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On the Nature of Water Bound to a Solid Acid Catalyst

Smith, L. ; Cheetham, A. K. ; Morris, R. E. ; Marchese, L. ; Thomas, J. M. ; Wright, P. A. ; Chen, J.

Science (American Association for the Advancement of Science), 1996-02, Vol.271 (5250), p.799-802 [Periódico revisado por pares]

Washington, DC: American Society for the Advancement of Science

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Título:
On the Nature of Water Bound to a Solid Acid Catalyst
Autor: Smith, L. ; Cheetham, A. K. ; Morris, R. E. ; Marchese, L. ; Thomas, J. M. ; Wright, P. A. ; Chen, J.
Assuntos: Acids ; Atoms ; Catalysis ; Catalysts ; Catalysts: preparations and properties ; Chemistry ; Deuterons ; Exact sciences and technology ; General and physical chemistry ; Hydronium ions ; Infrared radiation ; Infrared spectrum ; Materials science ; Molecules ; Neutron diffraction ; Neutrons ; Oxygen ; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry ; Water ; Zeolites
É parte de: Science (American Association for the Advancement of Science), 1996-02, Vol.271 (5250), p.799-802
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: The nature of the species formed when water interacts with Brønsted acid sites in a microporous solid acid catalyst, HSAPO-34, was studied by powder neutron diffraction and infrared spectroscopy. Previous infrared and computational studies had failed to unambiguously establish whether water is protonated to form hydronium (H$_3$O$^+$) ions or is merely hydrogen-bonded to acid sites inside the zeolite. Our experiments clearly showed that both species are present: An H$_3$O$^+$ ion is found in the eight-ring channel of the zeolite and a second water molecule is hydrogen-bonded to an acid site on the six-ring.
Editor: Washington, DC: American Society for the Advancement of Science
Idioma: Inglês

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On the Nature of Water Bound to a Solid Acid Catalyst

Smith, L. ; Cheetham, A. K. ; Morris, R. E. ; Marchese, L. ; Thomas, J. M. ; Wright, P. A. ; Chen, J.

Washington, DC: American Society for the Advancement of Science

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