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Dopamine sacrificial coating strategy driving formation of highly active surface-exposed Ru sites on Ru/TiO2 catalysts in Fischer-Tropsch synthesis
Lyu, SS; Cheng, QP; Liu, YH; Tian, Y; Ding, T; Jiang, Z; Zhang, J; Gao, F; Dong, L; Bao, J; Ma, QX; Yang, QH; Li, XG
2020
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
ISSN0926-3373
Volume278Pages:-
Subtype期刊论文
AbstractGenerally, strong metal-support interactions of reducible metal oxides supports will cause encapsulation of suboxides on metal catalysts. It inevitably brings the formation of metal-support interfacial sites, and decreases surface-exposed metal sites. Herein, we synthesize Ru/TiO2 catalysts through a dopamine sacrificial coating strategy, which significantly increases the number of surface-exposed Ru sites with the high dispersion. The as-synthesized Ru/TiO2-500-H catalyst exhibits the high Fischer-Tropsch synthesis performance and catalytic stability. We discover that the TOF of surface-exposed Ru sites is 5.3-fold that of interfacial ones in our catalyst system. Moreover, surface-exposed Ru sites could thermal-stably adsorb CO, stimulate the chain growth and promote the C5+ selectivity by strengthening the bond between CHx intermediates and metal sites, as evidenced by in situ characterizations operated under real operating conditions. Our findings provide comprehensive understandings of rationally designing highly efficient metal catalysts, which can be potentially applied in other related catalysis systems.
KeywordMETAL-SUPPORT INTERACTIONS RUTHENIUM NANOPARTICLES COBALT CATALYST CARBON-MONOXIDE CO ADSORPTION SYNTHESIS GAS INFRARED-SPECTRA PARTICLE-SIZE ACETIC-ACID HYDROGENATION
DOI10.1016/j.apcatb.2020.119261
Indexed BySCI ; EI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/32813
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Tianjin Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Sch Chem Engn & Technol, State Key Lab Chem Engn, Tianjin 300072, Peoples R China
2.Tianjin Key Lab Appl Catalysis Sci & Engn, Tianjin 300072, Peoples R China
3.Nanoyang Grp, Tianjin 300072, Peoples R China
4.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201800, Peoples R China
5.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China
6.Nanjing Univ, Ctr Modern Anal, Jiangsu Key Lab Vehicle Emiss Control, Nanjing 21009, Peoples R China
7.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Peoples R China
8.Ningxia Univ, State Key Lab High Efficiency Coal Utilizat & Gre, Yinchuan 750021, Ningxia, Peoples R China
Recommended Citation
GB/T 7714
Lyu, SS,Cheng, QP,Liu, YH,et al. Dopamine sacrificial coating strategy driving formation of highly active surface-exposed Ru sites on Ru/TiO2 catalysts in Fischer-Tropsch synthesis[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2020,278:-.
APA Lyu, SS.,Cheng, QP.,Liu, YH.,Tian, Y.,Ding, T.,...&Li, XG.(2020).Dopamine sacrificial coating strategy driving formation of highly active surface-exposed Ru sites on Ru/TiO2 catalysts in Fischer-Tropsch synthesis.APPLIED CATALYSIS B-ENVIRONMENTAL,278,-.
MLA Lyu, SS,et al."Dopamine sacrificial coating strategy driving formation of highly active surface-exposed Ru sites on Ru/TiO2 catalysts in Fischer-Tropsch synthesis".APPLIED CATALYSIS B-ENVIRONMENTAL 278(2020):-.
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