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Journal articles on the topic 'Copper chromite'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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1

George, Reni, and Sankaran Sugunan. "Synthesis and Characterization of Magnesium Copper Chromite Spinels." International Journal of Scientific Research 3, no. 1 (2012): 44–45. http://dx.doi.org/10.15373/22778179/jan2014/14.

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2

Prasad, R. "Highly active copper chromite catalyst produced by thermal decomposition of ammoniac copper oxalate chromate." Materials Letters 59, no. 29-30 (2005): 3945–49. http://dx.doi.org/10.1016/j.matlet.2005.07.041.

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3

Kawamoto, Aparecida M., Luiz Claudio Pardini, and Luis Claudio Rezende. "Synthesis of copper chromite catalyst." Aerospace Science and Technology 8, no. 7 (2004): 591–98. http://dx.doi.org/10.1016/j.ast.2004.06.010.

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4

Dunham, A. C., and F. C. F. Wilkinson. "Sulphide droplets-and the Unit 11/12 chromite band, Rhum: a mineralogical study." Geological Magazine 122, no. 5 (1985): 539–48. http://dx.doi.org/10.1017/s0016756800035457.

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AbstractA microscopic and electron microprobe investigation has been made of six samples of the allivalite–chromitite–peridotite band at the junction of Units 11 and 12, Eastern Layered Series, Rhum. Analyses are presented of olivine, plagioclase and pyroxene, the plagioclase showing reverse zoning in the chromitite. Sulphide droplets occur within and above the chromitite, and contain pyrrhotite, pentlandite, cubanite, bornite, digenite, chalcocite, native copper and electrum, as well as chromite zoned to magnetite, spinel and ilmenite. The variation from aluminous chromite to chromite in the

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5

Hall, J. B., and J. K. Kouba. "Electron Microscopy of Barium-Promoted Copper Chromite." Proceedings, annual meeting, Electron Microscopy Society of America 43 (August 1985): 390–91. http://dx.doi.org/10.1017/s0424820100118825.

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Copper chromite was reported as an effective catalyst for the hydrogenation of esters to alcohols by Homer Adkins in 1931, and it still remains the catalyst of choice for this reaction. Its most common commercial application is in the hydrogenation of fatty esters to detergent range linear alcohols. Typical reaction conditions are relatively severe: 200-250°C and 2000-4000 psig hydrogen. Barium is often used as a promoter and such a catalyst is prepared by codeposition of barium and copper chromates followed by calcination to the mixed chromite. The catalyst is usually activated by reduction w

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6

Reactions of allylic alcohols, V., R. Hubaut, M. Daage, and J. P. Bonnelle. "Selective hydrogenation on copper chromite catalysts." Applied Catalysis 22, no. 2 (1986): 243–55. http://dx.doi.org/10.1016/s0166-9834(00)82633-0.

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7

Monconduit, Laure, Nabil Allali, Annie Leblanc, and Michel Danot. "Lithium intercalation into copper ferrite and copper chromite: Redox extraction of copper." Materials Research Bulletin 27, no. 7 (1992): 839–46. http://dx.doi.org/10.1016/0025-5408(92)90179-4.

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8

Khasin, A. V., I. I. Simentsova, and T. M. Yurieva. "Interaction of hydrogen with copper chromite surface." Reaction Kinetics & Catalysis Letters 52, no. 1 (1994): 113–18. http://dx.doi.org/10.1007/bf02129858.

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9

Simentsova, I. I., A. V. Khasin, and T. M. Yurieva. "Character of hydrogen interaction with copper chromite." Reaction Kinetics & Catalysis Letters 58, no. 1 (1996): 49–56. http://dx.doi.org/10.1007/bf02071104.

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10

Sansare, S. D., V. R. Choudhary, and L. K. Doraiswamy. "Reversible adsorption of thiophene on copper chromite." Journal of Chemical Technology and Biotechnology. Chemical Technology 33, no. 3 (2007): 140–44. http://dx.doi.org/10.1002/jctb.504330305.

