Selective Deep Hydrogenation of Acenaphthene to High-Density Fuel On Supported Ru Catalysts: The Role of Strong Metal-Support Interaction

被引：2
作者：
Guo, Zhen [1 ]
Niu, Xiaopo [1 ]
Liu, Danni [1 ]
Wu, Guiling [1 ]
Zhao, Wenli [1 ]
Qin, Yue [1 ]
Zhang, Kaige [1 ]
Jiang, Nan [1 ]
Zhang, Xiangwen [1 ]
Wang, Qingfa [1 ,2 ,3 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Key Lab Green Chem Technol, Minist Educ, Tianjin 300072, Peoples R China
[2] Tianjin Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
[3] Tianjin Univ, Zhejiang Inst, Ningbo 315201, Zhejiang, Peoples R China
来源：
CHEMNANOMAT | 2024年 / 10卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Supported Ru catalysts; SMSI; Acenaphthene; High density fuel; Deep hydrosaturation; AROMATIC-COMPOUNDS; NANOPARTICLES; NAPHTHALENE; OXIDATION; TETRALIN; RU/TIO2; CERIA;
D O I：
10.1002/cnma.202400092
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Developing high-performance aviation fuel is highly desired for the rapid development of supersonic aircraft. Herein, selective deep hydrogenation of polycyclic aromatics to a high-density fuel is developed over a Ru-based catalyst. The influences of strong Ru-support interaction on tailoring the reaction pathways of acenaphthene hydrogenation were investigated using different oxide supports (SiO2, CeO2, TiO2). Ru/CeO2 and Ru/TiO2 with strong SMSI possess abundant electron-deficient Ru delta+ species which exhibit a good ability to promote H2 dissociation and increase the isomerization rate of saturated aromatic compounds. Due to the enhanced adsorption of aromatic molecules, Ru/CeO2 (1.30 mu mol min-1 g-1) exhibits superior catalytic activity in comparison to Ru/TiO2 (1.25 mu mol min-1 g-1) during acenaphthene hydrosaturation, while Ru/TiO2 exhibits the highest isomerization reaction rate (7.60x10-2 mu mol min-1 g-1) because of its excellent hydrogen spillover ability and high content of Ru delta+ species. The best catalytic activity with 96 % selectivity of ccc-perhydroacenaphthene was achieved on Ru/TiO2, and an isomerization mechanism of perhydroacenaphthene isomers was proposed. Strong metal-support interaction (SMSI) in Ru/TiO2 leads to the well-dispersed electron-deficient Ru delta+ substances and the maximum Ru delta+ obtained. Moreover, the oxygen vacancies of the support enhance the adsorption of aromatic compounds for efficient deep hydrogenation of acenaphthene. Meanwhile, Ru delta+ species can promote H2 dissociation and enhance hydrogen spillover, which elevates the isomerization rate and realizes the high selectivity of cis-perhydroacenaphthene. image
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页数：10
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