Comparison of competition between T = O and T-OH groups in vanadium, niobium, tantalum BEA zeolite and SOD based zeolites - Sorbonne Université Accéder directement au contenu
Article Dans Une Revue Chemical Physics Letters Année : 2011

Comparison of competition between T = O and T-OH groups in vanadium, niobium, tantalum BEA zeolite and SOD based zeolites

Résumé

The investigation of intra framework substitution of Si by group V transition metals (V, Nb, Ta) is an important strategy to modify or to tune the catalytic properties of zeolites. Theoretically one of the limitations is the size of the zeolite unit cell. In this study the energy and geometry of silicate BEA modified with group V metals is investigated and compared with the results obtained for smaller zeolite models, in particular the SOD structure. The group V substituted T framework sites in BEA zeolite structure with T = O and/or T-OH groups are confirmed: i.e. T = O for T = vanadium, and T-OH for T = niobium or tantalum.

Domaines

Catalyse

Dates et versions

hal-00666258 , version 1 (03-02-2012)

Identifiants

Citer

Anna Wojtszek, Maria Zioleck, Stanislaw Dzwigaj, Frederik Tielens. Comparison of competition between T = O and T-OH groups in vanadium, niobium, tantalum BEA zeolite and SOD based zeolites. Chemical Physics Letters, 2011, 514, pp.70-73. ⟨10.1016/j.cplett.2011.08.005⟩. ⟨hal-00666258⟩
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