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Relevant bibliographies by topics / Iron oxalate

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Academic literature on the topic 'Iron oxalate'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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Journal articles on the topic "Iron oxalate"

1

Niskanen, Raina. "Extractable aluminium, iron and manganese in mineral soils: II Extractability by oxalate and pyrophosphate." Agricultural and Food Science 61, no. 2 (1989): 79–87. http://dx.doi.org/10.23986/afsci.72356.

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The extractability of aluminium, iron and manganese by 0.05 M oxalate and pyrophosphate was studied in samples of 23 mineral soils. Dilute extractants were studied because conventional reagents may cause problems in analytical work. The mean values for Al, Fe and Mn extracted by conventional Tamm’s oxalate were 67, 81 and 1.5 mmol/kg soil, respectively. On the average, 0.05 M oxalate solutions at pH 2.9 and 4.2 extracted Al, Fe and Mn amounts that were 103, 113 and 87 % and 72, 82 and 83 % of the amounts extractable by Tamm’s oxalate, respectively. Eeach metal released by 0.05 M oxalates corre

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Diefallah, El-H. M., M. A. Mousa, A. A. El-Bellihi, E. H. El-Mossalamy, G. A. El-Sayed, and M. A. Gabal. "Thermal decomposition of iron(II) oxalate–magnesium oxalate mixtures." Journal of Analytical and Applied Pyrolysis 62, no. 2 (2002): 205–14. http://dx.doi.org/10.1016/s0165-2370(01)00117-6.

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Basahel, S. N., A. A. El-Bellihi, M. Gabal, and El-H. M. Diefallah. "Thermal decomposition of iron(III) oxalate-magnesium oxalate mixtures." Thermochimica Acta 256, no. 2 (1995): 339–46. http://dx.doi.org/10.1016/0040-6031(94)02158-k.

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Benhacine, Mohamed Al Amine, Malika Hamadène, Sofiane Bouacida та Hocine Merazig. "The new one-dimensional coordination polymercatena-poly[[diaquasodium(I)]-μ-oxalato-[diaquairon(III)]-μ-oxalato]". Acta Crystallographica Section C Structural Chemistry 72, № 3 (2016): 243–50. http://dx.doi.org/10.1107/s2053229616002953.

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The oxalate dianion is one of the most studied ligands and is capable of bridging two or more metal centres and creating inorganic polymers based on the assembly of metal polyhedra with a wide variety of one-, two- or three-dimensional extended structures. Yellow single crystals of a new mixed-metal oxalate, namelycatena-poly[[diaquasodium(I)]-μ-oxalato-κ4O1,O2:O1′,O2′-[diaquairon(III)]-μ-oxalato-κ4O1,O2:O1′,O2′], [NaFe(C2O4)2(H2O)4]n, have been synthesized and the crystal structure elucidated by X-ray diffraction analysis. The compound crystallizes in the noncentrosymmetric space groupI41(Z=

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Gabal, M. A., A. A. El-Bellihi, and H. H. El-Bahnasawy. "Non-isothermal decomposition of zinc oxalate–iron(II) oxalate mixture." Materials Chemistry and Physics 81, no. 1 (2003): 174–82. http://dx.doi.org/10.1016/s0254-0584(03)00183-4.

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Gismonti, Pedro Rosário, Jéssica Frontino Paulino, and Julio Afonso. "RECOVERY OF METALS FROM ELECTROACTIVE COMPONENTS OF SPENT Ni-MH BATTERIES AFTER LEACHING WITH FORMIC ACID." Detritus, no. 14 (March 31, 2021): 68–77. http://dx.doi.org/10.31025/2611-4135/2021.14063.

