The formation of metastable aluminosilicates in the Al–Si–H2O system: Results from solution chemistry and solid-state NMR spectroscopy
作者： Harris E. Mason , Robert S. Maxwell , Susan A. Carroll
DOI: 10.1016/J.GCA.2011.07.031
关键词: Solid-state nuclear magnetic resonance 、 Phase (matter) 、 Nuclear magnetic resonance 、 Spectroscopy 、 Metastability 、 Precipitation (chemistry) 、 Magic angle spinning 、 Physical chemistry 、 Aluminosilicate 、 Chemistry 、 Silicate
摘要: Abstract We present the results of a series experiments designed to probe interactions between Al and amorphous silica surface as function thermodynamic driving forces. The from 27Al single pulse magic angle spinning (SP/MAS) 27Al{1H} rotational echo double resonance (REDOR) allow us identify reaction products constrain their structure. In all cases, despite low Si concentrations we observe formation metastable aluminosilicates. Results temperature indicate that forces for gibbsite precipitation separate octahedrally coordinated (Al[6]) tetrahedrally (Al[4]) silicate phases. At higher temperatures Al[4] phase dominates speciation. Structural models derived NMR data are also proposed, discussed they relate previous work on Al/Si cycling.
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Mark E. Smith, Kenneth J. D. MacKenzie, Multinuclear solid-state NMR of inorganic materials Pergamon. ,(2002)
Philippe Van Cappellen, Suvasis Dixit, Justus van Beusekom, Biogenic silica dissolution in the oceans: Reconciling experimental and field-based dissolution rates Global Biogeochemical Cycles. ,vol. 16, pp. 23- 1 ,(2002) , 10.1029/2001GB001431
E. Lippmaa, A. Samoson, M. Magi, High-resolution aluminum-27 NMR of aluminosilicates Journal of the American Chemical Society. ,vol. 108, pp. 1730- 1735 ,(1986) , 10.1021/JA00268A002
Alexander J Vega, MAS NMR spin locking of half-integer quadrupolar nuclei☆ Journal of Magnetic Resonance. ,vol. 96, pp. 50- 68 ,(1992) , 10.1016/0022-2364(92)90287-H
Etienne Balan, Michele Lazzeri, Guillaume Morin, Francesco Mauri, First-principles study of the OH-stretching modes of gibbsite American Mineralogist. ,vol. 91, pp. 115- 119 ,(2006) , 10.2138/AM.2006.1922
Darrell L. Gallup, Aluminum silicate scale formation and inhibition (2): scale solubilities and laboratory and field inhibition tests Geothermics. ,vol. 27, pp. 485- 501 ,(1998) , 10.1016/S0375-6505(98)00024-8
M. Gehlen, L. Beck, G. Calas, A.-M. Flank, A.J. Van Bennekom, J.E.E. Van Beusekom, Unraveling the atomic structure of biogenic silica: evidence of the structural association of Al and Si in diatom frustules Geochimica et Cosmochimica Acta. ,vol. 66, pp. 1601- 1609 ,(2002) , 10.1016/S0016-7037(01)00877-8
Suvasis Dixit, Philippe Van Cappellen, A.Johan van Bennekom, Processes controlling solubility of biogenic silica and pore water build-up of silicic acid in marine sediments Marine Chemistry. ,vol. 73, pp. 333- 352 ,(2001) , 10.1016/S0304-4203(00)00118-3
R. L. Parfitt, Allophane and imogolite: role in soil biogeochemical processes Clay Minerals. ,vol. 44, pp. 135- 155 ,(2009) , 10.1180/CLAYMIN.2009.044.1.135
Ph Ildefonse, RJ Kirkpatrick, B Montez, G Calas, AM Flank, P Lagarde, 27Al MAS NMR and Aluminum X-ray Absorption Near Edge Structure Study of Imogolite and Allophanes Clays and Clay Minerals. ,vol. 42, pp. 276- 287 ,(1994) , 10.1346/CCMN.1994.0420306