Enhanced methanol production by two-stage reaction of CO2 hydrogenation at atmospheric pressure
Journal
Catalysis Communications
Journal Volume
162
Date Issued
2022
Author(s)
Abstract
Methanol can be produced from CO2 hydrogenation. CO2 was hydrogenated to CH3OH in one-stage reaction at atmospheric pressure. The result was highly selective to CH3OH but insufficient conversion of CO2 using Cu/Zn/Al2O3. A two-stage reaction was carried out with high and low temperatures, respectively. CO2 was hydrogenated to carbon monoxide (CO) and H2O in the first-stage at high temperatures. Subsequently, after removing H2O, CO was further hydrogenated to CH3OH in the second-stage at low temperatures. The CH3OH yield was 3.4 times higher than that of single-stage reaction. This concept achieves CO2 hydrogenation towards more CH3OH production. ? 2021 The Authors
Subjects
Carbon dioxide
Carbon monoxide
Hydrogenation
Methanol
Two-stage reaction
Aluminum compounds
Atmospheric pressure
Copper compounds
Highest temperature
Lows-temperatures
Methanol production
OH production
Single stage
Two-stage reactions
Type
journal article