Heterogeneously Catalyzed Hydrogenation of Supercritical CO2 to Methanol. Issue 10 (12th September 2017)

• Record Type: Journal Article
• Authors: Kommoß, Björn; Klemenz, Sebastian; Schmitt, Fabian; Hocke, Elisabeth; Vogel, Kevin; Drochner, Alfons; Albert, Barbara; Etzold, Bastian; Vogel, Herbert G.
• Is Part Of: Chemical engineering & technology. Volume 40:Issue 10(2017)
• Page Start: 1907
• Page End: 1915
• Publication Date: 2017-09-12
• Subjects: Aspen Plus -- CO2 hydrogenation -- Energy storage technologies -- Heterogeneous catalysis -- Methanol synthesis; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.201600400
• Languages: English
• ISSNs: 0930-7516

Abstract

Abstract: Interest in energy storage technologies is still increasing in times of excess of electricity generated by wind farms or solar plants. A key part of the energy storage technologies plays the efficient conversion of H2 and CO2 from renewable resources. Here, the process conditions for continuous catalytic hydrogenation of CO2 to CH3 OH under supercritical conditions over lab‐synthesized Cu/ZnO/Al2 O3 catalysts were investigated. A possible in situ phase separation of reaction products within the reactor due to the higher densities of the reaction mixture by the higher pressure could affect the kinetics and simplify downstream processing. The combination of thermodynamic studies and catalytic performance tests for CO2 hydrogenation under supercritical conditions is discussed and a process concept is presented. Abstract : Efficient conversion of H2 and CO2 from renewable resources plays a crucial role in energy storage technologies. Process conditions for continuously catalytic hydrogenation of CO2 to CH3 OH under supercritical conditions over self‐made Cu/ZnO/Al2 O3 catalysts were investigated. Higher H2 concentrations, respectively higher H2 /CO2 ratios, lead to an increased selectivity of CH3 OH.