Catalytic Agent Degradation on Oxide Films and in Microheterogeneous SolutionSystems

摘要

Studies over the period January 1990-January 1993 of grant No. DAJA45-90-C-0007centered principally on investigations of the thermal and/or photolytic degradation of toxic compounds in aqueous solutions containing hydrogen peroxide (as sacrificial oxidant) and Fe(III) salts as catalytic agents. Extensive investigations were carried out on the simulants 4-NPDEP (paraoxon, 4-nitrophenyl diethyl phosphate), 4-NPIPP (4-nitrophenyl isopropyl phenyl phosphinate), DEP (diethyl ethyl phosphonate), NOX (nitro-o-oxylene), TSPAP (thiosulfuric acid-S-(2-diisopropyl amino ethyl)-O-phenylester, 4-NP (4-nitrophenol), 4-CP (4-Chlorophenol), and DBP (diethyl benzylphosponate). Both DBP and KHP (potassium hydrogen phthalate) were used as model compounds in attempts to elucidate the mechanism of the photocatalytic reaction in presence of Fe(III) salts.