【摘要】：以廢棄核桃殼為載體材料、癸酸為相變材料,采用微波加熱法制備癸酸/多孔活性炭功能材料。采用傅里葉紅外光譜儀對(duì)癸酸/多孔活性炭功能材料制備過(guò)程各階段的合成物質(zhì)進(jìn)行測(cè)試,即活性炭前驅(qū)體制備階段、多孔活性炭制備階段和癸酸/多孔活性炭功能材料制備階段。研究癸酸/多孔活性炭功能材料制備過(guò)程中多孔活性炭復(fù)雜網(wǎng)絡(luò)結(jié)構(gòu)形成機(jī)理、癸酸嵌入方式、癸酸與多孔活性炭的嵌合機(jī)理,闡明微波加熱法制備癸酸/多孔活性炭功能材料的相關(guān)機(jī)理。同時(shí)采用動(dòng)態(tài)水分吸附分析儀、差示掃描量熱儀和環(huán)境測(cè)試艙對(duì)癸酸/多孔活性炭功能材料的濕性能、熱性能和吸附性能進(jìn)行測(cè)試。結(jié)果表明:癸酸/多孔活性炭功能材料具有發(fā)達(dá)的孔結(jié)構(gòu)和復(fù)雜的網(wǎng)絡(luò)結(jié)構(gòu),其中部分孔隙吸附癸酸,部分孔隙吸附甲醛分子,孔隙表面具有親水性的官能團(tuán)吸附水分子。癸酸/多孔活性炭功能材料具有較好的濕性能、熱性能和吸附性能,其在相對(duì)濕度40%~60%,平衡含濕量為0.063 1~0.257 0g·g~(-1);相變溫度為27.42~33.96℃,相變焓為52.14~52.67J·g~(-1);經(jīng)過(guò)4h對(duì)甲醛氣體的吸附效率為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，

本文編號(hào)：2137113