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Volumn 130, Issue 51, 2008, Pages 17362-17371

Vertical columnar block-copolymer-templated mesoporous silica via confined phase transformation

Author keywords

[No Author keywords available]

Indexed keywords

2D STRUCTURES; ANODIC ALUMINA MEMBRANES; BRIJ-56; CONFINED SPACE; EFFICIENT METHOD; EVAPORATION-INDUCED SELF-ASSEMBLY; INDUCED PHASE TRANSFORMATION; INORGANIC SALTS; INTERFACIAL INTERACTION; MESOPHASE; MESOPOROSITY; MESOPOROUS SILICA; MESOSTRUCTURE; NONIONIC; PHASE MIXTURE; PHASE TRANSFORMATION; PLURONIC; PRECURSOR SOLUTIONS; SALT COMPOSITION; SMALL ANGLE X-RAY SCATTERING; STRUCTURAL CONTROL; SYNTHESIS PARAMETERS; SYSTEMATIC INVESTIGATIONS; TEMPLATED MESOPOROUS SILICAS; VERTICAL CHANNELS;

EID: 67749086543     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja803102y     Document Type: Article
Times cited : (43)

References (34)
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    • Yang, Z.; Niu, Z.; Cao, X.; Yang. Z.; Lu, Y.; Hu, Z.; Han, C. C. Atteew. Chem., Int. Ed, 2003, 42, 4201-4203.
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    • Yamaguchi. A.; Yoda, T.; Suzuki, S.; Morita. K.; Teramae, N. Anal. Sci- 2006, 22, 1501-1507.
    • Yamaguchi. A.; Yoda, T.; Suzuki, S.; Morita. K.; Teramae, N. Anal. Sci- 2006, 22, 1501-1507.
  • 19
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    • Cagnol, F.; Grosso, D.; Soler-Illia, G. J. de A. A.; Crepaldi, E. L.; Babonneau. F.; Amenitsch, H.; Sanchez. C. J. Mater. Chem, 2003, 13, 61-66.
    • Cagnol, F.; Grosso, D.; Soler-Illia, G. J. de A. A.; Crepaldi, E. L.; Babonneau. F.; Amenitsch, H.; Sanchez. C. J. Mater. Chem, 2003, 13, 61-66.
  • 34
    • 67849129829 scopus 로고    scopus 로고
    • The porosity of the alumina membrane is 25-50% according to the manufacturer. For the silica material around 50% of the are pores, estimated from TEM micrographs. The density of the alumina (without pores) is about 3.98 g/cm3 (α-alumina, and the density of the silica (without pores) is about 2.65 g/cm3 (quarz, Hence, from 1 cm 3 composite material, 0.75-0.5 cm3 originate from alumina material while only 0.125-0.25 cm3 is silica material. With the respective densities, 1 cm3 composite contains 0.33-0.66 g silica and 2.98-1.99 g alumina depending on the original membrane porosity (25-50, This corresponds to a silica content of 10-25 wt, in the composite. Thus, only one-fourth to one-tenth of the specific surface area of pure mesoporous material can be obtained for the composite highly ordered SB A-15 materials show specific surface areas of 500-800 m2/g; for the corresponding composite, surfac
    • 2/g can be expected). Note that the discussed weight correction does not take into account possible incomplete filling of the AAM, pore-blocking effects due to the long channel system, or reduction of the surface area due to formation of relatively large pores in the confined environment (see text).


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