Patent ID: 6649136
Filing Date: 2003-11-18
Classification: C01C

Abstract:
A method of making a compound selected from the group consisting of: Group IA and IIA cyanide salts comprising:(a) contacting hydrogen cyanide with calcium hydroxide or calcium carbonate to produce calcium cyanide; and either (b) reacting said calcium cyanide with an ion-exchange media containing a first exchangeable anion so that said cyanide is exchanged with said first exchangeable anion and reacting said media with a solution of a second exchangeable anion and a Group IA or Group IIA metal ion, whereby the second exchangeable anion exchanges with said cyanide, forming a Group IA or Group IIA cyanide solution; or (c) reacting said calcium cyanide with an ion-exchange media containing a first exchangeable cation selected from the group consisting of: Group IA and Group IIA metal cations so that said calcium is exchanged with said first exchangeable cation and a Group IA or Group IIA cyanide solution is formed.