Wang Jingru, Dong Xianshu, Fan Yuping, Wang Yingyong, Guo Xiangyun
College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China.
Molecules. 2024 Dec 29;30(1):93. doi: 10.3390/molecules30010093.
Hydrogenation of levulinic acid (LA) represents a significant approach for producing the high-value biomass-based platform compound γ-valerolactone (GVL). In this study, an efficient RuIr alloy bimetallic catalyst supported on SiC was synthesized and applied for the aqueous hydrogenation of LA into GVL under mild conditions. The RuIr/SiC catalyst exhibited high LA conversion and GVL selectivity (both > 99%) in water at 0.2 MPa H pressure and 25 °C. The excellent performance is attributed to the synergistic interaction between Ru and Ir nanoparticles on the semiconducting SiC support. Furthermore, the catalytic activity of the RuIr/SiC alloy remained basically unchanged after five cycles, confirming the high stability of the bimetallic alloy catalyst.
γ-戊内酯（GVL）是一种高价值的生物质基平台化合物，通过氢化乙酰丙酸（LA）来制备GVL是一种重要的方法。在本研究中，合成了一种负载于碳化硅（SiC）上的高效钌铱（RuIr）合金双金属催化剂，并将其应用于在温和条件下将LA水相加氢制备GVL。RuIr/SiC催化剂在0.2 MPa氢气压力和25℃的水中表现出高LA转化率和GVL选择性（均>99%）。优异的性能归因于半导体SiC载体上Ru和Ir纳米颗粒之间的协同相互作用。此外，RuIr/SiC合金经过五次循环后催化活性基本保持不变，证实了双金属合金催化剂的高稳定性。
