Applied Surface Science ( IF 6.3 ) Pub Date : 2021-11-13 , DOI: 10.1016/j.apsusc.2021.151869 Wenguang Zhao 1 , Zexing Huang 1 , Liu Yang 2 , Xianxiang Liu 1 , Hongye Xie 1 , Zixuan Liu 1
The hydrogenation of furan derivatives is of great scientific and strategic significance because the molecular diversity of the hydrogenation products ensures the efficient utilization of biomass resources. In this study, an inexpensive and magnetically separable bimetallic catalyst (NixCoy) was synthesised via solid-phase grinding. The catalyst exhibited efficient catalytic activity towards the hydrogenation of 5-hydroxymethylfurfural (HMF) into 2,5-bis(hydroxymethyl)furan (BHMF) and 2,5-dimethylfuran (DMF) at a low reaction temperature and H2 pressure. Further, the 93.1% and 80.1% yields of BHMF and DMF were obtained under the optimal conditions by controlling the temperature, respectively. Furthermore, the as-prepared catalysts were characterized via the thermogravimetry–derivative thermogravimetry (TG–DTG), X-ray photoelectron spectroscopy (XPS), inductively coupled plasma atomic emission spectroscopy (ICP-AES), X-ray diffraction (XRD), Fourier-transform infrared (FT–IR), and N2 adsorption–desorption isotherm techniques. Additionally, the synergistic catalytic effect of the hydrogenation sites in the Ni and Co metals, as well as the Lewis acid sites in NiO and CoO promoted the conversion of HMF into BHMF and DMF. Thereafter, the possible synergistic catalytic mechanism was proposed based on the characterization of the catalyst and the experimental results.
中文翻译:
通过生物质衍生的 5-羟甲基糠醛在镍钴双金属催化剂上加氢高效合成 2,5-双(羟甲基)呋喃和 2,5-二甲基呋喃
呋喃衍生物加氢具有重要的科学和战略意义,加氢产物的分子多样性保证了生物质资源的高效利用。在这项研究中,通过固相研磨合成了一种廉价且可磁分离的双金属催化剂(Ni x Co y)。该催化剂在低反应温度和 H 2压力。此外,通过控制温度,在最佳条件下分别获得了 93.1% 和 80.1% 的 BHMF 和 DMF。此外,所制备的催化剂通过热重-导数热重(TG-DTG)、X射线光电子能谱(XPS)、电感耦合等离子体原子发射光谱(ICP-AES)、X射线衍射(XRD)、傅里叶变换红外 (FT-IR) 和 N 2吸附-解吸等温线技术。此外,Ni 和 Co 金属中的氢化位点以及 NiO 和 CoO 中的路易斯酸位点的协同催化作用促进了 HMF 向 BHMF 和 DMF 的转化。此后,基于催化剂的表征和实验结果提出了可能的协同催化机理。