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11

Hanic, F., G. Plesch, P. Dolezel, and J. Ovecková. "Study of copper chromite catalysts, III. Structure and catalytic activity of copper chromite catalyst in reductive alkylation reaction." Reaction Kinetics and Catalysis Letters 32, no. 2 (1986): 393–98. http://dx.doi.org/10.1007/bf02068341.

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12

Li, Zeng Xin, Guo Ming Wang, and Qiang Liang. "The Comparison of Three Recycling Processes of Copper Chromite Spent Catalysts." Advanced Materials Research 599 (November 2012): 566–69. http://dx.doi.org/10.4028/www.scientific.net/amr.599.566.

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Three technologies of recycling copper chromite spent catalysts from furfuryl production by furfural hydrogenization were developed. After the organic species was removed from the solid waste by vacuum pressure distillation at 130°C, the resultant solid waste catalyst was mixed with soda ash, followed by roasting, leaching and removing silicon in a reverberating furnace to obtain sodium chromate. Dissolving the cupric oxide in soda ash solution to remove chrome and then dissolving it in nitric acid, cupric nitrate can be obtained. A certain proportion of such sodium chromate and cupric nitrate

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13

Khasin, A. A., T. M. Yur’eva, L. M. Plyasova, et al. "Mechanistic features of reduction of copper chromite and state of absorbed hydrogen in the structure of reduced copper chromite." Russian Journal of General Chemistry 78, no. 11 (2008): 2203–13. http://dx.doi.org/10.1134/s1070363208110418.

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14

Bianchi, C. L., M. G. Cattania, and V. Ragaini. "XPS study on barium-promoted copper chromite catalysts." Surface and Interface Analysis 19, no. 1-12 (1992): 533–36. http://dx.doi.org/10.1002/sia.740190199.

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15

Rao, R., A. Dandekar, R. T. K. Baker, and M. A. Vannice. "Properties of Copper Chromite Catalysts in Hydrogenation Reactions." Journal of Catalysis 171, no. 2 (1997): 406–19. http://dx.doi.org/10.1006/jcat.1997.1832.

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16

Krieger, T. A., L. M. Plyasova, L. P. Solovyeva, T. M. Yur'eva, and O. V. Makarova. "The Structure of Copper Chromite Activated by Hydrogen." Materials Science Forum 228-231 (July 1996): 627–32. http://dx.doi.org/10.4028/www.scientific.net/msf.228-231.627.

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17

Basak, D., and J. Ghose. "Infrared studies on some substituted copper chromite spinels." Spectrochimica Acta Part A: Molecular Spectroscopy 50, no. 4 (1994): 713–18. http://dx.doi.org/10.1016/0584-8539(94)80008-1.

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18

Meksh, P. A., A. A. Anderson, and M. Shimanska. "Synthesis of nitrogen containing heterocycles over copper chromite." Chemistry of Heterocyclic Compounds 30, no. 7 (1994): 822–28. http://dx.doi.org/10.1007/bf01169640.

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19

Widiyarti, Galuh. "Karakterisasi Katalis Cu-Cr /Kieselguhr." REAKTOR 5, no. 1 (2017): 12. http://dx.doi.org/10.14710/reaktor.5.1.12-15.

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Copper-chromite active metal catalyst was prepared by using impregnation method with kieselguhr (Al2O3SiO2) as supporting material. The content of metal active was 20% with 1:1 proportion of complex metal Cu : Cr. The specific surface area of catalyst gave specific surface area of 2,537 m2/ gram. X-ray Diffraction analysis, shown that active metal of Cu-copper Cu and cristobalite SiO2. Temperature program analysis, shown that reduction temperature of catalyst was 300 0Cusing by Scanning Electronic Microscope (SEM), the morphology of catalyst was determined.Keyword : Copper-Chromite catalyst, i

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20

Santacesaria, E., G. Carotenuto, R. Tesser, and M. Di Serio. "Ethanol dehydrogenation to ethyl acetate by using copper and copper chromite catalysts." Chemical Engineering Journal 179 (January 2012): 209–20. http://dx.doi.org/10.1016/j.cej.2011.10.043.

