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Magnetite/maghemite

Ferrihydrite Bernalite Hematite Magnetite Maghemite Wdstite... [Pg.6]

Fig. 7.11 Room temperature specific magnetization curves of magnetite, maghemite, hematite, goethite, and ferrihydrite (from Coey, 1988, with permission). Fig. 7.11 Room temperature specific magnetization curves of magnetite, maghemite, hematite, goethite, and ferrihydrite (from Coey, 1988, with permission).
Fig. 12.28 Dissolution-time curves for magnetite, maghemite and hematite in EDTA at 30 °C and pH 3 in the presence or absence of Fe and UV light ( = 254 nm) (Litter Blesa, 1992, with permission). Fig. 12.28 Dissolution-time curves for magnetite, maghemite and hematite in EDTA at 30 °C and pH 3 in the presence or absence of Fe and UV light ( = 254 nm) (Litter Blesa, 1992, with permission).
Fe(OH)2 Magnetite Goethite, Lepidocrocite, Magnetite, Maghemite Oxidation N2 Alkaline solution Alkaline solution... [Pg.366]

The industrial dust deposited in the metropolitan area of Shanghai consisted of high-coercivity (hematite) and low-coercivity (magnetite/maghemite) particles, usually < 10 pm in size. Four different dust sources could be distinguished on the basis of magnetic properties (Shu et al. 2000). Given previously reported links between... [Pg.549]

Swaddle, T.W. Oltmann, P. (1980) Kinetics of the magnetite-maghemite-hematite transformation, with special reference to hydrothermal systems. Can. J. Chem. 58 1763-1772 Swallow, K.C. Hume, D.N. Morel, F.M.M. (1980) Sorption of copper and lead by hydrous ferric oxide. Environ. Sci. Tech. 14 1326-1331... [Pg.633]

Raman chemical imaging can be employed to access the homogeneity and the structural stability in terms of oxidation rates, onset of hematite, and organic contamination of as-precipitate and oxidized iron oxide samples. Oxidation-related Raman features have been established by comparative study of bulk oxides and nanoparticles attained in two different oxidation states, suggesting that the solid nanophase synthesized had a mixed magnetite-maghemite composition [52]. [Pg.402]

Corrosion science magnetite, maghemite, goethite, lepidocrocite, wiistite and green rusts... [Pg.1]

Corrosion potentials of hematite, magnetite, maghemite, and roasted gold ore indicated that they can act as a cathode and could potentially or at least temporarily promote the dissolution of gold in galvanic coupling. [Pg.11]

FI G U RE 9.8 The crystalline structure of (a) goethite, (b) hematite, and (c) magnetite/maghemite. (Reprinted from Bigham, J. M. et al., Soil Mineralogy with Environmental Applications, Soil Science Society of America, Madison, WI, 323-366,2002, with kind permission.)... [Pg.309]

R.E. Vandenberghe, J.J. Hus, E. De Grave, Evidence from Mossbauer spectroscopy of neoformation of magnetite/maghemite in the soils of loess/palaeosol sequences in China. Hyp. Interact. 117, 359-369 (1998)... [Pg.182]

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See also in sourсe #XX -- [ Pg.353 , Pg.420 , Pg.421 ]



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Distorted spinels, magnetite and maghemite

Maghemite

Maghemites

Magnetite

Magnetite and maghemite

Magnetite transformation into maghemite

Magnetite/maghemite formation

Magnetite/maghemite nanoparticles

Magnetite/maghemite particles

Oxidation of magnetite to maghemite

Oxidation of magnetite to maghemite or hematite

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