1
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Kou X, Hong M, Pan F, Huang X, Meng Q, Zhang Y, Ke Q. Inhibitory effects of nobiletin-mediated interfacial instability of bile salt emulsified oil droplets on lipid digestion. Food Chem 2024; 444:138751. [PMID: 38412567 DOI: 10.1016/j.foodchem.2024.138751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 01/04/2024] [Accepted: 02/12/2024] [Indexed: 02/29/2024]
Abstract
Previous lipase inhibitors studies mainly focus on the binding between inhibitors and lipase, ignoring the impact of inhibitors on the oil-water interface of lipid droplets. This study aimed to investigate the effect of nobiletin (NBT) from Citri Reticulatae Pericarpium on the oil-water interface properties and lipid digestion. Here, we found that NBT could destroy bile salt (BS)-stabilized lipid droplets and thus inhibited free fatty acid release, owing to the interaction between NBT and BS at the oil-water interface, and reducing the stability of the oil-water interface (the stability index decreased from 91.15 ± 2.6 % to 66.5 ± 3.6 %). Further, the molecular dynamics simulation and isothermal titration calorimetry revealed that NBT could combine with BS at oil-water interface through intermolecular interactions, including hydrogen bonds, Van der Waals force, and steric hindrance. These results suggest that the interfacial instability of NBT mediated BS emulsified oil droplets may be another pathway to inhibit lipid digestion.
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Affiliation(s)
- Xingran Kou
- Collaborative Innovation Center of Fragrance Flavour and Cosmetics, School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, PR China
| | - Min Hong
- Collaborative Innovation Center of Fragrance Flavour and Cosmetics, School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, PR China
| | - Fei Pan
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, PR China
| | - Xin Huang
- Collaborative Innovation Center of Fragrance Flavour and Cosmetics, School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, PR China.
| | - Qingran Meng
- Collaborative Innovation Center of Fragrance Flavour and Cosmetics, School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, PR China
| | - Yunchong Zhang
- Collaborative Innovation Center of Fragrance Flavour and Cosmetics, School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, PR China
| | - Qinfei Ke
- Collaborative Innovation Center of Fragrance Flavour and Cosmetics, School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, PR China.
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2
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Wang W, Sheng F, Ou G, Zhao Y, Sun G. Adsorption of Asphaltenes at Model Oil/Brine Interface: Influence of Solvent Polarity. ACS OMEGA 2024; 9:19879-19891. [PMID: 38737055 PMCID: PMC11080033 DOI: 10.1021/acsomega.3c09091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 02/15/2024] [Accepted: 04/15/2024] [Indexed: 05/14/2024]
Abstract
With the exploitation of heavy oil worldwide, the influence of asphaltene aggregation in the oil phase on the stability of crude oil emulsion has been paid more and more attention. Under this background, the effects of solvent polarity on model oil/brine water interfacial properties and emulsion stability are investigated in this study. It is demonstrated that there is a critical asphaltene concentration for the formation of a stable emulsion. This critical concentration is then found to increase from 80 to 500 ppm with the mixing ratio of methylnaphthalene to n-decane changed from 2:3 to 7:3. The dynamic light scattering experiment shows that the average aggregate size increases abruptly from 132.8 to 261.1 nm at 2:3 mixing ratio of methylnaphthalene to n-decane once the asphaltenes are added to above the critical concentration. Accordingly, the diffusion coefficient of the asphaltenes decreases sharply from 4.36 × 10-12 to 5.68 × 10-13 m2/s. Similar conclusions are also found for the other mixing ratios of 1:1, 3:2, and 7:3. Besides, the aggregation degree of asphaltenes weakens, and the diffusion coefficient enlarges at the same asphaltene concentration with the enhancement of the solvent polarity. Further, the interfacial experiments manifest that the equilibrium interfacial dilation modulus decreases from 38.42 to 23.65 mN/m with the mixing ratio of methylnaphthalene to n-decane increased from 2:3 to 7:3. It can thus be inferred that the structural strength of the interfacial film decreases with the enhancement of the solvent polarity.
