Results 221 to 230 of about 56,466 (261)

Transformation of ferric compounds into iron oxides

International Geology Review, 1977
Ferrihydrite (2.5 Fe2O2-4.5 H2O) is an unstable colloidal mineral. It dissolves in highly alkaline solutions and is precipitated from them in the form of goethite. Jarosite is stable at very low pH but is decomposed at higher values of pH with separation of iron oxides. Experiments show that in rapid decomposition of jarosite a protohematite substance,
F.V. Chukhrov, A. I. Gorshkov, B. B. Zvyagin, L.P. Yermilova, L.P. Sapolnova   +4 more
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Photodegradation of polyethylene in the presence of ferric salt: Influence of ferric acetylacetonate on model compounds

Journal of Polymer Science: Polymer Chemistry Edition, 1978
AbstractThe influence of ferric acetylacetonate [Fe(acac)3] on the photodegradation of model compounds of polyethylene (PE) was examined. By studying electron‐spin‐resonance (ESR) spectra of photoirradiated compounds such as 1‐octene and 1,7‐octadiene, which contain carbon double bonds, Fe(acac)3 was found to accelerate the formation of allyl radical ...
Yoshitaka Ogiwara, Hitoshi Kubota, Yuji Kimura   +2 more
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ChemInform Abstract: Ferric Iodide as a Nonexistent Compound.

ChemInform, 1990
AbstractThe identity of the black solid compound (IV) is established as ferric iodide by chemical means and its UV‐VIS spectra are compared with those of the related iron(III) halides.
K. B. YOON, J. K. KOCHI
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Mediating effects of ferric chelate compounds in microbial fuel cells

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1983
Abstract The performance of bio-fuel cells containing Escherichia coli , glucose and a series of ferric chelate reagents was studies. The measured coulombic outputs indicate that the most of the compounds work effectively as electron-transfer mediators in the fuel cells.
Kazuko Tanaka, Carmen A. Vega, Reita Tamamushi   +2 more
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Electron-microscopy study of the ferric chloride/graphite compound

Carbon, 1967
Abstract The direction of the Burgers vector of the dislocations bounding the intercalated ferric chloride layers in the interlamellar compound of graphite and ferric chloride has been determined by extinction of the contrast and is found to be perpendicular to the c -planes. From this result the conclusion is drawn that graphite preserves its a b
M. Heerschap, P. Delavignette
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Magnetic properties of some high spin ferric heme compounds

Biochimica et Biophysica Acta (BBA) - General Subjects, 1971
Abstract Using a crystal field model, and generalized expressions for magnetic properties, the magnetization, susceptibilities and effective magnetic moments of a series of high spin heme compounds whose zero-field characteristics are known have been calculated as a function of both magnetic field strength and temperature.
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FERRIC CHLORIDE-CATALYZED DEOXYGENATIVE CHLORINATION OF CARBONYL COMPOUNDS TO HALIDES

Organic Preparations and Procedures International, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Z. Li, C. Sheng, H. Qiu, Y. Zhang
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The EFG in oxonium ferric orthophosphate hydrate and related compounds

Hyperfine Interactions, 1988
The point cherge model was used to interpret the small quadrupole spilting of Fe3H15(PO4)8·5H2O by comparing it with related phosphates of known structure. The approximation is sufficient as long as octahedrally coordinated compounds are compared for which Vzz and η do not change their signs.
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Chlorinated Aromatic Compounds in a Thermal Process Promoted by Oxychlorination of Ferric Chloride

Environmental Science & Technology, 2010
The relationship between the formation of chlorinated aromatic (aromatic-Cl) compounds and ferric chloride in the solid phase during a thermal process motivated us to study the chemical characteristics of iron in a model solid sample, a mixture of FeCl(3) x 6H(2)O, activated carbon, and boron nitride, with increasing temperature.
Fujimori, Takashi, Takaoka, Masaki, Morisawa, Shinsuke   +2 more
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Ferric(III) Chloride Promoted Electrophilic Thiocyanation of Aromatic and Heteroaromatic Compounds.

ChemInform, 2005
Indoles, oxindoles and aromatic amino compounds undergo smooth thiocyanation with ammonium thiocyanate in the presence of anhydrous FeCl 3 in dichloromethane under mild conditions to afford the corresponding 3-indolyl and4-aryl thiocyanates, respectively, in high yields with excellent selectivity. The use of ferric chloride makes it quite simple, more
J. S. Yadav, B. V. Reddy, A. D. Krishna, Ch. Suresh Reddy, A. V. Narsaiah   +4 more
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