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Published April 1997 | public
Journal Article

Alteration of perlite to calcium zeolites

Abstract

Hydrothermal synthesis of calcium zeolites by alteration of perlite (a rhyolitic glass) is presented. Synthetic versions of the zeolites gismondine, epistilbite and heulandite are synthesized from perlite using calcium-containing solutions, and the effects of the solution phase, pH and temperature on the distribution of the zeolitic products obtained are discussed. Transient formation of a gismondine-type zeolite during transformation of perlite to heulandite suggests a novel synthesis route for the crystallization of heulandite-type zeolites from synthetic zeolite P1.

Additional Information

© 1997 Elsevier Science B.V. Received 17 August 1996, Accepted 8 October 1996, Available online 26 March 1998. The authors thank Akzo Nobel for financial support.

Additional details

Created:
August 22, 2023
Modified:
October 17, 2023