Low-cost and fast synthesis of nanoporous silica cryogels for thermal insulation applications

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	Low-cost and fast synthesis of nanoporous silica cryogels for thermal insulation applications
	Su, Li Fen 1,2; Miao, Lei 1; Tanemura, Sakae 1,3; Xu, Gang 1
刊名	science and technology of advanced materials
	2012-06-01
卷号	13 期号:3
关键词	tert-butyl alcohol vacuum freeze drying silica cryogels thermal insulating
英文摘要	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.
WOS标题词	science & technology ; technology
类目[WOS]	materials science, multidisciplinary
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记录号	WOS:000306492500004
内容类型	期刊论文
源URL	[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
推荐引用方式 GB/T 7714	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).