Process for the preparation of finely divided metal and ceramic powders
AssigneeH.C. Starck GmbH
InventorTheo Konig
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Abstract
The present invention relates to a process for the preparation of finely divided metal and/or ceramic powders by reacting appropriate metal compounds and appropriate reagents in the gas phase (CVR) chemical vapor reaction, wherein the metal compound(s) and the further reagents are brought to reaction in the gaseous state in a reactor and are subsequently homogeneously condensed directly out of the gas phase, with exclusion of any wall reaction, and are subsequently separated from the reaction medium.
Claims18
A process for the preparation of at least one of finely divided metal and ceramic powders by reacting at least one metal compound and at least one reagent in a gas phase (CVR) reaction at a reaction temperature, said at least one metal compound and said at least one reagent being separately introduced into a reactor as coaxial, laminar part currents at a temperature which is at least the reaction temperature, wherein the at least one metal compound and the at least one reagent are brought to reaction in the reactor in the gaseous state to produce at least one reaction product which is condensed directly from the gas phase while excluding any wall reaction and further wherein the at least one reaction product, comprising said at least one of finely divided metal and ceramic powders, is subsequently separated from any remaining reagents after said reaction.
Dependencies are inferred from the claim text.