黑龙江科技学院学报2011，Vol.21Issue(1)：27-30,4.
用非高纯鳞片石墨制备无硫低灰分可膨胀石墨
Preparation of sulfur-free and low ash expandable graphite from non-high purity flake graphite
刘丽来 1郝鑫鑫 2丁慧贤1
作者信息
- 1. 黑龙江科技学院,现代分析测试研究中心,哈尔滨,150027
- 2. 中国石油集团大庆石化公司,化工一厂,黑龙江,大庆,163000
- 折叠
摘要
Abstract
This paper features the preparation of sulfur-free and low ash expandable graphite from non-high purity mixture mesh natural flake graphite, concentrated nitric acid and potassium permanganate as oxidant by a chemical method.The paper introduces the determination of optimized conditions for preparing the expandable graphite by an orthogonal test method and gives an initial analysis of relevant factors.Results show that the optimum ratio of flake graphite: potassium permanganate: nitric acid of 1.0: 0.2: 6.0, reaction time of 60 min, reaction temperature of 40 ℃ and 2 mL hydrogen peroxide allow the production of sulfur-free and low ash expandable graphite of 260 mL/g.The biggest factor affecting reaction system is amount of potassium permanganate, followed by the amount of nitric acid, reaction temperature and reaction time.This technology of simpler process, lower cost and easier operation promises to come into use in manufacturing industry.关键词
插层/可膨胀石墨/无硫/正交实验Key words
intercalation/ expandable graphite/ sulfur-free/ orthogonal experiment分类
化学化工引用本文复制引用
刘丽来,郝鑫鑫,丁慧贤..用非高纯鳞片石墨制备无硫低灰分可膨胀石墨[J].黑龙江科技学院学报,2011,21(1):27-30,4.
