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硅基介孔材料是一种典型的吸附材料,但其对CO_2的吸附以物理吸附为主,其吸附能力有待改善提高。在合成一种硅基介孔材料基础上,对其进行氧化钙改性,提高材料的碱性位以改善其二氧化碳吸附能力。经过测试发现,氧化钙的引入有助于提高CO_2吸附能力,但同时会降低材料的比表面积,所以掺杂量增加到一定程度其二氧化碳吸附能力有所降低。
Silica-based mesoporous materials are a kind of typical adsorbent materials, but their adsorption on CO 2 is mainly physical adsorption, and their adsorption capacity needs improvement. Based on the synthesis of a silicon-based mesoporous material, calcium oxide is modified to improve the basicity of the material to improve its carbon dioxide adsorption capacity. After testing, it is found that the introduction of calcium oxide helps to improve the CO 2 adsorption capacity, but at the same time it reduces the specific surface area of the material, so the amount of doping increases to a certain extent and its carbon dioxide adsorption capacity is reduced.