Hydrodeoxygenation (HDO) of 2-acetylfuran (2-AF) was examined at 473 K and 33 bar over carbon-supported, bimetallic catalysts. Monodispersed, Pt-based (PtNi, PtCo, and PtCu) and Ni-based (NiCu) nanocrystals (NCs) with well-defined sizes and compositions were prepared via colloidal synthesis. Steady-state, flow-reactor measurements demonstrate that selectivities for HDO reaction to 2-ethylfuran (2-EF) are strongly dependent on the alloy compositions. The HDO of 2-AF is shown to be sequential, where 2-EF can react further to form over-hydrogenated products. The NiCu₃/C nanocatalyst was superior to the other bimetallics; with the optimal residence time, it achieved a selectivity of 75 % 2-EF with 80 % conversion of 2-AF, with good stability for up to at least five hours time-on-stream. Deactivation due to coking became an issue when the NCs were deposited on oxide supports with weak acidity (SiO₂ and γ-Al₂O₃). This work provides insights into which bimetallic catalytic systems might be useful for HDO of 2-AF reaction.

在碳负载的双金属催化剂上于473 K和33 bar下检测了2-乙酰基呋喃（2-AF）的加氢脱氧（HDO）。通过胶体合成制备了具有明确定义的尺寸和组成的单分散，Pt基（PtNi，PtCo和PtCu）和Ni基（NiCu）纳米晶体。稳态流动反应器测量表明，HDO反应生成2-乙基呋喃（2-EF）的选择性强烈取决于合金成分。2-AF的HDO被证明是连续的，其中2-EF可以进一步反应形成过度氢化的产物。镍铜₃/ C纳米催化剂优于其他双金属催化剂；以最佳的停留时间，它达到了75％的2-EF选择性和80％的2-AF转化率，并且在至少五个小时的运行时间内具有良好的稳定性。由于焦化失活成为一个问题时的NC沉积在用弱酸性氧化物载体（SIO ₂和γ-Al系₂ ö ₃）。这项工作为哪些双金属催化体系可能对2-AF反应的HDO有用提供了见解。