ELUCIDATION OF MICROSTRUCTURE ON MOS2-TiO2 INTERFACE IN MO/TiO2 CATALYST BY HREM AND CRYSTALLOLOGY

Abstract

Abstract: Nano anatase-TiO2(A-TiO2) support was synthesized by hydrothermal method. Subsequently, Mo/TiO2 catalyst was prepared by impregnation method and sulfided by dry method under H2S/H2（10 %）mixed gas. The microstructure of the sulfided Mo/TiO2 catalyst was observed by HREM. The results indicate that except base-bonding, MoS2 slab is also anchored on (101) facet of TiO2 with edge-bonding through (001) facet of MoS2. The facet angle between (001) MoS2 and (101) A-TiO2 is 66°. This orientation relationship is elucidated by Coincidence Reciprocal Lattice Points (CRLP) theory.

Key words: Mo/TiO2, interface, coincidence reciprocal lattice point theory

CLC Number:

References

1. G. D.-M. Michèle Breysse, Stéphanie Pessayre, Christophe Geantet, Michel Vrinat, Guy Pérot, Marc Lemaire.Deep desulfurization: reactions, catalysts and technological challenges.Catalysis Today, 84(2003):129-138 2. C. Song.An overview of new approaches to deep desulfurization for ultra-clean gasoline, diesel fuel and jet fuel.Catalysis Today, 86(2003):211-263 3. T. C. Ho.Deep HDS of diesel fuel: chemistry and catalysis.Catalysis Today, 98(2004):3-18 4. 王继元, 堵文斌, 陈韶辉, 朱庆奋 and 曾崇余.TiO2 载体在柴油加氢脱硫中的应用进展.化工进展, 29 (4)(2010):654-658 5. J. Ramirez, L. Cedeno and G. Buscay.The Role of Titania Support in Mo-Based Hydrodesulfurization Catalysts.Journal of Catalysis, 184(1999):59-67 6. J. Ram?′rez, G. Mac?′as, L. Ceden?o, A. Gutie′rrez-Alejandre, R. Cuevas and P. Castillo.The role of titania in supported Mo, CoMo, NiMo, and NiW hydrodesulfurization catalysts: analysis of past and new evidences.Catalysis Today, 98 (2004):19-30 7. L. Coulier, J. A. R. V. Veen and J. W. Niemantsverdriet. TiO2-supported Mo model catalysts：Ti as promoter for thiophene HDS?Catalysis Letters, 79 (1-4)(2002):149-155 8. D. H. Wang, L. W and T. K. Y. e. al.Promoting effect of fluorine on titania-supported cobalt-molybdenum hydrodesulfurization catalysts.Applied Catalysis A：General, 317(2007):105-112 9. H. Tops?e.The role of Co–Mo–S type structures in hydrotreating catalysts.Applied Catalysis A: General, 322(2007):3-8 10. Y. Arak, K. Honna and a. H. Shimada.Formation and Catalytic Properties of Edge-Bonded Molybdenum Sulfide Catalysts on TiO2.Journal of Catalysis, 207(2002):361 11. C. Arrouvel, M. Breysse, H. Toulhoat and P. Raybaud.A density functional theory comparison of anatase (TiO2)- and gamma-Al2O3-supported MoS2 catalysts.Journal of Catalysis, 232 (1)(2005):161-178 12. D. Costa, C. Arrouvel, M. Breysse, H. Toulhoat and P. Raybaud.Edge wetting effects of gamma-Al2O3 and anatase-TiO2 supports by MoS2 and CoMoS active phases: A DFT study.Journal of Catalysis, 246 (2)(2007):325-343 13. w. Zhaobin, S. Jiang, Q. Xin, S. Sheng and G. Xieng.The reduction behavior of Mo/TiO2-Al2O3 catalyst.Catal Lett, 11(1991):365-374 14. S. Dzwigaj, C. Louis and M. Breysse.New generation of titanium dioxide support for hydrodesulfurization.Applied Catalysis B：Environmental, 41：.(2003):181-191 15. S. Inoue, M. A and K. H.Preparation of novel titania support by applying the multi- gelation method for ultra-deep HDS of diesel oil Applied Catalysis A：General, 269(2004):7-12 16. LCede?o-Caero, A. R. Romero and J. Ramirez.Niobium sulfide as a dopant for Mo/TiO2 catalysts[J]. .Catalysis Today, 78(2003):513-518 17. L. C. Caero, R. Zanella and P. Schacht.Synthesis and characterization of Ce-stabilized titania for NiMo HDS catalysts[J].Catalysis Today, 98(2004):83-89. 18. J. Escobar, J. A. Toledo and E. Torres-García.Highly active sulfided CoMo catalyst on nano-structured TiO2.Catalysis Today, 106(2005):222-226 19. W. W. Chanmanee, A.; Chenthamarakshan, C. R.; Kajitvichyanukul, P.; de Tacconi, N. R.; Rajeshwar, K.Formation and Characterization of Self-Organized TiO2 Nanotube Arrays by Pulse Anodization.J. Am. Chem. Soc., 130 (3)(2008):965 20. S. Stemmer, P. Pirouz, Y. Ikuhara and R. F. Davis.Film /Substrate Orientation Relationship in the AlN/6H-SiC Epitaxial System.Physical review letters, 77 (9)(1997):1797-1800 21. R. YU, L. L. HE, J. T. GUO, H. Q. YE and V. LUPINC.Orientation relationship and interfacial structure between z-Ti5Si3 precipiates and g-TiAl intermetallics.Acta mater. , 48(2000):3701-3710 22. C. L. Chen, W. Lu, J. P. Lin, L.L. He, G. L. Chen and H. Q. Ye.Orientation relationship between TiB precipitate and c-TiAl phase.Scripta Materialia, 56(2007):441-444 23. S. Yukio, A. Yasuhiro, H. kosaku and S. Hiromichi.Orientation and Morphology of Molybdenum Sulfide Catalysts Supported on Titania Particles: Observed by using High-Resolutin Electron Mocroscopy.Appl. Catal, 105(1993):69-75

[1]	. DESIGNING Pt-Co-ZnO TERNARY INTERFACES FOR ENHANCED CO₂ HYDROGENATION PERFORMANCE THROUGH LATTICE MATCHING [J]. PETROLEUM PROCESSING AND PETROCHEMICALS, 2024, 55(2): 144-152.
[2]	. RESEARCH PROGRESS ON INTERFACE STRUCTURE REGULATION OF ELECTROLYTIC WATER CATALYSTS [J]. PETROLEUM PROCESSING AND PETROCHEMICALS, 2024, 55(2): 1-9.
[3]	. MECHANISM OF BINARY COMPLEX SURFACTANT IN OIL - WATER INTERFACE [J]. Petroleum Processing and Petrochemicals, 2018, 49(9): 43-48.