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

doi:10.1016/0167-2738(91)90107-M

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

Research output: Contribution to journal › Article › Academic › peer-review

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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 language	English
Pages (from-to)	93-100
Number of pages	8
Journal	Solid State Ionics
Volume	45
Issue number	1-2
DOIs	https://doi.org/10.1016/0167-2738(91)90107-M
Publication status	Published - 1991

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@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",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

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

SN - 0167-2738

VL - 45

SP - 93

EP - 100

JO - Solid State Ionics

JF - Solid State Ionics

IS - 1-2

ER -

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

Abstract

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