Ruthenium carbonyls as benzo[b]thiophene hydrodesulfurization catalysts in homogeneous phase

It was found spectroscopically that cobalt(II) acetate dissolved in glacial acetic acid forms the octahedral complex [Co(OAc)2(HOAc)4] which in the presence of bromide ions gives the octahedral [Co(OAc)Br(HOAc)4] and tetrahedral bromo(acetate)cobalt(II) complexes with the higher number of Br- ions. When attached to an organic polymer cobalt(II) ions are bonded in the form of octahedral [Co(H2O)6]2+ cations which form with acetic acid similar complexes as in homogeneous phase and are able to coordinate one bromide ion. Drying the copolymer possessing octahedral hexaaquocobalt(II) cations leads to tetrahedral aquocomplexes which are solvated by gaseous acetic acid and converted into the acetate complexes with the liquid acid. The latter contain the acid in the inner coordination sphere and have tetrahedral symmetry.

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Preparation and Evaluation of Skeletal Cobalt-Molybdenum Hydrodesulfurization Catalysts

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19950568 ◽

1995 ◽

Vol 60 (4) ◽

pp. 568-575

Author(s):

Karel Sporka ◽

Jiří Hanika ◽

Vladimír Jůn

Keyword(s):

Aqueous Solutions ◽

Active Component ◽

Catalyst Activity ◽

Gas Oil ◽

Gamma Alumina ◽

Molybdenum Sulfides ◽

Hydrodesulfurization Catalysts ◽

Hds Catalysts ◽

Kinetics Of ◽

Preparation And Evaluation

Preparation of skeletal Co-Mo catalysts by controlled impregnation of aluminosilicate skeletons containing deposited gamma-alumina with aqueous solutions of active component precursors has been investigated. The activity of the laboratory catalysts in gas oil hydrodesulfurization has been determined. Kinetics of impregnation of skeletal supports, the effect of their type, and the dependence of catalyst activity on the content of cobalt and molybdenum sulfides are reported. HDS skeletal catalysts prepared were compared with the extruded types. It was found that skeletal HDS catalysts show the higher activity (related to the content of alumina and Co-Mo sulfides) than the extruded ones due to the less significant effect of internal diffusion. However, if the activity is related to the same volume of catalyst bed, the activity of skeletal catalysts is only one fourth of that of the extruded types.

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Sunflower oil hydrogenation on Pt catalysts: Comparison between conventional process and homogeneous phase operation using supercritical propane

Catalysis Today ◽

10.1016/j.cattod.2007.11.036 ◽

2008 ◽

Vol 133-135 ◽

pp. 836-841 ◽

Cited By ~ 21

Author(s):

Cristian M. Piqueras ◽

Gabriela Tonetto ◽

Susana Bottini ◽

Daniel E. Damiani

Keyword(s):

Sunflower Oil ◽

Pt Catalysts ◽

Homogeneous Phase ◽

Conventional Process

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Ultrasonication-assisted synthesis of 2D porous MoS2/GO nanocomposite catalysts as high-performance hydrodesulfurization catalysts of vacuum gasoil: Experimental and DFT study

Ultrasonics Sonochemistry ◽

10.1016/j.ultsonch.2021.105558 ◽

2021 ◽

Vol 74 ◽

pp. 105558

Author(s):

Zohal Safaei Mahmoudabadi ◽

Alimorad Rashidi ◽

Ahmad Tavasoli ◽

Mehdi Esrafili ◽

Mohammad Panahi ◽

...

Keyword(s):

High Performance ◽

Vacuum Gasoil ◽

Dft Study ◽

Hydrodesulfurization Catalysts ◽

Nanocomposite Catalysts

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Cryogenic approach to the synthesis of molybdenite-based hydrodesulfurization catalysts

10.1063/5.0035108 ◽

2020 ◽

Author(s):

Taisia A. Fedushchak ◽

Mikhail A. Uyimin ◽

K. N. Lisovaya ◽

Sergey P. Zhuravkov ◽

Akim S. Akimov ◽

...

Keyword(s):

Hydrodesulfurization Catalysts

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Molecular simulation on mechanism of thiophene hydrodesulfurization on surface of Ni2P

Energy Exploration & Exploitation ◽

10.1177/0144598721994950 ◽

2021 ◽

pp. 014459872199495

Author(s):

Songjian Du ◽

Tingting Li ◽

Xinwei Wang ◽

Liqiang Zhang ◽

Zhengda Yang ◽

...

Keyword(s):

Density Functional Theory ◽

Reaction Mechanism ◽

Heavy Oil ◽

Density Functional ◽

Reaction Path ◽

Functional Theory ◽

Thiophene Hydrodesulfurization ◽

Cracking Reaction ◽

Materials Studio ◽

Optimal Reaction

Hydrodesulfurization reaction, as the last step of hydrothermal cracking reaction, is of great significance for the reduction of viscosity and desulfurization of heavy oil. Based on Density Functional Theory and using Dmol3 module of Materials Studio, this research simulated the adsorption and hydrodesulfurization of thiophene on Ni2P (001) surface, and discussed the hydrodesulfurization reaction mechanism of thiophene on Ni2P (001) surface. It was found that the direct hydrodesulfurization of thiophene had more advantages than the indirect hydrodesulfurization of thiophene. Finally, the optimal reaction path was determined: C4H4S+H2→C4H6.

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