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https://repositorio.ufba.br/handle/ri/4842
metadata.dc.type: | Artigo de Periódico |
Título : | Ação promotora do zinco em catalisadores de síntese do estireno |
Otros títulos : | Química Nova |
Autor : | Leite, Hugo Ernane Bonfim Oliveira, Alcineia Conceição Varela, Maria do Carmo Rangel Santos |
metadata.dc.creator: | Leite, Hugo Ernane Bonfim Oliveira, Alcineia Conceição Varela, Maria do Carmo Rangel Santos |
Resumen : | Ethylbenzene dehydrogenation in the presence of steam is the main commercial route to produce styrene. The industrial catalyst is chromium and potassium-doped hematite, which easily deactivates with time due to potassium loss. In order to find non-toxic and potassium free catalysts, the promoter action of zinc on hematite was studied in this work. It was found that zinc acts as structural promoter by stabilizing the Fe3+ species (active phase) as maghemite. Although it decreases the specific surface area, it increases four times the catalytic activity as compared to hematite. |
Palabras clave : | Hematite Styrene Ethylbenzene dehydrogenation |
URI : | http://www.repositorio.ufba.br/ri/handle/ri/4842 |
Fecha de publicación : | 2004 |
Aparece en las colecciones: | Artigo Publicado em Periódico (Química) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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19270.pdf | 220,56 kB | Adobe PDF | Visualizar/Abrir |
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