Web Release Date: October 26,
Low-Temperature Catalytic Adsorption of NO on Activated Carbon Materials
and
Institute of Chemistry, University of Antioquia, A.A. 1226, Medellín, Colombia, and Laboratorio de Materiales Avanzados, Universidad de Alicante, Apartado 99, E-03080 Alicante, Spain.
Received May 23, 2007
In Final Form: August 30, 2007
Abstract:
The catalytic adsorption of NO on activated carbon materials provides an appropriated alternative for the control
of low-concentration emissions of this air pollutant. The surface complexes formed upon NO adsorption at 30 
C were
studied by X-ray photoelectron spectroscopy (XPS) and temperature-programmed desorption (TPD). The effects of
the addition of O2 and the presence of copper as a catalyst were studied. Copper assisted the oxygen transfer to the
carbon matrix. For the Cu-impregnated carbon sample, the presence of O2 favored NO adsorption by increasing the
breakthrough time, the adsorption capacity, and the formation of nitrogen and oxygen complexes of higher thermal
stabilities, which mainly desorbed as NO and CO2.
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