Stability of dioctahedral 2:1 phyllosilicate edge structures based on pyrophyllite models

Verfasser / Beitragende:
[Lasse Lavikainen, Janne Hirvi, Seppo Kasa, Timothy Schatz, Tapani Pakkanen]
Ort, Verlag, Jahr:
2015
Enthalten in:
Theoretical Chemistry Accounts, 134/9(2015-09-01), 1-8
Format:
Artikel (online)
ID: 605487332
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024 7 0 |a 10.1007/s00214-015-1715-6  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00214-015-1715-6 
245 0 0 |a Stability of dioctahedral 2:1 phyllosilicate edge structures based on pyrophyllite models  |h [Elektronische Daten]  |c [Lasse Lavikainen, Janne Hirvi, Seppo Kasa, Timothy Schatz, Tapani Pakkanen] 
520 3 |a Phyllosilicates and related clay minerals are of interest due to a variety of technological applications and impact on natural soils. The important properties of these layered minerals arise from their surface chemistry, and therefore understanding the characteristics of their surfaces is desirable. The common focus has been on the basal surfaces, whereas the edge surfaces are little studied. One of the underlying reasons is that the edge surfaces exhibit various possible geometries making it difficult to assume a certain structure with a confidence. The present paper is dedicated to the stability of the edge structures and introduces the largest quantum chemical study on the subject to date. Pyrophyllite was used as a model species. Edge stabilities were determined as cleavage energies, including edge termination by dissociative sorption of water with variable proton configurations. The results show similar stabilities for various edge structures parallel to the (010), (130), (110) and (100) lattice planes, but the edges cleaved by cutting the fewest bonds are suggested to be the most stable on the basis of free energy estimation. The dominant edge is predicted to appear on the (110) crystal face. 
540 |a Springer-Verlag Berlin Heidelberg, 2015 
690 7 |a Pyrophyllite  |2 nationallicence 
690 7 |a Phyllosilicate  |2 nationallicence 
690 7 |a Edge  |2 nationallicence 
690 7 |a Surface  |2 nationallicence 
690 7 |a Cleavage  |2 nationallicence 
690 7 |a Clay  |2 nationallicence 
700 1 |a Lavikainen  |D Lasse  |u Department of Chemistry, University of Eastern Finland, P.O. Box 111, 80101, Joensuu, Finland  |4 aut 
700 1 |a Hirvi  |D Janne  |u Department of Chemistry, University of Eastern Finland, P.O. Box 111, 80101, Joensuu, Finland  |4 aut 
700 1 |a Kasa  |D Seppo  |u Posiva Oy, Olkiluoto, 27160, Eurajoki, Finland  |4 aut 
700 1 |a Schatz  |D Timothy  |u B+Tech Oy, Laulukuja 4, 00420, Helsinki, Finland  |4 aut 
700 1 |a Pakkanen  |D Tapani  |u Department of Chemistry, University of Eastern Finland, P.O. Box 111, 80101, Joensuu, Finland  |4 aut 
773 0 |t Theoretical Chemistry Accounts  |d Springer Berlin Heidelberg  |g 134/9(2015-09-01), 1-8  |x 1432-881X  |q 134:9<1  |1 2015  |2 134  |o 214 
856 4 0 |u https://doi.org/10.1007/s00214-015-1715-6  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00214-015-1715-6  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Lavikainen  |D Lasse  |u Department of Chemistry, University of Eastern Finland, P.O. Box 111, 80101, Joensuu, Finland  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Hirvi  |D Janne  |u Department of Chemistry, University of Eastern Finland, P.O. Box 111, 80101, Joensuu, Finland  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Kasa  |D Seppo  |u Posiva Oy, Olkiluoto, 27160, Eurajoki, Finland  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Schatz  |D Timothy  |u B+Tech Oy, Laulukuja 4, 00420, Helsinki, Finland  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Pakkanen  |D Tapani  |u Department of Chemistry, University of Eastern Finland, P.O. Box 111, 80101, Joensuu, Finland  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Theoretical Chemistry Accounts  |d Springer Berlin Heidelberg  |g 134/9(2015-09-01), 1-8  |x 1432-881X  |q 134:9<1  |1 2015  |2 134  |o 214