Details
| Original language | English |
|---|---|
| Pages (from-to) | 143-149 |
| Number of pages | 7 |
| Journal | Journal of crystal growth |
| Volume | 108 |
| Issue number | 1-2 |
| Publication status | Published - 2 Jan 1991 |
Abstract
Single crystals of nitrite sodalite Na8[AlSiO4]6(NO2)2 prepared hydrothermally at 570 K and 0.1 GPa show cubic symmetry (a0 = 8.931(2) A ̊) and complete ordering of the framework T atoms (SG P43n). The thermal properties have been characterized by simultaneous thermal analysis (TG, DTG, DTA) and high temperature X-ray powder diffraction. Heating in air yields a nitrite/nitrate sodalite according to the oxidation of the enclosed salt molecules. This intra-cage reaction is characterized by IR spectroscopy and thermogravimetry under open system conditions. Additional X-ray powder diffraction data (Guinier-Simon heating technique) indicate an expansion of the sodalite framework during this formation of nitrate within the β-cages at 1000 K. The thermal decomposition of nitrite sodalite in an inert atmosphere (argon) occurs in the 950-1100 K interval, yielding a stuffed carnegieite phase.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Chemistry(all)
- Inorganic Chemistry
- Materials Science(all)
- Materials Chemistry
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In: Journal of crystal growth, Vol. 108, No. 1-2, 02.01.1991, p. 143-149.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Hydrothermal synthesis and characterization of nitrite sodalite single crystals
AU - Buhl, J. Ch
PY - 1991/1/2
Y1 - 1991/1/2
N2 - Single crystals of nitrite sodalite Na8[AlSiO4]6(NO2)2 prepared hydrothermally at 570 K and 0.1 GPa show cubic symmetry (a0 = 8.931(2) A ̊) and complete ordering of the framework T atoms (SG P43n). The thermal properties have been characterized by simultaneous thermal analysis (TG, DTG, DTA) and high temperature X-ray powder diffraction. Heating in air yields a nitrite/nitrate sodalite according to the oxidation of the enclosed salt molecules. This intra-cage reaction is characterized by IR spectroscopy and thermogravimetry under open system conditions. Additional X-ray powder diffraction data (Guinier-Simon heating technique) indicate an expansion of the sodalite framework during this formation of nitrate within the β-cages at 1000 K. The thermal decomposition of nitrite sodalite in an inert atmosphere (argon) occurs in the 950-1100 K interval, yielding a stuffed carnegieite phase.
AB - Single crystals of nitrite sodalite Na8[AlSiO4]6(NO2)2 prepared hydrothermally at 570 K and 0.1 GPa show cubic symmetry (a0 = 8.931(2) A ̊) and complete ordering of the framework T atoms (SG P43n). The thermal properties have been characterized by simultaneous thermal analysis (TG, DTG, DTA) and high temperature X-ray powder diffraction. Heating in air yields a nitrite/nitrate sodalite according to the oxidation of the enclosed salt molecules. This intra-cage reaction is characterized by IR spectroscopy and thermogravimetry under open system conditions. Additional X-ray powder diffraction data (Guinier-Simon heating technique) indicate an expansion of the sodalite framework during this formation of nitrate within the β-cages at 1000 K. The thermal decomposition of nitrite sodalite in an inert atmosphere (argon) occurs in the 950-1100 K interval, yielding a stuffed carnegieite phase.
UR - http://www.scopus.com/inward/record.url?scp=0026412518&partnerID=8YFLogxK
U2 - 10.1016/0022-0248(91)90362-9
DO - 10.1016/0022-0248(91)90362-9
M3 - Article
AN - SCOPUS:0026412518
VL - 108
SP - 143
EP - 149
JO - Journal of crystal growth
JF - Journal of crystal growth
SN - 0022-0248
IS - 1-2
ER -