Answered: What are the three types of shape…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter9: Liquids, Solids, And Materials

Section: Chapter Questions

Problem 89QRT

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What are the three types of shape selectivity displayed by zeolites? Explain each of them and these materials.

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Zeolites are microporous, three-dimensional crystalline solids of aluminum silicate. Thus, zeolites are structures of crystalline solids that are composed of silicon, oxygen, and aluminum. These structures form a framework with cavities and channels in which cations, water, and certain relatively small molecules can reside.
Zeolites have small holes of a fixed size in them that allow small molecules to pass through them easily, but larger molecules cannot pass through them; hence they are sometimes called molecular sieves.

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