大连理工大学王敏团队报道了木素油光催化升级为柴油前驱体和氢气。 相关研究成果发表在2021年5月7日出版的《德国应用化学》。

利用生物质生产可再生生物燃料是满足未来能源需求的一种有希望的途径。

该文中，研究人员证明了一个通过二聚木素油然后加氢脱氧制备木质素柴油路线。木质素油在可见光照射下，在Au/CdS光催化剂上进行CC键脱氢偶联，生成柴油前驱体和氢气。载于CdS上的金纳米粒子可以有效地抑制光生电子和空穴的复合，从而提高二聚反应的效率。

在Au/CdS上生成约2.4 mmol g过氧化氢-1 h-1二聚体和1.6 mmol g过氧化氢-1 h-1 h 2，分别是CdS的12倍和6.5倍。柴油前体分别在Pd/C和多孔CoMoS催化剂上通过加氢脱氧反应转化为C16-C18环烷烃或芳烃。将松木锯末转化为柴油以证明木质素转化为柴油路线的可行性。

附：英文原文

Title: Photocatalytic upgrading of lignin oil to diesel precursor and hydrogen

Author: Zhaolin Dou, Zhe Zhang, Hongru Zhou, Min Wang

Issue&Volume: 2021-05-07

Abstract: Producing renewable biofuels from biomass is a promising way to meet future energy demand. Here, we demonstrated a lignin to diesel route via dimerization of the lignin oil followed by hydrodeoxygenation. The lignin oil undergoes CC bond dehydrogenative coupling over Au/CdS photocatalyst under visible light irradiation, co‐generating diesel precursors and hydrogen. The Au nanoparticles loaded on CdS can effectively restrain the recombination of photogenerated electrons and holes, thus improving the efficiency of the dimerization reaction. About 2.4 mmol g  catal  ‐1  h  ‐1  dimers and 1.6 mmol g  catal  ‐1  h  ‐1  H  2  were generated over Au/CdS, which is about 12 times and 6.5 times over CdS, respectively. The diesel precursors are finally converted into C16‐C18 cycloalkanes or aromatics via hydrodeoxygenation reaction using Pd/C or porous CoMoS catalyst, respectively. The conversion of pine sawdust to diesel was performed to demonstrate the feasibility of the lignin‐to‐diesel route.

DOI: 10.1002/anie.202105692

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202105692