Optimization of operating conditions in the purification of graphite oxide dispersions
详细信息 查看全文
- 作者：Wei Tan ; Ying Liu ; Liyan Liu ; Ranhao Xing…
- 关键词：Graphite Oxide ; Purification ; Metal ions ; Theoretical Stage ; Orthogonal Experiment
- 刊名：Korean Journal of Chemical Engineering
- 出版年：2016
- 出版时间：November 2016
- 年：2016
- 卷：33
- 期：11
- 页码：3251-3257
- 全文大小：238 KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Industrial Chemistry and Chemical Engineering
Catalysis
Materials Science
Biotechnology - 出版者：Springer New York
- ISSN：1975-7220
- 卷排序：33
文摘
In the graphite oxide (GO) suspension purification process, some metallic impurities in GO cannot be separated. The residual metallic impurities dominate graphite oxide properties and have a negative influence on applications. Therefore, the removal of metallic impurities from graphite oxide has been brought into focus now. Single factor experiments and orthogonal experiments are used to get the optimal purification condition. The results show that purification agent, temperature, stirring intensity and contact time affect the purification degree, and the purification agent is the most important element for the purification efficiency. The optimal purification condition is 10% hydrochloric acid (H10), 20 °C, 0 rpm and 60 min. Besides, the theoretical stage is calculated by the mass conservation equation and distribution balance equation and the minimum stage is 3 under the optimal purification condition.