Synergistic effect of nickel nanoparticles with tetralin on the rheology and upgradation of extra heavy oil

Jadhav, Rohan M.; Kumar, G. Suresh; Balasubramanian, N.; Sangwai, Jitendra S.

doi:10.1016/j.fuel.2021.122035

Cited by 10 publications

(3 citation statements)

References 69 publications

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“…Catalytic aquathermolysis promoted a significant increase in saturated hydrocarbons (up to ∼75% relative to the heavy crude oil), probably due to the conversion of asphaltenes (>30%). The authors ,,,,,− , referred to the cleavage of heteroatomic bonds (such as C–S) of large molecules of resins and asphaltenes, resulting in their conversion into smaller molecular fragments.…”

Section: Resultsmentioning

confidence: 99%

“…The efficacy of aquathermolysis in altering the properties of crude oil varies significantly with the choice and type of used catalytic systems. − During in situ catalytic upgrading, a precursor to the catalyst is introduced directly into the oil reservoir to facilitate the in situ upgrading process. This precursor undergoes modifications under reservoir conditions, transforming into an active form of the injected catalysts. , The active phase typically formed depending on the metals used (such as transition based: Mo, Co, Ni, V, and Fe) and their compounds.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Application of a Ni-Based Dispersed Catalyst for Hydrothermal Upgrading of Heavy Crude Oil

Khamieva,

Al-Muntaser,

Suwaid

et al. 2024

Energy Fuels

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In this work, the catalytic performance of a synthesized dispersed Ni-based catalyst [amorphous catalytic system of Ni(NO 3 )(OH)] in the hydrothermal upgrading of high-sulfur Cuban extra-heavy oil at temperatures of 200 and 300 °C for a duration of 24 h was evaluated. The synthesized Ni-catalyst predominantly exhibits an amorphous structure, which is primarily attributed to nickel hydroxonitrate (Ni(OH)(NO 3 )), as verified through X-ray diffraction and thermogravimetric Fourier transform infrared analyses. The results show that the presence of the synthesized catalyst in the upgrading system improves the physical and chemical properties of the upgraded oil samples compared to non-catalytic aquathermolysis results. The application of the Ni-based catalyst resulted in a reduction of sulfur content by 9.0−17.4%, a decrease in viscosity by 11.4−11.7%, and a lowering of the heavy oil fraction by 6.8−8.3%. Additionally, there was an increment in the production of gases by 0.2−0.3% and an increase in the fraction of hydrocarbons with a carbon number of less than < C 20 by 5.4−8.2%. The best upgrading performance was observed during catalytic aquathermolysis at 300 °C. Overall, the findings underscore the synthesized Ni-based catalyst's potential to significantly enhance the in situ hydrothermal upgrading process of extra-heavy crude oil, offering a promising approach for the treatment of such challenging feedstocks.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and Application of a Ni-Based Dispersed Catalyst for Hydrothermal Upgrading of Heavy Crude Oil

Khamieva,

Al-Muntaser,

Suwaid

et al. 2024

Energy Fuels

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show abstract

“…The traditional dearomatic technology adopts hydrorefining, , which reduces the density of diesel through selective ring opening and saturates the aromatic hydrocarbons through hydrogenation, thus achieving the purpose of increasing the hexadecane number of diesel . However, this method involves high investment, complex process, and high energy consumption .…”

Section: Introductionmentioning

confidence: 99%

Extraction and Separation of Polycyclic Aromatic Hydrocarbons from Catalytic Cracking Diesel

Zhang

Tang

et al. 2023

J. Chem. Eng. Data

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The content of polycyclic aromatic hydrocarbons (PAHs) in catalytic cracking diesel is up to 40−70 wt %. It is economical and highly desirable to extract PAHs from catalytic cracking diesel, which helps to solve the problem of diesel oversupply and aromatic insufficiency in China. In this study, liquid−liquid extraction of PAHs with tetramethylene sulfone (i.e., sulfolane) as the extractant is carried out under atmospheric pressure and low temperature. First, the effect of an extractant on the selectivity and distribution coefficient of aromatic hydrocarbons is investigated, and sulfolane is chosen as the extractant. The correlation between the extraction performance of the extractant and its physical parameters is studied. The results show that the greater the difference of the polar force parameters between the aromatics and the extractant, the higher is the selectivity of the extractant for aromatics. The dipole moment difference between the extractant and aromatic mixture is less than that between the extractant and raffinate, so the solubility of the extractant compared to that of the aromatic mixture is better. Under the optimal extraction conditions (sulfolane/catalytic diesel volume ratio, 1.4; extraction temperature, 46 °C; extraction time, 5 min; and phase separation time, 5.5 min) and aromatic recovery conditions (water/(sulfolane + aromatic hydrocarbon) volume ratio, 0.8; extraction temperature, 50 °C; extraction time, 4 min; and phase separation time, 5 min), the quality yield of aromatic products is 29.87 wt %, and the purity of aromatics is 99.07 wt %. The diesel oil before and after extraction is analyzed by GC−MS. Further, the cetane number increased from 33.13 to 49.06. The regenerated extractant is used to extract aromatic hydrocarbons, and it is recycled five times. The yield of aromatics at each time is >28 wt %, and the aromatic purity is >97 wt %.

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Synthesis and application of amphiphilic copolymer as demulsifier for super heavy oil emulsions

Wang

et al. 2023

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Synergistic effect of nickel nanoparticles with tetralin on the rheology and upgradation of extra heavy oil

Cited by 10 publications

References 69 publications

Synthesis and Application of a Ni-Based Dispersed Catalyst for Hydrothermal Upgrading of Heavy Crude Oil

Synthesis and Application of a Ni-Based Dispersed Catalyst for Hydrothermal Upgrading of Heavy Crude Oil

Extraction and Separation of Polycyclic Aromatic Hydrocarbons from Catalytic Cracking Diesel

Synthesis and application of amphiphilic copolymer as demulsifier for super heavy oil emulsions

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