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Molecular graphics of zeolite VPI5

Molecular graphics of zeolite VPI5

A506/0010

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Credit

CLIVE FREEMAN, THE ROYAL INSTITUTION / SCIENCE PHOTO LIBRARY CLIVE FREEMAN, THE ROYAL INSTITUTION / SCIENCE PHOTO LIBRARY

Caption

Computer graphics representation of the structure of the zeolite VPI5 (Virginia Polytechnic Institute), a framework structured solid. VPI5 has large unidirectional pores that can admit large organic molecules. The framework of this substance is constructed from sub-units of aluminium phosphate. Atoms of phosphorus & aluminium are coloured yellow, with oxygen in blue. The channels & interconnecting cavities formed by the structures of zeolites present an ideal environment for shape-selective catalysis. A number of industrial processes use zeolite catalysts, notably in the cracking of petroleum.

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