Natural kaolin clay with inherent structures shows huge potential for serving as catalytic carriers. Mesoporous kaolin carrier was obtained by a facile acidification and alkalization treatment, resulting in an extreme enhancement of specific surface area from 16.6 m²/g to 303.4 m²/g. The V₂O₅/mesoporous kaolin composite catalysts realized that nearly completely dibenzothiophene oxidative degraded within 10 min. This excellent catalytic performance should be attributed to the synergistic effect of mesoporous kaolin and well dispersed V₂O₅ nanoparticles, which can expose more V⁵⁺/V⁴⁺ Lewis acids and transfer bulky organic sulfides to active sites. The mechanism of oxidation desulfurization was proposed as: the V₂O₅ active component react with tert-butyl hydroperoxide to form O^.-, which oxidizes dibenzothiophene molecules on the active sites to form dibenzothiophene sulfone. The modifications of kaolin and its combination with V₂O₅ demonstrated in this work are expected to open a new window for applying such abundant and cost-effective clay as catalytic carriers.

具有固有结构的天然高岭土显示出巨大的潜力，可以用作催化载体。用容易酸化和碱化处理而得到的介孔载体高岭土，导致比表面积的一种极端增强从16.6米² / g至303.4米² / g以下。V ₂ O ₅ /介孔高岭土复合催化剂意识到在10分钟内几乎完全二苯并噻吩氧化降解。这种优异的催化性能应归因于介孔高岭土和分散良好的V ₂ O ₅纳米颗粒的协同作用，该纳米颗粒可以暴露更多的V ⁵⁺ / V ⁴⁺路易斯酸将大量的有机硫化物转移到活性位点。提出了氧化脱硫的机理：V ₂ O ₅活性成分与叔丁基氢过氧化物反应生成O ^.-，后者将活性部位的二苯并噻吩分子氧化形成二苯并噻吩砜。这项工作中证明的高岭土的改性及其与V ₂ O _5的结合有望为使用如此丰富且具有成本效益的粘土作为催化载体打开一个新的窗口。