Catalytic reactions of NO over 0-7 mol% Ba/MgO catalysts - I. The direct decomposition of NO Academic Article

abstract

• A series of catalysts composed of barium oxide supported on magnesium oxide with Ba loadings up to 7 mole % was studied for NO and N2O decomposition. The rate of N2O decomposition was much greater than that of NO decomposition so that the selectivity for N2 formation approached 100% at > 700C. The kinetics of the reaction (second-order in NO and negative-order in O2) was consistent with an Eley-Rideal mechanism, in which the rate-limiting step involved the reaction of gas-phase NO with an N-containing surface intermediate. The N2 selectivity in NO decomposition products over a 4 mole % Ba/MgO catalyst increased with increasing temperature. N2 was formed during NO decomposition via the decomposition of N2O over a 4 mole % Ba/MgO catalyst. The role of N2O as a reaction intermediate in NO decomposition was confirmed by the results of a separate experiment in which the space velocity of the 4% NO reagent was varied.

authors

• Rosynek, Michael

published proceedings

• JOURNAL OF CATALYSIS

author list (cited authors)

• Xie, S. B., Rosynek, M. P., & Lunsford, J. H.

citation count

• 70

complete list of authors

• Xie, SB||Rosynek, MP||Lunsford, JH

publication date

• January 1999

publisher

• Elsevier  Publisher

published in

• Journal of Catalysis  Journal

keywords

• Barium Oxide
• Decomposition
• Nitric Oxide
• Nitrous Oxide

Digital Object Identifier (DOI)

• 10.1006/jcat.1999.2648

start page

• 24

end page

• 31

volume

• 188

issue

• 1

URL

• http://dx.doi.org/10.1006/jcat.1999.2648