邻氯苯甲醛合成新工艺

New process for preparation of o-chlorobenzaldehyde

以邻氯甲苯为原料 ,采用MnO2 为催化剂直接氧化合成邻氯苯甲醛。MnO2 的还原态Mn2 +用H2 O2 氧化再生 ,通过化学法实现催化剂循环。

Direct oxidizing synthesis of o-chlorobenzaldehyde from o-chlorotoluene was carried out by using manganese dioxide as catalysis.Manganese dioxide was reproduced by using bydric dioxide which owidize manganese ion-the reduced state of manganese dioxide catalyst circles was achieved by chemical method.The process condition of catalyst reproduction and o-chlorobenzaldehyde synthesis were studied.