摘要
本文研究了一种以天然石墨和混酸为原料，高锰酸钾为氧化剂制备高膨胀容积可膨胀石墨的新方法。其最佳参数为：混酸与石墨的重量比为３∶１；高锰酸钾为石墨重量的８％；反应温度２５℃；反应时间０５ｈ。制得的可膨胀石墨每克可膨胀体积为３７５毫升，比传统方法制得的可膨胀石墨高出１７５ｍｌ／ｇ。
This paper reported a new method for preparing expansible graphite. The high expanded volume graphite was prepared in mixed acids solution using potassium permanganate as a oxidizing agent at room temperature. Its optimal parameters are as follows: weight ratio of mixed acid and graphite, 3∶1 ; weight ratio of potassium permanganate and graphite, 8%; reaction time, 0.5h; reaction temperature, 25℃. The expanded volume of the expansible graphite is 375 ml·g -1 , its expanded volume is 175 ml·g -1 more than one prepared by the traditional method. [WT5”HZ〗
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1997年第2期231-233,共3页
Chinese Journal of Inorganic Chemistry
关键词
石墨
可膨胀石墨
混酸
高锰酸钾
expansible graphite\ \ \ mixed acid\ \ \ potassium permanganate\ \ \ graphite Preparation
