Abstract Cerium oxide (ceria) has found a wide variety of applications in catalysis including as a catalyst, a modifier, or a support, largely thanks to its robust redox properties and versatile acid-base function. While it is often utilized for oxidation reactions, ceria has recently attracted intense research interest for its unusual ability to selectively hydrogenate alkynes to alkenes. The intriguing hydrogenation ability of ceria has sparked renewed research efforts to understand how pure ceria works as a hydrogenation catalyst. In this review, recent advances in both experimental and computational studies of ceria are summarized, focusing on the interaction of ceria with H2 and in hydrogenation reactions. Significant insights from various studies including in situ spectroscopy/microscopy and theoretic modeling of ceria in hydrogen-involved reactions are discussed, which shed light on the origin of the hydrogenation ability of ceria and the reaction mechanisms involved in ceria-catalyzed alkyne hydrogenation. Ways to further improve both the mechanistic understanding and catalytic performance of ceria-based materials for hydrogenation reactions are proposed at the end in the summary and outlook section.

中文翻译：

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二氧化铈与氢气相互作用的综述及其在炔烃选择性加氢中的应用

摘要 氧化铈 (ceria) 在催化方面有着广泛的应用，包括作为催化剂、改性剂或载体，这主要归功于其强大的氧化还原性能和多功能的酸碱功能。虽然它经常用于氧化反应，但最近由于其独特的将炔烃选择性氢化为烯烃的能力而引起了强烈的研究兴趣。二氧化铈令人感兴趣的加氢能力激发了新的研究工作，以了解纯二氧化铈如何作为加氢催化剂发挥作用。在这篇综述中，对氧化铈的实验和计算研究的最新进展进行了总结，重点是氧化铈与 H2 的相互作用和氢化反应。讨论了来自各种研究的重要见解，包括原位光谱/显微镜和氧化铈在涉及氢的反应中的理论模型，这揭示了氧化铈氢化能力的起源以及氧化铈催化炔烃氢化中涉及的反应机制。在总结和展望部分的最后，提出了进一步提高氧化铈基材料用于加氢反应的机理理解和催化性能的方法。