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Topic: Iron(II,III) oxide

Related Topics

Magnetite

Iron(III) oxide

Iron(II) oxide

Ferrous oxide

Iron oxide

Mineral

Hematite

Iron(III) chloride

Ferrite

Oxide

Rust

Iron

Copper(I) chloride

Sodium sulfate

Head of state

	Iron(III) oxide - Wikipedia, the free encyclopedia
		Iron(III) oxide — also known as ferric oxide, Hematite, red iron oxide, synthetic maghemite, colcothar, or simply rust — is one of several oxide compounds of iron, and is most notable for its ferromagnetic properties.
		The mineral form of ferric oxide is hematite; it is mined as the main ore of iron.
		Iron(III) oxide is often used in magnetic storage, for example in the magnetic layer of floppy disks.
	en.wikipedia.org /wiki/Iron(III)_oxide (403 words)

	Iron oxide - Wikipedia, the free encyclopedia
		Iron(III) oxide or ferric oxide (Fe) known in its natural state as hematite (also 'haematite'), but also purified for use as a coating in magnetic audio and computer media, where it is known as ferric oxide.
		This is the form of iron oxide most commonly seen on corroded iron and steel structures ranging from bridges to automobile bodies, and is extraordinarily destructive.
		Iron(II,III) oxide or ferrous ferric oxide (Fe), better known as the fl-coloured mineral magnetite or lodestone also seen on Mars.
	en.wikipedia.org /wiki/Iron_oxide (264 words)

	2000 Progress Report - DETECTION OF NITRIC OXIDE IN MICE BY ELECTRON PARAMAGNETIC RESONANCE TECHNIQUES (Site not responding. Last check: 2007-11-03)
		Altered synthesis or metabolism of nitric oxide, causing a change in nitric oxide levels, may produce a pathophysiological response.
		Therefore, it is desirable to accurately measure the concentration of nitric oxide in an organism.
		Taken together, this indicates that nitric oxide levels are underestimated in the nitric oxide literature.
	es.epa.gov /ncer/fellow/progress/97/feckerje00.html (466 words)

	Iron oxide - TheBestLinks.com - Colour, Hematite, Mineral, Oxide, ... (Site not responding. Last check: 2007-11-03)
		Iron oxide, Colour, Hematite, Iron, Mineral, Oxide, Rust...
		Iron (III) oxide or ferric oxide (Fe) known in its natural state as hematite or haematite, but also purified for use as a coating in magnetic audio and computer media, where it is known as ferric oxide.
		Iron (II, III) oxide or ferrous ferric oxide (Fe), better known as the fl-coloured mineral magnetite or lodestone.
	www.thebestlinks.com /Iron_oxide.html (209 words)

	Iron
		The oxide that is produced is crumbly and soft, giving no protection to the base metal, which eventually rusts away.
		Practically, it is always obtained from ores that are usually the oxides, and occasionally the carbonate, as low in sulphur and phosphorus as possible.
		Ferric oxide is the basis for many pigments of earthy colors, generally through forms of the minerals hematite and limonite, but also through the weathering of sandstones containing an iron cement, or of ferruginous shales.
	www.du.edu /~jcalvert/phys/iron.htm (8748 words)

	Decomposition of Dimethyl Methylphosphonate (DMMP) on Alumina-Supported Iron Oxide (Site not responding. Last check: 2007-11-03)
		This bond is observed to be extremely resistant to cleavage when DMMP is adsorbed on oxides such as alumina, magnesia, and lanthana.
		The phosphorus-methoxy bonds, which are the most readily cleaved on the other oxides, appear at least initially to remain intact on the alumina-supported iron oxide.
		The hypothesis proposed to account for the unusual activity of the iron oxide surface is an oxidation pathway involving the Fe(II)/Fe(III) redox couple.
	pubs.acs.org /cgi-bin/abstract.cgi/jpcbfk/1998/102/i38/abs/jp980690h.html (144 words)

