Author(s)

J. Kleffmann, K-H Becker and P. Wiesen

Abstract

Heterogeneous Conversion on Carbonaceous Surfaces A contribution to subproject CMD J Kleffmann, K-H Becker and P. Wiesen Physikalische Chemie /Fachbereich 9, Bergische Universitdt - Gesamthochschule Wuppertal, D-42097 Wuppertal, Germany Introduction The removal of atmospheric nitrogen compounds by heterogeneous reactions is of special interest in atmospheric chemistry. In particular, the heterogeneous conversion of nitrogen oxides on carbonaceous surfaces has attracted considerable attention during the last few years. Both the kinetics, expressed by the uptake coefficients, and the product formation is poorly understood and still controversial at present. For the uptake coefficients of NO: on soot surfaces values in the range 0.1 to < 10~^ have been determined (Rogaski et al, 1997; Kalberer et a/., 1996; Kamm et al, 1997) demonstrating the necessity for further clarification. Whereas in ne

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