Abstract Water gas shift reaction of syngas and subsequent H2/CO2 separation are key operations for large-scale H2 production from fossil fuels and agricultural and forestry biomass with CO2 capture. In this study, a tubular zeolite membrane reactor has been demonstrated for the first achievement of nearly complete CO conversion and total H2 recovery with simultaneous production of a high pressure pure CO2 stream for water gas shift reaction at high temperature and high pressure. When operated at 500 °C and 20 bar, the membrane reactor attained CO conversion > 99.9% and H2 recovery > 99.9% with a high pressure pure CO2 retentate under practically meaningful gas hourly space velocity of 15,000 h−1 and steam-to-CO ratio of 3.5. The zeolite membrane reactor with proven long-term stability is promising for further development and practical considerations.

中文翻译：

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在高温高压沸石膜反应器中实现水煤气变换反应的完全 CO 转化和总 H 2 回收

摘要 合成气的水煤气变换反应和随后的 H2/CO2 分离是利用 CO2 捕获的化石燃料和农林生物质大规模生产 H2 的关键操作。在这项研究中，管状沸石膜反应器首次实现了几乎完全的 CO 转化和总 H2 回收，同时生产高压纯 CO2 流，用于高温高压下的水煤气变换反应。当在 500 °C 和 20 bar 下运行时，膜反应器实现了 CO 转化率 > 99.9% 和 H2 回收率 > 99.9%，高压纯 CO2 截留物在实际有意义的气时空速为 15,000 h-1 和蒸汽转化为 CO 的条件下比率为 3.5。