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AssigneeSachem, Inc.
InventorsChristopher D. Shay, Hossein Sharifian
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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.
A method of electrochemically preparing hydroxylamine, comprising the steps of:
The method of claim I further comprising the step of further purifying the hydroxylamine recovered from the recovery compartment by electrodialysis.
A method of electrochemically preparing hydroxylamine, comprising the steps of:
A method of electrochemically preparing a hydroxylammonium salt, comprising the steps of:
Dependencies are inferred from the claim text.