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Dissertations / Theses on the topic 'Iron oxides'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Yang, Xiaofang. "Interactions between iron oxides and silicates /." Luleå : Division of Chemistry, Department of Chemical Engineering and Geosciences, Luleå University of Technology, 2008. http://epubl.ltu.se/1402-1757/2008/31/.

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2

Leake, Thomas Russell. "Zinc removal using biogenic iron oxides." Pullman, Wash. : Washington State University, 2009. http://www.dissertations.wsu.edu/Thesis/Fall2009/T_Leake_120409.pdf.

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Thesis (M.S. in enviromental engineering)--Washington State University, December 2009.<br>Title from PDF title page (viewed on Jan. 28, 2010). "Department of Civil and Environmental Engineering." Includes bibliographical references (p. 27-31).

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3

Majzlan, Juraj. "Thermodynamics of iron and aluminum oxides /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2002. http://uclibs.org/PID/11984.

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4

Rennert, Thilo. "Sorption of iron cyanide complexes on iron oxides and in soils." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=964937069.

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5

Lee, Sung Oh School of Chemical Engineering &amp Industrial Chemistry UNSW. "Dissolution of iron oxides by oxalic acid." Awarded by:University of New South Wales. School of Chemical Engineering & Industrial Chemistry, 2005. http://handle.unsw.edu.au/1959.4/23924.

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The iron content of industrial minerals can be reduced by physical and chemical processing. Chemical processing is very efficient to achieve a high degree of iron removal at minimum operating cost. Both inorganic acids and organic acids have been used for clay refining. However, due to environmental pollution and contamination of products with the SO42- and Cl-, inorganic acids should be avoided as much as possible. This research investigated the use of oxalic acid to dissolve iron oxides and the dissolution characteristics of natural iron oxides. The dissolution of iron oxides in oxalic acid

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6

Gonzalez, Lucena Fedora. "Mineral magnetism of synthetic microcrystalline and nanophase iron oxides and iron oxyhydroxides." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/26646.

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A suite of well-characterized synthetic microcrystalline hematite samples, 2-line and 6-line ferrihydrite samples and nanohematite samples are studied through magnetization-field curves measured at room temperature. The single-domain microcrystalline hematite samples are analyzed through basic hysteresis parameters providing sample characteristics such as magnetic anisotropy information, the effect of annealing on the origin of the magnetization and the relatively constant intrinsic high field susceptibility. The application of a magnetic granulometry method on the magnetic data of the superpa

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7

Bertel, Douglas E. "Characterizations of Iron Sulfides and Iron Oxides Associated with Acid Mine Drainage." University of Akron / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=akron1302276664.

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8

Ferraioli, C. Christopher. "Nanocrystals, core-shells, and nanocapsules of iron oxide." Click here for download, 2008. http://proquest.umi.com/pqdweb?did=1559855251&sid=1&Fmt=2&clientId=3260&RQT=309&VName=PQD.

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9

Mäkie, Peter. "Surface reactions of Organophosphorus compounds on Iron Oxides." Doctoral thesis, Umeå universitet, Kemiska institutionen, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-53958.

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10

Nadler, Jason Hayes. "The hydrogen reduction of iron and chromium oxides." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/19410.

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11

Al-Rawwas, Ahmed Dhofar. "A Mossbauer spectroscopy study of strontium iron oxides." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385228.

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12

Cordray, Antoine. "Phosphorus removal characteristics on biogenic ferrous iron oxides." Pullman, Wash. : Washington State University, 2008. http://www.dissertations.wsu.edu/Thesis/Fall2008/a_cordray_111708.pdf.

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Thesis (M.S. in environmental engineering)--Washington State University, December 2008.<br>Title from PDF title page (viewed on Dec. 23, 2008). "Department of Civil and Environmental Engineering." Includes bibliographical references (p. 69-72).

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13

Ayub, Ibrar. "Oxidation and reduction properties of iron-containing oxides." Thesis, n.p, 2001. http://ethos.bl.uk/.

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14

Menting, Victor L. "Solubility Studies of Iron(III) Oxides and Hydroxides." PDXScholar, 1994. https://pdxscholar.library.pdx.edu/open_access_etds/4853.

