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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
Source PublicationSCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
Volume13Issue:3
AbstractNanoporous 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.
SubtypeArticle
KeywordTert-butyl Alcohol Vacuum Freeze Drying Silica Cryogels Thermal Insulating
WOS HeadingsScience & Technology ; Technology
DOI10.1088/1468-6996/13/3/035003
WOS Subject ExtendedMaterials Science
WOS KeywordAMBIENT-PRESSURE ; PHYSICAL-PROPERTIES ; AEROGEL GRANULATE ; SOL-GEL ; TRANSPARENT ; CATALYSTS ; MESOPOROSITY ; PRECURSORS ; POWDERS
Indexed BySCI
Language英语
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000306492500004
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10571
Collection中国科学院广州能源研究所
Affiliation1.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
Recommended Citation
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).
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