基于傅里叶红外光谱的生物质环境协调功能材料制备机理及性能研究
发布时间：2018-07-22 10:24
【摘要】：以废弃核桃壳为载体材料、癸酸为相变材料,采用微波加热法制备癸酸/多孔活性炭功能材料。采用傅里叶红外光谱仪对癸酸/多孔活性炭功能材料制备过程各阶段的合成物质进行测试,即活性炭前驱体制备阶段、多孔活性炭制备阶段和癸酸/多孔活性炭功能材料制备阶段。研究癸酸/多孔活性炭功能材料制备过程中多孔活性炭复杂网络结构形成机理、癸酸嵌入方式、癸酸与多孔活性炭的嵌合机理,阐明微波加热法制备癸酸/多孔活性炭功能材料的相关机理。同时采用动态水分吸附分析仪、差示扫描量热仪和环境测试舱对癸酸/多孔活性炭功能材料的湿性能、热性能和吸附性能进行测试。结果表明:癸酸/多孔活性炭功能材料具有发达的孔结构和复杂的网络结构,其中部分孔隙吸附癸酸,部分孔隙吸附甲醛分子,孔隙表面具有亲水性的官能团吸附水分子。癸酸/多孔活性炭功能材料具有较好的湿性能、热性能和吸附性能,其在相对湿度40%~60%,平衡含湿量为0.063 1~0.257 0g·g~(-1);相变温度为27.42~33.96℃,相变焓为52.14~52.67J·g~(-1);经过4h对甲醛气体的吸附效率为50.57%。
[Abstract]:The functional material of sebacic acid / porous activated carbon was prepared by microwave heating with waste walnut shell as carrier and sebacic acid as phase change material. Fourier transform infrared spectroscopy (FTIR) was used to test the synthetic substances in each stage of the preparation process of Sebacic acid / porous activated carbon functional material, that is, the preparation stage of activated carbon precursor. The preparation of porous activated carbon and the preparation of sebacic acid / porous activated carbon functional materials. The formation mechanism of complex network structure of porous activated carbon, the intercalation of sebacic acid and porous activated carbon, and the chimeric mechanism of sebacic acid and porous activated carbon were studied. The mechanism of preparation of sebacic acid / porous activated carbon by microwave heating was described. At the same time, the wet, thermal and adsorption properties of sebacic acid / porous activated carbon were measured by dynamic water adsorption analyzer, differential scanning calorimeter (DSC) and environmental test chamber. The results show that the functional materials of sebacic acid / porous activated carbon have developed pore structure and complex network structure, in which some pores adsorb sebacic acid, some pores adsorb formaldehyde molecules, and the pore surface has hydrophilic functional groups to adsorb water molecules. The sebacic acid / porous activated carbon functional material has good wet, thermal and adsorption properties. Its equilibrium moisture content is 0.063 ~ (-1) 0.257 g ~ (-1), phase transition temperature is 27.42 鈩，
本文编号：2137113
[Abstract]:The functional material of sebacic acid / porous activated carbon was prepared by microwave heating with waste walnut shell as carrier and sebacic acid as phase change material. Fourier transform infrared spectroscopy (FTIR) was used to test the synthetic substances in each stage of the preparation process of Sebacic acid / porous activated carbon functional material, that is, the preparation stage of activated carbon precursor. The preparation of porous activated carbon and the preparation of sebacic acid / porous activated carbon functional materials. The formation mechanism of complex network structure of porous activated carbon, the intercalation of sebacic acid and porous activated carbon, and the chimeric mechanism of sebacic acid and porous activated carbon were studied. The mechanism of preparation of sebacic acid / porous activated carbon by microwave heating was described. At the same time, the wet, thermal and adsorption properties of sebacic acid / porous activated carbon were measured by dynamic water adsorption analyzer, differential scanning calorimeter (DSC) and environmental test chamber. The results show that the functional materials of sebacic acid / porous activated carbon have developed pore structure and complex network structure, in which some pores adsorb sebacic acid, some pores adsorb formaldehyde molecules, and the pore surface has hydrophilic functional groups to adsorb water molecules. The sebacic acid / porous activated carbon functional material has good wet, thermal and adsorption properties. Its equilibrium moisture content is 0.063 ~ (-1) 0.257 g ~ (-1), phase transition temperature is 27.42 鈩，
本文编号：2137113
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