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this work describes a route for recovering nickel, cobalt, iron, zinc and lanthanides from spent nickel-metal hydride batteries. Formic acid was used as leachant. Experiments were run at 25-50°C for 1-4 h. Under the best conditions leaching yields surpassed 99 wt.%, except for iron. The insoluble matter contains almost solely iron as iron(III) basic formate. The leachate went through six separation procedures, combining solvent extraction with D2EHPA as extractant, and precipitation reactions. Fe2+ and Zn2+ were extracted together (> 99 wt.%) from the original leachate (pH ~1.5). Yttrium an

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Niskanen, Raina. "Release of phosphorus, aluminium and iron in fractionation of inorganic soil phosphorus." Agricultural and Food Science 59, no. 2 (1987): 141–45. http://dx.doi.org/10.23986/afsci.72256.

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Release of phosphorus, aluminium and iron by a modified Chang and Jackson procedure was studied in five mineral soils. Quantities of aluminium and iron released during the procedure and extracted by acid ammonium oxalate were compared. The extractability of P, Al and Fe by 1 M NH4CI and that of Al and Fe by alkaline 0.5 M NH4F was poor. Proportions of P extracted by 0.5 M NH4F (0.2—10.4 mmol/kg soil) and 0.1 M NaOH (0.1— 9.8 mmol/kg soil) were related to the molar ratio of oxalate-extractable iron and aluminium. P extracted by 0.25 M H2SO4 amounted to 2.1—12.2 mmol/kg soil. Al extracted by 0.1

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Paris, R., and K. V. Desboeufs. "Effect of atmospheric organic complexation on iron-bearing dust solubility." Atmospheric Chemistry and Physics Discussions 13, no. 2 (2013): 3179–202. http://dx.doi.org/10.5194/acpd-13-3179-2013.

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Abstract. Recent studies reported that the effect of organic complexation may be a potentially important process to be considered in models to estimate atmospheric iron flux to the ocean. In this study, we investigated this effect by a series of dissolution experiments on iron-bearing dust in presence or absence of various organic compounds typically found in the atmospheric waters (acetate, formate, oxalate, malonate, succinate, glutarate, glycolate, lactate, tartrate and humic acid as an analogue of humic like substances (HULIS)). Only 4 of tested organic ligands (oxalate, malonate, tartrate

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Piro, O. E., G. A. Echeverría, and E. J. Baran. "Spontaneous enantiomorphism in poly-phased alkaline salts of tris(oxalato)ferrate(III): crystal structure of cubic NaRb5[Fe(C2O4)3]2." Acta Crystallographica Section E Crystallographic Communications 74, no. 7 (2018): 905–9. http://dx.doi.org/10.1107/s2056989018008022.

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We show here that the phenomenon of spontaneous resolution of enantiomers occurs during the crystallization of the sodium and rubidium double salts of the transition metal complex tris(oxalato)ferrate(III), namely sodium pentarubidium bis[tris(oxalato)ferrate(III)], NaRb5[Fe(C2O4)3]2. One enantiomer of the salt crystallizes in the cubic space groupP4332 withZ= 4 and a Flack absolute structure parameterx= −0.01 (1) and its chiral counterpart in the space groupP4132 withx= −0.00 (1). All metal ions are at crystallographic special positions: the iron(III) ion is on a threefold axis, coordinated b

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Luo, Chao, and Yuan Gao. "Aeolian iron mobilisation by dust - acid interactions and their implications for soluble iron deposition to the ocean: a test involving potential anthropogenic organic acidic species." Environmental Chemistry 7, no. 2 (2010): 153. http://dx.doi.org/10.1071/en09116.

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Environmental context. Studying the input of atmospheric soluble iron to the ocean is important as the soluble form of iron is bioavailable for phytoplankton uptake in the surface ocean to support photosynthesis. In this paper, the effect of organic acidic species on atmospheric iron dissolution is addressed through a global model for the first time. The new results contribute to a better understanding of iron dissolution processes in the atmosphere and the role of atmospheric iron in ocean biogeochemical cycles. Abstract. Dust deposition is a major source of iron in certain oceanic regions. M

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Dissertations / Theses on the topic "Iron oxalate"

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Teer, Joseph Edward. "A study of the biodegradation of modelled iron oxalate leach liquors in an upflow anaerobic sludge blanket (UASB) reactor." Thesis, Imperial College London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309306.

