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<p>A NiO-CeO<sub>2</sub> catalyst pellet was developed for application in the low-temperature water-gas shift reaction (LT-WGSR) to facilitate hydrogen production from syngas derived from waste plastic gasification. The NiO-CeO<sub>2</sub> catalyst powder was synthesized via a co-precipitation method and subsequently formed into pellets through compression molding. LT-WGSR performance was evaluated at CO:H<sub>2</sub>O feed ratios of 1:2 –1:4 and operating temperatures of 180–220 ℃ under a gas hourly space velocity of 10,000&#xa0;h<sup>-1</sup>. The highest CO conversion (85–90%) was achieved at 200 ℃ with a CO:H<sub>2</sub>O ratio of 1:2, while the maximum H<sub>2</sub> selectivity (1.59–3.04) was obtained at 220 ℃ with a CO:H<sub>2</sub>O ratio of 1:3. These findings highlight the excellent low-temperature activity and hydrogen selectivity of NiO-CeO<sub>2</sub> catalyst pellets, underscoring their potential as efficient catalysts for sustainable hydrogen production.</p> Graphical Abstract <p></p>

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Catalytic Performance of the NiO-CeO2 Pellets in the Low-Temperature Water-Gas Shift Reaction

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • Chang-Jun Lee,
  • Cheol-Hwi Ryu,
  • Gab-Jin Hwang

摘要

A NiO-CeO2 catalyst pellet was developed for application in the low-temperature water-gas shift reaction (LT-WGSR) to facilitate hydrogen production from syngas derived from waste plastic gasification. The NiO-CeO2 catalyst powder was synthesized via a co-precipitation method and subsequently formed into pellets through compression molding. LT-WGSR performance was evaluated at CO:H2O feed ratios of 1:2 –1:4 and operating temperatures of 180–220 ℃ under a gas hourly space velocity of 10,000 h-1. The highest CO conversion (85–90%) was achieved at 200 ℃ with a CO:H2O ratio of 1:2, while the maximum H2 selectivity (1.59–3.04) was obtained at 220 ℃ with a CO:H2O ratio of 1:3. These findings highlight the excellent low-temperature activity and hydrogen selectivity of NiO-CeO2 catalyst pellets, underscoring their potential as efficient catalysts for sustainable hydrogen production.

Graphical Abstract