Enhanced aquathermolysis of heavy oil catalysed by bentonite supported<scp>Fe(III)</scp>complex in the present of ethanol

Ma, Liwa; Zhang, Shu; Zhang, Xiaolong; Dong, Sanbao; Yu, Tao; Slaný, Michal; Chen, Gang

doi:10.1002/jctb.6997

Cited by 17 publications

(7 citation statements)

References 32 publications

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“…In conclusion, the aquathermolysis reaction offers a viable solution for addressing the challenges posed by paraffin crystal deposition in various industrial applications. Its ability to decompose longer alkane chains and reduce the aggregation tendency of paraffin crystals makes it an effective tool for maintaining the integrity and functionality of flow systems [25,26].…”

Section: Paraffin Crystalsmentioning

confidence: 99%

Water-Soluble Fe(III) Complex Catalyzed Coupling Aquathermolysis of Water-Heavy Oil-Methanol

Chen,

Zhang,

Feng

et al. 2024

Catalysts

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In this experimental study, diverse water-soluble Fe(III) complexes were synthesized and employed to catalyze the aquathermolysis of heavy oil. A ternary reaction system comprising heavy oil, water, and methanol was established to facilitate the process. Viscometry, thermogravimetric analysis, DSC, and elemental analysis were utilized to thoroughly investigate the treated heavy oil. The findings reveal that, under optimal conditions of water, catalyst, and methanol dosage, the viscosity of heavy oil can be significantly reduced by up to 88.22% after reacting at 250 °C for 12 h. Notably, apart from viscosity reduction, the catalytic aquathermolysis also effectively removes heteroatoms such as sulfur, nitrogen, and oxygen, enabling in situ modification and viscosity reduction of heavy oil. This study demonstrates the potential of water-soluble Fe(III) complexes in enhancing the efficiency of heavy oil extraction and processing.

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Section: Paraffin Crystalsmentioning

confidence: 99%

Water-Soluble Fe(III) Complex Catalyzed Coupling Aquathermolysis of Water-Heavy Oil-Methanol

Chen,

Zhang,

Feng

et al. 2024

Catalysts

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“…Hydrogen donors can act on the asphaltene of heavy oil and improve the quality of heavy oil. Under the condition of high temperature and high pressure, the hydrogen donor can produce active hydrogen and react with active radical fragments to prevent the reverse combination of free radicals and the formation of coke [28,29]. The action mechanism is shown in Figure 10.…”

Section: Mechanismmentioning

confidence: 99%

Methanol-Enhanced Fe(III) Oleate-Catalyzed Aquathermolysis of Heavy Oil

Guo

et al. 2022

Processes

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Fe(III) oleate (Fe(III)L) has been used in heavy oil aquathermolysis as catalysts, but the effect of the hydrogen donor on this reaction has not been considered. In this paper, we introduce methanol as the hydrogen donor in the Fe(III)L-catalyzed aquathermolysis to investigate the promotion effect of methanol on the aquathermolysis. The results show that the addition of methanol can increase the viscosity reduction rate of aquathermolysis from 81.81% to 91.23%. The heavy oil samples before and after aquathermolysis were characterized by thermogravimetric (TGA), differential scanning calorimetry (DSC), elemental analysis (EA), and carbon number distribution to investigate the changes in physical and chemical properties and explore the mechanism of methanol as a hydrogen promoter. There was a significant decrease in asphaltene and resin in the oil sample subjected to the reaction after the addition of methanol; the wax precipitation point decreased from 38 °C to 31 °C; the S element content decreased by 1% and the C element content increased by 4%; the content of light saturated HC (less than C10) increased and the content of saturated HC with more than C10 decreased. It shows that the addition of methanol, which provides a large amount of active hydrogen, promotes the breakage of long-chain alkanes in heavy oil, the light component content increase, promotes the breakage of C–C and C–S bonds during the reaction, making the content of heteroatoms decrease, increases the viscosity reduction rate, and improves the fluidity of oil samples. The findings of this study can help for better understanding of the mechanism of methanol in aquathermolysis and facilitate the exploration and exploitation of heavy oil.

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“…Different catalysts such as the Gemini catalyst [ 14 ], metal oxide nanoparticles [ 15 ], aromatic sulfonate catalysts [ 8 ], phosphonate catalysts, and ionic liquids [ 16 ] were investigated for the catalytic aquathermolysis of heavy crude oil [ 13 , 15 ]. Metal oxides, especially iron and copper oxides, as potential catalysts for the processes of heavy oil cracking, showed high efficiency during heavy oil aquathermolysis at different temperatures [ 17 ]. Bentonite (clay) complex catalysts showed appealing alternative polymer degradation in oil-field wastewater within a wide PH range.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Experiments on the In Situ Upgrading of Heavy Crude Oil Using Catalytic Aquathermolysis by Acidic Ionic Liquid

2022

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Heavy and extra heavy oil exploitation has attracted attention in the last few years because of the decline in the production of conventional crude oil. The high viscosity of heavy crude oil is the main challenge that obstructs its extraction. Consequently, catalytic aquathermolysis may be an effective solution to upgrade heavy crude oil to decrease its viscosity in reservoir conditions. In this regard, a series of acidic ionic liquids, 1-butyl-1H-imidazol-3-ium 4-dodecylbenzenesulfonate (IL-4), 1-decyl-1H-imidazol-3-ium 4-dodecylbenzenesulfonate (IL-10), and 1-hexadecyl-1H-imidazol-3-ium 4-dodecylbenzenesulfonate (IL-16), were utilized in the aquathermolysis of heavy crude oil. Of each IL, 0.09 wt % reduced the viscosity of the crude oil by 89%, 93.7%, and 94.3%, respectively, after the addition of 30% water at 175 °C. ILs with alkyl chains equal to 10 carbon atoms or more displayed greater activity in viscosity reduction than that of ILs with alkyl chains lower than 10 carbon atoms. The molecular weight and asphaltene content of the crude oil were decreased after catalytic aquathermolysis. The compositional analysis of the crude oil before and after catalytic aquathermolysis showed that the molar percentage of lighter molecules from tridecanes to isosanes was increased by 26–45%, while heavier molecules such as heptatriacontanes, octatriacontanes, nonatriacontanes, and tetracontanes disappeared. The rheological behavior of the crude oil before and after the catalytic aquathermolytic process was studied, and the viscosity of the crude oil sample was reduced strongly from 678, 29.7, and 23.4 cp to 71.8, 16.9, and 2.7 cp at 25, 50, and 75 °C, respectively. The used ILs upgraded the heavy crude oil at a relatively low temperature.

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Enhanced aquathermolysis of heavy oil catalysed by bentonite supportedFe(III)complex in the present of ethanol

Cited by 17 publications

References 32 publications

Water-Soluble Fe(III) Complex Catalyzed Coupling Aquathermolysis of Water-Heavy Oil-Methanol

Water-Soluble Fe(III) Complex Catalyzed Coupling Aquathermolysis of Water-Heavy Oil-Methanol

Methanol-Enhanced Fe(III) Oleate-Catalyzed Aquathermolysis of Heavy Oil

Laboratory Experiments on the In Situ Upgrading of Heavy Crude Oil Using Catalytic Aquathermolysis by Acidic Ionic Liquid

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