Preparation of highly-expandable graphite using waste liquid propellants of nitric-27S as one of intercalating agents

Autor:	Xuan-jun Wang, Jian Zhang, Ruiying Luo, Hui Li, Ya-ping Chen, Jiang-song Zhang, Li Shuyan
Rok vydání:	2012
Předmět:	Propellant Materials science Intercalation (chemistry) Inorganic chemistry Sulfuric acid General Chemistry Acetic acid chemistry.chemical_compound Potassium permanganate chemistry Volume (thermodynamics) Volume expansion General Materials Science Graphite
Zdroj:	Carbon. 50:2063
ISSN:	0008-6223
DOI:	10.1016/j.carbon.2012.01.016
Popis:	Highly-expandable graphite was prepared by chemical oxidization using flake graphite as the host material and waste liquid propellants of nitric-27S,potassium permanganate,sulfuric acid and acetic acid as guest compounds.Various factors influencing the volume expansion were studied,such as the amounts of potassium permanganate,nitric-27S and acetic acid.Optimum preparation conditions were obtained using orthogonal experimental design.The preparation of graphite intercalation compounds was confirmed by SEM and XRD.Results showed that the most expandable graphite with a expansion volume of 320 mL·g-1 was obtained at 40 ℃ for 90 min using flake graphite,potassium permanganate,nitric-27S,sulfuric acid and acetic acid in the following respective amounts: 1 g,1 g,1.25 mL,1.25 mL and 2 mL.The amount of potassium permanganate is the most important factor affecting the expansion volume.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::eba1610f190f63ac5b24119a26ca1b91 https://doi.org/10.1016/j.carbon.2012.01.016 Zobrazit plný text záznamu Full Text from ScienceDirect