摘要
稻壳在稀盐酸中沸煮、干燥后,于540℃裂解,制得了一种SiO2气凝胶.ICP-AES测定结果表明了该气凝胶中SiO2质量含量为99.99％,激光粒度仪测定其体积平均粒径为20.77μm,BET法研究表明了该气凝胶的比表面积为251m2/g.并利用XRD、IR和SEM研究了稻壳在制备气凝胶过程中的结构变化.
A SiO2 aerogel was prepared with rice husk, being cooked in boiling solution of diluent hydrochloric acid, then dried, and then pyrolyzed. The results show that the SiO2 Mass content in aerogel is 99.99%, the average particle size is 20.77 mum, and the specific surface area is 251m(2)/g determined by ICP-AES, particle size analyzer and surface area & pore size analyzer respectively. The structure transformation of rice husk during the aerogel preparation was investigated by XRD, IR and SEM.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2003年第2期407-412,共6页
Journal of Inorganic Materials
关键词
稻壳
气凝胶
裂解
制备
rice husk
SiO2 aerogel
pyrolysate
preparation
