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<p>In this study, indium–zirconium catalysts with varying levels of lanthanum doping were synthesized via a hydrothermal method to evaluate their performance in the hydrogenation of carbon dioxide to methanol. To elucidate the effects of lanthanum incorporation, a comprehensive set of characterization techniques and catalytic evaluations was employed to examine structural modifications, surface properties, and catalytic activity. The results demonstrate that optimal lanthanum doping significantly improves both activity and selectivity, achieving a maximum space–time yield of 7.22 mmol·h<sup>− 1</sup>·g<sub>cat</sub><sup>−1</sup>. Detailed analyses revealed the influence of lanthanum on crystal phase composition, specific surface area, reducibility, adsorption behavior, and surface elemental distribution. A potential reaction mechanism is also proposed. This work provides valuable insights into the rational design of high-performance catalysts for CO₂ hydrogenation to methanol.</p> Graphical abstract <p></p>

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Enhance the Activity of CO2 Hydrogenation to Methanol Over La2O3 Promoted In2O3-ZrO2 Catalysts

  • 期刊论文

  • 发表日期：

    2025年7月4日

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  • Runqin Chen,
  • Wei Na,
  • Xiangying Wang,
  • Xingpeng Sun,
  • Xinyu Ling,
  • Jianyu Li,
  • Wengui Gao

摘要

In this study, indium–zirconium catalysts with varying levels of lanthanum doping were synthesized via a hydrothermal method to evaluate their performance in the hydrogenation of carbon dioxide to methanol. To elucidate the effects of lanthanum incorporation, a comprehensive set of characterization techniques and catalytic evaluations was employed to examine structural modifications, surface properties, and catalytic activity. The results demonstrate that optimal lanthanum doping significantly improves both activity and selectivity, achieving a maximum space–time yield of 7.22 mmol·h− 1·gcat−1. Detailed analyses revealed the influence of lanthanum on crystal phase composition, specific surface area, reducibility, adsorption behavior, and surface elemental distribution. A potential reaction mechanism is also proposed. This work provides valuable insights into the rational design of high-performance catalysts for CO₂ hydrogenation to methanol.

Graphical abstract