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Carbon Xerogel Catalyst for NO Oxidation

Laboratory of Catalysis and Materials (LCM), Associate Laboratory LSRE/LCM, Chemical Engineering Department, Faculty of Engineering, University of Porto,4200-465 Porto, Portugal
Author to whom correspondence should be addressed.
Catalysts 2012, 2(4), 447-465;
Received: 20 July 2012 / Revised: 28 September 2012 / Accepted: 9 October 2012 / Published: 17 October 2012
(This article belongs to the Special Issue Aerogel Catalyst)
Carbon xerogels were prepared by the polycondensation of resorcinol and formaldehyde using three different solution pH values and the gels were carbonized at three different temperatures. Results show that it is possible to tailor the pore texture of carbon xerogels by adjusting the pH of the initial solution and the carbonization temperature. Materials with different textural properties were obtained and used as catalysts for NO oxidation at room temperature. The NO conversions obtained with carbon xerogels were quite high, showing that carbon xerogels are efficient catalysts for NO oxidation. A maximum of 98% conversion for NO was obtained at initial concentration of NO of 1000 ppm and 10% of O2. The highest NO conversions were obtained with the samples presenting the highest surface areas. The temperature of reaction has a strong influence on NO oxidation: the conversion of NO decreases with the increase of reaction temperature. View Full-Text
Keywords: carbon xerogels; textural properties; surface chemistry; NO oxidation; catalytic activity carbon xerogels; textural properties; surface chemistry; NO oxidation; catalytic activity
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Sousa, J.P.S.; Pereira, M.F.R.; Figueiredo, J.L. Carbon Xerogel Catalyst for NO Oxidation. Catalysts 2012, 2, 447-465.

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