The first zeolite with a tri-directional extra-large 14-ring pore system derived using a phosphonium-based organic molecule
2015 (English)In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 51, no 36, 7602-7605 p.Article in journal (Refereed) Published
A new germanosilicate zeolite (denoted as ITQ-53) with extra-large pores has been synthesised using tri-tertbutylmethylphosphonium cation as the organic structure directing agent (OSDA). Rotation electron diffraction (RED) was used to identify ITQ-53 from an initially-synthesised sample containing impurities, and to solve its structure. The structure was refined against PXRD data of pure ITQ-53 samples obtained after synthesis optimisation. ITQ-53 is the first example of extra-large pore zeolites with tri-directional interconnected 14 x 14 x 14-ring channels. It is stable up to at least 650 degrees C. The structure of ITQ-53 changes from monoclinic to orthorhombic upon calcination.
Place, publisher, year, edition, pages
2015. Vol. 51, no 36, 7602-7605 p.
IdentifiersURN: urn:nbn:se:su:diva-117401DOI: 10.1039/c4cc10317cISI: 000353218700003PubMedID: 25697962OAI: oai:DiVA.org:su-117401DiVA: diva2:815259