Resistance to sulfur and oxygenated compounds of supported Pd, Pt, Rh, Ru catalysts
- Badano, Juan Manuel
- Quiroga, Monica Esther
- Betti, Carolina Paola
- Vera, Carlos Roman
- Canavese, Sergio Alberto
- Coloma Pascual, F.
DOIAbstract
The poisoning resistance to sulfided and oxygenated compounds of some VIII Group PYGAS selective hydrogenation catalysts based on metals was assessed. Low content alumina supported Rh, Pd, Ru and Pt catalysts (0.35 wt%) were prepared from chlorided precursors. In the case of the palladium catalysts a nitrogenated precursor was also used. The catalysts were mainly assessed in the catalytic test of selective styrene hydrogenation in the presence or absence of known poisons. Model feedstocks spiked with thiophene, thiophane and tetrahydrofuran were used. The catalysts were further characterized by means of chemical analysis, XPS, TPR and chemisorption. The results indicate that chlorided precursors yield more sulfur resistant catalysts. The ef...
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