Application of catalysts to coal gasification with carbon dioxide
| Autor: | N. A. Kurbatova, T. V. Bukharkina, A. R. El’man |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
business.industry
Inorganic chemistry Mixing (process engineering) chemistry.chemical_element General Chemistry Zinc Catalysis Computer Science Applications Nickel chemistry.chemical_compound chemistry Modeling and Simulation Yield (chemistry) Carbon dioxide otorhinolaryngologic diseases Coal gasification Coal business |
| Zdroj: | Kinetics and Catalysis. 52:739-748 |
| ISSN: | 1608-3210 0023-1584 |
| DOI: | 10.1134/s0023158411050090 |
| Popis: | The effects of the additives of iron, nickel, zinc, and their oxides on the process of coal gasification with carbon dioxide at temperatures of 550–800°C was studied. It was found that the additives used did not exhibit noticeable activity upon mixing with coal. Impregnation with nickel was found most efficient; it caused a notable increase in the rate of the process and a higher degree of CO2 conversion, as compared with the thermodynamically equilibrium conversion for a given temperature. Thus, impregnation with 5% nickel made it possible to decrease the reaction temperature by 80°C with the retention of the yield of CO at about 100%. Kinetic models for describing noncatalytic and catalytic gasification reactions were considered and a mechanism of the process in the presence of nickel was proposed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|