent possesses good thermal stability and good adsorption to CO_2, which is an ideal solid amine adsorbent.