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首页> 外文期刊>International Journal of Electrochemical Science >Indirect Electrochemical Synthesis of 2-nitro-4-methylsulfonyl Benzoic Acid Mediated by Cr3+/Cr6+
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Indirect Electrochemical Synthesis of 2-nitro-4-methylsulfonyl Benzoic Acid Mediated by Cr3+/Cr6+

机译：Cr 3 + / Cr 6 + 间接电化学合成2-硝基-4-甲基磺酰基苯甲酸

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摘要

A new indirected electrolytic synthesis of 2-nitro-4-methylsulfonylbenzoic acid was adopted in thisstudy. The influence factors related to the processes of liquid phase oxidation of 2-nitro-4- 3+ methylsulfonylbenzoic acid and electrochemical oxidation of Cr were investigated, and indirectelectrochemical synthesis of 2-nitro-4-methylsulfonylbenzoic acid was also conducted. Theexperimental results showed that concentrations of H2SO4, feed ratio and solution temperature hadsignificant influence on oxidative ability and electrochemical reactivity of chromium Ions. The highestyield of 2-nitro-4-methylsulfonyl benzoic acid (49.4%) could be obtained during liquid phaseoxidation with feed ratio of 1:4 in 7.0mol/L H2SO4 at 95C. The current efficiency of electrochemical3+ 2 oxidation of Cr could reach up to 99% with current density of 5 A/dm at 35C. The tests werecycled for eight times at the optimal conditions, and the average yield of 2-nitro-4-methylsulfonyl3+ benzoic acid and current efficiency of electrochemical oxidation of Cr were 47.9% and 85.2%respectively. These indicated that the system has good stability and this technology could have a goodprospect of commercialization.
机译：本研究采用了一种新的间接电解合成2-硝基-4-甲基磺酰基苯甲酸的方法。研究了2-硝基-4-3 +甲基磺酰基苯甲酸的液相氧化过程和Cr的电化学氧化过程的影响因素，并进行了2-硝基-4-甲基磺酰基苯甲酸的间接电化学合成。实验结果表明，H2SO4的浓度，进料比和溶液温度对铬离子的氧化能力和电化学反应性有显着影响。液相氧化过程中，在7.0mol / L H2SO4中，在95℃下进料比为1：4时，可以得到最高产率的2-硝基-4-甲基磺酰基苯甲酸（49.4％）。 Cr的电化学3+ 2氧化电流效率在35 A时电流密度为5 A / dm时可达到99％。试验在最佳条件下进行了8次循环，2-硝基-4-甲基磺酰基3+苯甲酸的平均收率和Cr电化学氧化的电流效率分别为47.9％和85.2％。这些都表明该系统具有良好的稳定性，该技术具有良好的商业化前景。

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