Amount and nature of sulfates at the surface of sulfate-doped zirconia catalysts

Autor:	Claudio Morterra, C. Sarzanini, Francesco Pinna, Giuseppina Cerrato, G. Sacchero, Michela Signoretto
Rok vydání:	1995
Předmět:	chemistry.chemical_compound Sulfation chemistry Inorganic chemistry Materials Chemistry Cubic zirconia General Chemistry Thermal treatment Superacid Sulfate Fourier transform infrared spectroscopy High-resolution transmission electron microscopy Catalysis
Zdroj:	Journal of Materials Chemistry. 5:353
ISSN:	1364-5501 0959-9428
DOI:	10.1039/jm9950500353
Popis:	Two families of sulfate-doped zirconia catalysts (sd-ZrO2) have been investigated by dosing the surface sulfates, and characterizing the solids by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM) and Fourier-transform infrared (FTIR) spectroscopy. The most suitable analysis method is discussed. The spectral features of surface sulfates, responsible for the superacid catalytic properties of sd-ZrO2, have been related to preparative parameters such as the sulfation procedure, the sulfate content, the crystal phase of the support, the thermal treatment of the solid after sulfation and the vacuum activation temperature of the catalyst.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8b5ea102e213655c25e7fb68feae8008 https://doi.org/10.1039/jm9950500353 Zobrazit plný text záznamu