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Adsorption sites neutral frameworks

The adsorption of molecules by microporous solids is discussed here within six categories, according to the nature of the adsorption sites, and without considering adsorption by metal clusters introduced within the pores. Tables 7.3-7.5 give enthalpies of adsorption for examples within these categories, which vary from the interaction of neutral frameworks with small molecules to strong adsorption on acid or basic sites. [Pg.280]

Cations prefer particular sites in the zeolite. The divalent Zn + cations prefer adsorption in a ring of framework tetrahedra with at least two A1 framework cations, so that an overall charge neutral site is generated. There is also a relationship between the size... [Pg.182]

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Adsorption sites

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