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Showing 1 to 20 of 47 for “"CuCl"”.
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Evaluation of the effects of molten CuCl on corrosion resistant coatings
… of a hydrogen production pilot plant using the CuCl thermochemical cycle are being proposed. Currently researchers are facing several challenges to bring this pilot plant in operation. One of the important challenges is to develop materials for the containment vessels and pipes that will …
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Heat and fluid flow analysis in a molten CuCl heat exchanger
… transfer heat are; oxygen, hydrogen, and molten CuCl. The heat carried by oxygen and hydrogen can be recovered by the use of conventional heat exchangers. However, recovering heat from molten CuCl is very challenging due to the phase transformations that molten CuCl undergoes, as it cools down …
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Growth and characterisation of thin films of CuCl and related materials
CuCl thin films grown on (100) Si by thermal evaporation are studied by means of low temperature photoluminescence (PL) and reflectance spectroscopies. Spatially and wavelength resolved room temperature cathodoluminescence (CL) imaging of the surface of the CuCl samples in a scanning electron …
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Ground states of a two-dimensional frustrated quantum antiferromagent Cs₂CuCl₄
… theory. Among the quantum antiferromagnets, Cs₂CuCl₄ gains attention as one of the candidates for materials with ground state spin liquid phase. The recent experimental results show that there exist several ground state phases in the presence of magnetic field which cannot be explained with …
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Synthesis and characterization of nanocrystalline CuCl hybrid films for electroluminescent device fabrication.
Cuprous (I) chloride (CuCl) is an intensively studied inorganic material, particularly for its excitonic related linear/nonlinear optical processes. This is due in large measure to its very large excitonic binding energies (~190 meV) which are much larger than those of IIIV and IIVI semiconductors …
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The production and characterization of ceramic carbon electrode materials for CuCl-HCl electrolysis.
… heat to drive two thermochemical steps creating CuCl as well as O2 gas and HCl from CuCl2 and water. The CuCl is oxidized in HCl to produce H2 gas and regenerate CuCl2, this process occurs at potentials well below those required for water electrolysis. The electrolysis process occurs in a …
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Continuous Co-Separation by Liquid Absorption in Aqueous Cuprous Chloride (CuCl) and Magnesium Chloride (MgCl2) Solution
… based on the COSORB process, consisted of CuCl mixed with a complexing agent (metal tri-chloride) and a solvent (metal tetra-chloride, toluene, ethanol, etc.). The best method consisted of an aqueous solution of CuCl and MgCl2, which has previously been used for CO absorption experiments …
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Evaluation of the microstructural, electronic and optoelectronic properties of ƴ-CuCl thin films and their fabrication on Si substrates
… binding energy (~ 190 meV). In this study, CuCl has been deposited by the vacuum evaporation method on a variety of substrates (amorphous silica glass, indium tin oxide (ITO) coated on glass and Silicon (100)) substrates, encapsulated and characterized as a potential material for …
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Study of the effect of molten CuCl immersion test on alloys with high Ni-content with and without surface coatings
… of materials for the pipes transporting molten CuCl is an important parameter for an economic design of a commercial thermochemical Cu-Cl hydrogen plant. This research is an examination of candidate materials following an immersion test in molten CuCl at 500 °C for 100 h. Two alloys, Ni based …
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Novel ultra-violet/blue optoelectronic materials and devices based on copper halides (CuHa)
… use of the Copper Halides (CuHa), specifically γ-CuCl and γ-CuBr, I–VII wide band gap mixed ionic–electronic semiconducting materials with light emitting properties suitable for novel UV/blue light applications. This project details novel research carried out towards achieving single crystal …
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Optimisation and fabrication of ultra violet emitting CuC1 thin films by RF sputtering
Wide direct band gap CuCl is a promlslng candidate for the next generation Si based optoelectronics, thanks to its excellent properties such as high excltonic binding energy (190 meV) and a close lattice matching with Si. In this thesis, growth of CuCl using RF magnetron sputtering is investigated …
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Integrated heat pump options for heat upgrading in Cu-Cl cycle for hydrogen production
… address this demand by using a cuprous chloride (CuCl) vapor compression heat pump cascaded with a mercury heat pump as a first option, and cascaded with a biphenyl heat pump as a second option. These cascaded heat pumps are meant to upgrade heat from nuclear power plants with a heat input of …
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Negative Thermal Expansion in Zincblende Structure: an EXAFS study of CdTe
… has NTE properties intermediate between Ge and CuCl. In this work an accurate evaluation of the bond thermal expansion, parallel and perpendicular MSRDs and distribution asymmetry of the first shell of CdTe has been made, obtaining a good agreement between two different procedures of the data …
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Investigation of doped cuprous halides for photovoltaic and display applications
… and characterisation of the Zn doped n-type CuCl and oxygen doped p-type CuBr with higher carrier concentration using pulsed dc magnetron sputtering and thermal evaporation followed by oxygen plasma exposure, respectively. The structural and morphological properties of the n-type Zn doped …
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Electronic Properties of Cuprous-Chloride and Cuprous-Bromide
… to suspect that recent anomalies observed in CuCl are due to the pure material. Defects and impurities in CuCl are studied to determine the role they may play. Oxygen is found to be the most likely impurity to contribute to the observed anomalies. Calculations show it may pressure ionize to …
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Electronic properties of cuprous chloride and cuprous bromide
… to suspect that recent anomalies observed in CuCl are due to the pure material. Defects and impurities in CuCl are studied to determine the role they may play. Oxygen is found to be the most likely impurity to contribute to the observed anomalies. Calculations show it may pressure ionize to …
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System for evaluating effects of immersion in molten copper chloride salts on corrosion resistant coatings
… coatings following an immersion test in molten CuCl at 500°C for a prolonged time. Medium carbon steel was selected as the base metal. There were six types of combination coatings applied to evaluate the corrosion resistance of the generated coatings during the molten CuCl exposure…
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Lewis acid catalysis in organic synthesis
… of azides to terminal alkynes using CuCl-RTIL. This catalytical system gives only 1,4-disubstituted 1,2,3-triazoles. Reactions of Alkyl and aryl azides with a variety of terminal alkynes were successfully catalyzed using CuCl-RTIL catalytic system. This catalytic system has the …
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Theoretical and experimental investigation of chemical pattern etching
… chloride solutions. It was found that for a 3.5M CuCl$\sb2$ + 0.5M HCl + 0.5M KCl etching solution a salt film precipitated on the entire metal surface and dissolution was controlled by mass transfer of the products. The presence of recirculating eddies at the corners added extra resistance to …
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The synthesis of sterically demanding ligands and examples of their copper complexes
… moiety have been synthesized and isolated. The LCuCl complex (92% isolated yield) was made via a one-pot synthesis from the corresponding imidazolinium tetrafluoroborate salt, NaH, and CuCl (L = [1,3-bis-(2,4,6,2",4",6"-hexaisopropyl- [1,1':3',1"]terphenyl-5'-yl)-4,5-dihydroimidazol-2-ylidene]). …
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