A Study on Catalysis by Ferrospinels for Preventing Atmospheric Pollution from Carbon Monoxide

Chennampilly Ummer Aniz, Thengumthanam Damodaran Radhakrishnan Nair

.
School of Chemical Sciences, Payyanur Campus, Kannur University, Kerala, India.

DOI: 10.4236/ojpc.2011.13017                

Abstract

Ferrospinel catalyst samples containing Nickel, Cobalt and Copper have been synthesized by room temperature co-precipitation route and have been found to be effective for the oxidative removal of carbon monoxide from automobile exhaust gases even at relatively lower temperatures (cold-start). These catalyst materials have been characterized by modern physico-chemical techniques such as XRD, TG, BET-BJH and SEM etc. Nitrogen adsorption studies shows the samples are mesoporous in nature with pore diameter of 5 - 10 nm. The catalytic efficiencies of these materials of having various compositions have been tested in a series of temperature programmed oxidation reactions involving carbon monoxide and the results discussed.

Keywords

Catalysis, Ferrospinels, Mesoporous, Atmospheric Pollution, Carbon Monoxide Oxidation

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	P. S. Anilkumar, J. J. Shrotri, S. D. Kulkarni, C. E. Desh pande and S. K. Date, “Low Temperature Synthesis of Ni0.8Zn0.2Fe2O4 Powder and Its Characterization,” Materials Letters, Vol. 27, No. 6, 1996, p. 293-296. doi:10.1016/0167-577X(96)00010-9
[2]	B. S. Rao, K. Sreekumar and T. M. Jyothi, “An Improved Process for the Preparation of a Mixture of Alkylphenols (O-Cresol and 2,6-Xylenol),” Indian Patent No. 2707/98, 1998.
[3]	C. G. Ramankutty, S. Sugunan and B. Thomas, “Study of Cyclohexanol Decomposition Reaction over the Ferrospinels, A1-xCuxFe2O4 (A = Ni or Co and x = 0, 0.3, 0.5, 0.7 and 1), Prepared by ‘Soft’ Chemical Methods,” Journal of Molecular Catalysis A: Chemical, Vol. 187, No. 1, 2002, pp. 105-117. doi:10.1016/S1381-1169(02)00121-8
[4]	S. Ek, et al., “Determination of the Hydroxyl Group Content in Silica by Thermogravimetry and a Comparison with 1HMAS NMR Results,” Thermochimica Acta, Vol. 379, No. 1-2, 2002, pp. 201-211. doi:10.1016/S0040-6031(01)00618-9
[5]	N. D. Ivanova, S. V. Ivanov, et al., “High Performance Manganese Oxide for CO Oxidation,” Russian Journal of Applied Chemistry, Vol. 75, No. 9, 2002, pp. 1420-1423. doi:10.1023/A:1022216626347
[6]	L. S. D. Glasser, “Crystallography and Its Applications,” Van Nostrand Reinhold Company Ltd., New York, 1977, p. 114.
[7]	J. C. Groen, et al., “Pore Size Determination in Modified Micro- and Mesoporous Materials. Pitfalls and Limitations in Gas Adsorption Data Analysis,” Microporous and Mesoporous Materials, Vol. 60, No. 1-3, 2003, pp. 1-17. doi:10.1016/S1387-1811(03)00339-1
[8]	F, Kapteijn, S. Stegenga, N. J. J. Dekker, J. W. Bijsterbosch and J. A. Moulijn, “Alternatives to Noble Metal Catalysts for Automotive Exhaust Purification,” Catalysis Today, Vol. 16, No. 2, 1993, p. 273-287. doi:10.1016/0920-5861(93)85024-T
[9]	K. R. Krishnamurthy, B. Viswanathan and M. V. C. Sastri, “Catalytic Oxidation of Carbon Monoxide on Spinel type Ferrites Role of Magnetic Exchange Interactions,” Proceedings of Indian National Science Academy, Vol. 43, 1977, pp. 34-38.
[10]	P. Mars and D. W. Van Krevelen, “Oxidations Carried out by the Means of Vanadium Oxide Catalysts,” Chemi- cal Engineering Science, Special Supplement 3, 1954, pp. 41-59.