水煤气变换反应
制氢
甲烷化
催化作用
电力转天然气
碳纤维
可再生能源
合成气
甲烷
氢
碳捕获和储存(时间表)
环境科学
化学工程
化学
材料科学
有机化学
生态学
气候变化
生物
电解
电极
物理化学
复合数
电气工程
电解质
复合材料
工程类
作者
Sebastian T. Wismann,Kasper‐Emil Larsen,Peter Mortensen
标识
DOI:10.1002/anie.202109696
摘要
Utilization of CO2 is a requirement for a sustainable production of carbon-based chemicals. The reverse water-gas-shift (RWGS) can valorize CO2 by reaction with hydrogen to produce a synthesis gas compatible with existing industrial infrastructure. Fully electrified reverse water-gas-shift (eRWGS™) was achieved using integrated ohmic heating and a nickel-type catalyst at industrially relevant conditions. Using a feed of H2 : CO2 in a ratio of 2.25 at 10 barg, utilizing high temperature operation at 1050 °C allowed for production of a synthesis gas with a H2 /CO ratio of 2.0 and no detectable methane, ideal for production of sustainable fuel by e.g. the Fischer-Tropsch synthesis. Facilitating RWGS through CH4 as intermediate was found superior to the selective RWGS route, due to higher activity and suppression of carbon formation. The eRWGS™ catalyst is found to provide a preferential emissions-free route for production of synthesis gas for any relevant H2 /CO ratio, enabling production of sustainable carbon-based chemicals from CO2 and renewable electricity with high hydrogen and carbon efficiency.
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