| Autor: |
Boruntea CR; Haldor Topsøe A/S, Haldor Topsøes Alle 1, Kgs. Lyngby 2800, Denmark.; Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, Valencia 46022, Spain., Vennestrøm PNR; Umicore Denmark ApS, Nøjsomhedsvej 20, Kgs. Lyngby 2800, Denmark., Lundegaard LF; Haldor Topsøe A/S, Haldor Topsøes Alle 1, Kgs. Lyngby 2800, Denmark. |
| Jazyk: |
angličtina |
| Zdroj: |
IUCrJ [IUCrJ] 2019 Jan 01; Vol. 6 (Pt 1), pp. 66-71. Date of Electronic Publication: 2019 Jan 01 (Print Publication: 2019). |
| DOI: |
10.1107/S2052252518016111 |
| Abstrakt: |
During screening of the phase space using KOH and 1-methyl-4-aza-1-azoniabicyclo-[2.2.2]octane hydroxide (1-methyl-DABCO) under hydrothermal zeolite synthesis conditions, K-paracelsian was synthesized. Scanning electron microscopy, energy dispersive X-ray spectroscopy and ex situ powder X-ray diffraction analysis revealed a material that is compositionally closely related to the mineral microcline and structurally closely related to the mineral paracelsian, both of which are feldspars. In contrast to the feldspars, K-paracelsian contains intrazeolitic water corresponding to one molecule per cage. In the case of K-paracelsian it might be useful to consider it a link between feldspars and zeolites. It was also shown that K-paracelsian can be described as the simplest endmember of a family of dense double-crankshaft zeolite topologies. By applying the identified building principle, a number of known zeolite topologies can be constructed. Furthermore, it facilitates the construction of a range of hypothetical small-pore structures that are crystallo-chemically healthy, but which have not yet been realized experimentally. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
|
