Relevant bibliographies by topics / Chromium (VI) oxide powder

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Chromium (VI) oxide powder'

Author: Grafiati
Published: 2 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Chromium (VI) oxide powder"

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van Leeuwen, Travis Kent, Ryan Dowdy, Amberly Guerrero, and Paul Gannon. "Reactive Condensation of Cr Vapor on Aluminosilicates Containing Alkaline Oxides." ECS Transactions 112, no. 5 (2023): 29–40. http://dx.doi.org/10.1149/11205.0029ecst.

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This research aims to improve fundamental understanding of the reactive condensation of Chromium (Cr) vapors, which are generated in many high-temperature (>500℃) process environments and can form potentially problematic condensed hexavalent (Cr(VI)) species downstream. . This study focuses on the effects of alkaline oxide additives in aluminosilicate fibers on Cr condensation and speciation. Cr vapors were generated by flowing humid, high-temperature air over chromia (Cr2O3) powder, with aluminosilicate fiber samples positioned downstream. Results indicate presence of hexavalent chromium (
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Liu, Minghui, Zhiwen Tan, Yuantao Zhao, et al. "Optimization of Spray Parameters and Corrosion Properties of Plasma-Sprayed Cr2O3 Coatings Using Response Surface Methodology." Crystals 15, no. 4 (2025): 377. https://doi.org/10.3390/cryst15040377.

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In this study, the experimental design of response surface methodology was used to explore the interaction between spraying parameters to obtain an optimized process to reduce the porosity of the coating, and to prepare an excellent chromium oxide coating. The order of the single parameter affecting porosity is as follows: power > main gas > spraying distance > carrier gas flow. This study found that the spraying process with the lowest porosity of the chromium oxide coating is as follows: power of 625 W, stand-off distance of 105 mm, primary gas of 42.5 lpm, carrier gas flow of 5 lpm
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Khan, Saif Ullah, Rumman Zaidi, Saeikh Z. Hassan, I. H. Farooqi, and Ameer Azam. "Application of Fe-Cu binary oxide nanoparticles for the removal of hexavalent chromium from aqueous solution." Water Science and Technology 74, no. 1 (2016): 165–75. http://dx.doi.org/10.2166/wst.2016.172.

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The adsorption process has been used as an effective technique for the removal of metal ions from aqueous solutions. Groundwater remediation by nanoparticles has received interest in recent years. In the present study, a binary metal oxide of Fe-Cu was prepared and used for the removal of hexavalent chromium from aqueous solution. Batch experiments were performed to investigate the effects of initial Cr (VI) concentration, dose of adsorbent, and pH of solution on the removal efficiency of Cr (VI). The prepared nanostructured Fe-Cu binary oxides were able to reduce the concentration of Cr (VI)
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Muska, M., A. Naeem, M. Hamayun, et al. "Comparative sorption studies of chromate by nano-and-micro sized Fe2O3 particles." Open Chemistry 15, no. 1 (2017): 147–55. http://dx.doi.org/10.1515/chem-2017-0016.

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AbstractThe comparative adsorption studies of Cr (VI) on nano and micro-powder Fe2O3 were investigated using kinetics and batch adsorption techniques. The uptake of chromate onto both the oxides of iron was observed to be dependent on the pH, contact time, temperature, media dosage and concentration of chromate anions. The values of sorption maxima were higher in the case of Fe2O3 nanopowder than the micro-powder which can be ascribed to the high surface area and point of zero charge (PZC) of the former oxide. The Dubinin-Radushkivech and Langmuir models were found well fitted for the descript
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Bisht, Gunjan, Sanjila Neupane, and Rebika Makaju. "Supercritical CO2Assisted Synthesis of EDTA-Fe3O4Nanocomposite with High Adsorption Capacity for Hexavalent Chromium." Journal of Nanomaterials 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/2192647.

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Efficiency of EDTA functionalized nanoparticles in adsorption of chromium (VI) from water was investigated in this study. Magnetic iron oxide nanoparticles (IONPs) were synthesized by a simple chemical coprecipitation route and EDTA coating onto IONPs was attained via supercritical carbon dioxide (Sc CO2), a technology with green sustainable properties. The obtained nanoparticles were then characterized by UV-Visible spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and vibra
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van Leeuwen, Travis Kent, Ryan Dowdy, Amberly Guerrero, and Paul Gannon. "The Influence of Water Concentration on High-Temperature Reactive Evaporation and Condensation of Cr in 800°C Air." ECS Transactions 111, no. 6 (2023): 263–71. http://dx.doi.org/10.1149/11106.0263ecst.

