Degradation and photodegradation of tetraacetylethylenediamine (TAED) in the presence of iron (III) in aqueous solution - Université Clermont Auvergne Accéder directement au contenu
Article Dans Une Revue Chemosphere Année : 1997

Degradation and photodegradation of tetraacetylethylenediamine (TAED) in the presence of iron (III) in aqueous solution

Résumé

The dark degradation of tetraacetylethylenediamine (TAED) was investigated. It is a slow process which is favored in acidic medium. There is a hydrolysis of an imide group with the scission of the CN bond giving rise to the triacetyl derivative (TAED'). When allowed to stand for longer times a second acetyl group is eliminated with the formation of the symetric diacetyl derivative (DAED). The degradation of TAED photoinduced by iron (III) was also investigated. It appears a faster degradation which does not lead to the same products. The process only involves •OH radicals formed upon photolysis of aquocomplex of iron (III). They preferentially abstract a hydrogen from the methylene group. The degradation is then assisted by oxygen and leads to the formation of carbonylated oxidation products.

Dates et versions

hal-03013074 , version 1 (18-11-2020)

Identifiants

Citer

N. Brand, Gilles Mailhot, M. Bolte. Degradation and photodegradation of tetraacetylethylenediamine (TAED) in the presence of iron (III) in aqueous solution. Chemosphere, 1997, 34 (12), pp.2637-2648. ⟨10.1016/S0045-6535(97)00107-0⟩. ⟨hal-03013074⟩
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