Anomalous microwave melting of zeolites

Sridhar Komarneni; Rustum Roy

doi:10.1016/0167-577X(86)90060-1

Anomalous microwave melting of zeolites

Sridhar Komarneni, Rustum Roy

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Abstract

Microwave absorption in transparent ceramics or minerals containing no transition metals may be due to losses caused by ionic "rattling" in a rigid cage. Evidence for this appears in the fact that some zeolites can be melted in a matter of seconds in a standard kitchen-type microwave oven with a frequency of 2.45 GHz. This dielectric heating behavior is controlled in part by the topology of the anionic framework, location and nature of the exchange ions within the framework. Faujasite (Linde 13X) and Linde type A saturated with Na⁺ are the strongest absorbers. This rapid heating behavior of zeolites by microwaves opens up a new method for the processing of these important materials, and of ceramic bodies containing them in general.

Original language	English (US)
Pages (from-to)	107-110
Number of pages	4
Journal	Materials Letters
Volume	4
Issue number	2
DOIs	https://doi.org/10.1016/0167-577X(86)90060-1
State	Published - Jan 1 1986

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/0167-577X(86)90060-1

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AB - Microwave absorption in transparent ceramics or minerals containing no transition metals may be due to losses caused by ionic "rattling" in a rigid cage. Evidence for this appears in the fact that some zeolites can be melted in a matter of seconds in a standard kitchen-type microwave oven with a frequency of 2.45 GHz. This dielectric heating behavior is controlled in part by the topology of the anionic framework, location and nature of the exchange ions within the framework. Faujasite (Linde 13X) and Linde type A saturated with Na+ are the strongest absorbers. This rapid heating behavior of zeolites by microwaves opens up a new method for the processing of these important materials, and of ceramic bodies containing them in general.

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Anomalous microwave melting of zeolites

Abstract

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