Zinc and Aluminium Substitutions in MFI-Structures; Synthesis, Characterisation and Catalysis
作者： W.J. Ball , S.A.I. Barrl , S. Cartlidge , B.M. Maunders , D.W. Walker
DOI: 10.1016/S0167-2991(09)60969-1
关键词:
摘要: This paper Is concerned with the location of zinc in MFI zinco-silicates. Zeolites having structure type have been synthesised as silica polymorphs and presence and/ or aluminium treated to give hydrogen forms. Non-framework species dehydrogenate n-hexane thereby reducing activation energy for cracking over zinco-silicates cf. aluminosilicates. Weak acid sites associated framework catalyse alkylation toluene methanol. However, rate xylene isomerisation is slow zincosilicates moderately high selectivities ortho- para-xylene are observed.
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