Promotion effects with dispersed catalysts for residue slurry hydroconversion

Nguyen, Thien S.; Tayakout‐Fayolle, Mélaz; Lacroix, Maxime; Gotteland, D.; Aouine, M.; Bacaud, R.; Afanasiev, P.; Geantet, Christophe

doi:10.1016/j.fuel.2015.07.012

Cited by 40 publications

(19 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, border area of an amorphous Ni-sulfide with thick coating by MoS2 slabs was confirmed in the supported catalysts [8,9]. By mixing of Ni and Mo oil-soluble precursor, most of Ni3S2 particles were decorated by at least one MoS2 slab, improving the conversion and hydrodesulfurization (HDS) in atmospheric residue hydrocracking [10].…”

Section: Introductionmentioning

confidence: 71%

See 1 more Smart Citation

Study of NiMoS mixed phase from catalyst precursors in residue slurry-bed hydrocracking

Du¹,

Deng²,

Li³

et al. 2017

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract. The evolution and role of NiMoS structures from catalyst precursors on residue hydrocracking was investigated. NiMoS mixed phase played important roles in unsupported catalyst and heavy oil development, such as synergy effect and coke inhibiting. The oil-soluble molybdenum naphthenate and nickel naphthenate were chosen as catalyst precursors. The mixtures of the precursor were compared to those of other monometallic oil-soluble precursor in an effort to evaluate the evolution and role of NiMoS phase in the slurry bed hydrocracking of heavy oil. The presence of NiMoS phase were characterized by X-ray diffraction (XRD), TEM and XPS. The series of tests in the slurry-phase reactor was to confirm the synergy effect of NiMoS mixed phase.

show abstract

Section: Introductionmentioning

confidence: 71%

“…So the mixed phase of MoNi catalyst is better analyzed through other methods, such as TEM and XPS [10,15]. As shown in the TEM image of the MoNi catalyst after reaction (Figure 2(a)), nickel sulfides crystals were decorated with MoS2 layers, this suggested the NiMoS mixed phase existed in MoNi catalyst.…”

Section: Nimos Phase Of Catalyst After Reactionmentioning

confidence: 97%

Study of NiMoS mixed phase from catalyst precursors in residue slurry-bed hydrocracking

Du¹,

Deng²,

Li³

et al. 2017

AIP Conference Proceedings

View full text Add to dashboard Cite

show abstract

“…Therefore, in order to improve the catalytic performance, most efforts are focused on the development of homogeneous highly dispersant oil-soluble catalysts. Although, many synthetic methods of oil-soluble molybdenum catalysts have been proposed, most of them are applied to residue upgrading (Ortiz-Moreno et al 2014;Nguyen et al 2015;, there are few investigations about the applicability of oil-soluble molybdenum catalysts in coal-oil co-processing to our knowledge.…”

Section: Introductionmentioning

confidence: 99%

Study on Hydrogenation Performance of Oil-Soluble Molybdenum Catalyst in Coal-Oil Co-Processing

Wang

Xiqian

Zhao

2022

Preprint

View full text Add to dashboard Cite

An oil-soluble molybdenum catalyst was synthesized by a simple and novel method and studied for hydrogenation in coal-oil co-processing. The catalyst was characterized by infrared spectrum (IR), thermogravimetry (TG), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The morphology and crystal structure of catalyst was characterized with scanning electron microscope (SEM) and high resolution transmission electron microscopy (HRTEM). The catalyst can be considered as a precursor that can be converted into active MoS2 components through thermal decomposition and sulfidation. The hydrogenation experiment was carried out by the model reactants of tetradecane and 2-methylnaphthalene with a change of reaction (405℃-445℃) temperature and concentrations of molybdenum catalyst (Mo conc. 0.6-10 mg/g), and results showed that the delightly hydrogenation function of catalyst is to improve the saturation of aromatic ring. The most abundant stacking numbers of decomposed catalyst were 2 and 3, accounting for 53% of all catalyst microcrystalline units. The rapid hydrogenation stage and the significant decrease of feed heavy fraction in co-processing experiment provided the evidence that the hydrogenation performance of the synthesized catalyst is remarkable in coal-oil co-processing.

show abstract

“…Dispersed catalysts, both preliminarily synthesized with the use of supports (ex situ) and in situ formed from water-soluble or oil-soluble metal compounds in the reaction medium, are successfully used in slurry hydroprocesses [17,[33][34][35][36][37][38][39][40][41][42].…”

Section: Introductionmentioning

confidence: 99%

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

Knyazeva

Maximov

2018

Catalysts

View full text Add to dashboard Cite

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.

show abstract

Promotion effects with dispersed catalysts for residue slurry hydroconversion

Cited by 40 publications

References 28 publications

Study of NiMoS mixed phase from catalyst precursors in residue slurry-bed hydrocracking

Study of NiMoS mixed phase from catalyst precursors in residue slurry-bed hydrocracking

Study on Hydrogenation Performance of Oil-Soluble Molybdenum Catalyst in Coal-Oil Co-Processing

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

Contact Info

Product

Resources

About