Iron silicate glass

WATER PURIFICATION AND CHARACTERIZATION OF RECYCLED IRON-SILICATE GLASS... 

Water-Purifying Abiiity of Recycled Iron Silicate Glass... 

Iron Silicate Glass Prepared by Recycling Coal Ash... 

Figure 6-9. Photoelectron peaks from sodium iron silicate glasses 0.3Na2OxFe2Os (0.7— x)Si02 (a) Fe 2p and (b) Fe 3p (Gee, 2000).

The relative amounts of each oxidation state can be quantified but the accuracy with which this can be done depends on the intensity of the particular photoelectron peak, balanced by the resolution of the contribution from the different oxidation states, and also the nature of the backgroimd at that point in the spectrum. For example. Figure 6-9 shows Fe 2p and Fe 3p spectra from a series of sodium iron silicate glasses. The intensity of the Fe 2p photoelectron peak is much greater than that of the Fe 3p. However, the former lies on a pronoimced edge from the inelastic scattering background and there are also... 

Cerium(IV) oxidizes ferrous ion to ferric and the cerium ions are stable under the conditions of a molten silicate—glass bath. Furthermore, cerium itself has no absorption ia the visible region. Economical additions of cerium, as cerium concentrate, enable the efficient use of raw materials containing trace quantities of iron (26). 

Belyustin and co-workers (4) have observed three-line spectra in their alkali (10-20% )-iron (1-15% )-silicate glasses with the same interpre-... 

SEM electron backscatter image of lunar soil particles, showing minute beads of metallic iron (white) in silicate glass coatings. The iron beads modify the spectra, accounting for the phenomenon of space weathering. 

For an accurate in situ 234U/238U and 230Th/232Th isotope microanalysis of silicate glasses and iron oxides, an excimer laser ablation system (HelEx, Lambda Physik Compex llOi ArF ... 

Fox, K. E., Furukawa, T. White, W. B. (1982) Transition metal ions in silicate melts. Part 2 Iron in sodium silicate glasses. Phys. Chem. Glasses, 23,169-78. 

Figure 5.7 Three-dimensional drawing of the experimental system used to assess the catalytic properties of the amorphous iron silicate smokes. The (smoke) catalyst is contained in the bottom of a quartz finger (attached to a 2L Pyrex bulb) that can be heated to a controlled temperature. A Pyrex tube brings reactive gas to the bottom of the finger. The gas then passes through the catalyst into the upper reservoir of the bulb and flows through a copper tube at room temperature to a glass-walled observation cell (with ZnSe windows) in an P iiR spectrometer. From there, a closed-cycle metal bellows pump returns the sample via a second 2L bulb and the Pyrex tube to the bottom of the catalyst finger to start the cycle over again (Hill and Nuth 2003).

Swarfs EL, Cook IM. Photosensitivity of reduced silicate glasses containing iron. 7th International Conference on Glass, Jime 26-July 3. 1965. 

Klock and Stadermann, 1994). They are miner-alogically unequilibrated in that they contain nanometer-sized inclusions of FeNi alloy (kamacite) and iron-rich sulfide (pyrrhotite) embedded in oxygen-rich, low-iron magnesium silicate glass. 

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