Advanced Biofuels Lab, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom.
Advanced Biofuels Lab, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom; School of Computing, Engineering & Digital Technologies, Teesside University, Middlesbrough TS1 3BA, United Kingdom.
Bioresour Technol. 2022 Oct;361:127727. doi: 10.1016/j.biortech.2022.127727. Epub 2022 Aug 6.
The use of lignin to produce Benzene, Toluene and Xylene (BTX) is a promising pathway to strength the economic case, over the production of advanced bio-fuels alone. In this work, Ce, Na, Pd and Fe supported on zirconium oxide were evaluated for the ex-situ hydropyrolysis (HyPy)/hydrodeoxygenation (HDO) of Etek lignin under mild conditions (600 °C, 1 atmosphere) towards the production of BTX. Fe/ZrO was able to selectively produce BTX (67 area%) and cycloalkenes (13.5 area%) and strongly deoxygenate the HyPy oil to about 5 wt% oxygen content, resulting in an oil with a carbon distribution of 85.5 % in C-C hydrocarbons. The high selectivity of Fe/ZrO was related to the iron oxophilicity, the strong reduction potential of zero-valent iron, the good dispersion of Fe nanoparticles on the support and the presence of mesopores and acid sites, which enhanced the interactions between the reacting species and the catalyst surface.
利用木质素生产苯、甲苯和二甲苯（BTX）是增强经济案例的有前途的途径，超过了单独生产先进生物燃料。在这项工作中，评估了负载在氧化锆上的铈、钠、钯和铁在温和条件（600°C，1 大气压）下对 Etek 木质素的异位加氢热解（HyPy）/加氢脱氧（HDO），以生产 BTX。Fe/ZrO 能够选择性地生产 BTX（67 面积%）和环烯烃（13.5 面积%），并将 HyPy 油强烈脱氧至约 5wt%的含氧量，得到一种碳分布在 85.5%的 C-C 烃中的油。Fe/ZrO 的高选择性与铁的亲氧性、零价铁的强还原电位、Fe 纳米粒子在载体上的良好分散性以及中孔和酸位的存在有关，这些都增强了反应物种与催化剂表面之间的相互作用。
