溶胶—凝胶法制备间甲酚甲醛炭气凝胶  

PREPARATION OF MONOLITHIC CARBON AEROGELS FROM M-CRESOL WITH FOEMALDEHYDE THROUGH SOL-GEL PROCESS

作　　者：李文翠[1] 陆安慧[2] 朱盛维[1] 郭树才[1] 

机构地区：[1]大连理工大学炭资源综合利用开放实验室,大连1160112 [2]中国科学院山西煤炭化学研究所,太原030001

出　　处：《燃料化学学报》2000年第4期332-335,共4页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金!资助项目 (No 59672 0 2 6) ;中国科学院山西煤炭化学研究所煤转化国家重点实验室资助

摘　　要：以间甲酚为原料 ,与甲醛在NaOH催化作用下经溶胶—凝胶过程制备出新型块状纳米材料炭气凝胶 ,考察了原料配比对凝胶时间和气凝胶特性的影响 ,用TG、FT -IR、TEM和低温N2 吸附等手段表征了气凝胶的微结构。WT4”BZ]Carbon aerogel was prepared through sol-gel process of m-cresol with formaldehyde catalyzed by NaOH and supercritical drying under CO 2 and then carbonized at the inert atmosphere The effect of materials' ratio on gel time and the property of aerogels was investigated The structure of aerogels was characterized by FT-IR, TG, TEM and BET The results showed that the structure and property of aerogels were affected mainly by the amount of reactant and catalyst The CH 2-O-CH 2 and CH 2- bond were formed in the crosslinking process of m-cresol with formaldehyde The sample weight lost significantly at the 350～650℃ TEM result showed that carbon aerogel has a regular three-dimensions framework The BET surface area of sample was 662 4m 2/g, and the total pore volume is as high as 3 17ml/g calculated by BJH method, which is larger than most organic aerogels reported in literature [WT4”HZ]

关 键 词：炭气凝胶 间甲酚 深胶--凝胶法 甲醛 纳米材料 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ127.11[化学工程—无机化工]