三聚氰胺改性酚醛基多孔碳材料的制备及其二氧化碳吸附性能

采用浓乳液模板法制备三聚氰胺-间苯二酚-甲醛多孔树脂，将其热解后得到了可用于二氧化碳吸附的氮掺杂多孔碳材料。研究了浓乳液模板的分散相体积分数和三聚氰胺含量对多孔碳材料微观形貌的影响，结果表明，在浓乳液模板分散相体积分数为90%的条件下制备的多孔聚合物具有丰富的通孔结构。经过热解后，得到了兼具无机碳骨架和有机氮活性位点的氮掺杂多孔碳材料。进一步研究了不同热解温度和三聚氰胺含量对多孔碳材料二氧化碳吸附性能的影响，二氧化碳的吸附容量最高可达到3.32 mmol/g，同时表现出良好的选择吸附性和再生性。
Abstract：Porous melamine-resorcinol-formaldehyde resins have been fabricated using a concentrated emulsion template method, and partially pyrolyzed to obtain nitrogen-doped porous carbon materials which can be used for carbon dioxide adsorption. The effects of varying the volume fraction of the internal phase of the concentrated emulsion template and the content of melamine on the morphology of the porous structure were investigated. The porous carbon with a volume fraction of the internal phase of the concentrated emulsion template of 90% has a rich pore structure. After partial carbonization, a nitrogen-doped porous carbon material having both an inorganic carbon skeleton and organic nitrogen active sites was obtained. The effects of different carbonization temperatures and melamine content on the carbon dioxide adsorption performance of the porous carbon materials were further studied. The adsorption capacity of carbon dioxide reached as high as 3.32 mmol/g, and the materials showed good selective adsorption and regenerability.