文献类型：期刊文献

英文题名：Catalytic hydrocracking of pyrolytic lignin over bimetallic Ru-M/HZSM-5 (M = Ni, Fe or Co) for aromatic hydrocarbon production

作者：Cai, Qinjie[1,2]; Hu, Zewei[1]; Dong, Zhijia[1]; Zhang, Suping[2]

机构：[1] Zhejiang Key Laboratory of Multiflow and Fluid Machinery, Zhejiang Sci-Tech University, Hangzhou, 310018, China; [2] School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2025

卷号：193

外文期刊名：Journal of Analytical and Applied Pyrolysis

收录：EI(收录号：20254019259859)

语种：英文

外文关键词：Aromatization - Binary alloys - Catalysts - Cobalt alloys - Data mining - Iron alloys - Lignin - Mineral oils - Reusability - Ruthenium - Ruthenium alloys - Ternary alloys

摘要：Pyrolytic lignin (PL) can be converted into aromatic hydrocarbons through catalytic hydrocracking. This study investigated the performance of bimetallic Ru-M/HZSM-5 catalysts (M = Ni, Fe, or Co) in the hydrocracking of PL, focusing on the impact of introducing a second metal on the efficiencies of hydrodepolymerization (HDP) and hydrodeoxygenation (HDO). The 2Ru-5Ni/HZSM-5 catalyst exhibited the best performance in HDP and HDO. The introduction of Ni enabled the formation of RuNi alloy and additional metallic Ni sites for H2activation to enhance HDP. Furthermore, the RuNi alloy was proposed to promote the HDO of monophenols via a short-path hydrogen spillover between Ru and Ni, which was more efficient than HDO mediated by co-working of Ru and acid sites on unmodified Ru/HZSM-5. While RuFe and RuCo alloys could also strengthen HDO of monophenols through the aforementioned mechanism, the reduction of strong Br?nsted acid sites by the incorporation of Fe or Co adversely impacted HDP. Under the optimum reaction conditions, the oil phase yield from hydrocracking over 2Ru-5Ni/HZSM-5 reached 51.42?%, with GC-detectable products accounting for approximately 78?%. Particularly, the yields of mono-ring and double-ring aromatic hydrocarbons were 21.08?% and 8.66?%, respectively. In addition, this catalyst demonstrated excellent reusability. ? 2025 Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies.