石油炼制与化工
• 加工工艺 • 上一篇 下一篇
宋华 李艳 王君 董占元
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SONG Hua
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摘要： 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%。
关键词: 间二甲苯, 间苯二甲酸, 常压, 氧化
Abstract: 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.
Key words: m-xylene, m-toluic acid, atmospheric pressure, oxidation
宋华 李艳 王君 董占元. 分子氧常压氧化制备间苯二甲酸的研究[J]. 石油炼制与化工, doi: .
SONG Hua . STUDY ON THE PREPARATION OF m-TOLUIC ACID BY OXIDATION WITH OXYGEN UNDER ATMOSPHERIC PRESSURE[J]. Petroleum Processing and Petrochemicals, doi: .
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