Production and use of crystalline hydrogen-phosphate compounds having layer structure
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United States of America Patent
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Feb 4, 1992
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N/A
app pub date -
Oct 25, 1990
filing date -
Nov 2, 1989
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Expired
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Abstract
A process for preparing a crystalline layered hydrogenphosphate in a shortened period of time in high efficiency, which comprises reacting a tetravalent metal compound with phosphoric acid or its salt at an elevated temperature with introducing steam into the reaction system. Crystalline layered cerium(IV) bis(hydrogen-phosphate), particularly cerium(IV) bis(hydrogen-phosphate) dihydrate prepared by the above process, has an excellent ability of selectively adsorbing cesium ion, and is useful as a cesium ion adsorbent.
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