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Deactivation of red mud and modified red mud used as catalyst for the hydrodechlorination of tetrachloroethylene

Autor(es) y otros:
Ordóñez García, SalvadorAutoridad Uniovi; Sastre Andrés, HerminioAutoridad Uniovi; Díez Sanz, Fernando ValerianoAutoridad Uniovi
Palabra(s) clave:

Red Mud

Hydrodechlorination

Fecha de publicación:
1999
Editorial:

Elsevier

Versión del editor:
http://dx.doi.org/10.1016/S0167-2991(99)80501-1
Citación:
Studies in Surface Science and Catalysis, 126, p. 443–446 (1999); doi:10.1016/S0167-2991(99)80501-1
Descripción física:
p. 443-446
Resumen:

In this work, the deactivation of sulfided red mud and sulfided catalysts based on red mud was studied for the hydrodechlorination of tetrachloroethylene. Activity curves were obtained in a fixed bed reactor at 350°C, 100 bar and 0.8 Nl/min of hydrogen. Samples of fresh and used catalysts were characterised by different techniques: Morphology and surface concentration by Scanning Electron Microscopy, textural properties by nitrogen adsorption and crystallographic phases by X-ray Diffraction. Concentration of coke precursors was measured by Thermogravimetry, and acidity of fresh catalysts was evaluated by Differential Scanning Calorimetry of samples soaked in butylamine

In this work, the deactivation of sulfided red mud and sulfided catalysts based on red mud was studied for the hydrodechlorination of tetrachloroethylene. Activity curves were obtained in a fixed bed reactor at 350°C, 100 bar and 0.8 Nl/min of hydrogen. Samples of fresh and used catalysts were characterised by different techniques: Morphology and surface concentration by Scanning Electron Microscopy, textural properties by nitrogen adsorption and crystallographic phases by X-ray Diffraction. Concentration of coke precursors was measured by Thermogravimetry, and acidity of fresh catalysts was evaluated by Differential Scanning Calorimetry of samples soaked in butylamine

Descripción:

Proceedings of the 8th International Symposium

URI:
http://hdl.handle.net/10651/15109
ISSN:
0167-2991
DOI:
10.1016/S0167-2991(99)80501-1
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