Gas-Phase Hydrodechlorination of Dichloromethane at Low Concentrations with Palladium/Carbon Catalysts
| Autor: | Eloisa Gonzalez-Serrano, Juan J. Rodriguez, Zahara M. de Pedro, L.M. Gómez-Sainero |
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| Rok vydání: | 2006 |
| Předmět: |
General Chemical Engineering
Inorganic chemistry chemistry.chemical_element General Chemistry Industrial and Manufacturing Engineering Product distribution Catalysis chemistry.chemical_compound chemistry Organic chemistry Microreactor Selectivity Dispersion (chemistry) Carbon Dichloromethane Palladium |
| Zdroj: | Industrial & Engineering Chemistry Research. 45:7760-7766 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/ie060621m |
| Popis: | The behavior of a commercial (CE) and homemade (CH) palladium/carbon catalyst in the gas-phase hydrodechlorination of dichloromethane (DCM) has been investigated, at low concentration, in a fixed-bed microreactor, with a view of application to the treatment of residual gas streams. The influence of space time (1.0−6.6 kg h mol-1), reaction temperature (423−623 K), and H2/DCM molar ratio (50−400) was investigated. The catalysts showed high performance, with DCM conversions up to 97% and selectivities to nonchlorinated products of ∼80%. Modification of the operating conditions highly affects the activity of the catalyst while also showing scarce influence on the selectivity. At equal palladium loadings, the CH catalyst showed higher activity than the CE catalyst; however, the product distribution was fairly similar. This was attributed to a different dispersion and distribution of palladium particles, but a similarity in the nature of the palladium species involved in both types of catalysts. |
| Databáze: | OpenAIRE |
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