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Affiliation(s)
- Wei Wang
- Sinopec
Petroleum Engineering Corporation, Dongying, Shandong 257026, People’s Republic of China
| | - Fujun Sheng
- College
of Pipeline & Civil Engineering, China
University of Petroleum (East China), Qingdao, Shandong 266580, People’s Republic
of China
| | - Guifang Ou
- CNOOC
Offshore Oil Engineering (Qing Dao) Co., Ltd., Qingdao, Shandong 266520, People’s Republic
of China
| | - Yansong Zhao
- Department
of Safety, Chemistry and Biomedical Laboratory Sciences, Western Norway University of Applied Sciences (HVL), 5063 Bergen, Norway
| | - Guangyu Sun
- College
of Pipeline & Civil Engineering, China
University of Petroleum (East China), Qingdao, Shandong 266580, People’s Republic
of China
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3
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Yu P, Liu X, Zhu H, Dou R, Zeng S, Zhou N, Lei Y. Simulation Investigation on the Influence Mechanism of Toluene and Heptane on the Aggregation of Asphaltene Molecules. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:16374-16384. [PMID: 37939383 DOI: 10.1021/acs.langmuir.3c02120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Asphaltenes are a group of compounds that are soluble in benzene and toluene but insoluble in nonpolar small molecule n-alkanes. The asphaltene aggregation in the asphaltene-heptane-toluene system was studied using molecular dynamics (MD) simulation, and the interaction between asphaltene molecules during this process was also revealed from the evolution of the density field, radial distribution function (RDF), and intermolecular distance of asphaltenes. Three main findings were made: (1) more asphaltene precipitates (heptane) were contained, and more asphaltene dimers or trimers were formed during the MD simulation; (2) asphaltene molecules interacted with each other to form aggregates in the form of π-π or H-bond interaction. The stable distance of the π-π interaction was 3.3-3.5 Å, and the stable distance of the H-bond connection was 1.7-1.9 Å. (3) The asphaltene interaction in the heptane-rich system was dominated by π-π interaction between asphaltene molecules. However, the asphaltene interactions in the toluene-rich system were mainly the π-π interaction between asphaltene molecules and toluene and the H-bond interaction between the side chains of asphaltene molecules. The results of this study can aid in understanding how asphaltene molecules aggregate and self-associate and can also offer theoretical support for flow assurance in systems used to produce crude oil.
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Affiliation(s)
- Pengfei Yu
- Jiangsu Key Laboratory of Oil and Gas Storage & Transportation Technology, Changzhou University, Jiangsu 213164, China
| | - Xueqian Liu
- Jiangsu Key Laboratory of Oil and Gas Storage & Transportation Technology, Changzhou University, Jiangsu 213164, China
| | - Haoran Zhu
- Jiangsu Key Laboratory of Oil and Gas Storage & Transportation Technology, Changzhou University, Jiangsu 213164, China
| | - Rui Dou
- Jiangsu Key Laboratory of Oil and Gas Storage & Transportation Technology, Changzhou University, Jiangsu 213164, China
| | - Shaoliang Zeng
- Jiangsu Key Laboratory of Oil and Gas Storage & Transportation Technology, Changzhou University, Jiangsu 213164, China
| | - Nianyong Zhou
- Jiangsu Key Laboratory of Oil and Gas Storage & Transportation Technology, Changzhou University, Jiangsu 213164, China
| | - Yun Lei
- Jiangsu Key Laboratory of Oil and Gas Storage & Transportation Technology, Changzhou University, Jiangsu 213164, China
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4
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Xia X, Ma J, Liu F, Cong H, Li X. A Novel Demulsifier with Strong Hydrogen Bonding for Effective Breaking of Water-in-Heavy Oil Emulsions. Int J Mol Sci 2023; 24:14805. [PMID: 37834251 PMCID: PMC10573199 DOI: 10.3390/ijms241914805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/27/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
In the heavy petroleum industry, the development of efficient demulsifiers for the effective breaking of interfacially active asphaltenes (IAA)-stabilized water-in-heavy oil (W/HO) emulsions is a highly attractive but challenging goal. Herein, a novel nitrogen and oxygen containing demulsifier (JXGZ) with strong hydrogen bonding has been successfully synthesized through combining esterification, polymerization and amidation. Bottle tests indicated that JXGZ is effectual in quickly demulsifying the IAA-stabilized W/HO emulsions; complete dehydration (100%) to the emulsions could be achieved in 4 min at 55 °C using 400 ppm of JXGZ. In addition, the effects of demulsifier concentration, temperature and time on the demulsification performance of JXGZ are systematically analyzed. Demulsification mechanisms reveal that the excellent demulsification performance of JXGZ is attributed to the strong hydrogen bonding