Recent Advances in Hydrotreating/Hydrodesulfurization Catalysts: Part I: Nature of Active Phase and Support

2021 ◽  
pp. 1-33
Author(s):  
G. Valavarasu ◽  
B. Ramachandrarao
Keyword(s):  
Active Phase ◽  
Hydrodesulfurization Catalysts ◽  
Recent Advances

Recent advances in the recovery of transition metals from spent hydrodesulfurization catalysts

Tungsten ◽  
2021 ◽  
Author(s):  
Jian-Zhang Wang ◽  
Hao Du ◽  
Afolabi Olayiwola ◽  
Biao Liu ◽  
Feng Gao ◽  
...  
Keyword(s):  
Transition Metals ◽  
Hydrodesulfurization Catalysts ◽  
Recent Advances

Characterization of the active phase of NiMo/Al2O3 hydrodesulfurization catalysts

2006 ◽  
Vol 32 (9) ◽  
pp. 857-870 ◽  
Author(s):  
Seung Tae Hong ◽  
Dal Ryung Park ◽  
Seung-Joon Yoo ◽  
Jae-Duck Kim ◽  
Hyung Sang Park
Keyword(s):  
Active Phase ◽  
Hydrodesulfurization Catalysts

scholarly journals Difficulties in the industrial introduction of new effective hydrodesulfurization catalysts in the Russian Federation

2021 ◽  
Vol 266 ◽  
pp. 02016
Author(s):  
R.R. Konoplin ◽  
N.K. Kondrasheva
Keyword(s):  
Aluminum Hydroxide ◽  
Laboratory Tests ◽  
Raw Materials ◽  
Active Phase ◽  
Mass Composition ◽  
Binding Properties ◽  
Hydrodesulfurization Catalysts ◽  
The World ◽  
The Russian Federation ◽  
Phase Chemical

The article presents bibliographic knowledgeof the world-scaleinventions that formed the basis ofHDS-catalysts for the development of variousoil products. Extensive studies were conductedon optimizationof carrier properties, active-phase chemical-mass composition, and basictech-nological parameters of transformation of initial components into active six-sided MoS2 groups which are decorated by CoS2 molecules, involving stages of desulfurization ofoxide formsof the catalyst. Differences in the microstructure of Al2O3supportsderived from aluminum hydroxide of vari-ous genesis are described. Comparative possibilitiesof binding properties of aluminum hydroxide raw materials in laboratory tests and molding of-waterpeptidized pastesare presented.

Electron Microscopy in hydrodesulfurization catalysts

1990 ◽  
Vol 48 (4) ◽  
pp. 260-261
Author(s):  
J. Cruz-Reyes ◽  
M. Avalos-Borja ◽  
M. H. Farias ◽  
S. Fuentes
Keyword(s):  
Electron Microscopy ◽  
Catalytic Properties ◽  
Active Phase ◽  
Molybdenum Sulfide ◽  
Catalyst Preparation ◽  
Cobalt Sulfide ◽  
Metal Sulfides ◽  
Slight Variation ◽  
Preparation Methods ◽  
Hydrodesulfurization Catalysts

Applications of transition metal sulfides for hydroprocessing catalysts have included a variety of reactions. It is generally believed that an interaction between the active phase (Mo or W) and the promoter (Co or Ni) takes place. Several models have been suggested to explain the enhanced catalytic activity. The catalytic properties of the unsupported sulfides are dependent on the catalyst preparation methods . In this work we study by electron microscopy two sets of unsupported samples ranging from molybdenum sulfide to cobalt sulfide. The specimens were prepared by the following methods, a slight variation of the classical homogeneous sulfide precipitation (HSP) method, and a new method called impregnated thiosalt decomposition (ITD).

scholarly journals Effect of Alumina Support on the Formation of the Active Phase of Selective Hydrodesulfurization Catalysts Co-Mo/Al2O3

2011 ◽  
Vol 32 (1-2) ◽  
pp. 240-249 ◽  
Author(s):  
Qiherima ◽  
Huifeng LI ◽  
Hui YUAN ◽  
Yunhong ZHANG ◽  
Guangtong XU
Keyword(s):  
Active Phase ◽  
Alumina Support ◽  
Hydrodesulfurization Catalysts
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