Promotion of Mo/Al2O3 Sulfide Catalyst by Noble Metals in Simultaneous Hydrodesulfurization of Thiophene and Hydrodenitrogenation of Pyridine: A Comparative Study

0104838 - UCHP-M 20040092 RIV NL eng J - Journal Article
Vít, Zdeněk - Cinibulk, Josef - Gulková, Daniela
Promotion of Mo/Al2O3 Sulfide Catalyst by Noble Metals in Simultaneous Hydrodesulfurization of Thiophene and Hydrodenitrogenation of Pyridine: A Comparative Study.
[Promoce sulfidického Mo/Al2O3 katalyzátoru vzácnými kovy v simultánní hydrodesulfurizaci thiofenu a hydrodenitrogenaci pyridinu: Srovnávací studie.]
Applied Catalysis A - General. Roč. 272, 1-2 (2004), s. 99-107. ISSN 0926-860X. E-ISSN 1873-3875
R&D Projects: GA AV ČR IAA4072103
Institutional research plan: CEZ:AV0Z4072921
Keywords : Mo catalyst * noble metal * HDS
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 2.378, year: 2004

Mo catalyst was modified by noble metals (Rh, Ru, Pd and Pt). Activity of the Mo catalyst increased after addition of Rh by a factor 12 in HDS of thiophene and after addition of Pt by a factor about 5 in HDN of pyridine. The synergy was influenced by two factors, by the state of the Mo phase before deposition of a noble metal, whether oxidic or sulfided, and by position of noble metal in the periodic system. Catalysts prepared by deposition of noble metals on a presulfided Mo possessed substantially higher activities than those prepared from an oxidic Mo catalyst. The addition of metals of the 2nd row (Rh,Ru and Pd)improved mainly HDS, while the metal of the 3rd row (Pt) improved more HDN

Mo catalyst was modified by noble metals (Rh, Ru, Pd and Pt). Activity of the Mo catalyst increased after addition of Rh by a factor 12 in HDS of thiophene and after addition of Pt by a factor about 5 in HDN of pyridine. The synergy was influenced by two factors, by the state of the Mo phase before deposition of a noble metal, whether oxidic or sulfided, and by position of noble metal in the periodic system. Catalysts prepared by deposition of noble metals on a presulfided Mo possessed substantially higher activities than those prepared from an oxidic Mo catalyst. The addition of metals of the 2nd row (Rh,Ru and Pd) improved mainly HDS, while the metal of the 3rd row (Pt) improved more HDN
Permanent Link: http://hdl.handle.net/11104/0000156