6th International Young Scientist Congress (IYSC-2020) will be Postponed to 8th and 9th May 2021 Due to COVID-19. 10th International Science Congress (ISC-2020).  International E-publication: Publish Projects, Dissertation, Theses, Books, Souvenir, Conference Proceeding with ISBN.  International E-Bulletin: Information/News regarding: Academics and Research

The effect of Gas Reaction Mixture on the Performance of CuO/Cu2(OH)3NO3(Co2 /Fe3 ) Composite Catalyst in the CO-PROX Reaction

Author Affiliations

  • 1Kyiv National Taras Shevchenko University, Kyiv 01601, UKRAINE

Res.J.chem.sci., Volume 2, Issue (5), Pages 42-50, May,18 (2012)

Abstract

The effect of gas reaction mixture composition on the performance of CuO/Cu2(OH)3NO3(Co2+/Fe3+) composite catalyst in the CO-PROX reaction was examined. It was shown that the composition of the catalyst, which is formed at the pretreatment stage, changes with the increase of H2 content in the reaction mixture. According to PXRD data the catalyst formed contains two phases: CuO and Cu2(OH)3NO3, except that formed in the reaction mixture with excess of H2 and deficiency of O2, which contains three phases and possesses the lowest catalytic activity. Total CO conversion has been reached at 438 K and the selectivity towards CO oxidation was 94 % at this temperature. However, the composite catalyst has been found to be active and high selective only in the reaction mixture with a small excess of H2. The selectivity towards CO oxidation has been sharply decreased with increase of H2 content in the reaction mixture. The average particle size for composite catalyst studied was found to be about 20 nm. The increase of H2 content in the reaction mixture did not much change the crystallite size of the composite catalyst components.

References

  1. Sonawane V.Y., Mechanistic study of chromium (VI) catalyzed oxidation of benzyl alcohol by polymer supported chromic acid, Res. J. Chem. Sci., 1(1), 111−117 (2011)
  2. Pandey Bh. and Fulekar M.H., Environmental Management - strategies for chemical disaster, Res. J. Chem. Sci., 1(1), 111−117 (2011)
  3. Shivaraju H.P., Preparation and Characterization of Supported Photocatalytic Composite and its Decomposition and Disinfection Effect on Bacteria in Municipal Sewage Water, Res. J. Chem. Sci., 1(2), 56−63 (2011)
  4. Rahul, Mathur A.K. and Balomajumder Ch., Biodegradation of Waste Gas containing Mixture of BTEX by B. Sphaericus, Res. J. Chem. Sci., 1(5), 52−60 (2011)
  5. Thakur P.K., Rahul, Mathur A.K. and Balomajumder Ch., Biofiltration of Volatile Organic Compounds (VOCs) − An Overview, Res. J. Chem. Sci., 1(8), 83-92 (2011)
  6. Sirichaiprasert K., Luengnaruemitchai A. and Pongstabodee S., Selective oxidation of CO to CO2 over Cu–Ce–Fe–O composite-oxide catalyst in hydrogen feed stream, Int. J. Hydrogen Energy, 32, 915−926 (2007)
  7. Ayastuy J.L., Gurbani A., Gonzalez−Marcos M.P. and Gutierrez-Ortiz M.A., Effect of copper loading on copper-ceria catalysts performance in CO selective oxidation for fuel cell applications, Int. J. Hydrogen Energy, 35, 1232−1244 (2010)
  8. Zhao Zh., Lin X., Jin R., Dai Y, Wang G., High catalytic activity in CO PROX reaction of low cobalt-oxide loading catalysts supported on nano-particulate CeO2−ZrO2 oxides, Catal. Commun., 12, 1448-1451 (2011)
  9. Veselovskyi V.L., Ischenko E.V., Gayday S.V. and Lisnyak V.V., A high efficient two phase CuO/Cu2(OH)3NO3(Co2+/Fe3) composite catalyst for CO-PROX reaction, Catal. Commun., 18, 137−141 (2012)
  10. Qiao B., Zhang J., Liu L. and Deng Y., Low-temperature prepared highly effective ferric hydroxide supported gold catalysts for carbon monoxide selective oxidation in the presence of hydrogen, Appl. Cat. A: Gen., 340, 220−228 (2008)
  11. Lendzion-Bielun Z., Bettahar M.M. and Monteverdi S., Fe-promoted CuO/CeO2 catalyst Structural characterization and CO oxidation activity, Catal. Commun., 11, 1137−1142 (2010)
  12. Yatsimirskii V.K., Maksimov Yu.V., Suzdalev I.P., Ishchenko E.V., Zakharenko N.I. and Gaidai S.V., Physical and chemical properties and activity of Fe-Co-Cu oxide catalysts in oxidation of CO, Theor. Exper. Chem., 39, 190-194 (2003)
  13. Ischenko E.V., Yatsimirsky V.K., Dyachenko A.G., Borysenko M.V., Prilutskiy E.V. and Kongurova I.V., Cu-Co-Fe oxide catalysts supported on carbon nanotubes in the reaction of CO oxidation, Polish J. Chem., 82, 291-297 (2008)
  14. PDF-2 Data Base JCPDS-ICDD 2007. JCPDS−International Centre for Diffraction Data: Newtown Square, PA, USA (2007)
  15. Holland T.J.B. and Redfern S.A.T., Unit cell refinement from powder diffraction data; the use of regression diagnostics, Mineral. Mag., 61, 65−77(1997)
  16. Cvetanovic R.J. and Amenomiya Y.A., Temperature programmed desorption technique for investigation of practical Catalysts, Catal. Rev., 6, 21−49 (1972)
  17. Beda A.A. and Ishchenko E.V., Method for calculating kinetic parameters of the desorption for the case of incompletely resolved peaks in studying carbon nanotubes and silicon carbide, J. Superhard Mater., 32 (5), 346−350 (2010)