On the relationship between unit cells and channel systems in high silica zeolites with the butterfly projection
Number of Authors: 5
2015 (English)In: Zeitschrift für Kristallographie - Crystalline Materials, ISSN 2194-4946, Vol. 230, no 5, 301-309 p.Article in journal (Refereed) Published
Zeolites are crystalline aluminosilicate framework materials with corner sharing TO 4 (T = Al, Si) tetrahedra forming well-defined pores and channels. Many zeolites are built from similar building units (i.e., isolated units, chains or layers), which are connected in different ways to form a variety of topologies. We have identified ten zeolite frameworks that share the same two-dimensional butterfly net containing 5-, 6- and 10-rings: (MRE)-M-star, FER, MEL, SZR, MFS, MFI, TUN, IMF, BOG and TON. Different orientations of the TO4 tetrahedra within the layer lead to different connectivities between neighboring layers. Some layers are corrugated and some are flat, resulting in different channel systems parallel to the layer. We found some interesting relationships between the unit cell parameters and this channel system that allow the size of the channels and their directions to be deduced from the unit cell dimensions. This may facilitate the prediction of new members of this zeolite family. In addition, other zeolites containing the butterfly layers are also discussed.
Place, publisher, year, edition, pages
2015. Vol. 230, no 5, 301-309 p.
structure prediction, structure relationship, structure solution, zeolites
Research subject Inorganic Chemistry
IdentifiersURN: urn:nbn:se:su:diva-117715DOI: 10.1515/zkri-2014-1821ISI: 000353815900003OAI: oai:DiVA.org:su-117715DiVA: diva2:820544