中文摘要：

以天然矿物埃洛石为模板,蔗糖为碳源合成了具有“壳-核”结构的中孔炭。通过 SEM、TEM、N2吸附、XRD、Raman、TG 对样品进行了形貌和结构表征。结果表明：模板炭具有一维管状结构,与埃洛石具有相似的形貌。经过700℃和900℃炭化后的模板炭比表面积达到了945 m2/g和1147 m2/g,孔容和中孔率也较埃洛石有了很大的提高。去除模板后得到的模板炭具有很高的纯度,为无定形炭。升高炭化温度,模板炭的拉曼特征参数R值降低,热分解温度由563℃提高到623℃。同时,对模板炭的形成过程及孔道形成机理进行了分析和讨论。

英文摘要：

Mesoporous carbons with“core-shell”structure were synthesized using halloysite as template and sucrose as carbon precursor by a template method. Field-emission scanning electron microscope （FE-SEM）, transmission elec-tron microscope （TEM）, nitrogen adsorption, X-ray diffraction, Raman spectra and Thermogravimetry （TG） were em-ployed to cheracterize the as-synthesized materials. Results indicate that the morphology and structure of the templated carbons are similar to that of halloysite. The carbons exhibit higher specific surface area （945 m2/g and 1147 m2/g）, higher pore volumes and mesopore volume fraction than that of halloysite. The carbons present high purity and amor-phous structure. Raising the carbonization temperature, the Raman characteristic parameter （R） of the carbons de-creases and their decomposition temperature increases from 563℃ to 623℃. At the same time, the formation mecha-nism of the carbons and their pores is also discussed.