influência da temperatura na síntese hidrotérmica da zeólita y obtida por microondas influence of temperature on the hydrothermal synthesis of zeolite y obtained by microwave
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2012
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Abstract
Nos últimos anos o aquecimento e a condução de reações químicas por energia de microondas tem sido um tema cada vez mais popular na comunidade científica, e assim nos campos da zeólita. Desta forma, o presente trabalho visa estudar o efeito da temperatura na obtenção da zeólita Y sintetizada por microondas. A temperatura de síntese foi variada de 100 ºC a 90 ºC. As amostras foram caracterizadas por difração de raios X, microscopia eletrônica de varredura e adsorção de nitrogênio. Os resultados comprovaram a forte influência da temperatura em todas as características finais das amostras sintetizadas, sendo a zeólita Y obtida a 90 ºC por microondas. A temperatura de 100 ºC foi a ideal para a obtenção da zeólita com boa cristalinidade.
In recent years, heating and driving chemical reactions by microwave energy has been an increasingly popular topic in the scientific community, and so in the field of zeolite. Thus, this paper aims to study the effect of temperature on the achievement of zeolite Y synthesized by microwave. The synthesis temperature was varied from 100 ºC to 90 ºC. The samples were characterized by X-ray diffraction, scanning electron microscopy and nitrogen adsorption. The results show the strong influence of temperature on all the final characteristics of the samples. As the Y zeolite obtained at 90 ºC by microwave, but 100 ºC was optimal temperature for obtaining the zeolite with good crystallinity.
In recent years, heating and driving chemical reactions by microwave energy has been an increasingly popular topic in the scientific community, and so in the field of zeolite. Thus, this paper aims to study the effect of temperature on the achievement of zeolite Y synthesized by microwave. The synthesis temperature was varied from 100 ºC to 90 ºC. The samples were characterized by X-ray diffraction, scanning electron microscopy and nitrogen adsorption. The results show the strong influence of temperature on all the final characteristics of the samples. As the Y zeolite obtained at 90 ºC by microwave, but 100 ºC was optimal temperature for obtaining the zeolite with good crystallinity.
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| Authors | ;A. N. Simões;L. S. Neiva;V. N. Simões;M. G. Rodrigues;L. Gama |
| Journal | Zootaxa |
| Year | 2012 |
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