Advances on the transition-metal based catalysts for aquathermolysis upgrading of heavy crude oil

Li, Chen; Huang, Weicheng; Zhou, Chenggang; Chen, Yanling

doi:10.1016/j.fuel.2019.115779

Cited by 90 publications

(49 citation statements)

References 138 publications

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“…Some preliminary works were carried out several years ago to study the real causes of combustion flame front instability using various catalysts such as transition metal (TM)-based compounds, metal oxides, water-soluble metals, oil-soluble metals, and minerals such as clay. − It is worthwhile noting that TMs and their oxides have received much attention for thermal EOR due to their high capacity for adsorption and activation of oxygen, as well as their contribution to the propagation steps to regenerate more free radicals during oxidation processes. In addition, their high heat transfer coefficient can increase the efficiency of thermal oil recovery processes . Recent findings regarding metal nanoparticles have led to the discovery of their significant role in promoting the thermal recovery of heavy oil. , In their investigation of the impact of copper nanoparticles on the ISC process of heavy crude oil, Amanam et al have shown that copper nanoparticles have a significant influence on the apparent activation energy of the HTO region and the fuel formation zone .…”

Section: Introductionmentioning

confidence: 89%

“…Generally, TM carboxylates including alkyl carboxylates (or mixtures thereof), oleates, and naphthenates can serve as excellent catalysts compared to water-insoluble inorganic salts to reduce the viscosity of heavy oils. − Another reason for the efficiency of oil-soluble TM carboxylates is the proper dispersion in heavy oil, which prevents coke formation and allows for more efficient interaction with oil components . The literature reveals that the use of oil-soluble organic ligands in ISC can increase the lipophilic nature of the catalysts (improve solubility in oil), bring TM to the surface, and even the internal phase of the heavy oil . Khelkhal et al showed an acceptable effect of copper-manganese tallates in stabilizing the combustion flame front during oxidation reactions at high temperatures by means of thermal analysis .…”

Section: Introductionmentioning

confidence: 98%

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Effect of Ligand Structure on the Kinetics of Heavy Oil Oxidation: Toward Biobased Oil-Soluble Catalytic Systems for Enhanced Oil Recovery

Farhadian

Khelkhal

Tajik

et al. 2021

Ind. Eng. Chem. Res.

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In recent years, protection of the environment from activities associated with enhanced oil recovery has been considered a crucial priority for decision-makers in the international community. The in situ combustion process as a promising thermal enhanced oil recovery method has been attracting considerable interest in terms of improving oil production and environmental protection. However, this technique is not yet well studied. This paper outlines a new approach to improve the process of heavy oil oxidation by designing new biobased oil-soluble catalysts that are able to maintain and stabilize the combustion flame front of the in situ combustion process. A comprehensive theoretical and experimental study including thermal analysis (thermogravimetry/differential scanning calorimetry, TG/DSC) and quantum calculations was used to shed light on the effect of the ligand structure in the oil-soluble catalytic system on the heavy oil oxidation process. The obtained accurate results proved that metal interaction with the designed ligands increased, which led to a decrease in the energy of activation and an increase in the heavy oil oxidation reaction rate. Besides, the obtained DSC curves showed one peak in the presence of Cu and biobased ligands, contrary to the curves obtained for heavy oil oxidation reported with other ligands and metals. In other words, the obtained catalysts merged low-temperature-and high-temperature oxidation regions into one region. These findings reveal that the structure of ligands can significantly affect their interaction with metals in oil-soluble catalysts, and therefore the efficiency of catalysts is dramatically improved. We believe that our work could be usefully employed for further studies to clarify the mechanism of the in situ combustion behavior of heavy oil for a better impact on the environment.

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Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 98%

Effect of Ligand Structure on the Kinetics of Heavy Oil Oxidation: Toward Biobased Oil-Soluble Catalytic Systems for Enhanced Oil Recovery

Farhadian

Khelkhal

Tajik

et al. 2021

Ind. Eng. Chem. Res.

