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Low-cost and fast synthesis of nanoporous silica cryogels for thermal insulation applications
Su, Li Fen1,2; Miao, Lei1; Tanemura, Sakae1,3; Xu, Gang1
2012-06-01
发表期刊SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
卷号13期号:3
摘要Nanoporous silica cryogels with a high specific surface area of 1095m(2) g(-1) were fabricated using tert-butyl alcohol as a reaction solvent, via a cost-effective sol-gel process followed by vacuum freeze drying. The total time of cryogel production was reduced markedly to one day. The molar ratio of solvent/precursor, which was varied from 5 to 13, significantly affected the porous structure and thermal insulating properties of the cryogels. The silica cryogels with low densities in the range of 0.08-0.18 g cm(-3) and thermal conductivities as low as 6.7mW(m.K)(-1) at 100 Pa and 28.3mW(m.K)(-1) at 10(5) Pa were obtained using this new technique.
文章类型Article
关键词Tert-butyl Alcohol Vacuum Freeze Drying Silica Cryogels Thermal Insulating
WOS标题词Science & Technology ; Technology
DOI10.1088/1468-6996/13/3/035003
研究领域[WOS]Materials Science
关键词[WOS]AMBIENT-PRESSURE ; PHYSICAL-PROPERTIES ; AEROGEL GRANULATE ; SOL-GEL ; TRANSPARENT ; CATALYSTS ; MESOPOROSITY ; PRECURSORS ; POWDERS
收录类别SCI
语种英语
WOS类目Materials Science, Multidisciplinary
WOS记录号WOS:000306492500004
引用统计
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/10571
专题中国科学院广州能源研究所
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Japan Fine Ceram Ctr, Mat R&D Lab, Atsuta Ku, Nagoya, Aichi 4568587, Japan
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Su, Li Fen,Miao, Lei,Tanemura, Sakae,et al. Low-cost and fast synthesis of nanoporous silica cryogels for thermal insulation applications[J]. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS,2012,13(3).
APA Su, Li Fen,Miao, Lei,Tanemura, Sakae,&Xu, Gang.(2012).Low-cost and fast synthesis of nanoporous silica cryogels for thermal insulation applications.SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS,13(3).
MLA Su, Li Fen,et al."Low-cost and fast synthesis of nanoporous silica cryogels for thermal insulation applications".SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 13.3(2012).
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