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The H93G Myoglobin Cavity Mutant as a Versatile Template for Modeling Heme Proteins:Ferrous,Ferric,and Ferryl Mixed-Ligand Complexes with Imidazole in the Cavity
copper(II) azomethine imidate crystal structures
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2016/5/23
One of the difficulties in preparing accurate ambient-temperature model complexes for heme proteins, particularly in the ferric state, has been the generation of mixed-ligand adducts: complexes with d...
Enrichment of Phosphate on Ferrous Iron Phases during Bio-Reduction of Ferrihydrite
Phosphate Iron Reduction Ferrihydrite Ferrous Iron Vivianite
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2013/3/7
The reduction of less stable ferric hydroxides and formation of ferrous phases is critical for the fate of phosphorus in anaerobic soils and sediments. The interaction between ferrous iron and phospha...
Ferrous freudenbergite in ilmenite megacrysts: A unique paragenesis from the Dalnaya kimberlite, Yakutia
Ferrous freudenbergite ilmenite megacrysts unique paragenesis Dalnaya kimberlite Yakutia
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2012/4/6
AsuiteofpicroilmenitemegacrystsfromtheDalnayakimberlite,Siberia,wasfoundtofallintooneoftwogroups,themostabundanthaving11¤C12wt%MgOand650¤C15ppmNb,andtheothershavinglowerMgO(8.8¤C10.2wt%)andhigherNb(17...
Acid Activation of a Ferrous Saponite (Griffithite): Physico-Chemical Characterization and Surface Area of the Products Obtained
Acid activation Ferrous saponite Free silica Surface area
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2011/12/29
A ferrous saponite (griffithite) from Griffith Park (California, USA) was treated with solutions of HCl (0.62, 1.25 and 2.5% by weight) at 25°C for 2, 6, 24 and 48 hours. The resulting solids were cha...
Influence of Mn2+ and pH on the Formation of Iron Oxides from Ferrous Chloride and Ferrous Sulfate Solutions
Goethite Infrared spectroscopy Iron oxides Lepidocrocite Maghemite Manganese Synthesis X-ray powder diffraction
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2012/1/6
The influence of Mn2+ on the formation of Fe oxides at pHs of 6.0 and 8.0 and varying Mn/Fe molar ratios (0, 0.1, 1.0, and 10.0) in the FeCl2-NH4OH and FeSO4-NH4OH systems was studied by X-ray powder ...
Clayey fragments colored deep bluish-green are widely found in glassy rhyolitic tuffs at Oya, Tochigi Prefecture. In room-air the color changes to black or gray within one hour and finally to brown in...
Deferration Effect on Structural Ferrous-Ferric Iron Ratio and CEC of Vermiculites and Soils
Deferration Structural Ferrous-Ferric Iron Ratio CEC Vermiculites Soils
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2012/2/21
Deferration by reduction of free Fe2O3 with Na2S2O4 in the presence of Na citrate and NaHCO3 caused a change in valence state of 10 to 35 per cent of the total structural iron in micaceous vermiculite...