Thermal degradations of some layer-type complexes consisting of FeOCl and organic compounds

Abstract

FeOCl crystals were intercalated with furfural, furfuryl alcohol and 2-vinyl pyridine. The resulting layer-type complexes, with or without γ-radiation, were thermally degradated. Thermal stabilities of all complexes were lower than that of FeOCl. FeOCl maintained its layered structure up to 773 K but FeOCl-furfural complex, which is the most stable, began to degrade at 423 K. Through the degradations, FeOCl changed into Fe₂O₃ and Fe₃O₄, and FeOCl-furfural complex into Fe₃O₄, FeCl₂ and an unidentified compound. The causes of such differences are discussed.