【摘要】 简述了石墨烯的结构和性质,对石墨烯的制备方法进行总结,重点论述其用于烷烃氧化脱氢体系中的研究进展。氧化石墨烯经过还原形成石墨烯,大部分羟基和环氧官能团可能被除去,但仍存在一些含氧官能团以及一定的缺陷位,边缘或缺陷处的羰基和醚基团都可以作为氧化脱氢的活性位,石墨烯复合非金属催化剂对烷烃氧化脱氢体系表现出较好的烯烃选择性。指出石墨烯复合材料在氧气气氛中不稳定性,需要探索出更好的方法来提高稳定性和寿命。更多还原

【Abstract】 The structure and properties of graphene are briefly described.The preparation methods of graphene are summarized,and the research progress in the oxidative dehydrogenation of alkane is mainly emphasized.Graphene oxide is reduced to form graphene,most of the hydroxyl and epoxy functional groups may be removed,but some oxygen-containing functional groups and certain defect sites still exist.Both of carbonyl and ether groups at the edge or defect can serve as active sites for oxidative dehydrogenation.Composite catalysts of graphene and non metal exhibit good olefin selectivity for the alkane oxidative dehydrogenation.Instability of graphene composites in an oxygen atmosphere is pointed out.It is necessary to explore better methods to improve stability and lifetime of graphene composites.更多还原