L. Lietti et al., NH3 OXIDATION DURING THE CATALYTIC COMBUSTION OF BIOMASSES-RELATED FUELS OVER MN-SUBSTITUTED HEXAALUMINATES, Catalysis letters, 53(1-2), 1998, pp. 91-95
The reactivity of a Mn-substituted hexaaluminate catalyst in the catal
ytic combustion of gasified biomasses-derived fuels is addressed. The
combustion activity of the main fuel components, i.e., CO, H-2, C2H4 a
nd CH4, is investigated, along with that of NH3 that is present in the
biomasses-derived fuels. It is found that significant amounts of NOx
are formed from ammonia during the catalytic combustion process, but t
he occurrence of gas-phase homogeneous reactions involving NH3 and NO
in the presence of oxygen strongly reduce NOx formation at high temper
atures.