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Titolo:
The influence of the synthesis temperature on cobalt phthalocyanine encapsulation in zeolite Y
Autore:
Zanjanchi, MA; Tabatabaeian, K; Moosavifar, M;
Indirizzi:
Univ Guilan, Dept Chem, Fac Sci, Rasht, Iran Univ Guilan Rasht IranUniv Guilan, Dept Chem, Fac Sci, Rasht, Iran
Titolo Testata:
JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY
fascicolo: 3, volume: 40, anno: 2001,
pagine: 193 - 198
SICI:
1388-3127(200107)40:3<193:TIOTST>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
IRON PHTHALOCYANINE; FAUJASITE; OXIDATION; COMPLEXES; CHEMISTRY; COPPER; PERFLUOROPHTHALOCYANINES; METALLOPHTHALOCYANINES; CYCLOHEXANE; CATALYSTS;
Keywords:
cobalt phthalocyanine; diffuse reflectance spectroscopy; encapsulation; molecular sieves; zeolite Y;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Zanjanchi, MA Univ Guilan, Dept Chem, Fac Sci, POB 1914, Rasht, Iran Univ Guilan POB 1914 Rasht Iran Sci, POB 1914, Rasht, Iran
Citazione:
M.A. Zanjanchi et al., "The influence of the synthesis temperature on cobalt phthalocyanine encapsulation in zeolite Y", J INCL P MA, 40(3), 2001, pp. 193-198

Abstract

Several characterization techniques were applied to study the effect of the synthesis temperature on the physicochemical properties of cobalt phthalocyanine incoporated into zeolite Y. The cobalt phthalocyanine was synthesized in the supercages of zeolite Y by the template synthesis method at two different temperatures of 200 and 300 degreesC and characterized by diffuse reflectance spectroscopy, Fourier transform infrared spectroscopy, pore volume analysis, unit cell dimension calculation, UV-vis spectroscopy, thermogravimetric analysis and X-ray diffraction. The results show that the catalyst synthesized at 200 degreesC contains 11 wt.% cobalt phthalocyanine and almost all of this complex is encapsulated in the supercages as monomeric species. At higher temperature a considerable amount of the cobalt phthalocyanine is hosted in the mesopores and/or on the external surface of the zeolite as aggregates. The migration of one part of the cobalt cations from the supercages to the small cages at 300 degreesC decreases the formation of the non-aggregated encapsulated phthalocyanine molecules in the zeolite supercages. The aggregated cobalt phthalocyanine formed at the surface corresponds to the beta -polymorph state of the phthalocyanine.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 02:15:58