Nickel-tungsten sulfide aromatic hydrocarbon hydrogenation catalysts synthesized in situ in a hydrocarbon medium

2015 ◽  
Vol 55 (6) ◽  
pp. 470-480 ◽  
Author(s):  
I. A. Sizova ◽  
S. I. Serdyukov ◽  
A. L. Maksimov
Keyword(s):  
Aromatic Hydrocarbon ◽  
Hydrogenation Catalysts ◽  
Tungsten Sulfide ◽  
Hydrocarbon Medium ◽  
Nickel Tungsten

Synthesis of Ni–W aromatic hydrocarbon hydrogenation catalysts by the ex situ and in situ decomposition of a precursor based on a dendrimer network

2016 ◽  
Vol 56 (12) ◽  
pp. 1107-1113 ◽  
Author(s):  
I. A. Sizova ◽  
A. B. Kulikov ◽  
A. V. Zolotukhina ◽  
S. I. Serdyukov ◽  
A. L. Maksimov ◽  
...  
Keyword(s):  
Aromatic Hydrocarbon ◽  
Ex Situ ◽  
Hydrogenation Catalysts ◽  
In Situ Decomposition

scholarly journals Effect of Additives on the Activity of Nickel–Tungsten Sulfide Hydroconversion Catalysts Prepared In Situ from Oil-Soluble Precursors

Catalysts ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 644 ◽  
Author(s):  
Mariia Kniazeva ◽  
Anton Maximov
Keyword(s):  
Zeolite Y ◽  
Acid Sites ◽  
System Component ◽  
Gas Oil ◽  
Tungsten Sulfide ◽  
Silica Alumina ◽  
Acidic Component ◽  
Amorphous Aluminosilicate ◽  
Nickel Tungsten

The nickel–tungsten sulfide catalysts for the hydroconversion of hydrocarbons were prepared from oil-soluble nickel and tungsten precursor compounds in situ with the use of silica, alumina, titania, zeolite Y, and amorphous aluminosilicate as additives in a vacuum gas oil medium. It was found that the catalytic activity in hydrocracking depends on the concentration of acid sites in the resulting catalyst. With the use of oxide additives, the dispersion and the promoter ratio of the in situ formed sulfide particles increased in the order SiO2–Al2O3–TiO2. It was noted that the promoter ratio of sulfide particles obtained with the use of aluminosilicate additives depended on their porous structure peculiarities. The use of titanium dioxide as a catalytic system component made it possible to reach high activity in hydrocracking, hydrodearomatization, and hydrodesulfurization, which was comparable to that of a system based on zeolite Y, a highly acidic component.

A new precursor for synthesis of nickel-tungsten sulfide aromatic hydrogenation catalyst

2021 ◽  
Vol 502 ◽  
pp. 111357
Author(s):  
S.I. Serdyukov ◽  
M.I. Kniazeva ◽  
I.A. Sizova ◽  
Y.V. Zubavichus ◽  
P.V. Dorovatovskii ◽  
...  
Keyword(s):  
Hydrogenation Catalyst ◽  
Tungsten Sulfide ◽  
Aromatic Hydrogenation ◽  
Nickel Tungsten

scholarly journals Occurrence of Penta-Aromatic Hydrocarbons in Jaintia and Barail Group Mudstones, Northeastern Bengal Basin, Bangladesh

2014 ◽  
Vol 8 ◽  
pp. 105-112
Author(s):  
HM Zakir Hossain ◽  
Md Sultan-Ul-Islam ◽  
Quazi Hasna Hossain
Keyword(s):  
Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbons ◽  
Concentration Distribution ◽  
Gas Chromatography Mass Spectrometry ◽  
Bengal Basin ◽  
Drill Core ◽  
Environmental Condition ◽  
High Concentration ◽  
Biogenic Origin

In the present experiment, concentration, distribution and sources of penta-aromatic hydrocarbons in seven drill core and outcrop samples from Jaintia and Barail Group mudstones, northeastern Bengal Basin, Bangladesh have been studied. Gas chromatography-mass spectrometry (GC-MS) was used to obtain composition details about the sedimentary organic matter (OM). Mudstone samples were found to contain relatively high penta-aromatic hydrocarbon abundances in the lower Jaintia Group than in the overlying Barail Group. High concentration of perylene suggests terrigenous sources and significantly higher content of total organic carbon in the samples. A biogenic origin of perylene therefore indicates oxygen deficient environmental condition for deposition of OM. Perylene over pentacyclic aromatic hydrocarbon isomers regulating in-situ diagenetic origin. DOI: http://dx.doi.org/10.3329/jles.v8i0.20154 J. Life Earth Sci., Vol. 8: 105-112, 2013

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