Abstract
Organic tethers have been incorporated into acid- and base-catalysed silica sol–gels. The surface area is modified by this insertion suggesting an interaction at a molecular level. The HCl-catalysed SiO2 sol–gel had its relative extent of adsorption at 298 K of CH4 relative to H2O:
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(i)
depressed by the addition of 5% bis(triethoxysilyl)methane
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(ii)
increased by the addition of 5% bis(trimethoxysilyl)hexane
which attributed the tether hydrophilic-lipophilic balance (HLB). The reasons for this unexpected physical adsorption of CH4 at a temperature far above its boiling point are now being explored, along with the potential of these materials for selective hydrocarbon sensors and separators.
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References
C.M. Wu, T.W. Xu, W.H. Yang, J. Membrane Sci. 216, 269 (2003).
G.D. West, G.G. Diamond, N. Dajda, M.E. Smith, M.H. Lewis Brit. Ceram. Trans. 102, 93 (2003).
H.Y. Chang, and C.W. Lin, J. Mem. Sci. 218, 295 (2003).
J.G. Leadley, M.S.W. Vong P.A. Sermon Ceramic Transactions 81, 61 (1998); M. Montes, F.P. Getton M.S.W. Vong, P.A. Sermon J. Sol–Gel Sci. Technol. 8, 131 (1997)
M.S.W. Vong, N. Bazin, and P.A. Sermon, J. Sol-Gel. Sci. Technol. 8, 499 (1997).
P.A. Sermon and J.G. Leadley poster ‘Molecular Design of Hydrophobic Sol–gel SiO2-TiO2 Coatings,’ J. Sol-Gel Sci. Technol. 32(1–3), 293 (2004).
M.S.W. Vong, N. Bazin, P.A. Sermon, J. Sol–Gel. Sci. Technol. 8, 499 (1997).
M.S.W. Vong and P.A. Sermon, Thin Solid Films 293, 185 (1997)
Y. Sun, M.S.W. Vong, and P.A. Sermon, J. Sol–Gel Sci. Tech. 8, 493 (1997)
Y. Sun, P.A. Sermon, and M.S.W. Vong, Thin Solid Films 278, 135 (1996)
P.A. Sermon, M.S.W. Vong, R. Badheka, D. Grosso, and J.E. Andrew, Proc. SPIE 3047, 442 (1997)
D.M. Spriggs, P.A. Sermon, M.S.W. Vong, and Y. Sun, J.E. Andrew Proc. SPIE 2714 537 (1996)
P.A. Sermon, M.S.W. Vong, R. Badheka, and D. Grosso, J.E. Andrew Proc. SPIE 3047 442 (1996)
R. Badheka, N.J. Bazin, P.A. Sermon, M.S.W. Vong, and J.G. Leadley, Ceram. Trans. 81, 235 (1998);
M.S.W. Vong, P.A. Sermon, Y. Sun, and D.M. Spriggs Proc. SPIE 2633, 446 (1995)
P.A. Sermon, M.S.W. Vong, N. Bazin, and R. Badheka, Proc. SPIE 2633, 464 (1995)
D.M. Spriggs, P.A. Sermon, M.S.W. Vong, and Y. Sun, Proc. SPIE 27l4, 537 (1995).
A. Nakajima, K. Abe, K. Hashimoto, and T. Watanabe, Thin Solid Films 376, 140 (2000).
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MaCgibbon, R.M.A., Badheka, R. & Sermon, P.A. Organically-Modified Silica Xerogels for Adsorption of CH4 at 298 K. J Sol-Gel Sci Technol 32, 53–56 (2004). https://doi.org/10.1007/s10971-004-5764-x
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DOI: https://doi.org/10.1007/s10971-004-5764-x