between JXGZ and water molecules (dual swords synergistic effect under hydrogen bond reconstruction). The interaction of the "dual swords synergistic effect" generated by two types of hydrogen bonds can quickly break the non-covalent interaction force (π-π stacking, Van der Waals force, hydrogen bonds) of IAA at the heavy oil-water interface, quickly promote the aggregation and coalescence of water molecules and finally achieve the demulsification of W/HO emulsions. These findings indicate that the JXGZ demulsifier shows engineering application prospects in the demulsification of heavy oil-water emulsions, and this work provides the key information for developing more efficient chemical demulsifiers suitable for large-scale industrial applications.
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Affiliation(s)
- Xiao Xia
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China; (X.X.); (F.L.)
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
| | - Jun Ma
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China; (X.X.); (F.L.)
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
| | - Fei Liu
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China; (X.X.); (F.L.)
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
| | - Haifeng Cong
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; (H.C.); (X.L.)
- Zhejiang Institute of Tianjin University, Ningbo 315201, China
| | - Xingang Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; (H.C.); (X.L.)
- Zhejiang Institute of Tianjin University, Ningbo 315201, China
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5
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Yang Y, Liang X, Li X. Investigation of clay-oil interfacial interactions in petroleum-contaminated soil: Effect of crude oil composition. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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6
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Niu H, Wang W, Dou Z, Chen X, Chen X, Chen H, Fu X. Multiscale combined techniques for evaluating emulsion stability: A critical review. Adv Colloid Interface Sci 2023; 311:102813. [PMID: 36403408 DOI: 10.1016/j.cis.2022.102813] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/09/2022] [Accepted: 11/10/2022] [Indexed: 11/17/2022]
Abstract
Emulsions are multiscale and thermodynamically unstable systems which will undergo various unstable processes over time. The behavior of emulsifier molecules at the oil-water interface and the properties of the interfacial film are very important to the stability of the emulsion. In this paper, we mainly discussed the instability phenomena and mechanisms of emulsions, the effects of interfacial films on the long-term stability of emulsions and summarized a set of systematic multiscale combined methods for studying emulsion stability, including droplet size and distribution, zeta-potential, the continuous phase viscosity, adsorption mass and thickness of the interfacial film, interfacial dilatational rheology, interfacial shear rheology, particle tracking microrheology, visualization technologies of the interfacial film, molecular dynamics simulation and the quantitative evaluation methods of emulsion stability. This review provides the latest research progress and a set of systematic multiscale combined techniques and methods for researchers who are committed to the study of oil-water interface and emulsion stability. In addition, this review has important guiding significances for designing and customizing interfacial films with different properties, so as to obtain emulsion-based delivery systems with varying stability, oil digestibility and bioactive substance utilization.
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Affiliation(s)
- Hui Niu
- Hainan University-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 People Road, Haikou 570228, PR China; SCUT-Zhuhai Institute of Modern Industrial Innovation, School of Food Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510640, PR China
| | - Wenduo Wang
- School of Food Science and Technology, Guangdong Ocean University, Yangjiang 529500, Guangdong, PR China
| | - Zuman Dou
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, PR China
| | - Xianwei Chen
- SCUT-Zhuhai Institute of Modern Industrial Innovation, School of Food Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510640, PR China
| | - Xianxiang Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China
| | - Haiming Chen
- Hainan University-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 People Road, Haikou 570228, PR China; Maritime Academy, Hainan Vocational University of Science and Technology, 18 Qiongshan Road, Haikou 571126, PR China.
| | - Xiong Fu
- SCUT-Zhuhai Institute of Modern Industrial Innovation, School of Food Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510640, PR China; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510640, PR China; Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou, PR China.
