Photocatalytic Upgrading of Lignin Oil to Diesel Precursors and Hydrogen,Angewandte Chemie International Edition

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Photocatalytic Upgrading of Lignin Oil to Diesel Precursors and Hydrogen
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-05-07 , DOI: 10.1002/anie.202105692
Zhaolin Dou ₁ , Zhe Zhang ₁ , Hongru Zhou ₁ , Min Wang ₁

Affiliation

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 C−C 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 H₂ were generated over Au/CdS, which is about 12 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.

中文翻译：

木质素油光催化升级柴油前驱体和氢气

从生物质中生产可再生生物燃料是满足未来能源需求的一种很有前景的方式。在这里，我们通过木质素油的二聚化和加氢脱氧展示了木质素到柴油的路线。在可见光照射下，木质素油在 Au/CdS 光催化剂上发生 C-C 键脱氢偶联，共同产生柴油前体和氢气。负载在 CdS 上的 Au 纳米粒子可以有效抑制光生电子和空穴的复合，从而提高二聚反应的效率。大约 2.4 mmol g _catal^-1 h ^-1二聚体和 1.6 mmol g _catal^-1 h ^-1 H ₂是在 Au/CdS 上产生的，分别是 CdS 的 12 倍和 6.5 倍。柴油前体最终分别通过使用 Pd/C 或多孔 CoMoS 催化剂的加氢脱氧反应转化为 C16-C18 环烷烃或芳烃。将松木屑转化为柴油是为了证明木质素到柴油路线的可行性。

更新日期：2021-07-12

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