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“…The most widely applied catalysts are heterogeneous catalysts based on transition metals, oxide, sulfide, carbide and phosphide nanoparticles, as well as metalized solid acids [36][37][38]. The possible approaches to apply the nanoparticles in various heavy oil production technologies were evaluated in a review article [39].…”

Section: Nanocatalystsmentioning

confidence: 99%

In-Situ Heavy Oil Aquathermolysis in the Presence of Nanodispersed Catalysts Based on Transition Metals

et al. 2021

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The aquathermolysis process is widely considered to be one of the most promising approaches of in-situ upgrading of heavy oil. It is well known that introduction of metal ions speeds up the aquathermolysis reactions. There are several types of catalysts such as dispersed (heterogeneous), water-soluble and oil soluble catalysts, among which oil-soluble catalysts are attracting considerable interest in terms of efficiency and industrial scale implementation. However, the rock minerals of reservoir rocks behave like catalysts; their influence is small in contrast to the introduced metal ions. It is believed that catalytic aquathermolysis process initiates with the destruction of C-S bonds, which are very heat-sensitive and behave like a trigger for the following reactions such as ring opening, hydrogenation, reforming, water–gas shift and desulfurization reactions. Hence, the asphaltenes are hydrocracked and the viscosity of heavy oil is reduced significantly. Application of different hydrogen donors in combination with catalysts (catalytic complexes) provides a synergetic effect on viscosity reduction. The use of catalytic complexes in pilot and field tests showed the heavy oil viscosity reduction, increase in the content of light hydrocarbons and decrease in heavy fractions, as well as sulfur content. Hence, the catalytic aquathermolysis process as a distinct process can be applied as a successful method to enhance oil recovery. The objective of this study is to review all previously published lab scale and pilot experimental data, various reaction schemes and field observations on the in-situ catalytic aquathermolysis process.

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“…Because the desulfurization and denitrogenation processes the elemental content of sulfur and nitrogen was decreased. The desulfurization and denitrogenation process occurs during upgrading reaction with catalysts due to the presence of Fe 3+ , Co 2+ and Ni 2+ ions in catalysts that catalyze the cleavage of the C−S and C−N bonds compare to hydrothermal cracking without catalysts (Li et al 2019). The bonds energy of C−S and C−N are 272 and 305 kJ/mole, respectively, weaker than C−C bond which have 346 kJ/mole, that able to cleavage C−S and C−N bonds more easily (Anugwom et al 2011;Dharaskar et al 2014;Tang et al 2017).…”

Section: Elemental Analysis Desulfurization and Denitrogenation Of Oil Samples During Thermal Upgrading Processmentioning

confidence: 99%

Intensification of the steam stimulation process using bimetallic oxide catalysts of MFe2O4 (M = Cu, Co, Ni) for in-situ upgrading and recovery of heavy oil

Al-Rubaye¹,

Suwaid

Al‐Muntaser

et al. 2021

J Petrol Explor Prod Technol

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In this study, bimetallic catalysts based on transition metals CuFe2O4, CoFe2O4 and NiFe2O4 are proposed for catalyzing aquathermolysis reaction during steam-based EOR method to improve in-situ heavy oil upgrading. All upgrading experiments were carried out under a nitrogen atmosphere for 24 h in a 300-ml batch Parr reactor at 250 and 300 °C under high pressure 35 and 75 bar, respectively. To evaluate the catalytic performance of the bimetallic catalysts used, comprehensive studies of changes in the physical and chemical properties of the improved oils, including the viscosity, elemental composition and SARA fractions of oils before and after upgrading processes were used. Furthermore, individual SARA fractions were characterized in detail by Gas Chromatography (GC), High-Performance Liquid Chromatography (HPLC) and Carbon-13 Nuclear Magnetic Resonance (13C NMR), respectively. The results showed that bimetallic catalysts have high catalytic performance at 300 °C for the upgrading of heavy crude oil in viscosity reduction, increasing the amount of saturates (especially alkanes with low carbon number) as a result of thermal decompositions of high molecular weight compounds like resin and asphaltenes leading to their increasing. Furthermore, the upgrading performance is reflected in the improvement of the H/C ratio, the removal of sulfur and nitrogen through desulfurization and denitrogenation procedures, and the reduction in polyaromatic content, etc. CoFe2O4 gives the best performance. Generally, it can be concluded that, used bimetallic based catalysts can be considered as promising and potential additives improving in-situ upgrading and thermal conversion the heavy oils.

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Advances on the transition-metal based catalysts for aquathermolysis upgrading of heavy crude oil

Cited by 90 publications

References 138 publications

Effect of Ligand Structure on the Kinetics of Heavy Oil Oxidation: Toward Biobased Oil-Soluble Catalytic Systems for Enhanced Oil Recovery

Effect of Ligand Structure on the Kinetics of Heavy Oil Oxidation: Toward Biobased Oil-Soluble Catalytic Systems for Enhanced Oil Recovery

In-Situ Heavy Oil Aquathermolysis in the Presence of Nanodispersed Catalysts Based on Transition Metals

Intensification of the steam stimulation process using bimetallic oxide catalysts of MFe2O4 (M = Cu, Co, Ni) for in-situ upgrading and recovery of heavy oil

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