Water–Gas Shift Reaction over Ni/CeO2 Catalysts
| Autor: | Natalia Mezentseva, Eugene Ivanov, Mikhail N. Simonov, D.V. Andreev, Vladislav A. Sadykov, L.L. Makarshin, Ludmilla Bobrova, Alexander Gribovskii |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Cerium oxide
Analytical chemistry 02 engineering and technology 010402 general chemistry lcsh:Chemical technology 01 natural sciences Catalysis Water-gas shift reaction Methane lcsh:Chemistry chemistry.chemical_compound fraction microchannel lcsh:TP1-1185 Partial oxidation Physical and Theoretical Chemistry nickel–ceria catalyst Microchannel Chemistry Atmospheric temperature range 021001 nanoscience & nanotechnology 0104 chemical sciences lcsh:QD1-999 water–gas shift Microreactor 0210 nano-technology |
| Zdroj: | Catalysts, Vol 7, Iss 10, p 310 (2017) Catalysts; Volume 7; Issue 10; Pages: 310 |
| ISSN: | 2073-4344 |
| Popis: | This paper reports the results of a study of a water–gas shift reaction over nickel–ceria catalysts with different metal loading. Within this study, the overall CO conversion and observed kinetic behavior were investigated over the temperature range of 250–550 °C in different reactor configurations (fixed-bed and microchannel reactors). The quasi-steady state kinetics of the CO water–gas shift reaction was studied for fractions of Ni-containing cerium oxide catalysts in fixed-bed experiments at lab-scale level using a very dilute gas (1% CO + 1.8% H2O in Не). A set of experiments with a microchannel reactor was performed using the feed composition (CO:H2O:H2:N2 = 1:2:2:2), representing a product gas from methane partial oxidation. The results were interpreted using computational models. The kinetic parameters were determined by regression analysis, while mechanistic aspects were considered only briefly. Simulation of the WGS reaction in the microreactor was also carried out by using the COMSOL Multiphysics program. |
| Databáze: | OpenAIRE |
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