An Efficient Metal‐Free Catalyst for Oxidative Dehydrogenation Reaction: Activated Carbon Decorated with Few‐Layer Graphene. Issue 3 (15th January 2018)

• Record Type: Journal Article
• Authors: Zhang, Yajie; Diao, Jiangyong; Rong, Junfeng; Zhang, Jiayun; Xie, Jingxin; Huang, Fei; Jia, Zhimin; Liu, Hongyang; Su, Dang Sheng
• Is Part Of: ChemSusChem. Volume 11:Issue 3(2018)
• Page Start: 536
• Page End: 541
• Publication Date: 2018-01-15
• Subjects: activated carbon -- metal-free -- n-butane -- oxidative dehydrogenation -- partially graphitic; Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201702178
• Languages: English
• ISSNs: 1864-5631

Abstract

Abstract: 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. Abstract : Graphene deco : Activated carbon decorated with few‐layer graphene catalysts obtained from a facile and low‐cost approach exhibit high dehydrogenation selectivity for the oxidative dehydrogenation of the n ‐butane reaction. The selective formation of active ketonic carbonyl groups on the graphitic edge contributes to the outstanding catalytic performance.