PROCESS FOR PRODUCING CATALYSTS FOR AMMONIA SYNTHESIS BY REDUCING IRON OXIDES

PROCESS FOR PRODUCING CATALYSTS FOR AMMONIA SYNTHESIS BY REDUCING IRON OXIDES

Disclosed is a process whereby completed catalysts can be produced from the iron oxides, and these catalysts can be activated and employed directly after activation for ammonia synthesis from synthesis gas, comprising for example a mixture of nitrogen and hydrogen. A process is also disclosed to pro...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Eckert, Rene, Maier, Stefan, Reitmeier, Stephan J
Format: Patent
Sprache:eng
Schlagworte:
AMMONIA
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COMPOUNDS THEREOF
CYANOGEN
INORGANIC CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Beschreibung
Zusammenfassung:Disclosed is a process whereby completed catalysts can be produced from the iron oxides, and these catalysts can be activated and employed directly after activation for ammonia synthesis from synthesis gas, comprising for example a mixture of nitrogen and hydrogen. A process is also disclosed to produce pre-reduced catalyst precursors, which are first reduced under controlled conditions and subsequently passivated in an oxidizing atmosphere, before they are used in ammonia synthesis as catalysts. These pre-reduced catalysts can be activated significantly more quickly and under milder conditions than the iron oxides.