Abatement of CO from relatively simple and complex mixtures
| Autor: | Alexander J Dyakonov |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
inorganic chemicals
Smoke Catalyst support organic chemicals Process Chemistry and Technology Inorganic chemistry medicine.disease Catalysis Amorphous solid chemistry.chemical_compound Adsorption Transition metal chemistry Catalytic oxidation Chemisorption medicine heterocyclic compounds Dehydration Zeolite General Environmental Science Carbon monoxide Catalyst degradation |
| Zdroj: | Applied Catalysis B: Environmental. 45:257-267 |
| ISSN: | 0926-3373 |
| DOI: | 10.1016/s0926-3373(03)00167-x |
| Popis: | A low-temperature abatement of carbon monoxide from mixtures as complicated as smoke was considered. Catalytic oxidation and chemisorption of CO on activated carbon-supported Pd and Cu catalysts were investigated. Heterogenized Wacker-type catalysts and the product of catalyst degradation, a dispersed Pd-Cu catalyst, were prepared and found to be promising for the smoke applications. Deactivation of the catalyst was found to be caused by the catalyst dehydration process, which appeared to be reversible. A heat treatment in a CO+O 2 reaction gas flow resulted in the conversion of a Wacker-type transition metal complex catalyst to Pd 0 atoms or small clusters. This new system composed a very active chemisorbent of CO and a relatively stable oxidation catalyst at elevated temperatures. This immediately prepared catalyst showed 70% removal of CO from smoke. The elements of the mechanisms of CO oxidation were studied under the gas-flow and gas-pulse conditions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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