2-nitro-4-methylsulfonylbenzoic acid (NMSBA) is commercially produced from the oxidation of 2-nitro-4-methylsulfonyltoluene (NMST) with nitric acid as oxidant and V₂O₅ as catalyst in a strong acid solution; this process suffers from the following shortcomings: the discharge of large amounts of wastewater and waste gas, as along with the generation of polynitro compounds. It is necessary to develop a technology to avoid the pollution caused by oxidizing NMST with nitric acid. NMSBA can be synthesized by oxidizing NMST with air under the catalysis of the porous carbon made from coconut shell with ZnCl₂ as an activator together with Co/Mn/Br.

中文翻译：

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Co/Mn/Br催化制备NMSBA与椰壳多孔碳以ZnCl2为活化剂

2-硝基-4-甲基磺酰基苯甲酸(NMSBA)是由2-硝基-4-甲基磺酰基甲苯(NMST)在强酸溶液中以硝酸为氧化剂和V ₂ O ₅为催化剂氧化制得的；该工艺存在以下缺点：排放大量废水和废气，同时产生多硝基化合物。有必要开发一种技术来避免硝酸氧化NMST造成的污染。_{NMSBA可以通过在以ZnCl 2}为活化剂和Co/Mn/Br的椰子壳制成的多孔碳的催化下用空气氧化NMST来合成。