Adsorption of Molecular Gases on Silver/Carbon Nanotube Composites at Low Temperatures and Low Pressures. (9th January 2014)

• Record Type: Journal Article
• Authors: Barberio, M.; Barone, P.; Stranges, F.; Romano, R. A.; Xu, F.; Bonanno, A.
• Other Names: Xu Yang Academic Editor.
• Is Part Of: Journal of chemistry. Volume 2014(2014)
• Publication Date: 2014-01-09
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1155/2014/816193
• Languages: English
• ISSNs: 2090-9063

Abstract

Abstract : We present an experimental study adsorption of molecular gases (N2, H2, O2, CH4, C2 H4, and C2 H6 ) on multiwalled carbon nanotubes (MWCNTs) and MWCNT doped with Ag at low temperatures (35 K) and pressures (10 −6 Torr) using the temperature programmed desorption technique. Our results show that the desorption kinetics is of the first order; furthermore comparative measurements indicate that Ag/MWCNTs have an adsorption capacity higher than that of a pure sample suggesting that these composites are good candidates as gas cryosorbers for applications in cryopumps or sensor of latest generation.