NMR in the Study of Surfaces; 1H CRAMPS and 29Si CP-MAS Studies of Silica
作者： Gary E. Maciel
DOI: 10.1007/978-94-011-0756-3_13
关键词: Hydrogen bond 、 Chemical engineering 、 Spinning 、 Cross polarization 、 Composite number 、 Fumed silica 、 Materials science 、 Geminal 、 Silanol
摘要: Both 1H and 29Si magic-angle spinning (MAS) NMR techniques are very useful for characterizing structure dynamics of the silica surface. 1H→29Si cross polarization (CP) provides a largely surface selective approach, although D2O exchange experiments demonstrate that small percentage silanols not accessible to water hence behave as interior silanols. The CP strategy also permits correlation CRAMPS-derived information on silanol hydrogen bonding with CP-MAS-derived distinction between single (Q3) silicons geminal (Q2) silicons. A working model can be constructed composite 100 111 faces β-cristobalite.
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sci-hub.st 参考文章(79)
H. Douglas Morris, Paul D. Ellis, Aluminum-27 cross polarization of aluminas. The NMR spectroscopy of surface aluminum atoms Journal of the American Chemical Society. ,vol. 111, pp. 6045- 6049 ,(1989) , 10.1021/JA00198A012
T. M. Duncan, K. W. Zilm, D. M. Hamilton, T. W. Root, Adsorbed states of CO on dispersed metals: a high-resolution solid-state NMR study The Journal of Physical Chemistry. ,vol. 93, pp. 2583- 2590 ,(1989) , 10.1021/J100343A067
I Ssuer Chuang, David R. Kinney, Charles E. Bronnimann, Robert C. Zeigler, Gary E. Maciel, Effects of proton-proton spin exchange in the silicon-29 CP-MAS NMR spectra of the silica surface The Journal of Physical Chemistry. ,vol. 96, pp. 4027- 4034 ,(1992) , 10.1021/J100189A022
Kurt W Zilm, Laurent Bonneviot, Gary L Haller, Oc Hee Han, M Kermarec, Carbon-13 NMR spectra of carbon-13 monoxide adsorbed on silica-supported palladium particles: particle size dependence of the surface diffusion rate and the carbon-13 Knight shift The Journal of Physical Chemistry. ,vol. 94, pp. 8495- 8498 ,(1990) , 10.1021/J100386A001
Paul D. Majors, Paul D. Ellis, Surface site distributions by solid-state multinuclear NMR spectroscopy. Pyridine binding to .gamma.-alumina by nitrogen-15 and deuterium NMR Journal of the American Chemical Society. ,vol. 109, pp. 1648- 1653 ,(1987) , 10.1021/JA00240A008
Alexis T. Bell, Alexander Pines, NMR Techniques in Catalysis ,(1994)
D.E. O'Reilly, Magnetic Resonance Techniques in Catalytic Research Advances in Catalysis. ,vol. 12, pp. 31- 116 ,(1960) , 10.1016/S0360-0564(08)60600-8
Dieter Michel, Günter Engelhardt, High-resolution solid-state NMR of silicates and zeolites John Wiley and Sons,New York, NY. ,(1987)
Robert C. Zeigler, Gary E. Maciel, A study of the structure and dynamics of dimethyloctadecylsilyl-modified silica using wide-line 2H NMR techniques Journal of the American Chemical Society. ,vol. 113, pp. 6349- 6358 ,(1991) , 10.1021/JA00017A001