燃料化学学报2000，Vol.28Issue(1)：33-35,3.
混甲酚甲醛炭气凝胶的制备及表征
PREPARATION AND CHARACTERIZATION OF CRESOL
MIXTURE AND FORMALDEHYDE AEROGELS
摘要
Abstract
Carbon aerogels are unique porous carbon materials whose composition, structure and properties can be controlled at nanometer scale. In this paper, cresol mixture firstly as raw material, by sol-gel polymerization, acid aging, supercritical fluid drying and pyrolysis result in the formation of aerogels and carbon aerogels. The effect of operating condition of pyrolysis on structure and porperties of carbon aerogels are investigated through orthogonal experiment. TG, TEM and N2 absorption are used to characterize carbon aerogels. The results show that operating condition order of pyrolysis is as: heating rate＞pyrolysis final temperature＞holding time. The density of carbon aerogels is 0.260g/cm3 under optimal operating condition while the pores size is typically smaller than 50nm.关键词
炭气凝胶/混合甲酚/溶胶-凝胶法/超临界干燥/炭化Key words
carbon aerogells/cresol mixture/sol-gel/supercritical drying/pyrolysis分类
化学化工引用本文复制引用
李文翠,郭树才..混甲酚甲醛炭气凝胶的制备及表征[J].燃料化学学报,2000,28(1):33-35,3.