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Wolter, Roberto Carlos Doring. "Prognóstico da toxidez de ferro em arroz irrigado por alagamento através da análise de solo pelo método oxalato de amônio." Universidade Federal de Pelotas, 2010. http://repositorio.ufpel.edu.br/handle/ri/1184.

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Made available in DSpace on 2014-08-20T13:25:43Z (GMT). No. of bitstreams: 1 Dissertacao_Roberto_ Carlos_Doring_ Wolter.pdf: 973904 bytes, checksum: 67cf8c20b65c6a70b13833df022a0d9c (MD5) Previous issue date: 2010-03-05<br>Iron toxicity can cause considerable reductions in the productivity of rice, depending on the severity of symptoms and the affected area in the field. It is necessary to identify the factors that determine the occurrence of this nutritional disorder, so that effective measures may be carried out to correct this problem in the field. The objective of this study is to

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Puntel, Robson Luiz. "Caracterização da atividade pró-oxidante de diferentes agentes e estudo do potencial antioxidante de intermediários do ciclo de krebs sobre alterações oxidativas induzidas in vitro." Universidade Federal de Santa Maria, 2008. http://repositorio.ufsm.br/handle/1/4400.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Previous data from the literature have shown that some Krebs cycle intermediates could act as antioxidant in several models, both in vitro and in vivo. However, the mechanism(s) involved in the antioxidant effect of Krebs cycle intermediates are not fully understood. Additionally, there are scarce data in the literature taking into account the in vitro effect of Krebs cycle intermediates during oxidative stress conditions. Thus, the aim of this study was to determine the effect of some Krebs cycle intermediates on lipid peroxidatio

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Tailhades, Philippe. "Elaboration, caracterisation et optimisation des proprietes morphologiques et magnetiques de ferrites lacunaires destines a l'enregistrement haute densite." Toulouse 3, 1988. http://www.theses.fr/1988TOU30185.

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Cette etude presente la mise au point de particules ferro ou ferrimagnetiques submicroniques dans le but d'ameliorer les performances a l'enregistrement magnetique haute densite (numerique). Tout d'abord, on a etudie les conditions de precipitations des precurseurs oxaliques a base de fer permettant d'obtenir des particules aciculaires dont les dimensions moyennes sont 0,2 mu m pour la longueur et 0,05 mu m pour le diametre. Par traitement thermique, on transforme ces precurseurs en ferrites lacunaires, en cherchant a obtenir des particules monocristallines monodomaines. En jouant sur l'anisot

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Mandal, Sukhendu. "Investigations Of Open-Framework Metal Phosphates, Phosphites And Phosphite-Oxalate Materials." Thesis, 2007. http://hdl.handle.net/2005/506.

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Open-framework inorganic materials constitute an important area of study in materials chemistry, because of their potential applications in areas such as sorption and catalysis. After the discovery of nanoporous aluminium phosphates by Flanigen et al in 1982, there has been a tremendous growth in the area of porous solids. Most of them are based upon oxygen containing materials especially phosphates, and they exhibit fascinating architectures with unusual bonding and coordination environment. Besides metal phosphates and phosphites, inorganic-organic hybrids constitute an important family o

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Abd, El-Samie Ihab Mohamed Farid. "Phosphordüngewirkung von Klärschlämmen aus Klärwerken mit Phosphateliminierung durch Eisensalze." Doctoral thesis, 2003. http://hdl.handle.net/11858/00-1735-0000-0006-AFFD-A.

