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Studies on the preparation of hydrated antimony pentoxide (HAP) to separate Na+ in the field of radioanalytical investigations

Über die Herstellung von wasserhaltigem Antimonpentoxid zur Abtrennung von Na+ bei radioanalytischen Untersuchungen

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Summary

Hydrated antimony pentoxide with favourable chemical and mechanical properties could be produced from an aqueous suspension of antimonic acid by a two stage drying process.

A decisive factor for the pre-drying is that the compound should be given the chance to form crystalline structure, the existence of which is the primary condition for the retentive effect of HAP on Na+-ions.

The post-drying leads to a decrease of elutability of Na+-ions. This is accompanied by a reduction of the lattice constant and the water content of the products.

Zusammenfassung

Wasserhaltiges Antimonpentoxid mit ausgezeichneten chemischen und mechanischen Eigenschaften läßt sich durch einen zweistufigen Trocknungsprozeß aus einer wäßrigen Suspension von Antimon-V-säure herstellen. Entscheidend für die Vortrocknung ist, daß die Verbindung kristalline Struktur annimmt. Dies ist die erste Bedingung für den Retentionseffekt gegenüber Na-Ionen. Die Nachtrocknung führt zur Abnahme der Auswaschbarkeit dieser Ionen. Daneben erfolgt eine Herabsetzung der Gitterkonstante und des Wassergehaltes der Produkte.

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Ammann, K., Knöchel, A. Studies on the preparation of hydrated antimony pentoxide (HAP) to separate Na+ in the field of radioanalytical investigations. Mikrochim Acta 82, 385–391 (1984). https://doi.org/10.1007/BF01198684

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  • DOI: https://doi.org/10.1007/BF01198684

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