Collect. Czech. Chem. Commun. 1996, 61, 1709-1714

Reactivity of Nitrogen Oxides Towards Sodium Carbonate and Hydrogencarbonate Based Solid Sorbents

Erich Lippert, Pavel Bach, Květoslava Stejskalová, Emerich Erdös and Karel Mocek

J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, 182 23 Prague 8, Czech Republic


The reactivity of nitrogen oxides towards sodium carbonate and hydrogencarbonate based solids was measured within a range of variables which is of technological interest. The reactivity is significant at lower temperatures only and is not affected by the presence of carbon dioxide or oxygen. Water vapor acts as a catalyst. Nitrogen dioxide is more reactive than nitrogen monoxide. The reactivity of the solid depends substantially on its origin and way of preparation. As compared with SO2 or HCl, nitrogen oxides exhibit a lower reactivity, presumably because the solid is blocked by the reaction products.

Keywords: Nitrogen oxides; Sodium carbonate; Reactivity.