Process for preparing complexes of palladium (hydrogen)carbonate with amine ligands
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- UMICORE GALVANOTECHN
- Publication Date
- 2011-04-13
Abstract
Description
technical field
[0001] The present invention relates to a process for the preparation of palladium complexes. In particular, the present invention relates to a process in which an ammonia complex of palladium (hydrogen)carbonate is converted into an amine-utilizing complex. Background technique
[0002] Conventional palladium-nickel electrolytes contain ammonia and chloride and are therefore potentially hazardous to the health of operators and destructive to corroding device materials. In the conventional alkaline-ammoniacal method according to the prior art, dichlorotetraammine palladium (II) [(NH 3 ) 4 Pd]Cl 2 Or diammine palladium(II) dinitrite [(NH 3 ) 2 Pd](NO 2 ) 2 As a palladium compound for the deposition of palladium or palladium alloys. In the existing chloride-free method, tetraammine palladium (II) sulfate [(NH 3 ) 4 Pd]SO 4 Used instead of chloride compounds (Galvanotechnik3 (2007), p.677). In these methods, aggressive chlorides are dispensed with, i...