Lee, JS Han, SH Kim, HG Lee, KH Kim, YG 2024-01-21T14:08:15Z 2024-01-21T14:08:15Z 2021-09-01 2000-05 0256-1115 https://pubs.kist.re.kr/handle/201004/141440 The space velocity had profound and complicated effects on methanol synthesis from CO2/CO/H-2 over Cu/ZnO/Al2O3 at 523 K and 3.0 MPa. At high space velocities, methanol yields as well as the rate of methanol production increased continuously with increasing CO2 concentration in the feed. Below a certain space velocity, methanol yields and reaction rates showed a maximum at CO2 concentration of 5-10%. Different coverages of surface reaction intermediates on copper appeared to be responsible for this phenomenon. The space velocity that gave the maximal rate of methanol production also depended on the feed composition. Higher space velocity yielded higher rates for CO2/H-2 and the opposite effect was observed for the CO/H-2 feed. For CO2/CO/H-2 feed, an optimal space velocity existed for obtaining the maximal rate. English KOREAN INST CHEM ENGINEERS COPPER-CATALYSTS MECHANISM OXYGEN CO2 Effects of space velocity on methanol synthesis from CO2/CO/H-2 over Cu/ZnO/Al2O3 catalyst Article 10.1007/BF02699049 1 KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.17, no.3, pp.332 - 336 KOREAN JOURNAL OF CHEMICAL ENGINEERING 17 3 332 336 scie scopus 000087549200014 2-s2.0-0141578951 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article COPPER-CATALYSTS MECHANISM OXYGEN CO2 methanol synthesis Cu/ZnO/Al2O3 catalyst space velocity surface coverage N2O titration