K-EGICs合成条件对阶结构的影响  

Effect of K-EGICs synthesis conditions on the stage structures

作　　者：陈加藏[1] 陈丽涛[1] 曹宏[2] 马恩宝[2] 

机构地区：[1]浙江工业大学化学工程与材料学院,浙江杭州310032 [2]武汉化工学院材料科学与工程学院,湖北武汉430074

出　　处：《浙江工业大学学报》2005年第2期129-133,共5页Journal of Zhejiang University of Technology

基　　金：浙江省自然科学基金资助项目(E0206)

摘　　要：用混合法分别对天然鳞片石墨和膨胀石墨(expandedgraphite,EG)进行碱金属钾插层生成钾石墨层间化合物(potassium-graphiteintercalationcompounds,K-GICs)和钾膨胀石墨层间化合物(potassium-expandedgraphiteintercalationcompounds,K-EGICs),通过XRD分析发现K-EG-ICs在氮气环境中明显比K-GICs稳定.改变温度和反应时间,K-EGICs的阶结构没有很明显的变化,但其颗粒度与反应时搅拌速度有关.这是由EG和K-EGICs本身特殊的阶结构如EG(002)面网间距的增大等诸多因素决定的.K-GICs (potassium-graphite intercalation compounds) and K-EGICs (potassium-expanded graphite intercalation compounds) were synthesized by intercalating alkali metal potassium into the interlayer of natural graphite flakes and EG (expanded graphite) in the nitrogen environment, respectively. The X-ray diffraction analysis found that the K-EGICs are more stable than the K-GICs. No evident transformation was found with the variations in reaction temperature and in reaction time. The size-range, however, seemed to be related to the stirring speed. Those may due to the special stage structures of EG and K-EGICs, such as the widening of the distance between (002) crystal plane and some other factors.

关 键 词：阶结构 合成条件 石墨层间化合物 天然鳞片石墨 XRD分析 膨胀石墨 反应时间 搅拌速度 混合法 金属钾 气环境 多因素 颗粒度 插层 EG 

分 类 号：TQ165[化学工程—高温制品工业] O613.71[理学—无机化学]