含磷石墨层间化合物的制备及其膨化性能研究  

Preparation and expansion properties of a graphite intercalation compound containing phosphorus

作　　者：周明善[1] 黄遥[1] 陶勇[2] 

机构地区：[1]云南开放大学化工学院,云南昆明650023 [2]南京理工大学化工学院,江苏南京210094

出　　处：《新型炭材料》2015年第5期438-444,共7页New Carbon Materials

摘　　要：以天然鳞片石墨、HCl O4、H3PO4、Cr O3为原料,按质量比1∶1∶2∶0.3,利用化学氧化法制备出低温易膨胀、高膨胀容积的石墨层间化合物,300℃时膨胀容积为350 m L·g-1,800℃时达到最大膨胀容积610 m L·g-1,明显优于传统硫酸插层的石墨层间化合物。采用SEM、EDS、XPS、FT-IR、XRD、TG等技术对石墨层间化合物的组成、结构、性能进行表征和分析,结果表明:石墨层间的插入物为PO3-4、Cl O-4、Cr2O2-7;并对化学氧化法插层机理进行了探讨。A graphite intercalation compound （GIC） was prepared by the chemical oxidation method using natural graphite flakes, HC104, H3PO4 and CrO3 as raw materials with mass ratios of 1：1：2：0.3. It was characterized by SEM, EDS, XPS, FT- IR, XRD and TGA. The expansion volume of the GIC was 350 mL.g-1 at 300 ℃ and reached the highest value of 610 mL-g-1 at 800 ℃. The expansion volume of this GIC was obviously higher than the GICs using H2 SO4 as an intercalating agent. The intercala- ting agents of the GIC were PO3- , C104 and Cr2027-.

关 键 词：石墨层间化合物 化学氧化 膨胀石墨 膨胀容积 

分 类 号：TQ127.11[化学工程—无机化工]