Synthesis and crystal structure of nitrate enclathrated sodalite Na8[AlSiO4]6(NO3)2

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autoren

  • Josef Christian Buhl
  • Jürgen Löns

Organisationseinheiten

Externe Organisationen

  • Westfälische Wilhelms-Universität Münster (WWU)
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Seiten (von - bis)41-47
Seitenumfang7
FachzeitschriftJournal of alloys and compounds
Jahrgang235
Ausgabenummer1
PublikationsstatusVeröffentlicht - 1 März 1996

Abstract

The hydrothermal formation of sodalites in the system Na2O-ZSiO2-Al2O3-NaNO 3-H2O has been investigated. Besides temperature and pressure, the initial materials of synthesis were varied to obtain the most perfect single crystals of nitrate enclathrated in sodalite. The alkaline transformation of Zeolite A as the starting aluminosilicate at a temperature of 648 K and a pressure of 0.1 GPa has been proved to be the best method for sodalite synthesis. A single crystal structure refinement, as well as MAS NMR of the nucleus 23Na of nitrate sodalite, have been carried out to determine the position of the enclathrated nitrate anions in the open sodalite structure. The nitrogen atoms are located in an off-centre position within the sodalite cages. One of the three oxygen atoms of the nitrate group is positioned near the centre of a face of the tetrahedron formed by the sodium cations. The two remaining oxygen atoms of the nitrate group are located near the middle of the edges of the sodium tetrahedron. This arrangement of the nitrate anions is responsible for two split-positions of the sodium cations according to an occupancy ratio of 3:1.

ASJC Scopus Sachgebiete

Zitieren

Synthesis and crystal structure of nitrate enclathrated sodalite Na8[AlSiO4]6(NO3)2. / Buhl, Josef Christian; Löns, Jürgen.
in: Journal of alloys and compounds, Jahrgang 235, Nr. 1, 01.03.1996, S. 41-47.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Buhl JC, Löns J. Synthesis and crystal structure of nitrate enclathrated sodalite Na8[AlSiO4]6(NO3)2. Journal of alloys and compounds. 1996 Mär 1;235(1):41-47. doi: 10.1016/0925-8388(95)02148-5
Buhl, Josef Christian ; Löns, Jürgen. / Synthesis and crystal structure of nitrate enclathrated sodalite Na8[AlSiO4]6(NO3)2. in: Journal of alloys and compounds. 1996 ; Jahrgang 235, Nr. 1. S. 41-47.
Download
@article{a39c346bf35c411da73e3b23cf0fd725,
title = "Synthesis and crystal structure of nitrate enclathrated sodalite Na8[AlSiO4]6(NO3)2",
abstract = "The hydrothermal formation of sodalites in the system Na2O-ZSiO2-Al2O3-NaNO 3-H2O has been investigated. Besides temperature and pressure, the initial materials of synthesis were varied to obtain the most perfect single crystals of nitrate enclathrated in sodalite. The alkaline transformation of Zeolite A as the starting aluminosilicate at a temperature of 648 K and a pressure of 0.1 GPa has been proved to be the best method for sodalite synthesis. A single crystal structure refinement, as well as MAS NMR of the nucleus 23Na of nitrate sodalite, have been carried out to determine the position of the enclathrated nitrate anions in the open sodalite structure. The nitrogen atoms are located in an off-centre position within the sodalite cages. One of the three oxygen atoms of the nitrate group is positioned near the centre of a face of the tetrahedron formed by the sodium cations. The two remaining oxygen atoms of the nitrate group are located near the middle of the edges of the sodium tetrahedron. This arrangement of the nitrate anions is responsible for two split-positions of the sodium cations according to an occupancy ratio of 3:1.",
keywords = "Enclathration compounds, Hydrothermal synthesis, MAS NMR, Nitrate sodalite, Structure refinement",
author = "Buhl, {Josef Christian} and J{\"u}rgen L{\"o}ns",
year = "1996",
month = mar,
day = "1",
doi = "10.1016/0925-8388(95)02148-5",
language = "English",
volume = "235",
pages = "41--47",
journal = "Journal of alloys and compounds",
issn = "0925-8388",
publisher = "Elsevier BV",
number = "1",

}

Download

TY - JOUR

T1 - Synthesis and crystal structure of nitrate enclathrated sodalite Na8[AlSiO4]6(NO3)2

AU - Buhl, Josef Christian

AU - Löns, Jürgen

PY - 1996/3/1

Y1 - 1996/3/1

N2 - The hydrothermal formation of sodalites in the system Na2O-ZSiO2-Al2O3-NaNO 3-H2O has been investigated. Besides temperature and pressure, the initial materials of synthesis were varied to obtain the most perfect single crystals of nitrate enclathrated in sodalite. The alkaline transformation of Zeolite A as the starting aluminosilicate at a temperature of 648 K and a pressure of 0.1 GPa has been proved to be the best method for sodalite synthesis. A single crystal structure refinement, as well as MAS NMR of the nucleus 23Na of nitrate sodalite, have been carried out to determine the position of the enclathrated nitrate anions in the open sodalite structure. The nitrogen atoms are located in an off-centre position within the sodalite cages. One of the three oxygen atoms of the nitrate group is positioned near the centre of a face of the tetrahedron formed by the sodium cations. The two remaining oxygen atoms of the nitrate group are located near the middle of the edges of the sodium tetrahedron. This arrangement of the nitrate anions is responsible for two split-positions of the sodium cations according to an occupancy ratio of 3:1.

AB - The hydrothermal formation of sodalites in the system Na2O-ZSiO2-Al2O3-NaNO 3-H2O has been investigated. Besides temperature and pressure, the initial materials of synthesis were varied to obtain the most perfect single crystals of nitrate enclathrated in sodalite. The alkaline transformation of Zeolite A as the starting aluminosilicate at a temperature of 648 K and a pressure of 0.1 GPa has been proved to be the best method for sodalite synthesis. A single crystal structure refinement, as well as MAS NMR of the nucleus 23Na of nitrate sodalite, have been carried out to determine the position of the enclathrated nitrate anions in the open sodalite structure. The nitrogen atoms are located in an off-centre position within the sodalite cages. One of the three oxygen atoms of the nitrate group is positioned near the centre of a face of the tetrahedron formed by the sodium cations. The two remaining oxygen atoms of the nitrate group are located near the middle of the edges of the sodium tetrahedron. This arrangement of the nitrate anions is responsible for two split-positions of the sodium cations according to an occupancy ratio of 3:1.

KW - Enclathration compounds

KW - Hydrothermal synthesis

KW - MAS NMR

KW - Nitrate sodalite

KW - Structure refinement

UR - http://www.scopus.com/inward/record.url?scp=0030105620&partnerID=8YFLogxK

U2 - 10.1016/0925-8388(95)02148-5

DO - 10.1016/0925-8388(95)02148-5

M3 - Article

AN - SCOPUS:0030105620

VL - 235

SP - 41

EP - 47

JO - Journal of alloys and compounds

JF - Journal of alloys and compounds

SN - 0925-8388

IS - 1

ER -