A modification route of nanocarbon catalyst based on Grignard reagent reduction of oxidized carbon nanotubes (o-CNTs) has been developed for oxidative dehydrogenation (ODH) of n-butane. The o-CNTs contain considerable amount of electrophilic oxygen species which are responsible for deep oxidation side-reactions and the alkene selectivity in ODH is low. After Grignard reduction, the corresponding electrophilic oxygen groups on the surface of the catalyst were eliminated and the basicity increased. As a result, the side-reactions in ODH were prohibited and the alkene selectivity was significantly improved compared with o-CNTs. The chlorine containing Mg/Cl species were found to have positive effect on the improvement of C₄H₈ alkene yield. This study provides a method of the preparation of nanocarbon catalyst to achieve higher alkene selectivity for the dehydrogenation reaction.

已经开发了基于格氏试剂还原氧化碳纳米管（o-CNTs）的纳米碳催化剂的改性途径，用于正丁烷的氧化脱氢（ODH）。o-CNT包含大量的亲电子氧，这些氧可导致深度氧化副反应，而ODH中的烯烃选择性低。格氏试剂还原后，消除了催化剂表面上相应的亲电子氧基团并增加了碱度。结果，与o-CNT相比，ODH中的副反应被禁止并且烯烃的选择性显着提高。发现含氯的Mg / Cl物质对改善C ₄ H ₈具有积极作用烯烃收率。这项研究提供了一种制备纳米碳催化剂的方法，以实现对脱氢反应更高的烯烃选择性。