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Reactive evaporation of Cr from stainless steels used in solid oxide electrochemical systems, such as solid oxide fuel cell (SOFC) and solid oxide electrolysis cell (SOEC) systems, is well-documented as the cause of Cr poisoning; however, the condensation and interactions of volatilized Cr species onto and with surrounding interfaces during complex and dynamic system exposures is less understood. Understanding these interactions during operation is critical for improving system performance and safeguarding environmental, health and safety, as some condensed Cr forms toxic hexavalent chromium (
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Jibin, Keloth Paduvilan, Silpa Augustine, Prajitha Velayudhan, et al. "Unleashing the Power of Graphene-Based Nanomaterials for Chromium(VI) Ion Elimination from Water." Crystals 13, no. 7 (2023): 1047. http://dx.doi.org/10.3390/cryst13071047.

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Graphene-oxide-based nanomaterials have gained attention in recent years in the field of heavy metal removal. In this work, graphene oxide (GO) and graphene-oxide-coated silica nanoparticles (GO/SiO2) were synthesized for the efficient removal of Cr(VI) ions from water. Synthesized nanosorbents were characterized by FTIR, Raman spectroscopy, and Transmission Electron Microscopy (TEM). The effects of the pH and the concentration of Cr(VI) ions in adsorption, using GO and GO/SiO2, was studied using the batch process. The results of the study indicated that the maximum removal percentage was show
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Ai, Tian, Xiaojun Jiang, and Qingyu Liu. "Chromium removal from industrial wastewater using Phyllostachys pubescens biomass loaded Cu-S nanospheres." Open Chemistry 16, no. 1 (2018): 842–52. http://dx.doi.org/10.1515/chem-2018-0073.

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AbstractIn this paper, a new surface modification method was reported for the preparation of Phyllostachys pubescens powder as an effective adsorbent for the removal of chromium. Complex copper sulfide (Cu-S)nanospheres were evenly dispersed and loaded into the internal surface of the adsorbent, which provided both the ion exchange and oxidative-reductive properties. The composite showed an excellent adsorption efficacy for Cr(III) and Cr(VI). The surface properties of the obtained materials were characterized by FTIR and SEM. Maximum adsorption for Cr(III) and Cr(VI) was observed at pH 6.1 an
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Branton, Alice, Mahendra Kumar Trivedi, Dahryn Trivedi, Gopal Nayak, and Snehasis Jana. "Assessment of the Effect of Consciousness Energy Healing Treatment on Physicochemical and Thermal Properties of Chromium (VI) Oxide." Journal of Nanotechnology and Materials Science 5, no. 1 (2018): 68–74. https://doi.org/10.15436/2377-1372.18.2024.

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Chromium TriOxide (CrO3) is an inorganic compound which has many industrial applications, but it is very hygroscopic, toxic and a powerful oxidizer. The objective of this study was to evaluate the impact of the Trivedi Effect® (Consciousness Energy Healing Treatment) on the physicochemical and thermal properties of CrO3 using modern analytical techniques. The CrO3 test sample was separated into two parts. One part of the test sample was called as a control sample (no Biofield Energy Treatment was provided), while the second part of chromium trioxide sample received the Consciousness Energy
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Mishra, Shuddhodan P., and Shri Niwash Singh. "Radiotracer technique in adsorption study—part VI. Adsorption of chromate ions on chromium(IV) oxide powder." International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes 38, no. 7 (1987): 541–48. http://dx.doi.org/10.1016/0883-2889(87)90202-4.

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Dissertations / Theses on the topic "Chromium (VI) oxide powder"

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Azad, Neelam. "Molecular mechanisms of chromium (VI)-induced apoptosis and malignant transformation." Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5041.

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Thesis (Ph. D.)--West Virginia University, 2007.<br>Title from document title page. Document formatted into pages; contains ix, 103 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references.
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Bergman, Ola. "Studies of oxide reduction and nitrogen uptake in sintering of chromium-alloyed steel powder." Licentiate thesis, KTH, Materials Science and Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9555.

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<p>The powder metallurgy (PM) process route is very competitive for mass production of structural steel components with complex shape, due to efficient material utilisation, low energy consumption, and short overall production time. The most commonly used alloying elements are the processing friendly metals Cu, Ni and Mo. However, the prices for these metals are today high and volatile, which threatens to make the PM process less competitive compared to conventional metal forming processes. Consequently, there is a strong desire in the PM industry to increase the use of less costly alloying el
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Li, Tao. "Reaction-bonding of Cr←2O←3 ceramics." Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318804.

