Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, I-20133 Milano, Italy.
National Council of the Research, CNR-ISTM, Via G. Fantoli 16/15, 20138 Milan, Italy.
Molecules. 2019 Jan 16;24(2):316. doi: 10.3390/molecules24020316.
Carbon nanofibers (CNFs) have been functionalized by introducing O, N, and P containing groups in order to investigate the effect of support functionalization in Ru catalysed hydroxymethyl furfural (HMF) and levulinic acid (LA) hydrogenation. In the case of HMF, despite the fact that no effect on selectivity was observed (all the catalysts produced selectively gamma-valerolactone (GVL)), the functionalization strongly affected the activity of the reaction. O-containing and N-containing supports presented a higher activity compared to the bare support. On the contrary, in HMF hydrogenation, functionalization of the support did not have a beneficial effect on the activity of a Ru-catalysed reaction with respect to bare support and only CNFs-O behaved similarly to bare CNFs. In fact, when CNFs-N or CNFs-P were used as the supports, a lower activity was observed, as well as a change in selectivity in which the production of ethers (from the reaction with the solvent) greatly increased.
为了研究载体功能化对钌催化羟甲基糠醛（HMF）和乙酰丙酸（LA）加氢反应的影响，对碳纳米纤维（CNFs）进行了功能化，引入了含 O、N 和 P 的基团。在 HMF 的情况下，尽管选择性没有受到影响（所有催化剂均选择性地生成γ-戊内酯（GVL）），但功能化强烈影响了反应的活性。含 O 和 N 的载体的活性高于裸载体。相反，在 HMF 加氢反应中，与裸载体相比，功能化载体对 Ru 催化反应的活性没有有益的影响，只有 CNFs-O 的行为与裸 CNFs 相似。事实上，当使用 CNFs-N 或 CNFs-P 作为载体时，观察到活性降低，以及选择性的变化，其中醚的生成（来自与溶剂的反应）大大增加。
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