	Results and Discussion (Site not responding. Last check: 2007-11-03)
		Fe(III) oxides and oxyhydroxides would have been affected by the Fe(III)-Fe(II) reduction even more than the silicate lattice Fe(III) because they are more directly exposed to the redox environment than the comparatively shielded structural iron.
		Likewise, the oxidizable silicate Fe(II) content in a given sediment horizon may be interpreted as an indicator of possible chemical overprint on the primary magnetic signal in the seafloor, which principally resides in iron oxide minerals, especially magnetite.
		As a matter of fact, both a spike in the concentration of solid-phase iron (i.e., goethite) and enhanced sediment magnetic intensities (attributable to magnetic mineral authigenesis associated with early diagenesis) have been found in the near-surface sediments of the Blake/Bahama Outer Ridge sediments (Schwartz et al., 1997).
	www.ga.gov.au /odp/publications/172_SR/chap_02/c2_4.htm (1115 words)

	UK Rocketry & Pyro forums > Iron Oxide - Red or Black (Site not responding. Last check: 2007-11-03)
		Iron(II,III) Oxide (Fe3O4) which is what you'll probably get from a pottery supplier if you order "Black Iron Oxide".
		Thermite based on iron(II,III) oxide burns more slowly, but the reaction is far more spectacular, with globules of moltern iron being noisily spat out.
		The fl and the red iron oxide looked as suspected, and showed all the characteristics of Iron Oxide, so I know that the majority of it is Iron Oxide.
	www.ukrocketry.co.uk /forum/lofiversion/index.php/t697-0.html (2909 words)

	Lack of Production of Electron-Shuttling Compounds or Solubilization of Fe(III) during Reduction of Insoluble Fe(III) ...
		oxides are microbially reduced in soils and sediments.
		metallireducens was grown with synthetic poorly crystalline Fe(III) oxide entrapped in alginate beads in the presence and absence of 50 µM AQDS.
		Role of hydrophobicity in adhesion of the dissimilatory Fe(III)-reducing bacterium Shewanella alga to amorphous Fe(III) oxide.
	aem.asm.org /cgi/content/full/66/5/2248 (2896 words)

	Iron Oxide Powders from READE
		Ochre is the major iron oxide in terms of tonnage.
		Iron oxide materials yield pigments that are nontoxic, nonbleeding, weather resistant, and lightfast.
		Natural iron oxides include a combination of one or more ferrous or ferric oxides, and impurities, such as manganese, clay, or organics.
	www.reade.com /Products/Categories/iron_oxide.html (286 words)

	Yellow Iron Oxide Powder / Pigment from READE
		yellow iron oxide, ferric oxide- yellow, synthetic/ natural yellow iron oxide, yellow ochre, hydrated ferric oxide, hydrated iron oxide, ferric oxide hydrate
		It is one kind of oxides with stable chemical properties.
		Iron oxide yellow is widely used in painting, scagliola and concrete due to its bright and pure color, good weather proof and high opacity, also can be used as colorant for ink, rubber, paper and so on.
	www.reade.com /Products/Oxides/yellow_iron_oxide.html (237 words)

	Metallomics II Posters - Biogeosciences [B]
		The goal of this study was to investigate the dissolution kinetics of the mineral, hausmannite, in the presence of desferrioxamine B (DFO-B), a common trihydroxamate siderophore, synthesized by fungi and bacteria, which may play a role in the reduction of soluble Mn (III) to Mn$^2^+$.
		Hausmannite, a mixed-valence Mn (II, III) oxide mineral with the formula Mn$_3$O$_4$, is a proposed intermediate in the oxidation of Mn$^2^+$ to thermodynamically stable MnO$_2$.
		Cultured isolates from both environments produce amorphous oxides followed by an array of minerals that undergo increasing crystallization over time (months to years) with live cultures but which cease when cultures are killed.
	www.agu.org /meetings/fm04/fm04-sessions/fm04_B53C.html (5177 words)

