CAJ | 학술논문

1-氨丙基-3-甲基咪唑溴盐（[APMIm][Br]）离子液体通过化学反应捕集CO2。采用浸渍-蒸发将[APMIm][Br]离子液体负载在硅胶表面，通过比表面孔隙吸附测定仪、热重分析仪（TGA）对吸收剂的结构与性能进行研究，负载量为10%～50%，温度为303.15～323.15 K，CO2浓度分别为10%、30%、50%。结果表明：硅胶表面的离子液体薄膜厚度达到86 nm（负载40%）时，具有最快的吸收速率，且受CO2浓度和温度变化的影响较小，平衡吸收量在50% CO2体系中达到理论吸收量的80%，随着温度的升高而降低，当负载量为50%时，膜厚增加到230 nm，导致吸收速率和平衡吸收量大幅度下降。值得注意的是：负载离子液体吸收剂在循环使用3次之后，结构与性能均保持不变，表现出一定的工业运用前景。
1-안병기-3-갑기미서추염（[APMIm][Br]）리자액체통과화학반응포집CO2。채용침지-증발장[APMIm][Br]리자액체부재재규효표면，통과비표면공극흡부측정의、열중분석의（TGA）대흡수제적결구여성능진행연구，부재량위10%～50%，온도위303.15～323.15 K，CO2농도분별위10%、30%、50%。결과표명：규효표면적리자액체박막후도체도86 nm（부재40%）시，구유최쾌적흡수속솔，차수CO2농도화온도변화적영향교소，평형흡수량재50% CO2체계중체도이론흡수량적80%，수착온도적승고이강저，당부재량위50%시，막후증가도230 nm，도치흡수속솔화평형흡수량대폭도하강。치득주의적시：부재리자액체흡수제재순배사용3차지후，결구여성능균보지불변，표현출일정적공업운용전경。
CO2 was absorbed by 1-aminopropyl-3-methylimidazolium bromine([APMIm][Br])as chemical reaction. The absorbents were prepared by supporting ionic liquids on porous silica gel through the impregnation-evaporation method, and pore structure and absorption capacity were characterized with specific surface pore adsorption apparatus and thermogravimetric analysis, respectively. CO2 absorption was conducted under the following conditions: 10% to 50% of ionic liquids loading, 303.15 K to 323.15 K of temperature, and 10%, 30%, 50% of CO2 in mixed gas. The results suggested that absorption rate was fastest when film thickness of ionic liquids on the silica gel was 86 nm, and was little affected by the change of CO2 concentration and temperature. Equilibrium absorption amount reached 80% of the theoretical uptake in 50% CO2 system, and was reducing with increasing temperature. However, absorption rate and capacity decreased obviously as film thickness of ionic liquid exceeded 230 nm. The properties of supported ionic liquid absorbent remained unchanged after recycling three times, showing the prospect of industrial use.