CAJ | 학술논문

为弥补常规钠基吸收剂活性差、脱碳量低的不足，制备了多种表面氨基修饰的新型复合型钠基吸收剂并研究其脱碳特性。通过比较氨基流失率和实际脱碳量，选定二氧化硅的前驱物正硅酸乙酯为载体前驱物，以碳酸钠为活性成分，分别以3-氨基丙基三甲氧基硅烷(APS)、3-氨基丙基三乙氧基硅烷(APTES)、二乙烯三胺(DETA)、三乙烯四胺(TETA)为氨基前驱物，制备得到多种表面氨基修饰的复合型钠基吸收剂。探究各种吸收剂的孔隙结构与脱碳特性，结果表明，APS、APTES修饰后吸收剂孔隙特性较差，脱碳量较低，DETA、TETA修饰后吸收剂孔隙结构得到改善，脱碳量较高。
위미보상규납기흡수제활성차、탈탄량저적불족，제비료다충표면안기수식적신형복합형납기흡수제병연구기탈탄특성。통과비교안기류실솔화실제탈탄량，선정이양화규적전구물정규산을지위재체전구물，이탄산납위활성성분，분별이3-안기병기삼갑양기규완(APS)、3-안기병기삼을양기규완(APTES)、이을희삼알(DETA)、삼을희사알(TETA)위안기전구물，제비득도다충표면안기수식적복합형납기흡수제。탐구각충흡수제적공극결구여탈탄특성，결과표명，APS、APTES수식후흡수제공극특성교차，탈탄량교저，DETA、TETA수식후흡수제공극결구득도개선，탈탄량교고。
In order to improve the CO2 sorption performance of sodium-based sorbent, a series of sodium-based sorbents with amino modificationwere prepared by sol-gel method and the corresponding CO2 sorption capacity were investigated in this paper. Tetraethylorthosilicate (TEOS) was chosen as the carrier precursor by comparing the amine loss rate and CO2 sorption capacity of pure –NH2 sorbents,and Na2CO3 was as the active ingredient. 3-aminopropyltrimethoxysilane (APS), 3-aminopropyltriethoxysilane (APTES), diethylenetriamine (DETA) and triethylenetetramine (TETA) were used, respectively as the amino precursor for synthesizing the composite sorbents and then drying them with conventional technique. Results showed that the sorbent modified with TETA had the highest CO2 sorption capacity and the best pore structure, while that modified with APTES had the lowest amine loss but poor structure.