Method for producing alkali and alkaline earth alloys and use of the alkali and alkaline earth alloys

摘要

A method for producing alkali and alkaline earth alloys. It also relates to the use of the alkali and alkaline earth compositions. In order to create a novel method for producing alkali and alkaline earth alloys, it is proposed within the context of the invention that salts, hydroxides, alkoxides or oxides of alkali or alkaline earth compounds be mixed with salts, hydroxides, alkoxides or oxides of semi-metals, nonmetals or metals and then heated to at least 100° C., the salts, hydroxides, alkoxides or oxides of alkali or alkaline earth metals being present in a molar ratio of 1:1 or in excess thereof in relation to the salts, hydroxide, alkoxides or oxides of the semi-metals, nonmetals or metal. Surprisingly, it was found within the context of the invention that by mixing salts, hydroxides, alkoxides or oxides of alkali or alkaline earth compounds with salts, hydroxides, alkoxides or oxides of semi-metals or metals from the 3rd or 4th main group and subsequent heating, alkali or alkaline earth alloys can be produced.

主权项

1. Method for producing and regenerating a metallic alkali alloy, wherein
salts, hydroxides, alkoxides or oxides of alkali metals selected from the group consisting of alkali, nitrates, carbonates, formiates, oxalates, and acetatesare mixed with
oxides of semi-metals, non-metals or metals, selected from the group consisting of CO2, CO, silicon oxide, aluminium oxide, zirconium oxide and cerium oxideto form a mixture and the mixture is subsequently heated to at least 400° C. such that the metallic alkali alloy is formed, the salts, hydroxides, alkoxides or oxides of alkali metals being present in a molar ratio of 1:1 or in excess thereof in relation to the oxides of the semi-metals, non-metals or metals,
wherein the metallic alkali alloy is subjected to a plurality of soot-combustion cycles by application of soot followed by thermal combustion of the soot at 300° C. which causes the amount of metallic alkali alloy in the mixture to diminish, and wherein the diminished alkali alloy mixture is heated to 500° C. such that the metallic alkali alloy is regenerated.