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Authors
Affiliations
1 Department of Environmental Science and Engineering, Guru Jambheshwar University of Science and Technology, Hisar-125001, IN
2 Department of Agricultural Processing and Energy, Haryana Agricultural University, Hisar-125001, IN
3 Institut fur Didaktik der Chemie, Fliednerstr, 21; 48149 Münster, DE
Source
Asian Journal of Research in Chemistry, Vol 4, No 6 (2011), Pagination: 1005-1008
Abstract
Nano-size platinum particles were synthesized by chemical reduction of Pt+4 ions in water-in-oil microemulsion. As synthesized platinum nanoparticles have been characterized using TEM and XRD techniques. Platinum (2%)+Alumina composite was used as a catalyst for carrying out the oxidation of CO to CO2, over 50-500°C, in a suitably designed converter comprising a vertical quartz tube connected to a quadrupole mass spectrometer. Effects of [Water]/[Surfactant] ratio and the presence of polyethylene glycol (PEG) in the microemulsion on the size and catalytic efficiency of as-synthesized platinum nanoparticles have been investigated. The size of platinum nanoparticles grows further on increasing [Water]/[Surfactant] ratio in the microemulsion composition. Whereas, using pure alumina as catalyst, conversion of CO to CO2 occurs at 3000C, such conversion occurs at much lower temperature (225°C) using alumina+Pt (2%) as catalyst. CO to CO2 conversion temperature is further lowered to 200°C when the platinum nanoparticles synthesized in microemulsion, stabilized by polyethylene glycol (PEG), are used in the above composite catalyst.
Keywords
Platinum, Microemulsion, Polymer, Nanoparticles, Catalyst, Mass Spectrometer, Alumina, Poly(Ethylene Glycol).