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The hydrolysis of iron(III) ions in aqueous solution forms a series of soluble hydroxide complexes with associated equilibrium constants. The solubility of iron(III) is controlled by the various soluble hydroxide complexes, and can, in theory, be calculated from the pH and equilibrium constants. Experimental verification of the calculated solubility has proven difficult due to the lack of sensitive analytical techniques and the presence of colloidal ferric hydroxide interferences. Recently, electrochemical methods for the determination of low levels of iron(III) have been developed using adsor

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15

Meyers, Emily. "Phosphate Cycling in the Presence of Biogenic Iron Oxides and Iron-Reducing Bacteria." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37306.

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Nutrient pollution from industrial activity is an environmental problem that persists in water bodies near urban settings, and has been a primary contributor to eutrophication, bacterial contamination, and harmful algal blooms. Biogenic iron oxides offer a potential solution to the treatment of lakes and rivers containing high concentrations of phosphate, the limiting nutrient in aquatic systems. Soluble ferrous iron can act as an electron donor for iron-oxidizing bacteria, which thrive in low-oxygen environments. This results in the formation of insoluble ferric iron minerals, ideal ads

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16

Messi, C. "Nanostructured catalytic metal oxides supported over oxide supports of various nature : the iron oxide system." Doctoral thesis, Università degli Studi di Milano, 2008. http://hdl.handle.net/2434/57081.

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17

Zaki, Aliaa. "A study of thin magnetic films of iron oxides and yttrium iron garnet." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/21664/.

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The structural, magnetic and magneto-optical properties of iron oxides (wustite, magnetite, Hematite and maghemite), yttrium iron garnet (YIG) and calcium doped YIG (Ca:YIG) thin films prepared by pulsed laser deposition (PLD) technique were studied. The properties of iron oxides films grown on sapphire substrate were found to be dependent on the annealing temperature of the target and the oxygen pressure (PO2) during the ablation. For example, the high annealing temperature of the target and base pressure give wustite, whereas a lower annealing temperature with same oxygen pressure and condit

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18

Fernández-Baca, Cristina Paola. "Investigation of the effect of phosphate on iron(ii) sorption to iron oxides." Thesis, University of Iowa, 2010. https://ir.uiowa.edu/etd/497.

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Iron is ubiquitous in the environment mostly as stable iron hydr(oxides) such as hematite (α-Fe2O3) and goethite (α-FeOOH). The Fe(II)-Fe(III) redox couple plays a vital role in nutrient cycling, bacteria respiration, and contaminant removal. This redox couple, however, can be affected by external influences such as anion adsorption of sulfate, oxalate, and phosphate which can influence various goethite properties including the point of zero charge. This study attempts to determine the effect of phosphate sorption to a goethite surface and its subsequent influence on Fe(II) sorption. The objec

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19

Handler, Robert Michael Scherer Michelle M. "Still oxides run deep studying redox transformations involving Fe and Mn oxides using selective isotope techniques /." Iowa City : University of Iowa, 2009. http://ir.uiowa.edu/etd/295.

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20

Kumar, Arun Gurian Patrick L. "Arsenic removal effectiveness of iron oxide-based fibrous adsorbents and stability of granular iron oxide media /." Philadelphia, Pa. : Drexel University, 2008. http://hdl.handle.net/1860/2929.

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21

Taujale, Saru. "INTERACTIONS BETWEEN METAL OXIDES AND/OR NATURAL ORGANIC MATTER AND THEIR INFLUENCE ON THE OXIDATIVE REACTIVITY OF MANGANESE DIOXIDE." Diss., Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/347169.

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Civil Engineering<br>Ph.D.<br>Mn oxides have high redox potentials and are known to be very reactive, rendering many contaminants susceptible to degradation via oxidation. Although Mn oxides typically occur as mixtures with other metal oxides (e.g., Fe, Al, and Si oxides) and natural organic matter (NOM) in soils and aquatic environments, most studies to date have studied the reactivity of Mn oxides as a single oxide system. This study, for the first time, examined the effect of representative metal oxides (Al2O3, SiO2, TiO2, and Fe oxides) and NOM or NOM-model compounds (Aldrich humic acid (A

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22

Lafferty, Brandon James. "Methyl arsenic adsorption and desorption behavior on iron oxides." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/2264.

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Arsenic is a toxic element that is widely distributed throughout the earth??s crust as a result of both natural geologic processes and anthropogenic activities. In virtually all environments, methylated forms of arsenic can be found. Because of the widespread distribution and toxicity of arsenic and methyl-arsenic, their adsorption behavior on soil minerals is of great interest. Although considerable attention has been given to the behavior of inorganic arsenic on mineral surfaces, little research has been conducted regarding interactions of the methyl-arsenic forms. The objective of this stu

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23

Tadesse, Behailu. "Iron and manganese oxides in the soil-water environment." Thesis, Brunel University, 1997. http://bura.brunel.ac.uk/handle/2438/6624.