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Midander, Klara. "Metal Particles – Hazard or Risk? Elaboration and Implementation of a Research Strategy from a Surface and Corrosion Perspective." Doctoral thesis, Stockholm : Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11695.

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Kumari, Ramesh. "Physicochemical investigation on sorption behaviour of 51-Chromium(VI) species at metal oxide-solution interface." Thesis, 1993. http://localhost:8080/iit/handle/2074/3522.

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Maremeni, Londolani Charity. "Macadamia nutshell powder grafted with 1,5’-diphenylcarbizide for enhanced removal of Cr(VI ) from aqueous solution." Thesis, 2018. http://hdl.handle.net/10352/442.

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M. Tech (Department of Chemistry, Faculty of Applied and Computer Sciences) Vaal University of Technology.<br>Agricultural waste such as Macadamia nutshells are currently receiving more attention for removal of hexavalent chromium (Cr(VI)). However, they have low adsorption capabilities when used in their raw form. In this study, the efficiency of using Macadamia nutshell powder modified with different concentrations of hydrogen peroxide, grafted with 1,5’-diphenylcarbizide (DPC) for the removal of hexavalent chromium from aqueous solution was explored. The effects of various parameters contro
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Chen, Yu-Shan, and 陳玉珊. "Removal of chromium(VI) and naphthalenesulfonate by nitrogen-doped TiO2 nano-powder with visible light photocatalysis and membrane electrolysis." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/ps3xay.

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碩士<br>國立臺北科技大學<br>環境工程與管理研究所<br>98<br>This study was proposed for simultaneous oxidization of naphthalenesulfonate(NS) /reduction of chromium(VI) by electron- hole pair (e－-h+) using a novel technology of N-doped TiO2 with visible light photocatalysis. To extend the absorption range of TiO2 into the visible-light region, the simple procedure for preparing nitrogen doped titanium dioxide nanocrystal (TiOxNy) by calcinating the mixture of Degussa P-25 (DP-25) TiO2 and NH4Cl at temperatures of 400 °C under airtight condition. The highest nitrogen content in TiOxNy is 19.22 at. %, occurred in the
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Ouma, Immaculate Linda Achiengꞌ. "Preparation and characterization of Manganese doped iron oxide magnetic nanoparticles coated pine cone powder and its applications in water treatment." Thesis, 2019. http://hdl.handle.net/10352/450.

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D. Tech (Department of Chemistry, Faculty of Applied and Computer Sciences) Vaal University of Technology.<br>Trivalent arsenic (As(III)) and hexavalent chromium (Cr(VI)) toxicity have necessitated a great deal of research into the remediation of contaminated water. The techniques applied including oxidation, coagulation-flocculation and ion exchange have suffered drawbacks due to the high cost of materials and equipment, complex operations and secondary pollution among others. Adsorption, however, remains a cost-effective solution in the remediation of contaminated water. The use of biosorben
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Book chapters on the topic "Chromium (VI) oxide powder"

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Mallela, S. P., Jean'ne M. Shreeve, and Darryl D. DesMarteau. "Chromium(V) Fluoride and Chromium(VI) Tetrafluoride Oxide." In Inorganic Syntheses. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470132609.ch29.

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Accountius, Oliver E., Jack Bush, Harry H. Sisler, and W. F. Luder. "Addition Compounds of Chromium(VI) Oxide." In Inorganic Syntheses. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470132357.ch33.

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Harris, Arlo D., John C. Trebellas, Hans B. Jonassen, Donald F. Clemens, Stephen Frazier, and Harry H. Sisler. "Vanadium(V) Oxide Nitrate and Chromium(VI) Oxide Nitrate." In Inorganic Syntheses. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470132401.ch23.

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Muzart, Jacques, and Abdelaziz N’Ait Ajjou. "Chromium(VI) Oxide Catalyzed Oxidations by Tert-Butylhydroperoxide: Benzylic Oxidation Versus Tert-Butylhydroperoxide Decomposition." In The Activation of Dioxygen and Homogeneous Catalytic Oxidation. Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-3000-8_62.

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Figadère, B., and X. Franck. "With Chromium(VI) Oxide." In Three Carbon-Heteroatom Bonds: Acid Halides; Carboxylic Acids and Acid Salts. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-020-00152.

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Yan, L., S. Lin, and P. Liu. "Using Chromium(VI) Oxide." In Three Carbon-Heteroatom Bonds: Acid Halides; Carboxylic Acids and Acid Salts. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-020-00717.

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Witulski, B., and C. Alayrac. "With Chromium(VI) Oxide." In Aldehydes. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-025-00368.

