(600­by) Preparation and Characterization of Modified Cu-ZnO-Al2O3 Catalysts for Methanol Synthesis

Preparation and characterization of modified Cu-ZnO-Al₂O₃ catalysts for methanol synthesis

Dong Ju Moon^a,b,*, Kannapu Hari Prasad Reddy^a, Su bin Lee^a, Tae Woon Kwon^a, Jae-sun Jung^a,b, Jae Suk Lee^a

Hyun Jin Kim^a,c, Byung Sung Ahn^a and Sang Woo Kim^a,b  

^aClean Energy Research Center, KIST, Seoul, South Korea

^bClean Energy & Chemical Engineering ,UST, Dae-jeon, South Korea

^cNew Business R&D Institute, DSME, Seoul, South Korea

Corresponding Author’s Email : djmoon@kist.re.kr

A series of modified Cu- ZnO-Al₂O₃ based catalysts have been synthesized by the co-precipitation method at different pH. These catalysts were evaluated for the synthesis of methanol in the temperature range 220 to 260 ^oC at 35 bar with space velocity of 3,000 h^-1 and feed molar ratios of H₂/CO=2. The catalysts have been characterized by XRD, SEM, elemental analysis, surface area and porosity measurements and TPR. It was found that the catalyst synthesized at pH 7 was most active with a CO conversion of 35.7% and a methanol selectivity of 75% and this can be used as an efficient catalyst for the methanol synthesis

Keywords : CO, H₂, Methanol, Cu-ZnO-Al₂O₃ catalysts, different pH,  MeOH