Correlations for catalyst deactivation during valorization of biomass-derived acetone and butanol
| Autor: | Parimal A. Parikh |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
General Chemical Engineering
Butanol Inorganic chemistry Kinetics Biomass 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry Industrial and Manufacturing Engineering 0104 chemical sciences Catalysis chemistry.chemical_compound Reaction rate constant chemistry Materials Chemistry Acetone 0210 nano-technology Moving bed |
| Zdroj: | Chemical Papers. 75:1919-1923 |
| ISSN: | 1336-9075 2585-7290 |
| DOI: | 10.1007/s11696-020-01475-w |
| Popis: | Recently we reported valorization of biomass-derived acetone and butanol in which acetone hydrogenation and butylation exhibited systematic trends for catalyst life as a function of total reaction pressure. These works did not address kinetics of catalyst deactivation behaviour. The present, relatively short, communication attempts to determine rate constants for main and deactivation reactions are calculated for different pressures. Variation of rate constants with pressure has scantily been reported unlike with temperature. Values of both constants decreased with increasing pressure; however, main reaction rate constant declined slowly resulting in much higher values of their ratios. This particular aspect led to higher conversions at higher pressures which were simultaneously accompanied by reduced coking. Knowledge of rates of catalyst deactivation helps select reactor configuration, i.e., fixed and fluidised beds or moving bed reactors. Thus this study assists selection of reactor, catalysts, and operating conditions to impart value addition to biomass-derived chemicals. A parameter accounting for pressure effect on rate constants too has been determined. The same parameter for deactivation reaction has been correlated with ratio of rate constants for main and deactivation reactions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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