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7
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Quercetin: Its Antioxidant Mechanism, Antibacterial Properties and Potential Application in Prevention and Control of Toxipathy. Molecules 2022; 27:molecules27196545. [PMID: 36235082 PMCID: PMC9571766 DOI: 10.3390/molecules27196545] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 09/28/2022] [Accepted: 09/28/2022] [Indexed: 11/30/2022] Open
Abstract
Quercetin, as a flavonol compound found in plants, has a variety of biological activities. It is widely present in nature and the human diet, with powerful oxidative properties and biological activities. In this review, the antioxidant mechanism and broad-spectrum antibacterial properties of quercetin are revealed; the intervention effects of quercetin on pesticide poisoning and the pathway of action are investigated; the toxic effects of main mycotoxins on the collection and the detoxification process of quercetin are summarized; whether it is able to reduce the toxicity of mycotoxins is proved; and the harmful effects of heavy metal poisoning on the collection, the prevention, and control of quercetin are evaluated. This review is expected to enrich the understanding of the properties of quercetin and promote its better application in clinical practice.
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8
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Zhai R, Ma J, An Y, Wen Z, Liu Y, Sun Q, Xie P, Zhao S. Ultra-stable Linalool/water Pickering Emulsions: A Combined Experimental and Simulation Study. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Ma J, Xiao P, Wang P, Han X, Luo J, Shi R, Wang X, Song X, Zhao S. Molecular Dynamics Simulation Study on π-π Stacking of Gemini Surfactants in Oil/Water Systems. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2022.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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11
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Sun H, Li X, Liu D, Li X. Synergetic adsorption of asphaltenes and oil displacement surfactants on the oil-water interface: Insights on stabilization mechanism of the interfacial film. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2021.116850] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Gorbacheva SN, Ilyin SO. Structure, rheology and possible application of water-in-oil emulsions stabilized by asphaltenes. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126442] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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13
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Lan T, Liu J, Zeng H, Tang T. Temperature-Induced Transition from Indirect to Direct Adsorption of Polycyclic Aromatic Hydrocarbons on Quartz: A Combined Theoretical and Experimental Study. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02412] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tu Lan
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
- Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, P. R. China
| | - Jing Liu
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Tian Tang
- Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
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14
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Ahmadi M, Hou Q, Wang Y, Chen Z. Interfacial and molecular interactions between fractions of heavy oil and surfactants in porous media: Comprehensive review. Adv Colloid Interface Sci 2020; 283:102242. [PMID: 32858410 DOI: 10.1016/j.cis.2020.102242] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 08/13/2020] [Accepted: 08/14/2020] [Indexed: 02/02/2023]
Abstract
The oil production by the natural energy in oil reservoirs is decreasing gradually. Only 25-30% of the world's reservoirs can be produced naturally, and different methods are employed to recover the remaining oil. The use of surfactants is one of the promising methods for unlocking the residual oil after natural depletion. In such a method, one of the main challenges is to study how surfactant, oil, and water interact and how porous media affect these interactions. Molecular dynamics (MD) simulation provides an opportunity to gain insights into this challenge. MD simulation can be used to study interactions between surfactant, oil, and water statically and dynamically in porous media. This paper presents a comprehensive review of interactions between surfactants and fractions of oil/heavy oil, including asphaltene, resin, aromatics, and saturates. Also, it explains the probable mechanisms of oil detachment from reservoir rock in the presence of surfactants. A thorough grasp of molecular interactions between surface-active agents and different fractions of oil helps us to develop successful surfactant-based oil recovery methods.
