The superior hydrogenation of carbonyl (C=O) bonds in α, β-unsaturated aldehydes (UAL) has attracted considerable attention from economic and industrial perspectives. Several efforts have been made because hydrogenation of the olefin (CC) bond is kinetically and thermodynamically preferred over CO bond hydrogenation. Hence, to achieve superior hydrogenation of the targeted CO bond, highly active and durable catalysts are required. Herein, functional hydrogenation catalytic materials and their working principles are thoroughly discussed and apprehended. The active role of noble, non-noble mono/bi-metal catalysts and support materials along with the key factors arising from the structure of catalysts that promotes the CO bond selectivity were thoroughly disclosed. Essential techniques and strategies, such as tuning the surface electronic properties and generating electro-nucleophilic sites via synergistic effects, geometric effects, and applying a confinement or steric effect for improved CO bond hydrogenation, are briefly apprehended. The aggregate analysis suggested two crucial approaches for the engineering of a vastly selective and stable hydrogenation catalytic material: (1) tuning the electronic number of an active noble metal and (2) stabilizing the active noble metal by selecting distinctive support materials, especially metal-organic frameworks (MOFs) owing to its special physiochemical features, to construct robust metal-support interactions. In the end, various crucial key factors and additional active sites that are also encountered to attain the desired selectivity of the CO bond are concisely reviewed. Regardless of the numerous successes, significant development is still essential to expand our understanding of the preferential hydrogenation of challenging CO bonds in UAL.

中文翻译：

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了解可持续催化材料在α、β-不饱和醛中选择性加氢羰基键的工作原理


α、β-不饱和醛 （UAL） 中羰基 （C=O） 键的出色加氢作用引起了经济和工业角度的广泛关注。已经做出了一些努力，因为烯烃 （C C） 键的氢化在动力学和热力学上优于 C O 键氢化。因此，为了实现目标 C O 键的出色加氢，需要高活性和耐用的催化剂。本文对功能性加氢催化材料及其工作原理进行了深入的讨论和理解。本文全面揭示了贵金属、非贵金属单/双金属催化剂和载体材料的积极作用，以及催化剂结构中促进 C O 键选择性的关键因素。简要介绍了基本技术和策略，例如调整表面电子特性和通过协同效应、几何效应产生亲核位点，以及应用限制或空间效应以改善 C O 键氢化。聚集体分析提出了设计高选择性和稳定性氢化催化材料的两种关键方法：（1） 调整活性贵金属的电子数和 （2） 通过选择独特的支持材料来稳定活性贵金属，特别是由于其特殊的理化特性而具有金属有机框架 （MOF） 的金属-有机框架 （MOF），以构建强大的金属-支持相互作用。最后，简要回顾了为获得所需的 CO 键选择性而遇到的各种关键关键因素和其他活性位点。 尽管取得了众多成功，但重大发展对于扩大我们对 UAL 中具有挑战性的 C O 键的优先氢化的理解仍然至关重要。