Manganese Cobalt Oxide is a highly insoluble thermally stable source suitable for glass, optic and ceramic applications. Oxide compounds are not conductive to electricity. However, certain perovskite structured oxides are electronically conductive finding application in the cathode of solid oxide fuel cells and oxygen generation systems. They are compounds containing at least one oxygen anion and one metallic cation. They are typically insoluble in aqueous solutions (water) and extremely stable making them useful in ceramic structures as simple as producing clay bowls to advanced electronics and in light weight structural components in aerospace and electrochemical applications such as fuel cells in which they exhibit ionic conductivity. Metal oxide compounds are basic anhydrides and can therefore react with acids and with strong reducing agents in redox reactions. Manganese Cobalt Oxide is also available in pellets, pieces, powder, sputtering targets, tablets, and nanopowder (from American Elements' nanoscale production facilities). See Nanotechnology for more nanotechnology applications information. High purity, submicron and nanopowder forms may be considered. Additional technical, research and safety (MSDS) information is available.
Manganese is a Block D, Group 7, Period 4 element. The number of electrons in each of Manganese's shells is 2, 8, 13, 2 and its electronic configuration is [Ar] 3d5 4s2. In its elemental form manganese's CAS number is 7439-96-5. The manganese atom has a radius of 136.7.pm and it's Van der Waals radius is 200.pm. Manganese in excess is toxic, in particular the inhalation of manganese in powder or dust form. Manganese metal is a key component of aluminumalloys. Manganese oxide is used in dry cell batteries. Manganese is used in steel production to remove sulfur and oxygen. Manganese is the colorant in natural amethyst stones and is used in glass and ceramics to also create the amethyst color. It is used like the element cerium to "decolorize" glass by offsetting the green from impurities of ferric ions. Permanganate is a powerful oxidizing agent and is used in medicine. It is added as a nutritional supplement for both human and animal consumption. Recently, the oxide in the form of various perovskite structures have demonstrated applications in oxygen generation and solid oxide fuel cells. Manganese was first discovered by Johann Gahn in 1774. The name Manganese originates from the Latin word mangnes meaning magnet. See Manganese research below.
Cobalt is a Block D, Group 9, Period 4 element. The number of electrons in each of Cobalt's shells is 2, 8, 15, 2 and its electronic configuration is [Ar] 3d7 4s2. In its elemental form cobalt's CAS number is 7440-48-4. The cobalt atom has a radius of 125.3.pm and it's Van der Waals radius is 200.pm. Cobalt and its compounds are somewhat toxic by skin contact and moderately toxic by inhalation. Cobalt has a metallic permeability two thirds that of iron. It exists as a mixture of two allotropes over a wide temperature range. The transformation is slow and accounts in part for the wide variation in the physical properties of cobalt. It is alloyed with iron, nickel and other metals to make Alnico, an alloy of unusual magnetic strength with many important uses. Samarium-cobalt is one of the highest strength magnet alloys known. Cobalt compounds produce a brilliant and permanent blue color in ceramic glazes, glass, pottery, tiles, and enamels. Co-60 is useful as a gamma ray source. Toxicity of cobalt and its compounds are mild by skin contact and moderate by ingestion. Cobalt is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Cobalt was first discovered by George Brandt in 1737. The origin of the word Cobalt comes from the German word 'Kobalt or Kobold' which translates as "goblin", "elf" or "evil spirit". See Cobalt research below.
PACKAGING SPECIFICATIONS FOR BULK & RESEARCH QUANTITIES
Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.
Mn(II) removal from groundwater with manganese
oxide-coated filter media. Piispanen JK, Sallanko JT. J Environ Sci Health A Tox Hazard Subst Environ Eng.