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15
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Liu J, Li X, Liu J, Liao X, Liu F, Ren S. Molecular level separation of crude oil/water emulsion on carbon nanotube surface induced by weak interaction: a molecular dynamic simulation study. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1645026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Juan Liu
- Jiangxi Key Laboratory of Mining Engineering, School of Resources and Environmental Engineering, Jiangxi University of Science and Technology , Ganzhou , P. R. China
- School of Chemical Engineering and Materials, Changzhou Institute of Technology , Changzhou , P. R. China
| | - Xiaocheng Li
- School of Materials and Chemical Engineering, Jiangxi University of Science and Technology , Ganzhou , P. R. China
| | - Jun Liu
- Jiangxi Key Laboratory of Mining Engineering, School of Resources and Environmental Engineering, Jiangxi University of Science and Technology , Ganzhou , P. R. China
| | - Xiaofeng Liao
- Jiangxi Key Laboratory of Mining Engineering, School of Resources and Environmental Engineering, Jiangxi University of Science and Technology , Ganzhou , P. R. China
| | - Fuyan Liu
- School of Chemical Engineering and Materials, Changzhou Institute of Technology , Changzhou , P. R. China
| | - Sili Ren
- Jiangxi Key Laboratory of Mining Engineering, School of Resources and Environmental Engineering, Jiangxi University of Science and Technology , Ganzhou , P. R. China
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16
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Dunn NJH, Gutama B, Noid WG. Simple Simulation Model for Exploring the Effects of Solvent and Structure on Asphaltene Aggregation. J Phys Chem B 2019; 123:6111-6122. [DOI: 10.1021/acs.jpcb.9b04275] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nicholas J. H. Dunn
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Besha Gutama
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - W. G. Noid
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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17
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Separation of water–oil mixture on poly methyl methacrylate surface using TiO2 nanoparticles via molecular dynamics simulation. ADSORPTION 2019. [DOI: 10.1007/s10450-019-00119-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Xue X, Wang W, Fan H, Xu Z, Pedruzzi I, Li P, Yu J. Adsorption behavior of oxalic acid at water–feldspar interface: experiments and molecular simulation. ADSORPTION 2019. [DOI: 10.1007/s10450-019-00111-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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19
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Li X, Hou J, Sui H, Sun L, Xu L. Switchable-Hydrophilicity Triethylamine: Formation and Synergistic Effects of Asphaltenes in Stabilizing Emulsions Droplets. MATERIALS 2018; 11:ma11122431. [PMID: 30513618 DOI: 10.3390/ma11122431] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 11/28/2018] [Accepted: 11/29/2018] [Indexed: 11/16/2022]
Abstract
In this study, SHT (switchable-hydrophilicity triethylamine, [Et₃NH]·[HCO₃]) has been synthesized and instrumentally characterized by Fourier transform⁻infrared spectroscopy (FTIR) and 13C nuclear magnetic resonance (NMR). The operational synthesis conditions of SHT were optimized and determined at 25 °C, Et₃N/H₂O volume ratio of 1:2 and CO₂ injection rate at 300 mL/min. When it was used to extract heavy oil from unconventional oil ore, it was found that it could break maltenes-in-water emulsions. When asphaltenes were present in the oil phase, it was observed that SHT could cooperate with asphaltenes. These results indicated that SHT works with asphaltenes, leading to synergistic effects in stabilizing oil⁻water (o/w) emulsions.
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Affiliation(s)
- Xingang Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
- National Engineering Research Centre for Distillation Technology, Tianjin 300072, China.
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
| | - Jinjian Hou
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
- National Engineering Research Centre for Distillation Technology, Tianjin 300072, China.
| | - Hong Sui
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
- National Engineering Research Centre for Distillation Technology, Tianjin 300072, China.
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
| | - Lingyu Sun
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
- National Engineering Research Centre for Distillation Technology, Tianjin 300072, China.
| | - Lin Xu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
- National Engineering Research Centre for Distillation Technology, Tianjin 300072, China.
- China Academy of Safety Science and Technology, Beijing 100012, China.
