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Magnesium Silicate Precipitation
CORROSION 1993, 1993Abstract Studies of magnesium silicate precipitation under alkaline conditions support a bimolecular mechanism rather than co-precipitation/adsorption. The rate of spontaneous nucleation is similar to the rate of particle growth. The activation energy is about 15 KCAL/mole.
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Magnesium and calcium silicate hydrates
Cement and Concrete Research, 2015The structure and chemistry of magnesium silicate hydrates (M-S-H) is significantly different from calcium silicate hydrates (C-S-H), although both phases are poorly crystalline and have a variable chemical composition. The molar Ca/Si ratio in synthetic C-S-H varies from approximately 0.7 to 1.5 and the Mg/Si ratio in M-S-H from 0.7 to 1.3.
B. Lothenbach +4 more
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Dissolution kinetics of magnesium silicates
Geochimica et Cosmochimica Acta, 1972Abstract Kinetic dissolution experiments on serpentine, forsterite and enstatite over a wide pH range at 25°C show that there is an initial rapid exchange of surface magnesium ions with hydrogen ions followed by a longer period of hydrogen exchange and extraction of internal magnesium and silicon, with the amount extracted proportional to t 1 2
Robert W Luce +2 more
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Disperse Layered Silicates in Magnesium Silicate Rocks
Glass Physics and Chemistry, 2004This paper reports on the results of experimental investigations aimed at improving the methods and optimizing the physicochemical parameters of the processes of preparing disperse fluorotetrasilicic mica (Na-fluorotetrasilicic mica, Na-fluorotaeniolite) from magnesium silicate rocks (serpentinite, dunite) under pyrogenic conditions from melts.
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Magnesium cobalt silicate materials for reversible magnesium ion storage
Electrochimica Acta, 2012Abstract We report the formation of MgCoSiO 4 materials by a high-temperature solid-state reaction, a molten salt method and a mixed solvothermal approach. The preparation process had a profound effect on the morphology and particle size of the materials.
Yupei Zheng +5 more
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Mesoporous magnesium manganese silicate as cathode materials for rechargeable magnesium batteries
Chemical Communications, 2010Mesoporous magnesium manganese silicate materials were prepared using mesoporous silica SBA-15 or KIT-6 as both template and silicon source. The materials exhibited improved electrochemical intercalation and deintercalation toward Mg(2+), compared with the corresponding bulk material.
Yanna, NuLi +3 more
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Coordination changes in magnesium silicate glasses
Europhysics Letters (EPL), 2004Glasses made from the magnesium silicate minerals enstatite (MgSiO3) and forsterite (Mg2SiO4) and three intermediate compositions can be considered as analogues of quenched melts from the Earth and Lunar mantle. Combined neutron and X-ray diffraction data show an abrupt change in glass structure in the narrow compositional range 38% SiO2 to 33% SiO2 ...
M. C Wilding +3 more
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Structural Irregularities in Hydrous Magnesium Silicates
Clays and clay minerals (National Conference on Clays and Clay Minerals), 1954AbstractThe crystal structures of chrysotile, antigorite, attapulgite, sepiolite, vermiculite, and montmorillonite are discussed in the light of the degree to which they resemble chlorite.The proposal is advanced that the perfection of articulation between tetrahedrally and octahedrally coordinated layers is temperature-sensitive, and that the several ...
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