2010 Nov;45(13):1732-40. PubMed PMID: 20924918.
Decolourization of synthetic wastewater
containing azo dyes by immobilized Phanerochaete chrysosporium in a continuously
operated RBC reactor. Pakshirajan K, Sivasankar A, Sahoo NK. Appl Microbiol Biotechnol. 2010 Oct 6. [Epub ahead of
print] PubMed PMID: 20924578.
A fast black-blood sequence for four-dimensional cardiac
manganese-enhanced MRI in mouse. Lefrançois W, Miraux S, Calmettes G, Pourtau L, Franconi JM, Diolez P,
Thiaudière E. NMR Biomed. 2010 Oct 6. [Epub ahead of print]
PubMed PMID: 20925127.
Functional TRPV4 channels are expressed in mouse skeletal muscle and can modulate
resting Ca(2+) influx and muscle fatigue. Pritschow BW, Lange T, Kasch J, Kunert-Keil C, Liedtke W, Brinkmeier H. Pflugers Arch. 2010 Oct 6. [Epub ahead
of print] PubMed PMID: 20924600.
Effects of Aluminum Exposure on Bone
Mineral Density, Mineral, and Trace Elements in Rats. Li X, Hu C, Zhu Y, Sun H, Li Y, Zhang Z. Biol Trace Elem Res. 2010
Oct 1. [Epub ahead of print] PubMed PMID: 20886309.
An artificial model of photosynthetic
photosystem II: visible-light-derived O(2) production from water by a
di-µ-oxo-bridged manganese dimer as an oxygen evolving center. Yagi M, Toda M, Yamada S, Yamazaki H. Chem Commun
(Camb). 2010 Oct 1. [Epub ahead of print] PubMed PMID: 20890491.
The unexpected role of
pyridine-2-carboxylic acid in manganese based oxidation catalysis with
pyridin-2-yl based ligands. Pijper D, Saisaha P, de Boer JW, Hoen R, Smit C, Meetsma A, Hage R, van
Summeren RP, Alsters PL, Feringa BL, Browne WR. Dalton Trans. 2010 Oct 1. [Epub ahead of print]
PubMed PMID: 20886164.
Dieckol rescues mice from lethal irradiation by accelerating hemopoiesis and
curtailing immunosuppression. Park E, Ahn G, Yun JS, Kim MJ, Bing SJ, Kim DS, Lee J, Lee NH, Park JW, Jee Y. Int J Radiat Biol. 2010 Oct;86(10):848-59. PubMed
PMID: 20883140.
Manganese enhancement in non-CNS organs. Lee LW, So PW, Price AN, Parkinson JR, Larkman DJ, Halliday J, Poucher SM,
Pugh JA, Cox AG, McLeod CW, Bell JD. NMR
Biomed. 2010 Oct;23(8):931-8. PubMed PMID: 20878971.
Fractionated manganese injections: effects on MRI contrast enhancement
and physiological measures in C57BL/6 mice. Grünecker B, Kaltwasser SF, Peterse Y, Sämann PG, Schmidt MV, Wotjak CT,
Czisch M. NMR Biomed. 2010 Oct;23(8):913-21.
PubMed PMID: 20878969.
Micro- to Macroscopic Observations of
MnAlPO-5 Nanocrystal Growth in Ionic-Liquid Media. Ng EP, Itani L, Sekhon SS, Mintova S. Chemistry. 2010 Sep 30. [Epub
ahead of print] PubMed PMID: 20886470.
Studies of magnetic
properties and HFEPR of octanuclear manganese single-molecule magnets. Wu CC, Datta S, Wernsdorfer W, Lee GH, Hill S, Yang EC. Dalton
Trans. 2010 Sep 30. [Epub ahead of print] PubMed PMID: 20886147.
Case
Study on a Rare Effect: The Experimental and Theoretical Analysis of a
Manganese(III) Spin-Crossover System. Wang S, Ferbinteanu M, Marinescu C, Dobrinescu A, Ling QD, Huang W. Inorg Chem. 2010 Sep 30. [Epub ahead of
print] PubMed PMID: 20883036.
