摘要
本文采用化学氧化直接插层和分步插层法制备含磷化合物插层GIC,通过对GIC的受热失重变化及膨胀前后石墨层间结构变化的研究表明:直接插层体系的最佳工艺条件为石墨∶H2SO4∶K2Cr2O4(质量比)=1∶4.92∶0.1;分步插层法制备含磷化合物插层GIC的最佳工艺条件为:对直接插层产物水洗pH值为3后,用含磷化合物溶液在30℃下浸泡1h。分步插层法所制得含磷化合物插层GIC的抗氧化性能提高。X-射线衍射(XRD)对GIC的结构研究表明,插层后石墨层间距离发生了显著变化。
Two methods, direct intercalation and two-step method were used to prepare the GICs intercalated with phosphorus compounds. Thermal decomposition and structural of as prepared GIC are investigated by thermal weight loss and the interlayer structure of graphite before and after expansion. The optimal synthesis con- dition of the direct method is that the ratio of graphite： H2SO4： K2 Cr207 is 1：4.29：0.1 （weight ratio）. The optimal synthesis condition of two - step method is that the first intercalated product is washed to pH = 3, and then is submerged into the solution of phosphorus compound for one hour. The anti - oxidation of the GIC intercalated with phosphorus compounds increases. It is that the interlayer distance of graphite is changed by X - ray diffraction and SEM.
出处
《化学工程师》
CAS
2007年第2期8-10,共3页
Chemical Engineer
基金
黑龙江省自然科学基金项目(E200613)
黑龙江省教育厅科学技术研究项目(11511064)
黑龙江省研究生创新基金