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Book chapters on the topic "Iron oxalate"

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Holze, Rudolf. "Ionic conductance of iron oxalate." In Electrochemistry. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49251-2_832.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of tetrathiafulvalene radical salt of dimetric iron(III) oxalate." In Magnetic Properties of Paramagnetic Compounds. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54231-6_241.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of tetramethyltetrathiafulvalene radical salt of dimetric iron(III) oxalate." In Magnetic Properties of Paramagnetic Compounds. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54231-6_242.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of tetrathiafulvalene radical salt of monomeric iron(III) oxalate." In Magnetic Properties of Paramagnetic Compounds. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54231-6_248.

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Zhang, Keyu, Yin Li, Runhong Wei, Yunke Wang, Yongnian Dai, and Yaochun Yao. "Controllable Synthesis of Battery-Grade Iron Oxalate with Waste Ferrous Sulfate from Titanium Dioxide Production." In Energy Technology 2020: Recycling, Carbon Dioxide Management, and Other Technologies. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36830-2_24.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of N, N′-diethyldithiocarbamatobis(oxalato)iron(III)." In Magnetic Properties of Paramagnetic Compounds. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-53971-2_84.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of bis(N, N′-diethyldithiocarbamato)-oxalato-iron(III)." In Magnetic Properties of Paramagnetic Compounds. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-53971-2_83.

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Choudhury, Amitava, Srinivasan Nataraja, and C. N. R. Rao. "Hybrid Open-Framework Iron Phosphate – Oxalates Demonstrating a Dual Role of the Oxalate Unit." In World Scientific Series in 20th Century Chemistry. WORLD SCIENTIFIC, 2003. http://dx.doi.org/10.1142/9789812835734_0068.

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Jordan, Robert B. "Inorganic Photochemistry." In Reaction Mechanisms of Inorganic and Organometallic Systems. Oxford University Press, 2007. http://dx.doi.org/10.1093/oso/9780195301007.003.0009.

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Electromagnetic radiation in the form of UV and visible light has long been used as a reactant in inorganic reactions. The energy of light in the 200- to 800-nm region varies between 143 and 36 kcal mol-1, so it is not surprising that chemical bonds can be affected when a system absorbs light in this readily accessible region. Systematic mechanistic studies in this area have benefited greatly from the development of lasers that provided intense monochromatic light sources and from improvements in actinometers to measure the light intensity. Prior to the laser era, it was necessary to use filters to limit the energy of the light used to a moderately narrow region or to just cut off light below a certain wavelength. Pulsed-laser systems also allow much faster monitoring of the early stages of the reaction and the detection of primary photolysis intermediates. The systems discussed in this chapter have been chosen because of their relationship to substitution reaction systems discussed previously. For a broader assessment of this area, various books and review articles should be consulted. Mechanistic photochemistry incorporates features of both electron-transfer and substitution reactions, but the field has some of its own terminology, which is summarized as follows: The quantum yield,F , is the number of defined events, in terms of reactant or product, that occur per photon absorbed by the system. An einstein, E, is defined as a mole of photons, and if n is the moles of reactant consumed or product formed, then F = n/E. For simple reactions F£ 1 but can be >1 for chain reactions. An actinometer is a device used to measure the number of einsteins emitted at a particular wavelength by a particular light source. Photon-counting devices are now available and secondary chemical actinometers have been developed, such as that based on the Reineckate ion, Cr(NH3)2(NCS)4-, as well as the traditional iron(III)-oxalate and uranyl-oxalate actinometers. An early problem in this field was the lack of an actinometer covering the 450- to 600-nm range and the Reineckate actinometer solved this problem.

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Leenheer, Jerry A., and Gary E. Maciel. "Preparation of Low-Carbon Sediments from the Mississippi River and Certain Tributaries for Solid-state CPMAS 13C NMR Analysis." In Nuclear Magnetic Resonance Spectroscopy in Environment Chemistry. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780195097511.003.0024.

