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Iron oxides and oxyhydroxides are widespread in nature and play an important role in many geological and biological processes. They are used as iron ores...10 KB (967 words) - 03:38, 19 August 2024
Iron(III) oxide or ferric oxide is the inorganic compound with the formula Fe2O3. It is one of the three main oxides of iron, the other two being iron(II)...22 KB (2,072 words) - 17:04, 6 July 2024
Iron(II,III) oxide, or black iron oxide, is the chemical compound with formula Fe3O4. It occurs in nature as the mineral magnetite. It is one of a number...23 KB (2,161 words) - 11:15, 5 June 2024
Iron(III) oxide-hydroxide or ferric oxyhydroxide is the chemical compound of iron, oxygen, and hydrogen with formula FeO(OH). The compound is often encountered...11 KB (1,227 words) - 00:12, 10 June 2024- 30–60% aluminium oxide (Al2O3), the rest being a mixture of silica, various iron oxides, and titanium dioxide. The aluminium oxide must be further purified...12 KB (1,630 words) - 04:09, 11 June 2024
inorganic compounds, in which carbonates, oxides, and hydroxides of calcium, silicon, magnesium, aluminium, and iron predominate. By contrast, quicklime specifically...23 KB (2,231 words) - 10:20, 8 August 2024
Rust (redirect from Rust (iron oxide))Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in the catalytic presence of water or air moisture. Rust...28 KB (3,118 words) - 11:57, 5 September 2024
finely divided iron bound to an iron oxide carrier containing promoters possibly including aluminium oxide, potassium oxide, calcium oxide, potassium hydroxide...68 KB (8,103 words) - 22:59, 20 August 2024
Nitric oxide (nitrogen oxide or nitrogen monoxide) is a colorless gas with the formula NO. It is one of the principal oxides of nitrogen. Nitric oxide is...31 KB (2,970 words) - 14:41, 2 September 2024
Thermite (redirect from Thermite process)bismuth(III) oxide, boron(III) oxide, silicon(IV) oxide, chromium(III) oxide, manganese(IV) oxide, iron(III) oxide, iron(II,III) oxide, copper(II) oxide, and...50 KB (5,812 words) - 03:40, 5 September 2024- Redox (redirect from Oxidation process)the rusting of iron, the oxidation state of iron atoms increases as the iron converts to an oxide, and simultaneously, the oxidation state of oxygen...37 KB (3,575 words) - 19:47, 26 August 2024
protection than red oxide (rust) Fe2O3. Modern industrial approaches to forming black oxide include the hot and mid-temperature processes described below...11 KB (1,240 words) - 07:49, 12 August 2024
its oxide layer. Iron forms various oxide and hydroxide compounds; the most common are iron(II,III) oxide (Fe3O4), and iron(III) oxide (Fe2O3). Iron(II)...150 KB (17,056 words) - 12:22, 24 August 2024
impurities of iron oxides and hydroxides, quartz and clay minerals. Bauxites are found in laterites. Bauxite is typically purified using the Bayer process: Al2O3...34 KB (3,495 words) - 21:26, 30 August 2024
Iron oxide nanoparticles are iron oxide particles with diameters between about 1 and 100 nanometers. The two main forms are composed of magnetite (Fe3O4)...25 KB (2,968 words) - 11:37, 20 February 2024
refers to solid-state processes which reduce iron oxides to metallic iron at temperatures below the melting point of iron. Reduced iron derives its name from...10 KB (1,353 words) - 11:52, 4 September 2024- Bluing (steel) (section Processes)reaction with iron on the surface selectively forming magnetite (Fe 3O 4), the black oxide of iron. In comparison, rust, the red oxide of iron (Fe 2O 3),...18 KB (2,470 words) - 07:22, 9 July 2024
impurities from the iron by oxidation with air being blown through the molten iron. The oxidation also raises the temperature of the iron mass and keeps it...35 KB (4,367 words) - 20:29, 26 August 2024- Iron oxide adsorption is a water treatment process that is used to remove arsenic from drinking water. Arsenic is a common natural contaminant of well...2 KB (320 words) - 18:21, 26 October 2023
and coal. Fe2O3(s) + 3 CO(g) → 2 Fe(s) + 3 CO2(g) Hall–Héroult process – Aluminium oxide (Al2O3) is smelted with coke (C) in a high-temperature electrolysis...12 KB (1,302 words) - 14:42, 30 August 2024
- layer of the black or magnetic oxide of iron (Fe3O4), and, as is well known, this oxide does not undergo any further oxidation on exposure to air or water—proved
- light gas. The system composed of steam and iron has changed into a system composed of magnetic oxide of iron and hydrogen. When nitre (potassium nitrate)
- for iron (the process is called "galvanizing"), it oxidizes to form a protective layer of zinc oxide (ZnO) that protects the iron from oxidation, also