Classes of Reactions involving Solids

To exemplify the widespread significance of defects in the chemistry of the solid state we may list the types of reaction which have, on the basis of experiment, been shown to require the existence of defect structures for them to proceed (34). These reactions are  

A phenomenon closely related to photosensitization is that of photoactivated adsorption, in which non-stoicheiometric soUds show enhanced adsorption of molecules from solution during illumination. The 

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