Adiabatic Calorimetric Decomposition Studies of 35 Mass% Hydroxylamine Hydrochloride/water

Authors

  • Lizbeth O. Cisneros,

    1. Mary Kay O'Connor Process Safety Center, Chemical Engineering Department, College Station, TX, USA 77843-3122
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  • William J. Rogers,

    1. Mary Kay O'Connor Process Safety Center, Chemical Engineering Department, College Station, TX, USA 77843-3122
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  • M Sam Mannan

    Corresponding author
    1. Mary Kay O'Connor Process Safety Center, Chemical Engineering Department, College Station, TX, USA 77843-3122
    • Mary Kay O'Connor Process Safety Center, Chemical Engineering Department, College Station, TX, USA 77843-3122
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Abstract

The HH (35 mass% hydroxylamine hydrochloride/water solution) and HH-ind (stabilized 35 mass% hydroxylamine hydrochloride/water solution for industrial use) decomposition reaction has an onset temperature of ∼145°C. The measured gas phase decomposition products are 0.25 mol N2 and 0.06 mol O2 per mol of hydroxylamine hydrochloride with small quantities of N2O and H2, and a trace amount of NO for a total noncondensable gas production of ∼0.39 mol/mol of hydroxylamine hydrochloride. The reaction system is tempered by the evaporation of the solvent (water) and the reaction is drastically catalyzed by stainless and carbon steel.

Abstract

La réaction de décomposition du HH (solution de chlorhydrate d'hydroxylamine de 35% en matière/eau) et du HH-ind (solution de chlorhydrate d'hydroxylamine de 35% en matière/eau pour usage industriel) a une température de départ de ∼145°C. Les produits de décomposition mesurés pour la phase gazeuse sont 0,25 mol N2 et 0,06 mol O2 par mol de chlorydrate d'hydroxylamine avec de petites quantités de N2O et H2, et des traces de NO, pour une production de gaz non condensable de chlorhydrate d'hydroxylamine de ∼0.39 mol/mol. Le système réactif est tempéré par l'évaporation du solvant (eau) et fortement catalysé par l'acier inoxydable et l'acier au carbone.

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