The Halcon Sd Group, Inc.

James J Barber

A process is disclosed for the recovery of high purity squaric acid from squarate containing solids from the electrochemical cyclization of carbon monoxide, involving contacting the squaric acid containing product with a two-phase mixture of strong, nonoxidizing aqueous acid and an immiscible organic solvent, followed by separating the solid, substantially pure squaric acid from the resulting three-phase mixture.

Process for the recovery of high purity squaric acid

A process for the formation of glycols, particularly ethylene glycol through the electrochemical coupling of aldehydes such as formaldehyde in neutral or acidic solutions producing high yields and product selectivities is disclosed. The process can also be effectively operated in the presence of a wide variety of polar, miscible, organic cosolvents.

Process for the electrochemical synthesis of ethylene glycol from

An improved process for the preparation of squaric acid, its complexes and/or salts, by means of a process for the electrolytic cathodic reductive tetramerization of carbon monoxide, involving the usage of an anhydrous aliphatic nitrile solvent containing from 3 to about 8 carbon atoms.

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Montvale, NJ, United States of America

James J Barber