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20
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Svalova A, Parker NG, Povey MJW, Abbott GD. Determination of Asphaltene Critical Nanoaggregate Concentration Region Using Ultrasound Velocity Measurements. Sci Rep 2017; 7:16125. [PMID: 29170456 PMCID: PMC5700960 DOI: 10.1038/s41598-017-16294-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 10/31/2017] [Indexed: 11/21/2022] Open
Abstract
Asphaltenes constitute the heaviest, most polar and aromatic fraction of petroleum crucial to the formation of highly-stable water-in-crude oil emulsions. The latter occur during crude oil production as well as spills and cause difficulties to efficient remediation practice. It is thought that in nanoaggregate form, asphaltenes create elastic layers around water droplets enhancing stability of the emulsion matrix. Ultrasonic characterisation is a high-resolution non-invasive tool in colloidal analysis shown to successfully identify asphaltene nanoaggregation in toluene. The high sensitivity of acoustic velocity to molecular rearrangements and ease in implementation renders it an attractive method to study asphaltene phase properties. Currently, aggregation is thought to correspond to an intersection of two concentration-ultrasonic velocity regressions. Our measurements indicate a variation in the proximity of nanoaggregation which is not accounted for by present models. We attribute this uncertainty to physico-chemical heterogeneity of the asphaltene fraction driven by variation in molecular size and propose a critical nanoaggregation region. We treated asphaltenes from North and South American crude oils with ruthenium ion catalysed oxidation to characterize their n-alkyl appendages attached to aromatic cores. Principal component analysis was performed to investigate the coupling between asphaltene structures and velocity measurements and their impact on aggregation.
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Affiliation(s)
- Aleksandra Svalova
- Newcastle University, School of Natural and Environmental Sciences, Newcastle upon Tyne, NE1 7RU, United Kingdom.
| | - Nicholas G Parker
- Newcastle University, School of Mathematics, Statistics and Physics, Newcastle upon Tyne, NE1 7RU, United Kingdom
| | - Malcolm J W Povey
- University of Leeds, School of Food Science and Nutrition, Leeds, LS2 9JT, United Kingdom
| | - Geoffrey D Abbott
- Newcastle University, School of Natural and Environmental Sciences, Newcastle upon Tyne, NE1 7RU, United Kingdom
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21
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The properties of asphaltene at the oil-water interface: A molecular dynamics simulation. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2016.11.066] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Teklebrhan RB, Jian C, Choi P, Xu Z, Sjöblom J. Competitive Adsorption of Naphthenic Acids and Polyaromatic Molecules at a Toluene-Water Interface. J Phys Chem B 2016; 120:12901-12910. [PMID: 27959570 DOI: 10.1021/acs.jpcb.6b07938] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The early-stage competitive co-adsorption of interfacially active naphthenic acids (NAs) and polyaromatic (PA) molecules to a toluene-water interface from the bulk toluene phase was studied using molecular dynamics (MD) simulation. The NA molecules studied had the same polar functional group but different cycloaliphatic nonpolar tails, and a perylene bisimide (PBI)-based molecule was used as a representative PA compound. The results from our simulations suggest that the size and structural features of NA molecules greatly influence the interfacial activity of PA molecules and partitioning of NA molecules at the toluene-water interface. At low concentrations of PA (∼2.3 wt %) and NA (∼0.4 wt %) molecules, NA molecules containing large cycloaliphatic rings (e.g., four rings) or with a very long aliphatic tail (e.g., carbon chain length of 14) were observed to impede the migration of PA molecules to the interface, whereas small NA molecules containing two cycloaliphatic rings had little effect on the adsorption of PA molecules at the toluene-water interface. At high NA concentrations, the adsorption of PA molecules (∼5.75-17.25 wt %) was greatly hindered by the presence of small NA molecules (∼1.6-4.8 wt %) due to the solvation of PA nanoaggregates in the bulk. Adsorption mechanisms of PA and NA molecules at toluene-water interfaces were clarified through a detailed analysis on the interactions among different species in the system. The results obtained from this work provide insights into designing appropriate chemical demulsifiers or co-demulsifiers for breaking water-in-oil emulsions of great industrial applications.
