Repeatable hydrogen adsorption using nanostructured graphite at room temperature

Autor:	Shigemitsu Tsutsui, Hisashi Kajiura, Yosuke Murakami, Koji Kadono
Rok vydání:	2003
Předmět:	Materials science Physics and Astronomy (miscellaneous) Hydrogen Cryo-adsorption business.industry chemistry.chemical_element Crystallography Adsorption chemistry Chemical engineering Transmission electron microscopy Desorption Hydrogen economy X-ray crystallography Graphite business
Zdroj:	Applied Physics Letters. 82:1929-1931
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.1563053
Popis:	Repeatable hydrogen adsorption and desorption by nanostructured graphite was confirmed using a high-accuracy volumetric measuring apparatus at room temperature. The nanostructured graphite was prepared from graphite powder using a mechanical milling process at a pressure of 2.0×10−4 Pa. The untreated graphite adsorbed 0.02 wt % of hydrogen, while 0.20–0.25 wt % of hydrogen can be repeatedly adsorbed by the nanostructured graphite. Measurements of the hydrogen adsorption rate at constant pressure and pore-size distribution suggest that the hydrogen molecules are adsorbed through a diffusion process into pores with a diameter less than 1 nm.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b83df4ff668f6cc6b0d27ce66998081a https://doi.org/10.1063/1.1563053 Zobrazit plný text záznamu