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The nature of organic carbon in aquatic sediments and soils with low carbon contents and significant contents of paramagnetic elements such as iron and manganese is difficult to assess by solid-state, cross-polarization magic angle spinning (CPMAS) 13C nuclear magnetic resonance (NMR) spectrometry because of the inherent low sensitivity of 13C NMR analyses, and band broadening and sensitivity losses caused by paramagnetic elements. Other investigators have addressed this problem in the analysis of soils by enriching the organic carbon content by flotation, by magnetic separation of paramagnetic minerals, and by chemical reduction of iron by stannous chloride and sodium dithionite. In this study, they found that satisfactory 13C NMR spectra could be obtained if the C/Fe ratio was greater than 1 wt%. Each of the physical and chemical treatments used to increase the C/Fe ratio resulted in losses of organic matter and changes in the nature of organic matter through physical fractionation and chemical alteration. Suspended stream sediments frequently have equivalent contents of organic carbon and sesquioxide coatings with which the organic matter is associated. These sesquioxide coatings consist predominantly of iron and manganese oxyhydroxides that cause problems with NMR analyses. In this chapter we describe a method to enrich organic matter and remove iron and manganese from low-carbon sediments sampled from the Mississippi, Illinois, and Ohio Rivers with minimal loss and alteration of the organic matter. The second objective is to characterize the sedimentary organic matter by 13C NMR using recent advances that increase instrument sensitivity. Suspended and bed sediments were collected during a sampling cruise on the Mississippi River during May–June 1990. Fine bed sediments were collected in depositional regions of the river or tributaries with a pipe dredge. Suspended silts were collected using a continuous-flow centrifuge operated on board the Research Vessel Acadiana. Both bed sediments and suspended silts were freeze-dried prior to additional treatment procedures and NMR analyses. A flow chart of selective mineral dissolution procedures is presented in Figure 17.1. The acid pyrophosphate treatment6 was placed first in the sequence to remove calcium and magnesium minerals that would form insoluble oxalates in the following extraction.

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Conference papers on the topic "Iron oxalate"

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Negrea, A., M. Ciopec, L. Lupa, C. Muntean, R. Lazau, and P. Negrea. "Kinetic and thermodynamic aspects of arsenic (III) adsorption onto iron oxide obtained from iron oxalate." In WATER POLLUTION 2010. WIT Press, 2010. http://dx.doi.org/10.2495/wp100111.

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Smrčka, David, Vít Procházka, Petr Novák, Josef Kašlík, and Vlastimil Vrba. "Iron oxalate decomposition process by means of Mössbauer spectroscopy and nuclear forward scattering." In MÖSSBAUER SPECTROSCOPY IN MATERIALS SCIENCE 2016. Author(s), 2016. http://dx.doi.org/10.1063/1.4966008.

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Zboril, Radek. "Nanocrystalline Iron(III) Oxides Formed under Dynamic Heating of Ferrous Oxalate Dihydrate in Air." In INDUSTRIAL APPLICATIONS OF THE MOSSBAUER EFFECT: International Symposium on the Industrial Applications of the Mossbauer Effect. AIP, 2005. http://dx.doi.org/10.1063/1.1923665.

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Jaiswal, Shivendra Kumar, and Jitendra Kumar. "Sol-Gel Synthesis and Magnetic, Optical and Impedance Behaviour of Strontium Ferrite Powder." In ASME 2011 International Manufacturing Science and Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/msec2011-50067.

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An attempt has been made to synthesize SrFeO3-δ powder by sol-gel process involving oxalate formation, its digestion for 4h, drying at 150°C for 24h, and decomposition at 800°C for 10h. The resulting powder is shown to a) exhibit a single phase with a perovskite-type cubic structure and lattice parameter a = 3.862±0.002A˚, b) contain irregular shape particles, and c) display optical absorption peaks corresponding to charge transfer from oxygen to iron (3.73 and 3.41eV), t2g to eg transition of Fe3+ (1.57eV), and crystal field (3d-3d) charge transfer of Fe3+ (1.25eV). Impedance over a wide freq

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