ПОЛУЧЕНИЕ АЛИФАТИЧЕСКИХ АЛЬДЕГИДОВ И ОКСИКИСЛОТ ЖИДКОФАЗНЫМ ОКИСЛЕНИЕМ ЦИКЛОГЕКСЕНА ПЕРОКСИДОМ ВОДОРОДА

Abstract

The reaction of obtaining aliphatic aldehydes and hydroxy acids by liquid-phase catalytic recyclization oxidation of cyclohexene with hydrogen peroxide has been studied. The optimal conditions for the reaction of oxidative recyclization of cyclohexene into aliphatic aldehydes and hydroxy acids in the presence of polyoxophosphomolybdic acid modified with Co2+ cations were found. (T-50-60С, =5-7 h., molar ratio of CH:Н2О2=1:2, molar ratio of CoBr2:H3PMo12O40]=1-3:1). The dependence of CH conversion and oxidate composition on the conditions of the oxidation reaction is shown. It was found that at a molar ratio of CH:H2O2=1:1-2 and at a molar ratio of CoBr2:H3PMo12O40]=1:1, the oxidation of CH proceeds in the direction of epoxidation and hydroxylation with the formation of cyclic epoxide and diol, when the ratio of CH:H2O2 = 1:2-4, and when the ratio CoBr2:H3PMo12O40] =2-3:1, the oxidation of CH proceeds with the recyclization of the cycle with the measurement of its initial structure with the formation of mainly oxihexanal and oxohexanoic acid with a total selectivity of over 75%.