Thommes M (2002)
Publication Type: Journal article, Original article
Subtype: other
Publication year: 2002
Publisher: Elsevier Science B.V.
Book Volume: 142B
Pages Range: 1695-1702-1702
Journal Issue: Impact of Zeolites and Other Porous Materials on the New Technologies at the Beginning of the New Millennium
We report results of an exptl. study of pore condensation and hysteresis phenomena of nitrogen and argon in pristine MCM-48 and MCM-41 silica materials (pore diam. range: 3.5 - 5 nm). An anal. of nitrogen and argon adsorption/desorption isotherms obtained on a MCM-48 silica sample (pore diam. 4.6 nm) at 77 K and 87 K, resp., leads to the conclusion, that - although MCM-48 consists of a unique, three-dimensional pore network - the desorption branch of the argon sorption hysteresis loop (type H1) corresponds to the pore diam. However, the sorption hysteresis behavior for argon sorption at 87 K and 77 K appears to be peculiar in MCM-41 and MCM-48 materials of smaller pore diams. (i.e. in the range between 3.5 and 4.2 nm). A clear correlation between the desorption branch of the obsd. argon hysteresis loops and the pore diam. is not possible anymore in this pore diam. range. Further, a detailed comparison of the pore condensation and hysteresis behavior in MCM-48 and MCM-41 silica materials of nearly equal pore diams. reveals that sorption hysteresis loops are wider in the pseudo-one-dimensional pores of MCM-41 compared to the three-dimensional pore system of MCM-48 silica. [on SciFinder(R)]
APA:
Thommes, M. (2002). Characterization of mesoporous solids: pore condensation and sorption hysteresis phenomena in mesoporous molecular sieves. Studies in Surface Science and Catalysis, 142B(Impact of Zeolites and Other Porous Materials on the New Technologies at the Beginning of the New Millennium), 1695-1702-1702.
MLA:
Thommes, Matthias. "Characterization of mesoporous solids: pore condensation and sorption hysteresis phenomena in mesoporous molecular sieves." Studies in Surface Science and Catalysis 142B.Impact of Zeolites and Other Porous Materials on the New Technologies at the Beginning of the New Millennium (2002): 1695-1702-1702.
BibTeX: Download