Electrochemical generation of n-o

Details Electrochemical generation of n-o Electrochemical generation of n-o

C - Chemistry, Metallurgy

25

B

204/65

C25B 1/00 (2006.01)

Patent

CA 1335885

A process is provided for the electrochemical generation of N2O5 in HNO3, whereby a solution of N2O4 in HNO3 is electrolysed. An electrolytic cell for the electrolysis is also provided, having substantially parallel electrodes in electrode compartments separated by a cell membrane. The anode is of Pt, Nb, Nb/Ta 40:60 alloy with a Pt coating. The cathode is Pt, stainless steel, Nb, Nb/Ta 40:60 alloy. The cell membrane is preferably a perfluorinated cationic exchange membrane. In use N2O5 forms in the anolyte and N2O4 increases in the catholyte. A suitable design of cell and its use in a single- or multi- stage electrolysis process is also described.

569722

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