Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Preparing organic compound
Patent
1996-10-23
1998-01-20
Gorgos, Kathryn L.
Electrolysis: processes, compositions used therein, and methods
Electrolytic synthesis
Preparing organic compound
204537, 204539, 204541, C25B 300, B01D 5942, B01D 5950, B01D 6144
Patent
active
057097895
ABSTRACT:
The present invention relates to a method of preparing hydroxylamine in an electrochemical cell, comprising the steps of: providing an electrochemical cell comprising an anode, a cathode, a bipolar membrane positioned between the anode and the cathode, the bipolar membrane having an anion selective side facing the anode and a cation selective side facing the cathode, and a divider positioned between the bipolar membrane and the anode, thereby defining a feed compartment on the cation selective side of the bipolar membrane, a recovery compartment on the anion selective side of the bipolar membrane, and an anolyte compartment between the divider and the anode; charging the feed compartment with an acidic electrolyte and the recovery and anolyte compartments with a solution; introducing nitrogen containing gas into the feed compartment; passing a current through the electrochemical cell thereby producing hydroxylammonium salt in the feed compartment; transferring at least a portion of the hydroxylammonium salt from the feed compartment to the recovery compartment thereby producing hydroxylamine in the recovery compartment; and recovering hydroxylamine from the recovery compartment.
REFERENCES:
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Bathia et al., The Canadian Journal of Chemical Engineering, vol. 57, pp. 631-637, 1979, "Hydroxylamine Production by Electroreduction of a Nitric Oxide in a Trickle Bed Cell."
Colucci et al., Electrochimica Acta, vol. 4, pp. 521-528, 1985, "The Electro Reduction of Nitric Oxide on Bulk Platinum in Acid Solutions."
Sharifian Hossein
Shay Christopher D.
Gorgos Kathryn L.
Sachem, Inc.
Wong Edna
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