CATALYTIC ACTIVITIES OF 12-MOLYBDOPHOSPHORIC ACID AND ITS SALTS SUPPORTED ON SILICON DIOXIDE FOR THE REDUCTION OF NITROGEN MONOXIDE.

Article abstract of DOI:10.1246/bcsj.57.1449

12-Molybdophosphoric acid and its metal salts, supported on SiO//2 (H//3PA and MPA/SiO//2), were found to exhibit significant activities for the catalytic reduction of nitrogen monoxide with hydrogen or ammonia, the latter reductant being more reactive. Nitrogen monoxide was decomposed by a stoichiometric reaction with the reduced site on Cu//1//. //1H//0//. //8PA/SiO//2, especially when the catalyst was reduced with hydrogen, although no oxygen was detected in the product, the initial rate being comparable to that of the reduction with hydrogen. The results suggest that the redox and Langmuir mechanisms are plausible for the reactions with hydrogen and ammonia respectively.