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21

Plyasova, L. M., I. Yu Molina, T. A. Krieger, L. P. Davydova, and T. M. Yurieva. "Structure transformations of copper chromite under reduction–reoxidation conditions." Journal of Molecular Catalysis A: Chemical 158, no. 1 (2000): 331–36. http://dx.doi.org/10.1016/s1381-1169(00)00100-x.

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22

Kaya, Ismail C., and Hasan Akyildiz. "Production and Characterization of Magnesium-Doped Copper Chromite Fibers." physica status solidi (a) 215, no. 16 (2017): 1700795. http://dx.doi.org/10.1002/pssa.201700795.

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23

Murthy, K. S. R. C., and J. Ghose. "CO Oxidation on Substituted Copper Chromite Spinel Oxide Catalysts." Journal of Catalysis 147, no. 1 (1994): 171–76. http://dx.doi.org/10.1006/jcat.1994.1127.

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24

PILLAI, R. B. C. "ChemInform Abstract: Reactions of Benzyl Alcohol over Copper Chromite." ChemInform 29, no. 25 (2010): no. http://dx.doi.org/10.1002/chin.199825106.

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25

Prasad, R., and Pratichi Singh. "A Review on CO Oxidation Over Copper Chromite Catalyst." Catalysis Reviews 54, no. 2 (2012): 224–79. http://dx.doi.org/10.1080/01614940.2012.648494.

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26

Hayashi, Shinsuke, Kenji Fukaya, and Hajime Saito. "Sintering of lanthanum chromite doped with zinc or copper." Journal of Materials Science Letters 7, no. 5 (1988): 457–58. http://dx.doi.org/10.1007/bf01730687.

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27

CASTIGLIONI, G., A. VACCARI, G. FIERRO, et al. "Structure and reactivity of copper-zinc-cadmium chromite catalysts." Applied Catalysis A: General 123, no. 1 (1995): 123–44. http://dx.doi.org/10.1016/0926-860x(94)00237-1.

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28

Choudhary, Vasant R., and K. R. Srinivasan. "Kinetics of desorption of hydrogen from copper chromite catalyst." Journal of Chemical Technology and Biotechnology. Chemical Technology 33, no. 5 (2007): 271–80. http://dx.doi.org/10.1002/jctb.504330509.

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29

Deng, Kui Lin, Wen Hui Jin, Fu Chen Zhang, et al. "Preparation and Characterization of Dioxanone and Poly(dioxanone)." Advanced Materials Research 711 (June 2013): 22–25. http://dx.doi.org/10.4028/www.scientific.net/amr.711.22.

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In this paper, the ammonium dichromate and copper nitrate were used as raw materials to prepare the copper chromite, and nanocopper chromite as a catalyst was used to synthesize the monomer dioxanone in diethylene glycol dehydrogenation. Under the strict conditions of no water and no oxygen, the stannous octoate was selected to catalyze ring-opening polymerization of the dioxanone to prepare the polydioxanone. And dioxanone and its polymers were characterized with IR spectroscopy,1H NMR spectroscopy, thermogravimetric analysis (TG) and differential scanning calorimetry (DSC ) measurements.

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30

Khasin, A. V., I. I. Simentsova, and T. M. Yur’eva. "Moderate-temperature reduction of copper chromite by hydrogen and hydrogen desorption from the surface of reduced chromite." Kinetics and Catalysis 41, no. 2 (2000): 282–86. http://dx.doi.org/10.1007/bf02771431.

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31

Fedorov, M. S., L. N. Ertseva, and L. B. Tsymbulov. "Corrosive Interaction between Slags High in Copper and Nickel Oxides and Periclase, Periclase-Chromite, and Chromite Refractories." Refractories and Industrial Ceramics 46, no. 5 (2005): 309–14. http://dx.doi.org/10.1007/s11148-006-0003-3.