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Aitken, R. A., and K. M. Aitken. "Using Chromium(VI) Oxide Alone." In Nitro, Nitroso, Azo, Azoxy, and Diazonium Compounds, Azides, Triazenes, and Tetrazenes. Georg Thieme Verlag KG, 2010. http://dx.doi.org/10.1055/sos-sd-041-00097.

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Parrain, J. L., and J. Thibonnet. "Oxidation by Chromium(VI) Oxide." In Ketones. Georg Thieme Verlag KG, 2005. http://dx.doi.org/10.1055/sos-sd-026-00671.

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von Angerer, S. "With Chromium(VI) Oxide in Pyridine." In Ketones. Georg Thieme Verlag KG, 2005. http://dx.doi.org/10.1055/sos-sd-026-00015.

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Conference papers on the topic "Chromium (VI) oxide powder"

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Dudziak, T., E. Rząd, A. Polkowska, et al. "Steam Oxidation Resistance in a Long Term Exposure of the Modified Laser Powder Bed Fusion 699XA Alloy at High Temperature." In AM-EPRI 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.am-epri-2024p0171.

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Abstract This study investigates the steam oxidation behavior of Alloy 699 XA, a material containing 30 wt.% chromium and 2 wt.% aluminum that forms protective oxide scales in low-oxygen conditions. The research compares four variants of the alloy: conventional bulk material, a laser powder bed fusion (LPBF) additively manufactured version, and two modified compositions. The modified versions include MAC-UN-699-G, optimized for gamma-prime precipitation, and MAC-ISIN-699, which underwent in-situ internal nitridation during powder atomization. All variants were subjected to steam oxidation test
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Maeda, Toshihide, and Frans X. Terwijn. "The Effect of Plasma Powder Welded Overlay on Carburization and Coke Formation in Ethylene Pyrolysis Furnace Tubes." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07419.

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Abstract Ethylene pyrolysis furnace tubes with a high-Cr, high-Ni alloy, weld overlaid by Plasma Powder Welding (PPW) technique, were evaluated in a laboratory and in commercial furnaces. These tubes have a thick layer (approx. 2.0mm) of 45 % Cr, 50 % Ni and 1 % Mo alloy welded on the entire inner surface of HP-mod or 35Cr/45Ni base tubes. The carburization behavior of these furnace tubes has been evaluated in the commercial furnaces for over 6 years as well as under accelerated conditions in a laboratory. The results show that if the PPW overlay was applied, no carburization was observed in t
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Fujiwara, Kazutoshi, Keiji Watanabe, Masafumi Domae, and Yosuke Katsumura. "Stability of Chromium Oxide Film Formed by Metal Organic Chemical Vapor Deposition in High Temperature Water up to Supercritical Region." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07411.

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Abstract Chemical stability of Cr2O3 in high temperature water is one of the most important factors for corrosion resistivity. In this study, chemical stability of Cr2O3 was investigated in high temperature water up to critical region. From the immersion tests of the Pt specimens with Cr2O3 film formed by metal organic chemical vapor deposition, following conclusions were obtained. In air-saturated water and DO (dissolved oxygen) 400 ppb water at 623 K, Cr2O3 is oxidized and Cr(VI) ions are stable. In the deaerated solution, metal chromium is stable. Therefore, Cr2O3 is chemically stable under
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Sugahara, Katsuo. "A Ni-45Cr-1Mo Alloy for Industrial Cleaning Agents Such as a Mixture of Nitric and Hydrofluoric Acids." In CORROSION 2006. NACE International, 2006. https://doi.org/10.5006/c2006-06532.

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Abstract Alloy 45Cr1Mo, which is composed of 45% chromium, 1% molybdenum and balance nickel, has been specifically developed with improved corrosion resistance to industrial cleaning agents such as a mixture of nitric and hydrofluoric acids, which is typically used for pickling. The composition of alloy 45Cr1Mo maintains Ni-gamma phase supersaturated solid solution containing small amount of Cr-alpha phase and does not degrade the workability. alloy 45Cr1Mo is easily fabricated into all product forms such as plate, sheet, wire and tube in spite of its high chromium content of 45%, and furtherm
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Thornley, Blake, Anne Neville, Mike Bryant, and Robert Beadling. "Investigation into the Repassivation Kinetics of CoCrMo for Applications in a Simulated Biological Environment." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-13232.