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The importance of iron and manganese oxides in soil-water environments and their roles in controlling the availability and mobility of contaminants and nutrients are determined. Sorption is simulated using the synthetic iron and manganese oxides: goethite (a-FeOOH), birnessite (Na4Mn14O27.9H20a) nd magnetite (Fe304) which are analogous to natural soil components. Goethite is investigated in the three possible modes of occurrences in soil: colloidal, aggregate, and as coatings on inert materials. The adsorption of cadmium and cobalt onto goethite occurs in a narrow pH range between 6.5 and 7.5.

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24

Falconer, Haley Ryanne Watson. "Column filter studies phosphorus removal using biogenic iron oxides /." Pullman, Wash. : Washington State University, 2009. http://www.dissertations.wsu.edu/Thesis/Fall2009/H_Falconer_100709.pdf.

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Thesis (M.S. in environmental engineering)--Washington State University, December 2009.<br>Title from PDF title page (viewed on Jan. 12, 2010). "Department of Civil and Environmental Engineering." Includes bibliographical references (p. 52-53).

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25

Carey, Elizabeth A. "Using plug-flow reactors to determine the role of soluble Fe(III) in the cycling of iron and sulfur in salt marsh sediments." Thesis, Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-03292004-141819/unrestricted/carey%5Felizabeth%5Fa%5F200312%5Fms.pdf.

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26

Hao, Yalin. "Continuous Hydrothermal Production of Iron Oxide (Fe[subscript 2]0[subscript 3]) and Cobalt Oxide (Co[subscript 3]O[subscript 4])." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/11217.

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27

Kwan, Wai P. (Wai Pang) 1974. "Decomposition of hydrogen peroxide and organic compounds in the presence of iron and iron oxides." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/29585.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2003.<br>Includes bibliographical references.<br>Most advanced oxidation processes use the hydroxyl radical (OH) to treat pollutants found in wastewater and contaminated aquifers because OH reacts with numerous compounds at near diffusion-limited rates. OH can be made by reacting hydrogen peroxide (H202) with either Fe(II) (the Fenton reaction), Fe(1), or iron oxide. This dissertation investigated the factors that influence the decomposition rates of H202 and organic compounds, as well as the

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28

Man, Vincent. "The characteristics of synthetic and natural hydrous iron oxides in aqueous environments." Thesis, University of Plymouth, 1987. http://hdl.handle.net/10026.1/2188.

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The work in this thesis is concerned with the Green Rusts, which are bluegreen metastable Fe(II) - Fe(III) hydroxy compounds incorporating anions such as SO42-, Cl- or CO3-. These Green Rust compounds (or Fe-GR compounds to distinguish them from the aluminium Green Rusts (Al-GRs) which are isostructural Fe(II) - Al(III) hydroxy compounds) can be produced in a consistent fashion from Fe(II) solutions by the method of induced hydrolysis using Fe(III) gel at pH 7 and under anoxic conditions. A series of sulphate and chloride Fe-GR samples were synthesised, and characterised primarily by the analy

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29

Teggart, Brian Joseph. "Fabrication, characterisation and magneto-optical enhancement of thin film BiGa : Dy iron garnet." Thesis, Queen's University Belfast, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287432.

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30

Chukwuchendo, Emmanuel Chukwunonso. "Bio-oxidation of ferrous iron at low temperature conditions in a packed bed column bioreactors." Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2545.

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Thesis (MTech (Chemical Engineering))--Cape Peninsula University of Technology, 2016.<br>The oxidation of microbial ferrous iron is an important sub-process in the bioleaching process. Several studies focussing on microbial ferrous iron oxidation have been investigated and reported in various studies. These studies were carried out using stirred tank bioreactors and shake flasks at optimum conditions. However, these studies could not describe the context of heap bioleach system. Packed column system may describe heap bioleaching, and most studies on microbial ferrous iron oxidation were perfor

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31

Cerkez, Elizabeth B. "Investigations of Surface Redox Chemistry on Environmentally Relevant Iron Oxides and Sulfides." Diss., Temple University Libraries, 2016. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/383744.

