Selective catalytic reduction of NO with NH3 over CuOX-carbonaceous materials

CuOX-carbon nanotubes (CNTs), CuOX-activated carbon (AC) and CuOX-graphite catalysts were prepared by wet impregnation method and their De-NOX property were studied. SEM, EDX, TPD, TPR, MS and XPS were employed to probe the effect of carbonaceous material supports and the nature of CuOX species appeared on catalyst surface. The existence of Cu+, good dispersion and strong acid sites were found to contribute to the low temperature catalytic activity of CuOX-CNTs with a NO removal efficiency of 67% at 250 degrees C. Moreover, the regeneration of deactivated CuOX-CNTs catalyst caused by SO2 could be achieved by 300 degrees C heating the catalyst in N-2. (C) 2011 Elsevier B.V. All rights reserved.