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32

Paulose, Sanoop, Deepthi Thomas, T. Jayalatha, R. Rajeev, and Benny K. George. "TG–MS study on the kinetics and mechanism of thermal decomposition of copper ethylamine chromate, a new precursor for copper chromite catalyst." Journal of Thermal Analysis and Calorimetry 124, no. 2 (2016): 1099–108. http://dx.doi.org/10.1007/s10973-015-5207-7.

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33

Laine, Jorge, Joaquin Brito, Francisco Severino, et al. "Surface copper enrichment by reduction of copper chromite catalyst employed for carbon monoxide oxidation." Catalysis Letters 5, no. 1 (1990): 45–54. http://dx.doi.org/10.1007/bf00772092.

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34

Madhavi Latha, B., V. Sadasivam, and B. Sivasankar. "A highly selective synthesis of pyrazine from ethylenediamine on copper oxide/copper chromite catalysts." Catalysis Communications 8, no. 7 (2007): 1070–73. http://dx.doi.org/10.1016/j.catcom.2006.06.007.

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35

Ye, Ming Quan, Ai Jun Han, Zhou Shuo Chu, Jian Fei Che, and Chen Wang. "Synthesis and Characterization of Mn-Doped Copper Chromite Black Pigments." Advanced Materials Research 602-604 (December 2012): 71–75. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.71.

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Mn-doped black pigments CuMnxCr2-xO4(x=0, 0.05, 0.10, 0.15, 0.20 and 0.25) were synthesized by precursor coprecipitation method, and characterized by TG-DTA, XRD, FTIR and colorimetric analysis. The TG-DTA curves showed the crystal transition temperature was at about 800°C and mass loss ended at about 450°C. The infrared spectra displayed vibrations of spinel phase. XRD patterns displayed the characteristic peaks of the tetragonal phase spinel structure and proved that Mn substituted Cr in the spinel crystal lattice. L*a*b* analysis showed that all samples are black pigments with blue intensit

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36

Roy, S., and J. Ghose. "Syntheses and studies on some copper chromite spinel oxide composites." Materials Research Bulletin 34, no. 7 (1999): 1179–86. http://dx.doi.org/10.1016/s0025-5408(99)00109-9.

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37

MEKSH, P. A., A. A. ANDERSON, and M. SHIMANSKA. "ChemInform Abstract: Synthesis of Nitrogen-Containing Heterocycles on Copper Chromite." ChemInform 26, no. 18 (2010): no. http://dx.doi.org/10.1002/chin.199518067.

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38

Edrissi, M., S. A. Hosseini, and M. Soleymani. "Synthesis and characterisation of copper chromite nanoparticles using coprecipitation method." Micro & Nano Letters 6, no. 10 (2011): 836. http://dx.doi.org/10.1049/mnl.2011.0430.

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39

Deutsch, Keenan L., and Brent H. Shanks. "Hydrodeoxygenation of lignin model compounds over a copper chromite catalyst." Applied Catalysis A: General 447-448 (December 2012): 144–50. http://dx.doi.org/10.1016/j.apcata.2012.09.047.

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40

Pillai, R. B. C. "A study of the preactivation of a copper chromite catalyst." Catalysis Letters 26, no. 3-4 (1994): 365–71. http://dx.doi.org/10.1007/bf00810610.

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41

Egorova, Marina. "PREPARATION AND PROPERTIES OF FERRITE AND CHROMITE OF COPPER (II)." University News. North-Caucasian Region. Technical Sciences Series, no. 2 (June 2021): 69–74. http://dx.doi.org/10.17213/1560-3644-2021-2-69-74.

