Abstract Oxidative removal of toluene using copper and cobalt bimetallic catalysts with varying molar ratios supported on sepiolite was investigated. The catalysts prepared by a deposition precipitation method and were characterized using X-ray diffraction, nitrogen adsorption-desorption, field emission scanning electron microscopy, H2-temperature-programmed reduction, transmission electron microscope, and inductive coupled plasma atomic emission spectroscopy. The species supported on sepiolite are Co3O4, CuO, and CuCo2O4. The activities of the tested catalysts increased in the order 0Co-4Cu/Sep <1Co-3Cu/Sep <4Co-0Cu/Sep <1Co-1Cu/Sep <3Co-1Cu/Sep. The latter exhibiting 90% toluene oxidative degradation at 288 °C within 15 h, having high selectivity towards CO2, and being stable at 300 °C up to 15 h. In conclusion, this study showed that sepiolite has excellent properties as a support.

中文翻译：

---

海泡石负载钴铜双金属催化剂从气流中去除甲苯

摘要 研究了使用不同摩尔比负载在海泡石上的铜和钴双金属催化剂氧化去除甲苯。催化剂采用沉积沉淀法制备，并使用X射线衍射、氮吸附-解吸、场发射扫描电子显微镜、H2程序升温还原、透射电子显微镜和电感耦合等离子体原子发射光谱进行表征。支持在海泡石上的物质是 Co3O4、CuO 和 CuCo2O4。测试催化剂的活性以0Co-4Cu/Sep <1Co-3Cu/Sep <4Co-0Cu/Sep <1Co-1Cu/Sep <3Co-1Cu/Sep 的顺序增加。后者在 288°C 下在 15 小时内表现出 90% 的甲苯氧化降解，对 CO2 具有高选择性，并在 300°C 下稳定长达 15 小时。综上所述，