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Dergiler / Atmospheric Pollution Research / 2018 / Cilt: 9 - Sayı: 4

Low-temperature complete oxidation of CO over various manganese oxide catalysts

Subhashish DEY
Ganesh Chandra DHAL
Devendra MOHAN
Ram PRASAD
Sayfa
755–763
DOI
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

Further, the activity order of the catalysts obtained by various calcination conditions was as follows: RC > flowing-air > stagnant-air.

📌 3 Maddede Bu Makale

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Amaç & Hipotez:The low temperature catalytic oxidation of CO conceivably the most extensively studied reaction in the history of heterogeneous catalyst and it is important in the context of cleaning the air and lowering the automotive emissions.
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Temel Bulgular & Veri:Among a variety of manganese oxides catalyst, the Mn2O3 is considered to be the most favorable with respect to the catalytic activity.
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Sonuç & Katkı:Further, the activity order of the catalysts obtained by various calcination conditions was as follows: RC > flowing-air > stagnant-air.
🔬Tür:Araştırma Makalesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Alan Parametreleri

Özet

The low temperature catalytic oxidation of CO conceivably the most extensively studied reaction in the history of heterogeneous catalyst and it is important in the context of cleaning the air and lowering the automotive emissions. Among a variety of manganese oxides catalyst, the Mn2O3 is considered to be the most favorable with respect to the catalytic activity. A novel route of reactive calcination (RC) of Mn-salts (Mn-Acetate and MnNitrate) for the synthesis of highly active catalysts was studied. The calcination of the precursor produced manganese oxide species (Mn2O3 and MnO2) in thermodynamic equilibrium, with the major nano-size Mn2O3 phase having a large surface area, and lower crystallinity. The amazing activity of the novel MnOx catalysts over the conventional ones obtained by calcination of the precursors in stagnant air, flowing air and reactive calcination (4.5%CO in air) in CO oxidation was associated with the presence of Mn2O3 and its unusual morphology as evidenced by XRD, SEM-EDX, XPS and FTIR characterization. The catalysts obtained by calcination of various MnOx precursors showed activity for the CO oxidation in the following order: Mn-Acetate > Mn-Nitrate and all the traditional route of calcination was also followed the same activity order. Further, the activity order of the catalysts obtained by various calcination conditions was as follows: RC > flowing-air > stagnant-air.

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Bu Makaleye Atıf Yap

DEY, S., DHAL, G. C., MOHAN, D., PRASAD, R. (2018). Low-temperature complete oxidation of CO over various manganese oxide catalysts. Atmospheric Pollution Research, Cilt: 9 - Sayı: 4, 755–763. https://ajindex.com/articles/212570

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Kaynakça (14)

  1. Balgooyen, S., Alaimo, P.J., Remucal, C.K., Ginder-Vogel, M., 2016. Structural transformation of MnO2 during the oxidation of bisphenol A. Environ. Sci. Technol. 51 (11), 6053–6062.
  2. Berger, R.J., Perez-Ramirez, J., Kapteijn, F., Moulijn, J.A., 2002. Catalyst performance testing: the influence of catalyst bed dilution on the conversion observed. Chem. Eng. J. 90 (1–2), 173–183.
  3. Boreskov, G.K., 1966. Forms of oxygen bonds on the surface of oxidation catalysts. 41, 263–276.
  4. Cai, L., Guo, Y., Lu, A., Branton, P., Li, W., 2012. The choice of precipitant and precursor in the co-precipitation synthesis of copper manganese oxide for maximizing carbon monoxide oxidation. J. Mol. Catal. A Chem. 360, 35–41.
  5. Cholakov, G.S., 2000. Control of exhaust emissions from internal combustion engine vehicles. Pollut. Control Technol. 3, 1–8.
  6. Clarke, T.J., Davies, T.E., Kondrat, S.A., Taylor, S.H., 2015. Mechano-chemical synthesis of copper manganese oxide for the ambient temperature oxidation of carbon monoxide. Appl. Catal. B 165, 222–231.
  7. Dey, S., Dhal, G.C., Mohan, D., Prasad, R., 2017. Study of Hopcalite (CuMnOx) catalysts prepared through a novel route for the oxidation of carbon monoxide at low temperature. Bull. Chem. React. Eng. Catal. 12 (3), 393–407.
  8. Didenko, O.Z., Kosmambetova, G.R., Strizhak, P.E., 2011. Size effect in CO oxidation over magnesia-supported ZnO nanoparticles. J. Mol. Catal A 335, 14–23.
  9. Dinh, M.T.N., Giraudon, J.M., Vandenbroucke, A.M., Morent, R., De Geyter, N., Lamonier, J.F., 2015. Post plasma-catalysis for total oxidation of trichloroethylene over Ce–Mn based oxides synthesized by a modified “redox-precipitation route”. Appl. Catal. B 172–173, 65–72.
  10. Dong, X., Zhang, Y., Xu, Y., Zhang, M., 2015. Catalytic mechanism study on manganese oxide in the catalytic supercritical water oxidation of nitrobenzene. RSC Adv. 5, 47488–47497.
  11. Ghaffari, A., Shamekhi, A.H., Saki, A., Kamrani, E., 2008. Adaptive fuzzy control for AirFuel ratio of automobile spark ignition engine. World Aca. Sci. Eng. Tech 48, 284–292.
  12. Halim, K.S.A., Khedr, M.H., Nasr, M.I., El-Mansy, A.M., 2007. Factors effecting CO oxidation over nanosized Fe2O3. Mater. Res. Bull. 42, 731–741.
  13. Hu, C., Gao, Z., Yang, X., 2007. Facile synthesis of single crystalline α-Fe2O3 ellipsoidal nanoparticles and its catalytic performance for removal of carbon monoxide. Mater. Chem. Phys. 104, 429–433.
  14. Ilton, E.S., Post, J.E., Heaney, P.J., Ling, F.T., Kerisit, S.N., 2016. XPS determination of Mn oxidation sta