Assertion: hydrogen fluoride | /r/HasProperty | purified by electrolysis
Facets:
value: on carbon electrodes
type: LOCATION
value: on nickel
type: LOCATION
value: in 4 031 967
type: LOCATION
Source sentences:
text: In DE-A 4 031 967 and WO 91/13024 the hydrogen fluoride is purified by electrolysis on nickel or carbon electrodes.