黑龙江科技学院学报Issue(3)：247-250,255,5.DOI:10.3969/j.issn.2095-7262.2015.03.004
电化学法制备无硫可膨胀石墨的实验研究
Experimental study on preparation of sulfur-free expandable graphite by electrochemical method
摘要
Abstract
This paper is devoted to an experimental study on the preparation of the sulfur-free ex-pandable graphite using HClO4 and CH3 COOH as electrolyte, the 75 μm natural flake graphite as raw material and employing electrochemical method. The study involves analyzing the influence factors on the expansion volume( EV) by single factor experiments and characterizing the morphology and structure of expandable graphite and expanded graphite by SEM and XRD, and determining the content of sulfur. The study suggests that the optimum preparation conditions for sulfur-free expandable graphite are: graphite (g)∶electrolyte(mL) =1∶7, HClO4(mL)∶CH3COOH(mL) =4∶1,current density of 0. 06 A/cm2,reac-tion temperature of 20 ℃, reaction time of 60 min, the concentration of mixed acid of 70%, and the maximum EV of up to 150 mL/g. The study provides a way for the preparation of sulfur free and expand-able graphite.关键词
电化学法/可膨胀石墨/无硫/HClO4/CH3 COOHKey words
electrochemical method/expandable graphite/sulfur-free/HClO4/CH3 COOH分类
化学化工引用本文复制引用
周国江,冯晓彤,张伟君..电化学法制备无硫可膨胀石墨的实验研究[J].黑龙江科技学院学报,2015,(3):247-250,255,5.基金项目
国家国际科技合作专项项目(2014DFR40480) （2014DFR40480）
黑龙江省应用技术研究与开发计划项目(WBBA202) （WBBA202）
哈尔滨市应用技术研究与开发项目(2013AE4AW048) （2013AE4AW048）
