Abstract A metal-free microporous triazine polymer (MCTP) was applied as a heterogeneous catalyst for the oxidative desulfurization (ODS) of thiophenic sulfur compounds in decane as a model fuel. Using a molecular oxygen (O2)/aldehyde system as the oxidant, complete removal of dibenzothiophene (DBT) from a 400 ppm DBT solution (10 mL) was achieved at room temperature in 15 min with 2 mmol of isobutyraldehyde (IBA). The highly efficient conversion of the DBT was explained by the formation of an acyl radical from IBA aided by the MCTP catalyst, which was converted to a peroxyacid that oxidized the DBT to DBT sulfone. The conversion efficiency of thiophenic compounds followed the sequence of electron densities in the individual S atoms: DBT > benzothiophene > thiophene. The MCTP catalyst could be reused for ODS for at least five consecutive runs without any reduction in the catalytic performance after a simple acetone wash.

中文翻译：

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环境条件下微孔三嗪聚合物催化剂上的无金属氧化脱硫

摘要 以无金属微孔三嗪聚合物（MCTP）为多相催化剂，以癸烷为模型燃料对噻吩类硫化合物进行氧化脱硫（ODS）。使用分子氧 (O2)/醛系统作为氧化剂，在室温下用 2 mmol 异丁醛 (IBA) 在 15 分钟内从 400 ppm DBT 溶液 (10 mL) 中完全去除二苯并噻吩 (DBT)。DBT 的高效转化可以通过在 MCTP 催化剂的帮助下从 IBA 形成酰基自由基来解释，该酰基自由基转化为过氧酸，将 DBT 氧化为 DBT 砜。噻吩化合物的转化效率遵循单个 S 原子中电子密度的顺序：DBT > 苯并噻吩 > 噻吩。