Activated carbon (AC) has been widely used in the catalysis field because of its low cost, scalable production, high specific surface area, and abundant exposed edge. Because of the amorphous structure, traditional AC is unstable in presence of O₂ at high temperature, which hinders the application of AC catalysts in oxidative dehydrogenation (ODH) of alkanes. Here, partially graphitic AC decorated with few‐layer graphene is facilely fabricated by simple high‐temperature calcination. The graphitic transformation significantly enhances the antioxidation property, long‐term stability of AC during the ODH reaction, and especially dramatically increases the graphitic edge areas in which the active ketonic carbonyl groups are selectively formed in ODH reactions. A high reactivity with 41.5 % selectivity and 13.2 % yield to C₄ alkenes were obtained at 450 °C over the optimized catalyst, which is superior to all the previously reported carbon catalysts and shows a great potential for industrial application.

中文翻译：

---

氧化脱氢反应的高效无金属催化剂：少层石墨烯修饰的活性炭

活性炭（AC）由于其低成本，可扩展的生产，高比表面积和丰富的暴露边缘而被广泛用于催化领域。由于非晶态结构，传统的交流电在O ₂存在的情况下是不稳定的在高温下，这阻碍了AC催化剂在烷烃的氧化脱氢（ODH）中的应用。在此，通过简单的高温煅烧就可以轻松地制造出用少量石墨烯装饰的部分石墨AC。石墨化转变显着增强了ODH反应过程中AC的抗氧化性能和长期稳定性，尤其是显着增加了在ODH反应中选择性形成活性酮羰基的石墨边缘区域。在450°C的条件下，与优化的催化剂相比，该催化剂具有较高的反应活性，对C ₄烯烃的选择性为41.5％，产率为13.2％，优于所有先前报道的碳催化剂，在工业应用中显示出巨大的潜力。