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Chemistry<br>Ph.D.<br>Important reactions in the environment often occur at the interface between a mineral surface and aqueous phase. Reactions occurring at this interface often control the uptake or release of harmful components resulting in the geochemical cycling of elements in the environment. Additionally, minerals are commonly used in the remediation of contaminated areas, where similar chemistry occurs at their interfaces. Thus, studies of the chemistry of these interfaces are essential to our understanding of complex environments. Many of these processes are controlled by electron tra

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32

Carrasco, Naraya. "Influence of surfactants on siderophore-promoted dissolution of iron oxides /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17262.

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33

Jarlbring, Mathias. "Surface reactions in aqueous suspensions of fluorapatite and iron oxides /." Luleå : Luleå University of Technology, 2006. http://epubl.ltu.se/1402-1544/2006/05/index.html.

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34

Porter, J. T. "The preparation and characterisation of iron oxides : Colloids and powders." Thesis, University of Exeter, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384726.

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35

Church, Nathan Stewart. "Magnetic properties of iron-titanium oxides and their nanoscale intergrowths." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609524.

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36

Potapova, Elisaveta. "Studies on the adsorption of flotation collectors on iron oxides /." Luleå : Luleå university of technology, 2009. http://pure.ltu.se/ws/fbspretrieve/3359292.

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37

Wu, Si Hyun Goyne Keith William Lerch Robert N. "Adsorption of isoxaflutole degradates to hydrous aluminum and iron oxides." Diss., Columbia, Mo. : University of Missouri--Columbia, 2009. http://hdl.handle.net/10355/6598.

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Title from PDF of title page (University of Missouri--Columbia, viewed on Feb 24, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Thesis advisors: Dr. Keith W. Goyne and Dr. Robert N. Lerch. Includes bibliographical references.

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38

Cheng, Wei. "Fate and transport of quinolones at iron oxides/water interface." Thesis, Rennes, Ecole nationale supérieure de chimie, 2019. http://www.theses.fr/2019ENCR0058.

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En raison de leur utilisation accrue, de nombreux contaminants émergents, comme les antibiotiques de type quinolone sont retrouvés dans l’environnement. Leur devenir étant fortement contrôlé par leur interaction avec surfaces minérales, cette thèse a eu pour objectif de comprendre et prédire l’adsorption de quinolones sur des minéraux dans des conditions environnementales variées (pH, salinité, présence de cations et d’anions naturels, etc…) et de développer des modèles de transport réactif. Une approche innovante a alors été développée, combinant des données cinétiques et thermodynamiques, de

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39

Pang, Kwan-Nang. "Origin of the permian panzhihua layered gabbroic intrusion and the hosted Fe-Ti-V oxide deposit, Sichuan Province, SW China." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B39634000.

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40

Sim, Andrew Gregory Chemical Sciences &amp Engineering Faculty of Engineering UNSW. "Reduction-oxidation cycling of metal oxides for hydrogen production." Awarded By:University of New South Wales. Chemical Sciences & Engineering, 2010. http://handle.unsw.edu.au/1959.4/44763.

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A process for the production of clean hydrogen from methane based upon the sequential reduction and oxidation of metal oxides has been studied. The original process, based on iron oxide, suffers from significant disadvantages including deactivation by sintering and coke deposition. Improvement of the iron based system and identification and development of alternative metal oxides for hydrogen production has formed the basis of this study. The literature review outlines current methods for hydrogen production, followed by a review of the Steam-Iron Process as an improved and simpler method for

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41

Gonzalez, Lucena Fedora. "Mineral Magnetism of Environmental Reference Materials: Iron Oxyhydroxide Nanoparticles." Thesis, Université d'Ottawa / University of Ottawa, 2010. http://hdl.handle.net/10393/19608.

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Iron oxyhydroxides are ubiquitous in surface environments, playing a key role in many biogeochemical processes. Their characterization is made challenging by their nanophase nature. Magnetometry serves as a sensitive non-destructive characterization technique that can elucidate intrinsic physical properties, taking advantage of the superparamagnetic behaviour that nanoparticles may exhibit. In this work, synthetic analogues of common iron oxyhydroxide minerals (ferrihydrite, goethite, lepidocrocite, schwertmannite and akaganéite) are characterized using DC and AC magnetometry (cryogenic, room

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42

Reeves, N. J. "Studies on the hydrolysis of iron (III) in the presence of growth modifiers." Thesis, University of Bath, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357406.

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43

Kriedemann, Brett Craig. "The critical process conditions for controlled growth of iron oxide nanoparticles synthesized using continuous hydrothermal synthesis." Thesis, Cape Peninsula University of Technology, 2014. http://hdl.handle.net/20.500.11838/920.