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Affiliation(s)
| | | | | | - Zhenghe Xu
- Institute of Nuclear and New Energy Resources, Tsinghua University , Beijing 100084, China
| | - Johan Sjöblom
- Department of Chemical Engineering, Ugelstad Laboratory, Norwegian University of Science and Technology (NTNU) , Trondheim NO 7491, Norway
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Jian C, Poopari MR, Liu Q, Zerpa N, Zeng H, Tang T. Reduction of Water/Oil Interfacial Tension by Model Asphaltenes: The Governing Role of Surface Concentration. J Phys Chem B 2016; 120:5646-54. [DOI: 10.1021/acs.jpcb.6b03691] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Nestor Zerpa
- Nexen Energy ULC, A CNOOC Limited Company, Calgary, Alberta T2P 3P7, Canada
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Teklebrhan RB, Jian C, Choi P, Xu Z, Sjöblom J. Role of Naphthenic Acids in Controlling Self-Aggregation of a Polyaromatic Compound in Toluene. J Phys Chem B 2016; 120:3516-26. [DOI: 10.1021/acs.jpcb.5b10082] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Zhenghe Xu
- Institute
of Nuclear and New Energy Resources, Tsinghua University, Beijing 100084, China
| | - Johan Sjöblom
- Department
of Chemical Engineering, Ugelstad Laboratory, Norwegian University of Science and Technology (NTNU), Trondheim NO 7491, Norway
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26
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Molecular Structure and Association Behavior of Petroleum Asphaltene. STRUCTURE AND BONDING 2015. [DOI: 10.1007/430_2015_181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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27
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Chen Z, Peng J, Ge L, Xu Z. Demulsifying water-in-oil emulsions by ethyl cellulose demulsifiers studied using focused beam reflectance measurement. Chem Eng Sci 2015. [DOI: 10.1016/j.ces.2015.03.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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28
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Model molecules mimicking asphaltenes. Adv Colloid Interface Sci 2015; 218:1-16. [PMID: 25638443 DOI: 10.1016/j.cis.2015.01.002] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 10/05/2014] [Accepted: 01/09/2015] [Indexed: 11/22/2022]
Abstract
Asphalthenes are typically defined as the fraction of petroleum insoluble in n-alkanes (typically heptane, but also hexane or pentane) but soluble in toluene. This fraction causes problems of emulsion formation and deposition/precipitation during crude oil production, processing and transport. From the definition it follows that asphaltenes are not a homogeneous fraction but is composed of molecules polydisperse in molecular weight, structure and functionalities. Their complexity makes the understanding of their properties difficult. Proper model molecules with well-defined structures which can resemble the properties of real asphaltenes can help to improve this understanding. Over the last ten years different research groups have proposed different asphaltene model molecules and studied them to determine how well they can mimic the properties of asphaltenes and determine the mechanisms behind the properties of asphaltenes. This article reviews the properties of the different classes of model compounds proposed and present their properties by comparison with fractionated asphaltenes. After presenting the interest of developing model asphaltenes, the composition and properties of asphaltenes are presented, followed by the presentation of approaches and accomplishments of different schools working on asphaltene model compounds. The presentation of bulk and interfacial properties of perylene-based model asphaltene compounds developed by Sjöblom et al. is the subject of the next part. Finally the emulsion-stabilization properties of fractionated asphaltenes and model asphaltene compounds is presented and discussed.
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Mixed interfaces of asphaltenes and model demulsifiers part I: Adsorption and desorption of single components. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.10.051] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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30
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He L, Lin F, Li X, Sui H, Xu Z. Interfacial sciences in unconventional petroleum production: from fundamentals to applications. Chem Soc Rev 2015; 44:5446-94. [DOI: 10.1039/c5cs00102a] [Citation(s) in RCA: 203] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
With the ever increasing demand for energy to meet the needs of growth in population and improvement in the living standards, in particular in developing countries, the abundant unconventional oil reserves (about 70% of total world oil), such as heavy oil, oil/tar sands and shale oil, are playing an increasingly important role in securing global energy supply.
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Affiliation(s)
- Lin He
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin
- P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Feng Lin
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
| | - Xingang Li
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin
- P. R. China
- National Engineering Research Centre of Distillation Technology
| | - Hong Sui
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin
- P. R. China
- National Engineering Research Centre of Distillation Technology
| | - Zhenghe Xu
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
- Institute of Nuclear and New Energy Technology
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