The autoxidation of 2,3-dihydroxy-2-propenal (triose reductone). The effects of the pH on the rate constants.

概要

論文の詳細を見る
The autoxidation of 2,3-dihydroxy-2-propenal (triose reductone) was investigated between pH 2.83 and 13.91 in the presence of disodium dihydrogen ethylenediaminetetraacetate (EDTA 2NA). The reaction obeyed the first-order rate law with respect to the triose reductone and the zeroth-order rate law with respect to oxygen when the oxygen concentration was higher than 0.246 mM (1 mM=10−3 mol dm−3) at 30 °C. The pH dependence of the reaction rates showed that the reaction rates are governed by the acid-base equilibrium of triose reductone. The rate constants for neutral and singly- and doubly-charged anions of triose reductone at 30 °C were (3.6±0.1)×10−6, (7±1)×10−5, and (1.8±0.1)×10−2 s−1 respectively. The hydrogen peroxide produced as a result of the triose reductone oxidation was also found to oxidize triose reductone.
公益社団法人日本化学会の論文