Selective hydrogenolysis of tetrahydrofurfuryl alcohol (THFA) to 1,5-pentanediol (1,5-PeD) over high-performance and non-noble catalysts under benign conditions is highly desirable. In this work, a series of Ni/Y₂O₃ catalysts with different Ni/Y molar ratios (1, 2.5, 5, 7.5, and 10) were synthesized and investigated for THFA hydrogenolysis to produce 1,5-PeD. Among all of the catalysts, Ni/Y₂O₃-5 (with a Ni/Y molar ratio of 5) exhibited the best THFA hydrogenolysis performance, achieving 84.2% THFA conversion and over 99.5% 1,5-PeD selectivity at 423 K and 3 MPa of H₂. Catalytic reaction tests and physicochemical characterization results indicated that the direct and close interaction between Ni and Y₂O₃ was beneficial for THFA deprotonation and fast H dissociation, which eventually facilitated the hydrogenolysis of THFA. The presence of the rare earth oxide Y₂O₃ in the Ni/Y₂O₃-5 catalyst can offer abundant moderate basic sites for THFA adsorption. In addition, the introduction of Y₂O₃ improved Ni dispersion and suppressed the sintering of Ni species. Activity degradation of the catalyst occurred in the cycling reaction due to partial oxidation of Ni, but H₂-reduction regeneration can recover most of its catalytic performance. Overall, this study indicates that Ni/Y₂O₃-5 can be used as a promising catalyst for effective upgrading of THFA and expands the application of rare earth oxides in the conversion of bioplatform compounds.

中文翻译：

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Ni/Y2O3 催化剂上四氢糠醇选择性加氢生产1,5-戊二醇

在良性条件下，通过高性能非贵金属催化剂将四氢糠醇 (THFA) 选择性氢解为 1,5-戊二醇 (1,5-PeD) 是非常理想的。在这项工作中，合成了一系列具有不同Ni/Y摩尔比（1、2.5、5、7.5和10）的Ni/Y ₂ O ₃催化剂，并研究了THFA氢解生产1,5-PeD的性能。在所有催化剂中，Ni/Y ₂ O ₃ -5（Ni/Y摩尔比为5）表现出最好的THFA氢解性能，在423 K下实现了84.2%的THFA转化率和超过99.5%的1,5-PeD选择性和3MPa的H ₂。催化反应测试和理化表征结果表明，Ni和Y ₂ O ₃之间直接而紧密的相互作用有利于THFA去质子化和快速H解离，最终促进THFA氢解。Ni/Y ₂ O ₃ -5 催化剂中稀土氧化物Y ₂ O ₃的存在可为THFA吸附提供丰富的中碱性位点。此外，Y ₂ O ₃的引入改善了Ni的分散并抑制了Ni物质的烧结。循环反应中由于Ni部分氧化而导致催化剂活性下降，但H ₂还原再生可恢复其大部分催化性能。总的来说，本研究表明Ni/Y ₂ O ₃ -5可以作为THFA有效升级的有前途的催化剂，并扩大稀土氧化物在生物平台化合物转化中的应用。