{HEAD ~ A method} for enhancing the catalytic activity of a porous inorganic crystalline composition comprising 98 mole percent or more SiO2 and 2 mole percent or {TAIL ~ less oxides} of at least one initial lattice metal selected from those of Groups IIIB, IVB, VB, VIB, VIIB, VIII, IIIA, IVA and VA of the Periodic Table of the Elements and having an anhydrous anionic framework molar composition expressed by the formula 
{ HEAD ~ A method } for enhancing the catalytic activity of a porous inorganic crystalline composition comprising 98 mole percent or more SiO2 and 2 mole percent or { TAIL ~ less oxides } of at least one initial lattice metal selected from those of Groups IIIB , IVB , VB , VIB , VIIB , VIII , IIIA , IVA and VA of the Periodic Table of the Elements and having an anhydrous anionic framework molar composition expressed by the formula
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