Yoo, Chun-Jae Lee, Dae-Won Kim, Min-Sung Moon, Dong Ju Lee, Kwan-Young 2024-01-20T11:03:25Z 2024-01-20T11:03:25Z 2021-09-05 2013-11-01 1381-1169 https://pubs.kist.re.kr/handle/201004/127451 In this study, we investigated the catalysis of Cu/Ce1-xZrxO2 for the synthesis of methanol from CO/CO2/H-2 gas. The Ce1-xZrxO2 was synthesized by a surfactant (CTAB)-assisted co-precipitation method to yield high surface area supports, and Cu was deposited on the supports by a deposition-precipitation method to promote high Cu dispersion. The incorporation of Zr into the CeO2 lattice transformed the structure into a defective, pseudo-cubic one and the amount of incorporated Zr (x) determined the concentration of oxygen vacancy in the lattice. It was proposed that the oxygen vacancy in Ce1-xZrxO2 played an important role in the catalysis by determining concentration and mobility of the adsorbed COx on the catalyst. The activity was also influenced by the exposed surface area of Cu and surface acidity of the catalyst, both of which were closely related to the amount of Zr in the support. To reveal the influences of the catalyst properties on methanol production, various characterization techniques were used, such as XPS, Raman spectroscopy, XRD, H-2-TPR, NH3-TPD, BET and N2O titration methods. (c) 2013 Elsevier B.V. All rights reserved. English ELSEVIER COPPER SURFACE-AREA CARBON-DIOXIDE SOLID-SOLUTIONS REDOX BEHAVIOR OXYGEN-VACANCY REDUCED CEO2 MIXED OXIDES CO SUPPORT XPS The synthesis of methanol from CO/CO2/H-2 gas over Cu/Ce1-xZrxO2 catalysts Article 10.1016/j.molcata.2013.06.023 1 JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, v.378, pp.255 - 262 JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL 378 255 262 scie scopus 000324789600034 2-s2.0-84880896138 Chemistry, Physical Chemistry Article COPPER SURFACE-AREA CARBON-DIOXIDE SOLID-SOLUTIONS REDOX BEHAVIOR OXYGEN-VACANCY REDUCED CEO2 MIXED OXIDES CO SUPPORT XPS Methanol synthesis Synthesis gas CexZr1-xO2 Cu surface area Oxygen vacancy