2009 Fiscal Year Final Research Report
Development of Hydrogen Separation Membranes with Controlled Silica Network sizes by structured Alkoxides
| Project/Area Number |
20760517
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Properties in chemical engineering process/Transfer operation/Unit operation
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| Research Institution | Hiroshima University |
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Principal Investigator |
KANEZASHI Masakoto Hiroshima University, 大学院・工学研究科, 助教 (10467764)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 水素分離膜 / 構造化アルコキシド / ゾル-ゲル法 / 分子ふるい |
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| Research Abstract |
Bis (triethoxysilyl) ethane (BTESE), which consists of Si-C-C-Si bonds, was used as a silica precursor to prepare organic-inorganic hybrid silica membranes with loose amorphous networks. Pore size distribution, as determined by single gas permeation, suggested BTESE-derived silica membranes had loose amorphous silica structures compared to TEOS-derived silica membranes due to the differences in the minimum units of silica networks; for example, BTESE-derived silica membranes showed high hydrogen permeance (0.5-2.0×10^<-5>mol・m^<-2>・s^<-1>・Pa^<-1>) with high selectivity of H_2 to SF_6 (H_2/SF_6 permselectivity: 1,000-30,000) and low H_2 to N_2 permselectivity (10-20).
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