Nitric acid trapping media

Slettenhaar et al., 2003). 44 wt.-% HNF in water (maximum solubility is about 50 wt.-% at 20 °C) was catalytically decomposed with the catalyst Pt/Al2Q3Si previously described for HAN (Farhat et al., 2008). The gaseous products formed during the catalytic decomposition are major N2, medium NO, N2O and CO2, minor CO and traces of NO2. Raman analysis of the trapped solution evidenced the complete disappearance of hydrazinium cation, the formation of nitric acid and ammonium, whereas nitroformate anion remains in the solution. Pt, Rh and Pd catalysts supported on doped alumina were used for HNF decomposition (Courtheoux et al., 2004b). 

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