	PSRD: Gray hematite deposit in Terra Meridiani, Mars
		For this reason, the announcement in 2000 of the discovery of crystalline gray hematite near the Martian equator was, in a word, a watershed for planetary geologists and astrobiologists interested in unraveling the history of water and climate on Mars.
		rystalline gray hematite (the coarse-grained form of the iron oxide we call rust when it's powdery and red) was found by scientists analyzing remote sensing data gathered by the Thermal Emission Spectrometer (TES) instrument during the early (1997-1998 aerobraking) phase of the MGS mission.
		The TES instrument measures the infrared energy emitted by surface materials and by CO, water ice, dust, and water vapor in the atmosphere.
	www.psrd.hawaii.edu /Mar03/Meridiani.html (2150 words)

	Rust, Iron II or III
		Iron oxides with mixed or intermediate oxidation numbers exist, such as Fe3O4.
		Under some conditions the oxides are complex and mixed, but the usual state is the (III) state.
		In either case, O2 comes from the air, water is from humidity, and H+ is from the dissolved CO2 in water which forms H2CO3 (carbonic acid).
	www.newton.dep.anl.gov /askasci/chem03/chem03557.htm (501 words)

	Synthesis of Iron Oxide (Site not responding. Last check: 2007-11-03)
		To determine the percent composition and empirical formula of the synthesized iron oxide compound.
		This percent of iron and oxygen is known as the percent composition.
		Is your compound iron (II) oxide or iron (III) oxide.
	icn2.umeche.maine.edu /genchemlabs/Iron_Oxide/ironoxide.htm (1650 words)

	Learn more about Iron oxide in the online encyclopedia. (Site not responding. Last check: 2007-11-03)
		Iron (II) oxide (FeO) The powder in particular can cause explosions as it readily ignites.
		Iron (III) oxide, (Fe) known in its natural state as Haematite, but also purified for use as a coating in magnetic audio and computer media, where it is known as Ferric oxide.
		Iron (II, III) oxide (Fe), better known as the mineral Magnetite or lodestone.
	www.onlineencyclopedia.org /i/ir/iron_oxide.html (211 words)

	Iron chemistry
		Galvanised iron is the name given to iron that has been dipped into molten zinc (at about 450°C) to form a thin covering of zinc oxide.
		One level of rust prevention occurs through a purely mechanical method since it is more difficult for water and oxygen to reach the iron.
		The iron oxide coating formed has been found to be impervious to water and oxygen so no further corrosion can occur.
	wwwchem.uwimona.edu.jm:1104 /courses/iron.html (1172 words)

	Enhancing Metolachlor Destruction Rates with Aluminum and Iron Salts during Zerovalent Iron Treatment -- Satapanajaru ...
		to the iron oxide surface for reductive transformations.
		Effects of oxide coating and selected cations on nitrate reduction by iron metal.
		The role of oxides in reduction reactions at the metal–water interface.
	jeq.scijournals.org /cgi/content/full/32/5/1726 (4407 words)

	Lodestone - TheBestLinks.com - Magnetic field, Compass, Crystalline structure, China, ... (Site not responding. Last check: 2007-11-03)
		Lodestone, Magnetic field, Compass, Crystalline structure, China, Iron oxide...
		Magnetite, a magnetic mineral form of Iron (II, III) oxide, one of several iron oxides.
		A piece of magnetized magnetite that was used as an early form of magnetic compass.
	www.thebestlinks.com /Lodestone.html (194 words)

	Biomagnetism
		Magnetite is a fl mineral form of iron oxide that crystallizes in the cubic or isometric system, namely all crystals which have their crystallographic axes of equal length at 90 degrees to each other.
		It is a mixed Iron (II) Iron (III) oxide, Fe3O4, and is one of the major ores of iron that is strongly magnetic.
		Some varieties, known as lodestone, are natural magnets; these were used as compasses in the ancient world.
	www.affs.org /html/biomagnetism.html (1644 words)

