ChemInform Abstract: Nature of the Active Sites and Catalytic Activity of SAPO-5 Synthesized in the Presence of Nickel Cations

Autor:	S. A. Zubkov, V. Kanazirev, N. Micheva, Chr. Minchev, V. Valtchev, V. Minkov
Rok vydání:	2010
Předmět:	Nickel chemistry law Acid catalyzed Polymer chemistry chemistry.chemical_element Infrared spectroscopy Nickel ions General Medicine Diffuse reflection Crystallization law.invention Catalysis
Zdroj:	ChemInform. 26
ISSN:	0931-7597
DOI:	10.1002/chin.199510017
Popis:	Ni-modified SAPO-5 (Ni/SAPO-5) has been synthesized via admixing nickel ions in the gel for crystallization of SAPO-5. These materials possess a higher catalytic activity in acid catalyzed reactions than does SAPO-5. The diffuse reflection IR spectra do not indicate significant changes in the acidic OH groups ofNi-containing samples compared to those of pure SAPO-5. Thus the enhanced catalytic activity of Ni/SAPO-5 can be attributed mostly to finely dispersed extra framework nickel species which could modify the environment of the Bronsted centers in the SAPO-5 or act cooperatively with the protons in the catalytic conversion of aromatic hydrocarbons.
Databáze:	OpenAIRE
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