The optimal process for the synthesis of o-xylene using a microreactor was as fol-lows,the mixed acid was msulfuric acid∶mnitric acid∶mwater=2.07∶1.00∶0.89,nnitric acid∶no-xylene was 1.2∶1.0,the system temperature was 40℃,and the reaction time was 60 min.The conversion rate of o-xylene was more than 99.0%,and the impurity content was 3.91%,which was lower than the market process.
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