Abstract The FeCl2/K2CO3 catalyst system was used successfully for the synthesis of oil soluble N-benzylated cobalt phthalocyaninetetrasulfonamide by the reaction of benzyl alcohol on water-soluble cobalt phthalocyaninetetrasulfonamide via heating at 135 °C for 20 h under N2. The new oil-soluble peripherally N-benzylated phthalocyanine was characterized by elemental analysis, FT-IR, UV–vis, TG and mass spectrometry. The catalytic activity of this new cobalt complex for oxidation of dibenzothiophene (DBT) was evaluated in n-dodecane (a middle distillate model compound) using H2O2 as an oxidant. The acetonitrile was taken as an extracting solvent for further extracting DBT sulfoxide and sulfone. The novel peripherally substituted cobalt(II) complex showed better oxidative desulfurization catalytic activity than cobalt phthalocyanine and cobalt phthalocyaninetetrasulfonamide. DBT oxidation kinetics were evaluated by lumped nth- and first-order kinetic models. The maximum removal of the DBT was found to be 85% at the optimized dose and experimental conditions.

中文翻译：

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N-苄基酞菁四磺酰胺钴的合成及其在氧化脱硫催化中的应用

摘要 以FeCl2/K2CO3为催化剂体系，通过苯甲醇与水溶性酞菁四磺酰胺钴在135℃加热20h反应，成功合成了油溶性N-苄基酞菁四磺酰胺钴。通过元素分析、FT-IR、UV-vis、TG 和质谱法对新的油溶性外围 N-苄基化酞菁进行了表征。使用 H2O2 作为氧化剂，在正十二烷（一种中间馏分模型化合物）中评估了这种新型钴配合物氧化二苯并噻吩 (DBT) 的催化活性。以乙腈为萃取溶剂，进一步萃取DBT亚砜和砜。新型外围取代的钴（II）配合物显示出比酞菁钴和酞菁四磺酰胺钴更好的氧化脱硫催化活性。DBT 氧化动力学通过集总 n 级和一级动力学模型进行评估。在优化的剂量和实验条件下，DBT 的最大去除率为 85%。