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以间苯二酚(R)和甲醛(F)为碳源,N-氨乙基-3-氨丙基三乙氧基硅烷为硅源,无水乙醇为溶剂,利用简捷的一步溶胶-凝胶法和CO2超临界干燥工艺制备碳硅复合有机气凝胶。进一步考察了凝胶时间随G、H2O以及乙醇的不同添加量的变化,利用FTIR、TG以及CO2吸附脱附方法对气凝胶进行表征。结果表明:碳硅复合气凝胶对CO2的吸附量随着G含量的增加而增加,最高吸附量达到了2.51mmol·g-1。
Using resorcinol (R) and formaldehyde (F) as carbon sources, N-aminoethyl-3-aminopropyltriethoxysilane as the silicon source and absolute ethanol as the solvent, a simple one-step sol- Preparation of carbon-silicon composite organic aerogels by gel method and CO2 supercritical drying process. The gel time was further investigated with the addition of G, H 2 O and ethanol. The aerogels were characterized by FTIR, TG and CO 2 adsorption and desorption methods. The results showed that the adsorption capacity of carbon-silicon composite airgel increased with the increase of G content, and the maximum adsorption capacity reached 2.51 mmol · g-1.