Distribution of (210)Pb and (210)Po in
boreal forest soil. Vaaramaa K, Aro L, Solatie D, Lehto J. Sci Total Environ. 2010 Sep 30. [Epub ahead of print] PubMed
PMID: 20888619.
The effect of hydrogen peroxide-induced oxidative stress on
leukocytes depends on age and physical training in healthy human subjects
carrying the same genotypes of antioxidant enzymes' gene polymorphisms. Miranda-Vilela AL, Alves PC, Akimoto AK, Pereira LC, Nazaré Klautau-Guimarães
MD, Grisolia CK. Am J Hum
Biol. 2010 Sep 28. [Epub ahead of print] PubMed PMID: 20878976.
Magnetothermal Studies of a
Series of Coordination Clusters Built from Ferromagnetically Coupled {Mn(II)
(4)Mn(III) (6)} Supertetrahedral Units. Nayak S, Evangelisti M, Powell AK, Reedijk J. Chemistry. 2010 Sep 28. [Epub ahead of
print] PubMed PMID: 20878813.
In Vivo
Measurement of Brain GABA Concentrations by Magnetic Resonance Spectroscopy in
Smelters Occupationally Exposed to Manganese. Dydak U, Jiang YM, Long LL, Zhu H, Chen J, Li WM, Edden RA, Hu S, Fu X, Long
Z, Mo XA, Meier D, Harezlak J, Aschner M, Murdoch JB, Zheng W. Environ Health Perspect. 2010 Sep
28. [Epub ahead of print] PubMed PMID: 20876035.
EFFECTIVE
DOSE OF MINERS DUE TO NATURAL RADIOACTIVITY IN A MANGANESE MINE IN HUNGARY.
Kávási N, Vigh T, Sorimachi A, Ishikawa T, Tokonami S, Hosoda M. Radiat Prot Dosimetry. 2010 Sep 27. [Epub ahead of print] PubMed PMID: 20876071.
Manganese and trace-metal
mobility under reducing conditions following in situ oxidation of TCE by KMnO(4):
A laboratory column experiment. Loomer DB, Al TA, Banks VJ, Parker BL, Mayer KU. J Contam Hydrol. 2010 Aug 26. [Epub ahead of
print] PubMed PMID: 20889229.
[Endemic and biogeochemical features of the territory of Chuvash Republic].
Vestn Ross Akad Med Nauk. 2010;(8):40-6. Russian. PubMed PMID: 20922843.
Tetra-kis(3-cyano-pyridine-?N)bis-(thio-cyanato-?N)cobalt(II) 1,4-dioxane disolvate.
Diehr S, Wöhlert S, Boeckmann J, Näther C.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1898. Epub 2011 Nov 30.
PMID:
22199656
[PubMed - as supplied by publisher]
Bis(2,4-dioxo-5,5-diphenyl-imidazol-idin-ido-?N)bis-(propane-1,3-diamine-?N,N')cobalt(II).
Hu X, Jiang Q, Wang D, Liu H.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1885. Epub 2011 Nov 30.
PMID:
22199646
[PubMed - as supplied by publisher]
Poly[aqua-{?(3)-5-[(pyridin-2-ylmeth-yl)amino]-isophthalato-?N,N':O,O:O}cobalt(II)].
Zhu XH, Cheng XC.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1862. Epub 2011 Nov 30.
PMID:
22199630
[PubMed - as supplied by publisher]
catena-Poly[[[cis-aqua-dibromido-cobalt(II)]-?-(pyrazine-2-carb-oxy-lic acid)-?N,O:N] monohydrate].
Dares C, Fournier R, Lever AB.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1798-m1799. Epub 2011 Nov 23.
PMID:
22199583
[PubMed - as supplied by publisher]
Poly[di-?(2)-aqua-?(5)-(pyridine-2,6-dicarboxyl-ato)-?(3)-(pyridine-2,6-dicarboxyl-ato)-cobalt(II)disodium].
