摘要
研究了一种以冰醋酸为反应介质，在少量浓Ｈ２ＳＯ４存在下，以重铬酸钾作为氧化剂制备低硫可膨胀石墨的新方法。在最佳制备条件下，可膨胀石墨产品的含硫量仅为０．６８％，膨胀石墨产品的含硫量为０．０８％，膨胀容积２６０ｍＬ·ｇ－１，水分０．１０５％，挥发分５．５％，灰分０．７６％，ｐＨ值５，并采用紫外分光光度计对产品进行了分析。
The method reported in this paper is a new
approach of preparing lower sulfur content expandable graphite using glacial acetic acid as
medium and K 2Cr 2O 7 as oxidant.The sulfur content of the expandable graphite is only
0.68%; the sulfur content of the expanded graphite is 0.08 %. The expandable volume is 260
mL·g -1 . The moisture, volatile fraction, ash content and pH are 0.105%, 5.5 %,0.76% and 5,
respectively.The UV spectrometry was used to analyze the product.
出处
《新型炭材料》
SCIE
EI
CAS
CSCD
1999年第1期65-68,共4页
New Carbon Materials
关键词
低硫
可膨胀石墨
制备
石墨
人造石墨
Lower sulfur
content expandable graphite,Preparation,Medium,Sulfur content.
