Comparison of Textural Information from Argon (87 K) and Nitrogen (77 K) Physisorption

0363303 - ÚCHP 2012 RIV NL eng J - Journal Article
Šolcová, Olga - Matějová, Lenka - Topka, Pavel - Musilová, Zuzana - Schneider, Petr
Comparison of Textural Information from Argon (87 K) and Nitrogen (77 K) Physisorption.
Journal of Porous Materials. Roč. 18, č. 5 (2011), s. 557-565. ISSN 1380-2224. E-ISSN 1573-4854
R&D Projects: GA ČR GA104/09/0694; GA ČR GP104/09/P290; GA AV ČR KAN400720701
Institutional research plan: CEZ:AV0Z40720504; CEZ:AV0Z40400503
Keywords : nitrogen adsorption isotherm * argon adsorption isotherm * zsm-5 zeolite
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 1.238, year: 2011

Argon (87 K) and nitrogen (77 K) adsorption of three types of porous samples (microporous, microporous-mesoporous and mesoporous) was evaluated. The shapes of isotherms, specific surface areas, mesopore-, micropore- and net pore volumes, pore-size distributions (PSD) and positions of micropore and mesopore PSD’s maxima were compared to ascertain the credibility of individual adsorbates for the texture information estimation. The shapes of adsorption isotherms for Ar and N2 of all samples are similar and the adsorbed amounts at relative pressure x = 0.975 differ slightly. For mesoporous samples some differences are observed between specific mesopore surface areas derived from nitrogen and argon isotherms.
Permanent Link: http://hdl.handle.net/11104/0199282