Boyko AN, Golenya IA, Izotova YA, Haukka M, Prisyazhnaya EV.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1782-m1783. Epub 2011 Nov 19.
PMID:
22199572
[PubMed - as supplied by publisher]
Diaqua-bis-(pyridine-2-sulfonato-?N,O)cobalt(II).
Li ZS, Ng SW.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1781. Epub 2011 Nov 19.
PMID:
22199571
[PubMed - as supplied by publisher]
Bis[tris-(ethyl-enediamine-?N,N')cobalt(III)] octa-kis-?-(3)-oxido-hexa-deca-?(2)-oxido-tetra-deca-oxido-?(12)-tetra-oxo-silicato-octa-molybdenum(VI)hexa-vanadium(IV,V) hexa-hydrate.
Lu YK, Tian MM, Xu SG, Lü RQ, Liu YQ.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1776-m1777. Epub 2011 Nov 19.
PMID:
22199568
[PubMed - as supplied by publisher]
Tetra-aqua-bis-(2-{[5-(pyridin-4-yl)-1,3,4-oxadiazol-2-yl]sulfan-yl}acetato)-cobalt(II) monohydrate.
Yang GR, Li GT.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1746-m1747. Epub 2011 Nov 12.
PMID:
22199545
[PubMed - as supplied by publisher]
Tetra-aqua-bis-[3-(pyridin-4-yl)benzoato-?N]cobalt(II).
Wang HR, Li GT.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1743. Epub 2011 Nov 12.
PMID:
22199542
[PubMed - as supplied by publisher]
Poly[[tetra-aqua-(?(4)-imidazole-4,5-dicarboxyl-ato)(?(3)-imidazole-4,5-dicarboxyl-ato)-?(3)-sulfato-?(2)-sulfato-cobalt(II)digadolinium(III)] monohydrate].
Zhu LC.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1741-m1742. Epub 2011 Nov 12.
PMID:
22199541
[PubMed - as supplied by publisher]
Hexaaqua-cobalt(II) bis-(5-acetyl-2-hy-droxy-benzoate) dihydrate.
Han LJ, Yang SP, Fu LL, Gao HL.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1733. Epub 2011 Nov 9.
PMID:
22199535
[PubMed - as supplied by publisher]
Dichlorido[(4E,11E)-5,7,12,14-tetra-benzyl-7,14-dimethyl-1,4,8,11-tetra-aza-cyclo-tetra-deca-4,11-diene]cobalt(III) perchlorate.
Roy TG, Hazari SK, Barua KK, Ng SW, Tiekink ER.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1722-m1723. Epub 2011 Nov 9.
PMID:
22199529
[PubMed - as supplied by publisher]
{1,2-Bis[(3,5-dimethyl-1H-pyrazol-1-yl-?N)meth-yl]benzene}-dichloridozinc(II).
Guzei IA, Spencer LC, Budhai A, Darkwa J.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1715-m1716. Epub 2011 Nov 9.
PMID:
22199525
[PubMed - as supplied by publisher]
catena-Poly[[bis-(2,4-dichloro-benzoato)bis-(methanol-?O)cobalt(II)]-?-4,4'-bipyridine-?N:N'].
Hyun MY, Kim PG, Kim C, Kim Y.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1705. Epub 2011 Nov 9.
PMID:
22199519
[PubMed - as supplied by publisher]
Bis(pentane-2,4-dionato-?O,O')(1,10-phenanthroline-?N,N')cobalt(II).
Perdih F.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1697. Epub 2011 Nov 5.
PMID:
22199513
[PubMed - as supplied by publisher]
Diaqua-bis-(dihydrogen 3-aza-niumyl-1-hy-droxy-propyl-idene-1,1-di-phos-phon-ato-?O,O')cobalt(II).
