文献类型：期刊文献

英文题名：Enhanced ruthenium selectivity for the conversion of FAMEs to diesel-range alkanes by surface decoration of FeO_x species

作者：Cao, Xincheng[1,2,3,4,5,7] Zhao, Jiaping[1,2,3,4,8] Jia, Shuya[5] Long, Feng[1,2,3,4] Chen, Yuwei[6] Zhang, Xiaolei[5] Xu, Junming[1,2,3,4,8] Jiang, Jianchun[1,2,3,4,8]

第一作者：Cao, Xincheng

通信作者：Zhao, JP[1];Xu, JM[1];Jiang, JC[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China;[2]Chinese Acad Forestry, Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China;[3]Chinese Acad Forestry, Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Peoples R China;[4]Chinese Acad Forestry, Key & Open Lab Forest Chem Engn, SFA, Nanjing 210042, Peoples R China;[5]Univ Strathclyde, Dept Chem & Proc Engn, Proc Cybernet Grp, Glasgow, Scotland;[6]Yancheng Inst Technol, Yancheng 224051, Peoples R China;[7]Southwest Forestry Univ, Key Lab Natl Forestry, Grassland Adm Highly Efficient Utilizat Forestry B, Kunming 650224, Yunnan, Peoples R China;[8]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing, Peoples R China

年份：2024

卷号：481

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001154591500001)】；

基金：The study (No. 2023-KF13) was supported by the Key Laboratory of National Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, and the National Natural Science Foundation of China (2019YFB1504005 and 2019YFB1504000) . Meantime, the authors would like to thank the High-Performance Computer, ARCHIE-WeSt, at University of Strathclyde.

语种：英文

外文关键词：Hydrodeoxygenation; Ru-Fe catalyst; C -C bond hydrogenolysis; Diesel -range alkanes

摘要：Ruthenium -based catalysts have been widely used in the lignin depolymerization and polystyrene hydrogenolysis reactions due to its superior hydrogenolysis activity for C -O and C -C bonds. However, serious cleavage of C -C bonds at high temperatures greatly limits its application in the production of green biodiesel from the conversion of natural oils and bio-derived fatty esters. In this work, we found that introducing a suitable second less -reactive metal (e.g., Fe, Zn) can effectively suppress the hydrogenolysis activity of ruthenium (Ru) metal for C -C bonds and exhibit a high selectivity (>90 %) to diesel -range alkanes (C-15 -C-18 alkanes) in the conversion of fatty acid methyl esters (FAMEs) even at high reaction temperature (250 C-degrees) over the Ru1Fe0.5 catalyst, while an obvious cracking reaction was observed from 210 C over the monometallic Ru catalyst. Detailed characterization and theoretical calculation results reveal that the introduction of Fe species in the RuFe catalysts weakens the interaction between catalyst and the resulting alkanes, which inhibits the cracking of alkanes. Specifically, adding Fe species breaks the ensemble of Ru atoms and decreases the binding affinity of metallic Ru for H-2, which suppresses the activity of Ru metal for the hydrogenolysis of C -C bonds and exhibits a high selectivity to diesel -range alkanes. This research provides valuable information for improving the hydrodeoxygenation (HDO) selectivity of Ru-based catalysts while inhibiting its high hydrogenolysis activity for C -C bonds.