Furfural was mainly used to produce furfuryl alcohol, which is a monomer of furan resins with a global market of ~$0.3 billion/year. Industrial production of furfuryl alcohol is via selective hydrogenation over toxic copper chromate under harsh conditions. Therefore, the search for active and non‐toxic alternatives is highly desired. Here, kinetics studies revealed an inhibitive effect caused by strong furfural adsorption on Ni‐based catalysts, resulting in sites blocking and undesired ring hydrogenation. Such an inhibitive effect can be alleviated over Ni‐Ga intermetallic surfaces by tuning the Ni coordination number, from which the Ni1Ga1 showed markedly enhanced furfuryl alcohol yield (~99%) at milder conditions comparing to the referred Ni catalyst. It is found that isolated Ni sites by Ga on the Ni1Ga1 enabled a tilted adsorption configuration through the carbonyl of furfural. In contrast, the stronger flat‐lying adsorption of furfural was favored on the contiguous Ni sites of the referred catalyst.

中文翻译：

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Ni-Ga金属间化合物选择性加氢糠醛生成糠醇的动力学和机理研究

糠醛主要用于生产糠醇，糠醇是呋喃树脂的单体，全球市场约3亿美元/年。糠醇的工业生产是通过有毒的铬酸铜在恶劣条件下选择性加氢来实现的。因此，非常需要寻找活性且无毒的替代品。在这里，动力学研究表明，糠醛对镍基催化剂的强烈吸附会产生抑制作用，导致位点阻塞和不需要的环氢化。通过调整 Ni 配位数，可以减轻 Ni-Ga 金属间表面的这种抑制作用，其中 Ni1嘎1与参考的镍催化剂相比，在更温和的条件下，糠醇产率显着提高（~99%）。发现 Ni 上的 Ga 隔离了 Ni 位点1嘎1通过糠醛的羰基实现倾斜吸附构型。相比之下，糠醛更强的平躺吸附有利于所提及催化剂的连续镍位点。