Patent ID: 8524066
Filing Date: 2013-09-03
Classification: C25B

Abstract:
1. A method for electrochemical production of urea, comprising: (A) introducing carbon dioxide and a nitrogen oxide to a solution of an electrolyte and a heterocyclic catalyst in an electrochemical cell, wherein (i) said electrochemical cell including an anode in a first cell compartment and a cathode in a second cell compartment, (ii) said cathode reducing said carbon dioxide into a first sub-product and reducing said nitrogen oxide into a second sub-product, and (iii) said heterocyclic catalyst includes at least one of adenine, a heterocyclic amine containing sulfur, a heterocyclic amine containing oxygen, an azole, benzimidazole, a bipyridine, furan, an imidazole, an imidazole related species with at least one five-member ring, an indole, methylimidazole, an oxazole, phenanthroline, pterin, pteridine, a pyridine, a pyridine related species with at least one six-member ring, pyrrole, quinoline, or a thiazole; and (B) combining said first sub-product and said second sub-product to produce urea.