Tsaryk NV, Dudko AV, Kozachkova AN, Pekhnyo VI.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1694. Epub 2011 Nov 5.
PMID:
22199511
[PubMed - as supplied by publisher]
Tetra-aqua-bis-{3-carb-oxy-5-[(4-carb-oxy-phen-yl)diazen-yl]benzoato-?O}cobalt(II) dihydrate.
Bai L, Zhao J.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1689. Epub 2011 Nov 5.
PMID:
22199506
[PubMed - as supplied by publisher]
Tetra-aqua-bis-(2-methyl-1H-imidazole-?N)cobalt(II) naphthalene-1,5-disulfonate.
Jin Y.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1686. Epub 2011 Nov 5.
PMID:
22199503
[PubMed - as supplied by publisher]
Diaqua-bis-(dimethyl sulfoxide-?O)bis(saccharinato-?N)cobalt(II).
Potwana FS, Van Zyl WE.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1667-m1668. Epub 2011 Nov 5.
PMID:
22199492
[PubMed - as supplied by publisher]
Pulmonary toxicity after exposure to military-relevant heavy metal tungsten alloy particles.
Roedel EQ, Cafasso DE, Lee KW, Pierce LM.
Toxicol Appl Pharmacol. 2011 Dec 16. [Epub ahead of print]
PMID:
22198552
[PubMed - as supplied by publisher]
Recent Research & Development for Oxides
Andrographolide Inhibits PI3K/AKT-Dependent NOX2 and iNOS Expression Protecting Mice against Hypoxia/Ischemia-Induced Oxidative Brain Injury.
Chern CM, Liou KT, Wang YH, Liao JF, Yen JC, Shen YC.
Planta Med. 2011 Apr 21. [Epub ahead of print]
PMID:
21512969
[PubMed - as supplied by publisher]
Reexamination of the ORAC assay: effect of metal ions.
Nkhili E, Brat P.
Anal Bioanal Chem. 2011 May;400(5):1451-1458. Epub 2011 Apr 6.
PMID:
21512895
[PubMed - as supplied by publisher]
Muscle intracellular oxygenation during exercise: optimization for oxygen transport, metabolism, and adaptive change.
Wagner PD.
Eur J Appl Physiol. 2011 Apr 22. [Epub ahead of print]
PMID:
21512800
[PubMed - as supplied by publisher]
CuCl-catalyzed aerobic oxidation of 2,3-allenols to 1,2-allenic ketones with 1:1 combination of phenanthroline and bipyridine as ligands.
Gao S, Liu Y, Ma S.
Beilstein J Org Chem. 2011 Apr 7;7:396-403.
PMID:
21512599
[PubMed - as supplied by publisher]
Mitochondrial Structure and Function Are Disrupted by Standard Isolation Methods.
Picard M, Taivassalo T, Ritchie D, Wright KJ, Thomas MM, Romestaing C, Hepple RT.
PLoS One. 2011 Mar 28;6(3):e18317.
PMID:
21512578
[PubMed - as supplied by publisher]
Oxidative stress and endothelial dysfunction in hypertension.
Schulz E, Gori T, Münzel T.
Hypertens Res. 2011 Apr 21. [Epub ahead of print]
PMID:
21512515
[PubMed - as supplied by publisher]
Salidroside Attenuates Hydrogen Peroxide-Induced Cell Damage Through a cAMP-Dependent Pathway.
Guan S, Wang W, Lu J, Qian W, Huang G, Deng X, Wang X.
Molecules. 2011 Apr 19;16(4):3371-3379.
PMID:
21512445
[PubMed - as supplied by publisher]
Factors Predicting Mortality in Invasive Pneumococcal Disease in Adults in Alberta.
Marrie TJ, Tyrrell GJ, Garg S, Vanderkooi OG.
Medicine (Baltimore). 2011 Apr 21. [Epub ahead of print]
PMID:
21512414
[PubMed - as supplied by publisher]
Estimation of Oxygen Uptake From Heart Rate and Ratings of Perceived Exertion in Young Soccer Players.
