Zeng Shangjing, Liu Shijun, Qi Yanlong, Cui Long, Dai Quanquan, Bai Chenxi
Key Laboratory of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 Jilin China
RSC Adv. 2018 Mar 22;8(21):11462-11468. doi: 10.1039/c8ra01270a. eCollection 2018 Mar 21.
Porous carbon is exceptionally useful, but it remains a great challenge to develop a facile route to prepare porous carbon materials with hierarchical structure and enhanced porosity. This work demonstrates a novel synthetic pathway for hierarchical carbonaceous materials (HCM) using isobutene and formaldehyde as carbon precursors silica templates impregnated with phosphorus. Different from the traditional nanocasting method, the formation of the carbon structure is caused by heavy coke deposits on the solid catalyst in the course of the olefin/aldehyde vapor reaction. The coke-derived carbonaceous materials indicated by transmission electron microscopy (TEM) and nitrogen adsorption-desorption measurement are hierarchically mesoporous structures with a large surface area (971 m g) and pore volume (1.91 cm g). We have demonstrated for the first time that the olefin/aldehyde reaction may provide a convenient route to develop a porous carbon texture. The newly developed method may lead to porous carbon having scientific and technological importance in adsorption and catalysis applications.
多孔碳非常有用，但开发一种简便的方法来制备具有分级结构和更高孔隙率的多孔碳材料仍然是一个巨大的挑战。这项工作展示了一种使用异丁烯和甲醛作为碳前驱体、浸渍有磷的二氧化硅模板来制备分级碳质材料（HCM）的新型合成途径。与传统的纳米铸造方法不同，碳结构的形成是由烯烃/醛气相反应过程中固体催化剂上大量的焦炭沉积引起的。通过透射电子显微镜（TEM）和氮吸附-脱附测量表明，焦炭衍生的碳质材料是具有大表面积（971 m²/g）和孔体积（1.91 cm³/g）的分级介孔结构。我们首次证明烯烃/醛反应可能为形成多孔碳结构提供一条便捷途径。新开发的方法可能会导致在吸附和催化应用中具有科学和技术重要性的多孔碳。
