New Developments in Deep Hydroconversion of Heavy Oil Residues with Dispersed Catalysts. 1. Effect of Metals and Experimental Conditions

Fixari, B.; Peureux, S.; Elmouchnino, Jeanne; Perchec, P. Le; Vrinat, M.; Morel, F.

doi:10.1021/ef00045a012

Cited by 59 publications

(34 citation statements)

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“…Ni and Fe, usually in their sulfides, are often used as catalysts in heavy oil hydrotreatment, too. It is also generally thought that Ni is more active than Fe [48,49]. When hydrocracking of petroleum asphaltene was studied alone, Ni is much more suitable for selective conversion of asphaltene into maltene [50,51].…”

Section: Molecular Structure Of Resin and Asphaltenementioning

confidence: 99%

Aquathermolysis of Heavy Crude Oil with Amphiphilic Nickel and Iron Catalysts

et al. 2014

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Two amphiphilic catalysts (i.e. metal dodecylbenzenesulfonates, noted as C 12 BSNi and C 12 BSFe) were synthesized and characterized by Fourier Transform infrared spectroscopy (FT-IR), element analysis (EA), atomic absorption spectroscopy (AAS) and thermogravimetric (TGA). Their interfacial activities were determined using a surface tensiometer and an interfacial tensiometer. Both catalysts are interfacial active and thermostable enough for heavy oil aquathermolysis. Their performance on heavy oil aquathermolysis was assessed in an autoclave.According to the viscosity reduction results, the synthesized amphiphilic catalysts are more effective than water soluble or oil soluble catalysts, with C 12 BSNi more efficient than C 12 BSFe.The average molecular weight, group compositions, and average molecular structure of heavy oil samples were analyzed using EA, FT-IR, and 1 H nuclear magnetic resonance ( 1 H NMR) before and after aquathermolysis reaction. And the results show that both catalysts caused the change of molecular structures in heavy oil. The change of asphaltene and resin molecular structures and decrease of their contents are crucially important to the reduction of viscosity. C 12 BSNi causes more changes of the asphaltene than C 12 BSFe, while C 12 BSFe is beneficial to the breakage of C-S bonds in asphlatenes and resins.

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Section: Molecular Structure Of Resin and Asphaltenementioning

confidence: 99%

Aquathermolysis of Heavy Crude Oil with Amphiphilic Nickel and Iron Catalysts

et al. 2014

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“…An industrial plant using the slurry technology is at the start up phase (Eni Slurry Technology, 23,000 bpd, Sannazarro, Italy). Slurry technology using dispersed catalysts offers the advantage of an intimate mixing of the catalyst with the feed at low content of the active phase [9,10]. Slurry technologies can provide a solution for the conversion of ''bottom of the barrel'' residue, they are currently considered as the most adapted process for the treatment of the heaviest feedstocks.…”

Section: Introductionmentioning

confidence: 99%

“…Similarly to conventional hydrotreating catalysis, synergistic or cooperative effects might be observed when the precursors of different metals are combined. Thus, NiMo and CoMo combinations have been evaluated starting from Mo, Ni and Co naphtenates [10,14] or phosphonic precursors [11] and slight synergy effects (or almost no effects [7]) were observed noticeably in terms of hydrodesulfurization or hydroconversion. Mo oil soluble precursor combined with a Fe water soluble precursor also exhibited some synergy effects [15].…”

Section: Introductionmentioning

confidence: 99%

Promotion effects with dispersed catalysts for residue slurry hydroconversion

Nguyen

Tayakout‐Fayolle

Lacroix

et al. 2015

Fuel

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“…Originally exploited in the coal hydrogenation industry, it has now been promisingly utilized in upgrading and recycling of heavy fuels in recent years. [1][2][3][4][5][6][7] The slurry phase process is operated in the presence of fine dispersed metal sulfide catalyst in typical amounts from 50 to 1000 ppm, 3 which provides active hydrogen radicals and coke formation center that pull together polymerized asphaltenes and toluene insoluble ingredients. 8,9 Previous literatures 6,10-12 proved that the existence of catalyst is assumed to be functioning in inhibition of coke formation and hydrofining of compounds with heteroatoms such as sulfur, nitrogen and oxygen.…”

Section: Introductionmentioning

confidence: 99%

Hydrogenation Behavior of Bicyclic Aromatic Hydrocarbons in the Presence of a Dispersed Catalyst

Deng

2015

Energy Fuels

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2,6-Diisopropylnaphthalene(2,6-DIPN), 1-Methylnaphthalene(1-MN) andBiphenyl(BP) were selected as model compounds in order to investigate the hydrogenation behavior of bicyclic aromatics. The experiments were conducted in micro-autoclave in the presence of dispersed catalyst at temperature from 380 °C to 430 °C and pressure from 3 MPa to 15 MPa. Through the analysis of the reaction products by gas chromatography-mass spectrum (GC-MS) and gas chromatography (GC), the results revealed that hydrogenation of aromatics can be promoted significantly in the presence of dispersed catalyst. High selectivity towards monocyclic aromatics products was observed in hydrogenation of these model compounds, and its behavior was affected by the presence of substituents and π-conjugated bridge on aromatic ring. The yield of hydro-bicyclic aromatics increased with temperature and hydrogen pressure, while sometimes ring hydrogenation was influenced by thermodynamics properties of aromatics.Reaction pathways for hydrogenation of 2,6-DIPN, 1-MN and BP in the presence of dispersed catalyst were proposed.

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New Developments in Deep Hydroconversion of Heavy Oil Residues with Dispersed Catalysts. 1. Effect of Metals and Experimental Conditions

Cited by 59 publications

References 0 publications

Aquathermolysis of Heavy Crude Oil with Amphiphilic Nickel and Iron Catalysts

Aquathermolysis of Heavy Crude Oil with Amphiphilic Nickel and Iron Catalysts

Promotion effects with dispersed catalysts for residue slurry hydroconversion

Hydrogenation Behavior of Bicyclic Aromatic Hydrocarbons in the Presence of a Dispersed Catalyst

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