CAJ | 학술논문

以分子氧为氧化剂,在气液两相条件下研究了间二甲苯氧化制备间苯二甲酸的反应,考察了各因素对反应的影响,确定了适宜的反应条件.在间二甲苯0.5 mL、乙酸钴催化剂用量0.05 g、促进剂溴化钠用量0.02 g、冰乙酸溶剂20 mL、反应温度90℃、反应时间8 h、氧气流速100 mL/min 的条件下,间二甲苯转化率达到100%,间苯二甲酸收率达到98.36%.
이분자양위양화제,재기액량상조건하연구료간이갑분양화제비간분이갑산적반응,고찰료각인소대반응적영향,학정료괄의적반응조건.재간이갑분0.5 mL、을산고최화제용량0.05 g、촉진제추화납용량0.02 g、빙을산용제20 mL、반응온도90℃、반응시간8 h、양기류속100 mL/min 적조건하,간이갑분전화솔체도100%,간분이갑산수솔체도98.36%.
Gas-liquid phase oxidation of m-xylene under atmospheric pressure to prepare m-toluic acid was studied using oxygen as oxidant,cobalt acetate as catalyst and acetic anhydride as solvent.The effect of reaction conditions on the conversion of m-xylene and the yield of m-toluic acid was investigated and optimum conditions were obtained.It was found that under the optimum conditions of a m-xylene amount of 0.5 mL,a catalyst dosage of 0.05 g,a NaBr promoter dosage of 0.02 g,a solvent amount of 20 mL,an oxygen flow rate of 100 mL/min,a reaction temperature of 90℃ and a reaction time of 8 h,the conversion of m-xylene and the yield of m-toluic acid reached 100% and 98.36%,respectively.