Processo para a preparação de sais de hidróxil amónio

The invention relates to a process for the preparation of a hydroxylammonium salt through catalytic reduction of nitrate ions in an acid medium, in the presence of an activated catalyst, which catalyst comprises carrier particles with metal particles containing palladium and platinum, the relative c...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LEONARDUS LEFFERST, PETER ARNOLD CECILIAAN SCHEVELIER, LAMBERTUS HUBERTUS WILHELMUS MARIA VAN LIESHOUT
Format:	Patent
Sprache:	por
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS AMMONIA CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF CYANOGEN INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention relates to a process for the preparation of a hydroxylammonium salt through catalytic reduction of nitrate ions in an acid medium, in the presence of an activated catalyst, which catalyst comprises carrier particles with metal particles containing palladium and platinum, the relative concentrations of the palladium and the platinum in each metal particle being almost the same. In particular, the platinum concentration in each metal particle has a standard deviation, in percent by weight relative to the palladium concentration, of less than 4% absolute.