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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/7110

Title: Transition metal (Cu, Cr, and V) modified MCM-41 for the catalytic wet air oxidation of aniline
Authors: GOMES, HT
SELVAM, P
DAPURKAR, SE
FIGUEIREDO, JL
FARIA, JL
Keywords: mesoporous molecular-sieves
liquid-phase oxidation
selective oxidation
waste-water
activated carbon
copper-oxide
heterogeneous catalysts
aqueous-solution
phenol
cyclohexane
Issue Date: 2005
Publisher: ELSEVIER SCIENCE BV
Citation: MICROPOROUS AND MESOPOROUS MATERIALS, 86(1-3), 287-294
Abstract: Mesoporous MCM-41 based materials containing various transition metals (Cr, Cu and V) were prepared hydrothermally and characterized using various analytical and spectroscopic techniques. Cr and Cu are randomly anchored to the surface of MCM-41 support, while V is predominantly present as penta-valent species within the framework structure of the support. The catalytic activity was tested in the wet air oxidation of aniline aqueous solutions (2 g/L) using a high-pressure reactor at 200 degrees C with an oxygen partial pressure of 6.9 bar. Among the prepared materials, (Cu)MCM-41 showed a significant catalytic activity with an aniline conversion after 2 h of 96% and a selectivity towards CO2 formation of 76%. Although some leaching of the Cu was observed, the catalyst showed a good performance and stability after re-use in at least three consecutive cycles. (c) 2005
URI: http://dx.doi.org/10.1016/j.micromeso.2005.07.022
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7110
http://hdl.handle.net/10054/7110
ISSN: 1387-1811
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