Wong DP, Carling C, Chaouachi A, Dellal A, Castagna C, Chamari K, Behm DG.
J Strength Cond Res. 2011 Apr 20. [Epub ahead of print]
PMID:
21512400
[PubMed - as supplied by publisher]
Mitochondrial pathway leading to programmed cell death induced by aluminum phytotoxicity in Arabidopsis.
Li Z, Xing D.
Plant Signal Behav. 2010 Dec 1;5(12):1660-1662.
PMID:
21512328
[PubMed - as supplied by publisher]
Autophagy in the pathogenesis of myelodysplastic syndrome and acute myeloid leukemia.
Watson AS, Mortensen M, Simon AK.
Cell Cycle. 2011 Jun 1;10(11). [Epub ahead of print]
PMID:
21512311
[PubMed - as supplied by publisher]
Direct Assessments of the Antioxidant Effects of the Novel Collagen Peptide on Reactive Oxygen Species Using Electron Spin Resonance Spectroscopy.
Kobayashi K, Maehata Y, Kawamura Y, Kusubata M, Hattori S, Tanaka K, Miyamoto C, Yoshino F, Yoshida A, Wada-Takahashi S, Komatsu T, Takahashi SS, Lee MC.
J Pharmacol Sci. 2011 Apr 21. [Epub ahead of print]
PMID:
21512306
[PubMed - as supplied by publisher]
A Strong Protective Action of Guttiferone-A, a Naturally Occurring Prenylated Benzophenone, Against Iron-Induced Neuronal Cell Damage.
Figueredo YN, García-Pupo L, Rubio OC, Hernández RD, Naal Z, Curti C, Andreu GL.
J Pharmacol Sci. 2011 Apr 21. [Epub ahead of print]
PMID:
21512303
[PubMed - as supplied by publisher]
Effects of Intestinal Microflora on Superoxide Dismutase Activity in the Mouse Cecum.
Dobashi Y, Miyakawa Y, Yamamoto I, Amao H.
Exp Anim. 2011;60(2):133-139.
PMID:
21512268
[PubMed - as supplied by publisher]
??????Conservative Management of Achilles Tendon Wounds: Results of a Retrospective Study.
Kleinman Y, Cahn A.
Ostomy Wound Manage. 2011 Apr;57(4):32-40.
PMID:
21512191
[PubMed - as supplied by publisher]
Laser-based absorption spectroscopy as a technique for rapid in-line analysis of respired gas concentrations of oxygen and carbon dioxide.
Cummings B, Hamilton ML, Ciaffoni L, Pragnell TR, Peverall R, Ritchie GA, Hancock G, Robbins PA.
J Appl Physiol. 2011 Apr 21. [Epub ahead of print]
PMID:
21512147
[PubMed - as supplied by publisher]
The hypoxia associated factor (HAF) switches cells from HIF-1{alpha} to HIF-2{alpha} dependent signaling promoting stem cell characteristics, aggressive tumor growth and invasion.
Koh MY, Lemos R Jr, Liu XP, Powis G.
Cancer Res. 2011 Apr 21. [Epub ahead of print]
PMID:
21512133
[PubMed - as supplied by publisher]
Coactivators necessary for transcriptional output of the hypoxia inducible factor, HIF, are directly recruited by ARNT PAS-B.
Partch CL, Gardner KH.
Proc Natl Acad Sci U S A. 2011 Apr 21. [Epub ahead of print]
PMID:
21512126
[PubMed - as supplied by publisher]
Latitudinal Gradients in Greenhouse Seawater {delta}18O: Evidence from Eocene Sirenian Tooth Enamel.
Clementz MT, Sewall JO.
Science. 2011 Apr 22;332(6028):455-458.
