Poisoning of Pd-carbon catalysts by sulphur, chloro and heavy metal compounds in liquid phase hydrogenation ofo-nitrophenol too-aminophenol
| Autor: | Vasant R. Choudhary, Mukund G. Sane |
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| Rok vydání: | 1998 |
| Předmět: |
Renewable Energy
Sustainability and the Environment General Chemical Engineering Organic Chemistry Inorganic chemistry chemistry.chemical_element Heterogeneous catalysis Pollution Chloride Catalyst poisoning Catalysis Inorganic Chemistry Dichloroethane chemistry.chemical_compound Nitrophenol Fuel Technology chemistry medicine Thiophene Waste Management and Disposal Biotechnology medicine.drug Palladium |
| Zdroj: | Journal of Chemical Technology & Biotechnology. 73:336-340 |
| ISSN: | 1097-4660 0268-2575 |
| DOI: | 10.1002/(sici)1097-4660(199812)73:4<336::aid-jctb963>3.0.co;2-w |
| Popis: | The poisoning of Pd–carbon (4·1% Pd) catalysts by thiophene, dichloroethane, mercuric chloride and lead, zinc and mercuric acetates at different concentrations (0–5000 g m−3) in the liquid phase hydrogenation of o-nitrophenol to o-aminophenol (at 308 K and H2 pressure of 1508 kPa) in a three-phase stirred slurry reactor has been investigated. The hydrogenation activity of the catalyst is drastically reduced due to the presence of these poisons in the reaction mixture, even at a very low concentration of poison (20 g m−3). Among the poisons, mercuric acetate was found to be the most potent. © 1998 Society of Chemical Industry |
| Databáze: | OpenAIRE |
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