	Efficacy of Treatment With the Iron (III) Complex of Diethylenetriamine Pentaacetic Acid in Mice and Primates ...
		Thiemermann, and J.R. Vane (1993) Interleukin-1 contributes to the induction of nitric oxide synthase by endotoxin in vivo.
		Perretti, and J.R. Vane (1993) Role of tumour necrosis factor in the induction of nitric oxide synthase in a rat model of endotoxin shock.
		Iron chelates bind nitric oxide and decrease mortality in an experimental model of septic shock.
	www.jci.org /cgi/content/full/98/1/192 (4410 words)

	#1 Site For Learning Chemistry
		Fe is a reactive metal and is not found in free state in nature.
		Fe ores are in the form of compounds of oxides, sulphides and carbonates.
		After this the ore is heated or calcined in insufficient air so that water is removed and pure oxide of the metal remains behind.
	home.att.net /~cat6a/metals-XIII.htm (1024 words)

	Properties of Iron Oxide (Site not responding. Last check: 2007-11-03)
		There are two different isotopes of iron ions, Fe and Fe thus causing two different possible iron oxide compounds.
		These two compounds are ferrous and ferric oxide, or iron (II) and iron (III) oxide.
		Ferric Oxide- Fe This page will discuss the compound ferrous oxide, not ferric oxide.
	web1.caryacademy.org /chemistry/rushin/StudentProjects/CompoundWebSites/2003/ironoxide/properties.htm (48 words)

	IB Chemistry notes: oxidation and reduction
		Oxidation numbers in names of compounds are represented by Roman numerals, eg iron (II) oxide, iron (III) oxide.
		Where there is any doubt about the oxidation state of an element within a compound it is stated using Roman numerals immediately after the ambiguous element.
		As stated above, for the purposes of oxidation and reduction the oxidation number can be thought of as the apparent ionic charge of an atom within a compound.
	ibchem.com /IB/ibnotes/full/red_htm/10.1.htm (1048 words)

	Shewanella oneidensis MR-1 Uses Overlapping Pathways for Iron Reduction at a Distance and by Direct Contact under ...
		from Shewanella oneidensis MR-1 to iron oxides (48).
		Bacterial manganese reduction and growth with manganese oxide as the sole electron acceptor.
		Microbial reduction of crystalline iron(III) oxides: influence of oxide surface area and potential for cell growth.
	aem.asm.org /cgi/content/full/71/8/4414 (9681 words)

	Untitled (Site not responding. Last check: 2007-11-03)
		GRs have mainly been identified as corrosion products of iron; recent results indicate that they also may form during reductive iron(III) oxide dissolution in non-acid, anaerobic soils and sediments.
		The sulphate and carbonate anionic forms of GR are expected to be the most ubiquitous in Nature.
		Hansen, H.C.B. and C.B. Koch: Iron(IV) in layered cobalt-iron oxide formed by electrochemical oxidation.
	www.kemi.kvl.dk /~haha/gr.htm (312 words)

	b42c in fm03
		AB: Recent experimental studies of synthetic and natural Fe(III) oxide reduction permit development of conceptual and quantitative models of enzymatic Fe(III) oxide reduction at circumneutral pH that can be compared to and contrasted with established models of abiotic mineral dissolution.
		Despite differences in initial reduction and sequestration, subsequent Fe(II) generation and accumulation within the three Fe oxides reaches an equivalent steady-state (300 h), where similar aqueous Fe(II) concentrations, cell colonization, and Fe(III) reduction rates are supported.
		Given the greater abundance of crystalline iron oxides in the environment, reduction of phases such as goethite and hematite may impart an equivalent or potentially greater impact on sustained Fe(II) generation and sequestration.
	www.agu.org /cgi-bin/SFgate/SFgate?&listenv=table&multiple=1&range=1&directget=1&application=fm03&database=/data/epubs/wais/indexes/fm03/fm03&maxhits=200&="B42C" (2299 words)

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