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Abstract The re-passivation kinetics and composition of the passive film of CoCrMo alloys in simulated body fluids have been investigated, with key emphasis being to assess the effect that proteins have on these features. The kinetics were analyzed using potentiostatic polarization, applying a second order exponential decay to the current transients obtained, which consists of two phases: coverage and thickening. Repassivation occurred quickest in a phosphate environment with presence of bovine serum albumin (BSA) hindering the process as it inhibits access of the oxidant. By using X- ray phot
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Luer, K., J. Du Pont, and A. Marder. "High Temperature Sulfidation of Fe3Al and NiCr Thermal Spray Coatings at 600°C." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99298.

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Abstract Three Fe3Al and two Ni45Cr thermal spray coatings were tested in Ar-3.5H2-0.1H2S for 500h at 600°C and compared to AISI 1008 steel. The three Fe3Al-type coatings were processed from the same lot of gas atomized Fe3Al powder using a high velocity oxygen fuel (HVOF) thermal spray process and an air plasma spray (APS) process. In general, the Fe3Al-type composition displayed excellent resistance to sulfidation corrosion at 600°C which correlated with the reported literature on wrought Fe3Al alloys. HVOF processing did not significantly degrade the composition of the consumable and produc
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Behrani, Vikas R., and Preet M. Singh. "Corrosion Behavior of Aluminized and Chromized Carbon Steel in Fluctuating Oxidizing-Sulfidizing Environments." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07209.

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Abstract Recent studies have shown that gaseous environment in the mid furnace of kraft recovery boilers fluctuate between oxidizing and sulfidizing under normal operating conditions. It has also been shown that these fluctuations have significant effect on corrosion by enhancing the spallation of protective oxide scales. As one of the possible methods to control mid furnace corrosion, chromized and aluminized diffusion coatings were developed for carbon steels by pack cementation process using NH4Cl halide activator and elemental Cr or Al powder. Pack cementation was done for different times
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Teeter, Lucas, Martin Detrois, Kyle Rozman, and Chantal K. Sudbrack. "Oxidation and Hydrogen Embrittlement Behavior of Several Additively Manufactured Ni-Based Superalloys." In CONFERENCE 2024. AMPP, 2024. https://doi.org/10.5006/c2024-21117.

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Abstract The environmental degradation of additively manufactured Ni-based superalloys (INCONEL® 625 (IN625), Haynes® 282® (H282), and INCONEL® 718 (IN718)), fabricated by laser powder-bed fusion (L-PBF) and fully heat-treated, is being screened for hydrogen service in industrial gas turbines. Oxidation experiments in air, on printed and machined surface conditions at 750 °C for 164, 500, and 2,010 hours revealed thicker oxides for printed conditions for IN625 and H282 and thicker oxides for machined conditions for IN718. The chromium oxide that developed was thickest for H282 and showed highe
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Pujar, Mohan, Michael Crouse, Albert E. Miller, and Kunigahalli L. Vasanth. "Evaluation of Potassium Permanganate (KMnO4) as a Green Corrosion Inhibitor/Sealant for Anodized Al 2024 and Al 6061 at Different pH Values1." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02410.

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Abstract Increasing awareness about the toxicity, lack of biodegradability, health hazard and carcinogenic character of chromium (VI) or chromate based inhibitors has led to the worldwide research on the suitable alternatives. These alternatives are expected to be environmentally friendly, biodegradable, non-toxic and easily available. Various oxoanion (MO4−n) based inorganic compounds are being studied in this context. Potassium permanganate (KMnO4) is one such inorganic compound, which is used commonly as a green corrosion inhibitor. However, due to the proprietary nature of the field of inh
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Monterde, Mari Carmen, Lucile Bernadet, Jose Antonio Calero, Emilio Jimenez-Piqué, and Marc Torrell. "Novel Interconnects Manufactured By Powder Metallurgy For Solid Oxide Cells Applications." In World Powder Metallurgy 2022 Congress & Exhibition. EPMA, 2022. http://dx.doi.org/10.59499/wp225371861.

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This work presents SOC interconnects produced by powder metallurgy. Ferritic stainless steel and modified-ferritic stainless steel with Y2O3, have been studied as interconnect materials for SOC tested. Chemical composition effect and chromium content, thermal expansion coefficient, oxidation kinetics and area specific resistance were studied and discussed. In this regards, thermogravimetric analysis during 3500h at 800ºC under oxidizing atmosphere are presented and discussed. Moreover, long-term solid oxide electrolyze mode under 0.25 A.cm-2 at 800ºC in Air|90H2O|10H2 for 700h suffer a soft de
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Reports on the topic "Chromium (VI) oxide powder"

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Green, Patrick. The chemistry of chromium (VI) and chromium (V) oxide fluorides. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.5923.

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