CAJ | 학술논문

吸附法脱除二氧化碳的关键在于开发高效的吸附剂．采用溶胶-凝胶法制备微孔玻璃，首先通过控制 pH 值、乙醇用量、温度等参数来得到适宜的干凝胶，干凝胶在高温下熔融形成玻璃体后，依次进行分相和酸浸析处理后得到微孔玻璃．结果表明：在pH值1～2、凝胶温度50℃、熔融温度1175℃条件下，可以得到孔径集中在0.7~2.0 nm的微孔玻璃；随着盐酸浓度的升高，微孔玻璃的平均孔径逐渐增大，而孔体积和比表面积则逐渐减小；微孔玻璃对 N2/CO2具有较高的吸附选择性，分离因子可达8.4以上．
흡부법탈제이양화탄적관건재우개발고효적흡부제．채용용효-응효법제비미공파리，수선통과공제 pH 치、을순용량、온도등삼수래득도괄의적간응효，간응효재고온하용융형성파리체후，의차진행분상화산침석처리후득도미공파리．결과표명：재pH치1～2、응효온도50℃、용융온도1175℃조건하，가이득도공경집중재0.7~2.0 nm적미공파리；수착염산농도적승고，미공파리적평균공경축점증대，이공체적화비표면적칙축점감소；미공파리대 N2/CO2구유교고적흡부선택성，분리인자가체8.4이상．
Adsorption separation processes are suitable for the separation of CO2, and the development of an efficient adsorbent to separate CO2 at ambient temperature is still a challenge to be faced. Microporous glass was synthesized by a sol-gel method. The dry gel was prepared by controlling the pH, ethanol amount, temperature and so on. Then, it was melted at a high temperature to get glass precursors and the micro pores were developed by phase separation and acid treatment. Results show that the pore size of microporous glass was mainly distributed from 0.7 nm to 2.0 nm when the pH was 1-2, the gel temperature was 50℃and the melting temperature was 1 175℃. Wider pores could be obtained with a higher concentration of hydrochloric acid. However, the pore volume and specific surface area were decreased. The microprous glass had a high adsorption selectivity for N2/CO2 and the separation factor was higher than 8.4.