摘要
低密度ＳｉＯ２气凝胶是一种新型纳米多孔材料，它不仅可作为惯性约束聚变的低温冷冻靶，还可作为ＨＴＯ蒸汽的吸附剂用于放射性物质的环境监测。用ＳＥＭ、ＴＥＭ、ＢＥＴ、孔径分布等测试方法对低密度ＳｉＯ２气凝胶的微结构进行了研究；分别以水和苯作为吸附介质，用吸附天平对其吸附特性进行了测试。
Nano porous material SiO 2 aerogels can not only be used as a low temperature Nuclear Target in ICF but also be used as an adsorbent of HTO vapor. BET,SEM,Pore Size Distribution and TEM techniques were used to characterize the morphology and pore structure of the low-density silica aerogels. Gas adsorption of the low density silica aerogels was measured for the samples with various densities(18.6～200 kg·m -3 ). Measurements were done at various pressure drops with water and benzene. The results of the adsorption isotherms were analyzed with BET multilayer adsorption theory.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
1999年第2期215-219,共5页
High Power Laser and Particle Beams
基金
国家自然科学基金
863基金
启明星后基金
污染控制与资源化研究国家重点实验室基金
