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Catalytic Hydrogenation of $CO_{2}$ to Methanol over Cu/MgO Catalysts in a Semi-Continuous Reactor
| Content Provider | MDPI |
|---|---|
| Author | Kleiber, Sascha Pallua, Moritz Siebenhofer, Matthäus Lux, Susanne |
| Copyright Year | 2021 |
| Description | Methanol synthesis from carbon dioxide $(CO_{2}$) may contribute to carbon capture and utilization, energy fluctuation control and the availability of $CO_{2}$-neutral fuels. However, methanol synthesis is challenging due to the stringent thermodynamics. Several catalysts mainly based on the carrier material $Al_{2}O_{3}$ have been investigated. Few results on MgO as carrier material have been published. The focus of this study is the carrier material MgO. The caustic properties of MgO depend on the caustification/sintering temperature. This paper presents the first results of the activity of a Cu/MgO catalyst for the low calcining temperature of 823 K. For the chosen calcining conditions, MgO is highly active with respect to its $CO_{2}$ adsorption capacity. The Cu/MgO catalyst showed good catalytic activity in $CO_{2}$ hydrogenation with a high selectivity for methanol. In repeated cycles of reactant consumption and product condensation followed by reactant re-dosing, an overall relative conversion of $CO_{2}$ of 76% and an overall selectivity for methanol of 59% was obtained. The maximum selectivity for methanol in a single cycle was 88%. |
| Starting Page | 4319 |
| e-ISSN | 19961073 |
| DOI | 10.3390/en14144319 |
| Journal | Energies |
| Issue Number | 14 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-07-17 |
| Access Restriction | Open |
| Subject Keyword | Energies Environmental Engineering Co2 Hydrogenation Methanol Caustic Mgo Bifunctional Catalyst |
| Content Type | Text |
| Resource Type | Article |
