Formation of CaO·10Al2O3 with the β-alumina-type structure by means of ion exchange exchange

J.A.M. Hoek, van, F.J.J. Loo, van, R. Metselaar, J.W. Haan, de, A.J. Berg, van den

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Abstract

The ion exchange properties of Na-ß-alumina were studied. Samples of Na-ß-alumina treated in a CaCl2 melt at 1173 K and then examined with X-ray energy dispersive spectroscopy. We were able to exchange the sodium ions completely for bivalent calcium ions. The calcium aluminate compound (CaO·10Al2O3) was characterized by powder X-ray diffraction and ²7Al NMR measurements and with these methods it was proved to have the ß-alumina-type structure. Heat treatments at 1173 K and 1373 K showed that the compound decomposes to CaO·6Al2O3 and Al2O3 and, therefore, is metastable at these temperatures.
Original languageEnglish
Pages (from-to)93-100
Number of pages8
JournalSolid State Ionics
Volume45
Issue number1-2
DOIs
Publication statusPublished - 1991

Fingerprint

Aluminum Oxide
Ion exchange
Alumina
aluminum oxides
calcium compounds
Calcium compounds
Ions
ions
X ray powder diffraction
calcium
Calcium
heat treatment
x rays
Sodium
Heat treatment
Nuclear magnetic resonance
sodium
nuclear magnetic resonance
diffraction
spectroscopy

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Hoek, van, J. A. M., Loo, van, F. J. J., Metselaar, R., Haan, de, J. W., & Berg, van den, A. J. (1991). Formation of CaO·10Al2O3 with the β-alumina-type structure by means of ion exchange exchange. Solid State Ionics, 45(1-2), 93-100. https://doi.org/10.1016/0167-2738(91)90107-M
Hoek, van, J.A.M. ; Loo, van, F.J.J. ; Metselaar, R. ; Haan, de, J.W. ; Berg, van den, A.J. / Formation of CaO·10Al2O3 with the β-alumina-type structure by means of ion exchange exchange. In: Solid State Ionics. 1991 ; Vol. 45, No. 1-2. pp. 93-100.
@article{904e61b16e8345ddb6dab9160525f89b,
title = "Formation of CaO·10Al2O3 with the β-alumina-type structure by means of ion exchange exchange",
abstract = "The ion exchange properties of Na-{\ss}-alumina were studied. Samples of Na-{\ss}-alumina treated in a CaCl2 melt at 1173 K and then examined with X-ray energy dispersive spectroscopy. We were able to exchange the sodium ions completely for bivalent calcium ions. The calcium aluminate compound (CaO·10Al2O3) was characterized by powder X-ray diffraction and ²7Al NMR measurements and with these methods it was proved to have the {\ss}-alumina-type structure. Heat treatments at 1173 K and 1373 K showed that the compound decomposes to CaO·6Al2O3 and Al2O3 and, therefore, is metastable at these temperatures.",
author = "{Hoek, van}, J.A.M. and {Loo, van}, F.J.J. and R. Metselaar and {Haan, de}, J.W. and {Berg, van den}, A.J.",
year = "1991",
doi = "10.1016/0167-2738(91)90107-M",
language = "English",
volume = "45",
pages = "93--100",
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Hoek, van, JAM, Loo, van, FJJ, Metselaar, R, Haan, de, JW & Berg, van den, AJ 1991, 'Formation of CaO·10Al2O3 with the β-alumina-type structure by means of ion exchange exchange', Solid State Ionics, vol. 45, no. 1-2, pp. 93-100. https://doi.org/10.1016/0167-2738(91)90107-M

Formation of CaO·10Al2O3 with the β-alumina-type structure by means of ion exchange exchange. / Hoek, van, J.A.M.; Loo, van, F.J.J.; Metselaar, R.; Haan, de, J.W.; Berg, van den, A.J.

In: Solid State Ionics, Vol. 45, No. 1-2, 1991, p. 93-100.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Formation of CaO·10Al2O3 with the β-alumina-type structure by means of ion exchange exchange

AU - Hoek, van, J.A.M.

AU - Loo, van, F.J.J.

AU - Metselaar, R.

AU - Haan, de, J.W.

AU - Berg, van den, A.J.

PY - 1991

Y1 - 1991

N2 - The ion exchange properties of Na-ß-alumina were studied. Samples of Na-ß-alumina treated in a CaCl2 melt at 1173 K and then examined with X-ray energy dispersive spectroscopy. We were able to exchange the sodium ions completely for bivalent calcium ions. The calcium aluminate compound (CaO·10Al2O3) was characterized by powder X-ray diffraction and ²7Al NMR measurements and with these methods it was proved to have the ß-alumina-type structure. Heat treatments at 1173 K and 1373 K showed that the compound decomposes to CaO·6Al2O3 and Al2O3 and, therefore, is metastable at these temperatures.

AB - The ion exchange properties of Na-ß-alumina were studied. Samples of Na-ß-alumina treated in a CaCl2 melt at 1173 K and then examined with X-ray energy dispersive spectroscopy. We were able to exchange the sodium ions completely for bivalent calcium ions. The calcium aluminate compound (CaO·10Al2O3) was characterized by powder X-ray diffraction and ²7Al NMR measurements and with these methods it was proved to have the ß-alumina-type structure. Heat treatments at 1173 K and 1373 K showed that the compound decomposes to CaO·6Al2O3 and Al2O3 and, therefore, is metastable at these temperatures.

U2 - 10.1016/0167-2738(91)90107-M

DO - 10.1016/0167-2738(91)90107-M

M3 - Article

VL - 45

SP - 93

EP - 100

JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

IS - 1-2

ER -