Jung, Heon Yang, Dae Ryook Jung, Kwang-Deog 2024-01-20T05:32:19Z 2024-01-20T05:32:19Z 2021-09-03 2015-12 0253-2964 https://pubs.kist.re.kr/handle/201004/124692 Cu/ZnO/Al2O3/ZrO2 (CZAZr) catalysts were prepared by a coprecipitation method. CO2 was introduced into aging solution to get CZAZr precusors with malachite phase. The x value in CZAZr(x) is the metallic ratio of the Zr component at a fixed metallic ratio of Cu:Zn:Al of 6:3:1. TOFMeOH of CZAZr(0) was 0.56 mu mol/m(2)Cu/s at 250 degrees C, 50 atm and a gas hourly space velocity (GHSV) of 12 000 mL/g(cat)/h. TOFMeOHs of CZAZr(1), CZAZr (2), CZAZr(3), and CZAZr(4) were 0.64, 0.90, 0.99, and 1.08 mu mol/m(2)Cu/s at the same reaction condition, respectively. TOF(MeOH)s of CZAZr catalysts increased with increasing ZrO2 content, indicating that high TOFMeOH of CZAZr catalysts came from ZrO2 as compared with CZAZr(0) catalysts. These kinetic data on CZAZr catalysts in the practical reaction condition proved the suggestion from previous infrared (IR) study on Cu/Zr catalysts. ZrO2 afforded the adsorption sites for CO and CO2 insertion into Zr-OH and Cu supplied active hydrogen to ZrO2 for hydrogenating formate and hydroxycarbonate to methanol on ZrO2 in addition to methanol synthesis on Cu/ZnO/Al2O3. English WILEY-V C H VERLAG GMBH COPPER CATALYST METAL-OXIDES HYDROGENATION PRECURSOR MALACHITE GAS ZNO CO Role of ZrO2 on Cu/ZnO/Al2O3/ZrO2 in Methanol Synthesis Article 10.1002/bkcs.10587 1 BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.36, no.12, pp.2875 - 2880 BULLETIN OF THE KOREAN CHEMICAL SOCIETY 36 12 2875 2880 scie scopus kci ART002055923 000368125200018 2-s2.0-84954385644 Chemistry, Multidisciplinary Chemistry Article COPPER CATALYST METAL-OXIDES HYDROGENATION PRECURSOR MALACHITE GAS ZNO CO Methanol synthesis Structure sensitivity Cu/ZnO/Al2O3/ZrO2 catalyst Hydrogen spillover