CO₂ Hydrogenation with Cu/ZnO/Al₂O₃: A Benchmark Study

Abstract

The suitability of a commercial and industrially applied Cu‐based catalyst for the synthesis of methanol by CO2 hydrogenation was investigated. Unexpectedly, this system showed high stability and well‐performance under conditions that may be relevant for chemical energy conversion using hydrogen and energy from renewable technologies. This Cu‐based catalyst demonstrated excellent suitability for dynamical process operation that may be essential for effective compensation of the volatility of renewable energy sources.

Enhanced Direct Dimethyl Ether Synthesis from CO2-Rich Syngas with Cu/ZnO/ZrO2 Catalysts Prepared by Continuous Co-Precipitation

“…• C and 50 bar, the productivities are generally higher for the CO 2 -rich feed composition compared to the CO-rich composition (Table 4), which agrees with results reported in the literature [70][71][72][73][74]. In preliminary experiments, we observed a decrease in productivity using CO 2 -rich feed at reaction temperatures ≥250 • C. In this context, we refer to Ruland et al [70], who studied CO 2 hydrogenation using a commercial CZA catalyst and reported a decrease in the conversion of CO 2 -rich syngas with increasing temperature. A detailed kinetic investigation goes beyond the scope of this work and is focus of an upcoming study.…”

Surface reaction kinetics of the methanol synthesis and the water gas shift reaction on Cu/ZnO/Al2O3

“…This effect is shown in both our own experiments and experiments from literature. 51 Still, the model adequately simulates this region (low temperature and high ȳ CO 2 ,0 ) for lower values of GHSV is lower (which means higher conversion). This is demonstrated in the simulation of the experiments from Slotboom et al 16 which have no CO in feed (ȳ CO 2 ,0 = 1) and are reasonably reproduced.…”

Influence of Contaminants in Steel Mill Exhaust Gases on Cu/ZnO/Al2O3 Catalysts Applied in Methanol Synthesis

“…The corresponding flow charts and the further experimental procedure for the investigations on the impact of impurities on the industrial Cu/ZnO/Al 2 O 3 catalyst are described in detail in the Supporting Information (SI). Further information on the catalyst used in this study can be found in a previous publication [28]. To ensure the comparability of the results obtained with different setups applied in the Carbon2Chem project, a standardized benchmark test was performed.…”