稻壳制备石墨化碳研究  

Preparation of graphitized carbon from rice husk

作　　者：张家荣 贾毅伟 陈果 乐治平 ZHANG Jiarong;JIA Yiwei;CHEN Guo;LE Zhiping(College of Chemistry,Nanchang University,Nanchang 330031,China)

机构地区：[1]南昌大学化学学院,江西南昌330031

出　　处：《南昌大学学报（工科版）》2020年第2期124-128,共5页Journal of Nanchang University(Engineering & Technology)

基　　金：国家自然科学基金资助项目(21466021)。

摘　　要：以稻壳为原料,经过碳化后再通过催化石墨化制得石墨化碳。实验采用X射线衍射(XRD)、拉曼光谱对石墨化产物进行表征。研究发现当碳化稻壳中加入Fe基催化剂进行石墨化,其产物的XRD图中26°出现归属石墨(002)的强尖锐峰,其拉曼图谱中,R值为0.38;未添加催化剂和添加Ni基催化剂或者Fe基和Ni基11混合催化剂时,石墨(002)峰的强度较小,且R值都大于0.38,因此Fe对碳化稻壳石墨化具有更好的催化作用。实验考察了催化剂及用量、温度、时间等条件对石墨化的影响,得出石墨化温度为1000℃,恒温时间为2.5 h,催化剂为Fe基催化剂,用量为5 mmol·g^-1的最优化条件。Graphitized carbon was prepared from rice husk by carbonization and subsequently catalytic graphitization.The graphitized samples were characterized using X-ray diffraction(XRD)and Raman spectroscopy.In XRD pattern of graphitized sample under Fe-based catalyst,a strong and sharp peak at 26°,which was corresponding to the typical(002)reections of graphitic carbon,indicated that rice husk was graphitized.In the Raman spectrum of graphitized sample under Fe-based catalyst,the R was 0.38.When no catalyst was added and Ni-based catalyst or Fe-based and Ni-based 11 mixed catalyst was added,the intensity of graphite(002)peak was smaller and R was greater than 0.38.Therefore,Fe had a better catalytic effect on the graphitization of carbonized rice husk.The optimal graphitization conditions were determined as followingsgraphitization temperature was 1000℃,holding time was 2.5 h,and used Fe-based catalyst with a dosage of 5 mmol·g^-1.

关 键 词：催化 石墨化 稻壳 石墨化碳 

分 类 号：TQ35[化学工程]