caa a22 4500 475844831 CHVBK 20180406123911.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1023/A:1019199614339 doi (NATIONALLICENCE)springer-10.1023/A:1019199614339 Nitrous oxide decomposition and reduction over copper catalysts supported on various types of carbonaceous materials [Elektronische Daten] [J. Ma, N.M. Rodriguez, M.A Vannice, R.T.K. Baker] Copper supported on three different allotropic forms of carbon materials have been prepared and evaluated as catalysts for the N2O decomposition and reduction reactions. It was found that all the catalysts underwent severe deactivation during the N2O decomposition reaction due to the gasification of carbon substrates. This behavior was particularly evident when activated carbon was used as the support medium. The chemical identity of the active entity involved in the carbon gasification process is believed to consist of a mixture of Cu+ and Cu2+ species and, according to the well established mechanism, the reaction proceeds in such a manner so that the surface of the catalyst undergoes a redox cycle at the gas/solid carbon interface. The introduction of CO into the system was shown to result not only in an enhancement in the activity of the desired N2O decomposition reaction, but also served to inhibit the deleterious carbon gasification process. In addition, this procedure stabilized the copper particles in the metallic state, which is the active species responsible for the dissociation of N2O. Copper dispersed on a diamond substrate appeared to attain the highest activity for the N2O reduction reaction, a feature that is associated with the ability of the metal to undergo a wetting and spreading action on the support surface, possibly resulting in an epitaxial relationship between the two components. Kluwer Academic Publishers, 2000 nitrous oxide decomposition nationallicence carbon‐supported copper catalysts nationallicence Ma J. Chemistry Department, Northeastern University, 02115, Boston, MA, USA aut Rodriguez N.M. Chemistry Department, Northeastern University, 02115, Boston, MA, USA aut Vannice M.A. Chemical Engineering Department, The Pennsylvania State University, University Park, 16802, PA, USA aut Baker R.T.K. Chemistry Department, Northeastern University, 02115, Boston, MA, USA aut Topics in Catalysis Kluwer Academic Publishers-Plenum Publishers 10/1-2(2000-03-01), 27-38 1022-5528 10:1-2<27 2000 10 11244 https://doi.org/10.1023/A:1019199614339 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1019199614339 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ma J. Chemistry Department, Northeastern University, 02115, Boston, MA, USA aut NATIONALLICENCE 700 1- Rodriguez N.M. Chemistry Department, Northeastern University, 02115, Boston, MA, USA aut NATIONALLICENCE 700 1- Vannice M.A. Chemical Engineering Department, The Pennsylvania State University, University Park, 16802, PA, USA aut NATIONALLICENCE 700 1- Baker R.T.K. Chemistry Department, Northeastern University, 02115, Boston, MA, USA aut NATIONALLICENCE 773 0- Topics in Catalysis Kluwer Academic Publishers-Plenum Publishers 10/1-2(2000-03-01), 27-38 1022-5528 10:1-2<27 2000 10 11244 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer