Abstract

Possible transformations of the components of raw benzene on ozone treatment are studied, for the example of model mixtures. Ozone is found to selectively react with thiophene, with decrease in its content by a factor of 1.5–2.0. In ozonization, tarry oxidation products of thiophene are formed. They are analyzed by thermogravimetric analysis (TGA) in the range 80–600°C. In the oxidation products, peaks in the emission intensity are observed for sulfur-bearing fragments with mass numbers m/z = 35 (H₃S), 44 (CS⁺), 82 (Ar–H₂SO₃), and 125 (Ar–SO⁺). This confirms that the oxidation of sulfur compounds by ozone produces sulfoxides and sulfonic acids.

中文翻译：

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粗苯成分的氧化破坏

摘要

以模型混合物为例，研究了臭氧处理中粗苯成分可能的转化。发现臭氧可选择性地与噻吩反应，其含量降低1.5-2.0倍。在臭氧化中，形成噻吩的焦油酰氧化产物。在80–600°C范围内通过热重分析（TGA）对它们进行分析。在氧化产物中，观察到质量数m / z = 35（H ₃ S），44（CS ⁺），82（Ar–H ₂ SO ₃）和125（ Ar–SO ⁺）。这证实了臭氧对硫化合物的氧化产生亚砜和磺酸。