Modified Cu–ZnO Catalysts Supported on the Mixture of ZnO and Zn–Al Oxide for Methanol Production via Hydrogenation of CO and CO2 Gas Mixture
- 주제(키워드) Methanol synthesis · Copper catalyst · Zinc-alumina oxide spinel · CO/CO 2 gas mixture · Thermal stability of catalyst
- 발행기관 한국화학공학회
- 발행년도 2024
- 총서유형 Journal
- DOI http://dx.doi.org/10.1007/s11814-024-00022-7
- KCI ID ART003080891
- 본문언어 영어
초록/요약
Cu-based catalysts were created using a two-step co-precipitation method, which can produce methanol from synthesis gases (H 2 and CO) that also contain CO 2 . The catalysts were manufactured by a two-step co-precipitation method and compared with catalysts manufactured by a one-step co-precipitation method. The supports with Zn/Al = 1 (10ZA) and Zn/Al = 2 (20ZA) showed higher ZnAl 2 O 4 ratios than the other catalysts, and the catalysts using these supports showed a similar trend to the ZnAl 2 O 4 ratio. Cu–ZnO/mixture ZnO and ZnAl 2 O 4 catalysts with more ZnAl 2 O 4 (C10Z/20ZA and C20Z/10ZA) showed lower carbon and CO conversion losses and lower sintering of Cu (200) particles at the reaction temperatures (250, 300, and 350 °C) than the Cu–ZnO-ZnAl 2 O 4 (C30ZA) catalyst. Cu–ZnO/mixture ZnO and ZnAl 2 O 4 using support with Zn/ Al = 2 (C10Z/20ZA) achieved dispersion of Cu (44.2%) and a methanol yield (409.0 g MeOH /kg cat. /h) at a reaction temperature of 250 °C, GHSV of 4,444 h −1 , and 40 bar.
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