Abstract Catalytic valorization of furfural (FUR) using a simple and low-cost metal catalyst has been considered as a hot topic in sustainable chemistry. In this work, a new Ni@R-Ca catalyst is prepared via the auto-combustion and in situ reduction method. When it is employed to promote the catalytic valorization of FUR in aliphatic alcohol, a nearly complete FUR conversion with excellent product selectivity is obtained under mild reaction conditions. Using methanol as reaction medium, the sole product is furfuryl alcohol (FA) in which ca. 99% yield of FA was attained. While, in ethanol, the obtained products mainly contain FA and furan-2-acrolein (FUA) in which a 94% conversion of FUR with a 91% total selectivity of FA and FUA was acquired. Based on the characterization of catalyst including XRD, SEM, XPS and H2-TPR techniques, it is concluded that the synergy effect of metal Ni and R-Ca crystal lattice plays a crucial role in the efficient conversion of FUR in aliphatic alcohol.

中文翻译：

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生物质衍生的糠醛在甲醇和乙醇中的高效催化转化

摘要 使用简单且低成本的金属催化剂催化糠醛 (FUR) 升值已被认为是可持续化学中的一个热门话题。在这项工作中，通过自燃和原位还原法制备了一种新型 Ni@R-Ca 催化剂。当它用于促进脂肪醇中 FUR 的催化升值时，在温和的反应条件下获得了几乎完全的 FUR 转化和优异的产物选择性。使用甲醇作为反应介质，唯一的产物是糠醇（FA），其中约。达到了 99% 的 FA 收率。而在乙醇中，所得产物主要含有 FA 和呋喃-2-丙烯醛 (FUA)，其中 FUR 转化率为 94%，FA 和 FUA 的总选择性为 91%。基于包括XRD、SEM、XPS和H2-TPR技术的催化剂表征，