Exploiting high pressure advantages in catalytic hydrogenation of carbon dioxide to methanol
The aim of this thesis was to develop highly efficient CO2 hydrogenation process towards methanol by making use of high pressure approach. A high pressure lab scale plant was developed to conduct CO2 hydrogenation up to 400 bar. High pressure and low temperature were found to be the favourable condi...
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| Tipo de recurso: | tesis doctoral |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | CBUC, CESCA |
| Repositorio: | TDR. Tesis Doctorales en Red |
| OAI Identifier: | oai:www.tdx.cat:10803/135008 |
| Acceso en línea: | http://hdl.handle.net/10803/135008 |
| Access Level: | acceso abierto |
| Palabra clave: | heterogeneous catalysis CO2 hydrogenation Methanol synthesis High pressure Copper Zinc 54 544 546 |
| Sumario: | The aim of this thesis was to develop highly efficient CO2 hydrogenation process towards methanol by making use of high pressure approach. A high pressure lab scale plant was developed to conduct CO2 hydrogenation up to 400 bar. High pressure and low temperature were found to be the favourable conditions to excellent catalytic activity. Improved reaction performance towards methanol synthesis and reverse water-gas shift reaction was observed for the Ba and K promoted Cu/Al2O3 catalysts, respectively. Almost complete one-pass conversion of CO2 into methanol was observed under optimized process conditions over coprecipitated Cu/ZnO/Al2O3 catalysts. One-step transformation of CO2 into dimethyl ether was achieved with excellent catalytic activity. Selective formation of alkane or alkene was obtained by varying pressure of the secondary reactor coupled with methanol synthesis reactor. A high pressure, high temperature capillary cell for in-situ XAS was developed having capability for combined XAFS-Raman experiments under high pressure conditions. |
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