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Thesis Submitted in Fulfilment of the Requirements for the Degree Master of Technology: Chemical Engineering in the Faculty of Engineering at the Cape Peninsula University of Technology 2014<br>Iron oxide nanoparticles have recently become attractive for use in gas sensing, as catalysts and have also shown promise in other fields, such as biomedicine, for targeted drug delivery and cancer treatment. Despite these growing applications, the ability to produce iron oxide and one dimensional (1D) iron oxide nanoparticles on an industrial scale has proven to be a challenge. The continuous hydro

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44

Zhang, Zili. "The effect of sulfur on chemical looping combustion with iron oxides." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/25534.

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Advancing climate change poses an increasing threat to humanity, together with the higher demand for energy around the world. New 'cleaner' technologies for the production of energy from solid fuels (coal or biomass) via thermo-chemically viable routes are required. Chemical looping combustion (CLC) is a process concept using metal oxide (oxygen carrier) for transportation of oxygen from air for electrical power generation and inherent production of a pure stream of CO2. CLC has been generally applied to gaseous fuel; however, by integrating chemical looping and gasification, the combined proc

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45

Benaiges-Fernandez, Robert. "Bioreduction of iron (hydr)oxides from mine tailings under marine conditions." Doctoral thesis, Universitat de Barcelona, 2021. http://hdl.handle.net/10803/673411.

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Mining industry faces environmental problems concerning waste management. Given the environmental issues associated with storage of mine wastes on land, one disposal option that has gained attraction is submarine tailings disposal (STD). This practice involves disposal of mine tailings under seawater through underwater pipelines. Discharged mine wastes may be geochemically altered by microbial communities that living in the seabed have an ecophysiology that is compatible with the mine tailings. These communities (e.g., Shewanella, Geobacter) would be able to reduce the structural Fe(III) of ox

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46

Gorshe, Dominik S. "Synthesis and thermodynamic and kinetic characterization of meta-stable iron oxides /." The Ohio State University, 1998. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487951595501567.

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47

Zurkiya, Omar. "Magnetic Resonance Molecular Imaging Using Iron Oxide Nanoparticles." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/19848.

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Magnetic resonance imaging (MRI) is regularly used to obtain anatomical images, greatly advancing biomedical research and clinical health care today, but its full potential in providing functional, physiological, and molecular information is only beginning to emerge. The goal of magnetic resonance molecular imaging is to utilize MRI to acquire information on the molecular level. This dissertation is focused on ways to increase the use of MRI for molecular imaging using superparamagnetic iron oxide (SPIO) nanoparticle induced MRI contrast. This work is divided into three main sections: <B>1)<I>

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48

Coetsee, Theresa. "Non-isothermal reaction of iron ore-coal mixtures." Pretoria : [s.n.], 2007. http://upetd.up.ac.za/thesis/available/etd-07092008-142912/.

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49

Lei, Yun School of Chemical Engineering &amp Industrial Chemistry UNSW. "Novel Fe2O3-Cr2O3 catalyst for high temperature water gas shift reaction." Awarded by:University of New South Wales. School of Chemical Engineering and Industrial Chemistry, 2005. http://handle.unsw.edu.au/1959.4/23321.

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The thesis is focused on the study of high temperature water gas shift catalysis, the identification of new improved catalysts and the study of the kinetics and mechanism of reaction over these catalysts. Rh-promoted Fe2O3-Cr2O3 was found to offer best performance which was significantly better than unpromoted catalyst over wide temperatures range. An extensive literature survey is first reported. Guidelines to develop new WGS catalysts are developed. As a result, the activities of precious metals supported on various oxides for high temperature WGS reaction have been tested. Rh(1wt%) doped Fe

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50

FLORIO, DANIEL Z. de. "Analise de eletrolitos de ZrO sub(2):Y sub(2) O sub(3) + B sub(2) O sub(3) e de eletrodos de La sub(0,8) Sr sub(0,2) Co sub (0,8) Fe sub (0,2) O sub (3-delta) por espectroscopia de impedancia." reponame:Repositório Institucional do IPEN, 2003. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11130.

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Made available in DSpace on 2014-10-09T12:48:42Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:59:46Z (GMT). No. of bitstreams: 1 09305.pdf: 5404217 bytes, checksum: 19eda8ad49f8cd247304fef0fb69c1bc (MD5)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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