PMID:
21512030
[PubMed - as supplied by publisher]
High-Performance Electrocatalysts for Oxygen Reduction Derived from Polyaniline, Iron, and Cobalt.
Wu G, More KL, Johnston CM, Zelenay P.
Science. 2011 Apr 22;332(6028):443-447.
PMID:
21512028
[PubMed - as supplied by publisher]
Proud sponsors of Aeromat 2012. Please join us and our customers & co-sponsors Boeing and ATI on
June 18-20, 2012
in Charlotte, North Carolina
Manganese Cobalt Oxide is a highly insoluble thermally stable source suitable for glass, optic and ceramic applications. Oxide compounds are not conductive to electricity. However, certain perovskite structured oxides are electronically conductive finding application in the cathode of solid oxide fuel cells and oxygen generation systems. They are compounds containing at least one oxygen anion and one metallic cation. They are typically insoluble in aqueous solutions (water) and extremely stable making them useful in ceramic structures as simple as producing clay bowls to advanced electronics and in light weight structural components in aerospace and electrochemical applications such as fuel cells in which they exhibit ionic conductivity. Metal oxide compounds are basic anhydrides and can therefore react with acids and with strong reducing agents in redox reactions. Manganese Cobalt Oxide is also available in pellets, pieces, powder, sputtering targets, tablets, and nanopowder (from American Elements' nanoscale production facilities). See Nanotechnology for more nanotechnology applications information. High purity, submicron and nanopowder forms may be considered. Additional technical, research and safety (MSDS) information is available.
Manganese is a Block D, Group 7, Period 4 element. The number of electrons in each of Manganese's shells is 2, 8, 13, 2 and its electronic configuration is [Ar] 3d5 4s2. In its elemental form manganese's CAS number is 7439-96-5. The manganese atom has a radius of 136.7.pm and it's Van der Waals radius is 200.pm. Manganese in excess is toxic, in particular the inhalation of manganese in powder or dust form. Manganese metal is a key component of aluminum alloys. Manganese oxide is used in dry cell
batteries. Manganese is used in steel production to remove sulfur and oxygen. Manganese is the colorant in natural 
amethyst stones and is used in glass and ceramics to also create the amethyst color. It is used like the element cerium to "decolorize" glass by offsetting the green from impurities of ferric ions. Permanganate is a powerful oxidizing agent and is used in medicine. It is added as a nutritional supplement for both human and animal consumption. Recently, the oxide in the form of various perovskite structures have demonstrated applications in oxygen generation and solid oxide fuel cells. Manganese was first discovered by Johann Gahn in 1774. The name Manganese originates from the Latin word mangnes meaning magnet. See Manganese research below.
Cobalt is a Block D, Group 9, Period 4 element. The number of electrons in each of Cobalt's shells is 2, 8, 15, 2 and its electronic configuration is [Ar] 3d7 4s2. In its elemental form cobalt's CAS number is 7440-48-4. The cobalt atom has a radius of 125.3.pm and it's Van der Waals radius is 200.pm. Cobalt and its compounds are somewhat toxic by skin contact and moderately toxic by inhalation. Cobalt has a metallic permeability two thirds that of iron. It exists as a mixture of two allotropes over a wide temperature range. The transformation is slow and accounts in part for the wide variation in the physical properties of cobalt. It is alloyed with iron, nickel and other metals to make Alnico, an alloy of unusual magnetic strength with many 
important 
uses. Samarium-cobalt is one of the highest strength magnet alloys known. Cobalt compounds produce a brilliant and permanent blue color in ceramic glazes, glass, pottery, tiles, and enamels. Co-60 is useful as a gamma ray source. Toxicity of cobalt and its compounds are mild by skin contact and moderate by ingestion. Cobalt is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Cobalt was first discovered by George Brandt in 1737. The origin of the word Cobalt comes from the German word 'Kobalt or Kobold' which translates as "goblin", "elf" or "evil spirit". See Cobalt research below.
