Guanidine oxalate: a new reagent for coprecipitation in the synthesis of multicomponent ceramics

Abstract

Guanidine oxalate, [H₂NC(NH)NH₂]₂H₂C₂O₄, has been synthesized and isolated. This paper reports its first use as a precipitating agent in the production of coprecipitated multicomponent oxide powder precursors. The compound can be synthesized using inexpensive starting materials. We have demonstrated its use in the synthesis of several mixed-oxide systems, including magnetic oxides, catalysts, and superconducting cuprates. Highly quantitative precipitations were achieved in each case with no pH adjustment.