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42

V. H. Martirosyan, M. E. Sasuntsyan, and V. V. Savich. "OBTAINING OF FERROSILICOCHROMIUM POWDER ALLOY BY SILICOTHERMIC REDUCTION AND STUDY OF THE MECHANISM OF THIS PROCESS." International Academy Journal Web of Scholar 1, no. 1(31) (2019): 11–17. http://dx.doi.org/10.31435/rsglobal_wos/31012019/6307.

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    The process of obtaining a powder ferrosilicochromic alloy by the method of silicothermic reduction of local chromites and slags of copper smelters was investigated. The mechanism of this process has been studied. It is established that the best results are obtained in the case of slag / chromite ratio = 1: 1, when an alloy with microdispersed structure and high strength is obtained. The optimum composition of the resulting alloy is as follows: 35,1% Fe; 36,35% Si and 28,53% Cr, with a metal yield of 98,4%. The obtained alloy powder can be used as an acidified and a

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43

Patil, Prajakta R, V. N. Krishnamurthy, and Satyawati S Joshi. "Effect of Nano-Copper Oxide and Copper Chromite on the Thermal Decomposition of Ammonium Perchlorate." Propellants, Explosives, Pyrotechnics 33, no. 4 (2008): 266–70. http://dx.doi.org/10.1002/prep.200700242.

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44

Tagliaferro, F. S., E. A. N. Fernandes, M. A. Bacchi, and E. A. Campos. "INAA for the validation of chromium and copper determination in copper chromite by infrared spectrometry." Journal of Radioanalytical and Nuclear Chemistry 269, no. 2 (2006): 403–6. http://dx.doi.org/10.1007/s10967-006-0398-9.

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45

Govender, Alisa, Abdul Mahomed, and Holger Friedrich. "Water: Friend or Foe in Catalytic Hydrogenation? A Case Study Using Copper Catalysts." Catalysts 8, no. 10 (2018): 474. http://dx.doi.org/10.3390/catal8100474.

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Copper oxide supported on alumina and copper chromite were synthesized, characterized, and subsequently tested for their catalytic activity toward the hydrogenation of octanal. Thereafter, the impact of water addition on the conversion and selectivity of the catalysts were investigated. The fresh catalysts were characterized using X-ray diffraction (XRD), BET surface area and pore volume, SEM, TEM, TGA-DSC, ICP, TPR, and TPD. An initial catalytic testing study was carried out using the catalysts to optimize the temperature and the hydrogen-to-aldehyde ratio—which were found to be 160 °C and 2,

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46

MURTHY, K. S. R. C., and J. GHOSE. "ChemInform Abstract: CO Oxidation on Substituted Copper Chromite Spinel Oxide Catalysts." ChemInform 25, no. 31 (2010): no. http://dx.doi.org/10.1002/chin.199431018.

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47

CASTIGLIONI, G. L., A. VACCARI, G. FIERRO, et al. "ChemInform Abstract: Structure and Reactivity of Copper-Zinc-Cadmium Chromite Catalysts." ChemInform 26, no. 28 (2010): no. http://dx.doi.org/10.1002/chin.199528019.

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48

Basak, D., and J. Ghose. "Studies on the Conduction Process of Cadmium-Substituted Copper Chromite Spinels." Journal of Solid State Chemistry 112, no. 2 (1994): 222–27. http://dx.doi.org/10.1006/jssc.1994.1295.

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49

Simentsova, I. I., A. V. Khasin, L. P. Davydova, and T. M. Yurieva. "Kinetics of the medium-temperature reduction of copper chromite with hydrogen." Reaction Kinetics and Catalysis Letters 82, no. 2 (2004): 355–61. http://dx.doi.org/10.1023/b:reac.0000034848.70151.05.

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50

Mane, R. B., A. A. Ghalwadkar, A. M. Hengne, Y. R. Suryawanshi, and C. V. Rode. "Role of promoters in copper chromite catalysts for hydrogenolysis of glycerol." Catalysis Today 164, no. 1 (2011): 447–50. http://dx.doi.org/10.1016/j.cattod.2010.10.032.

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