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Wang C, Chen H, Shi H, Ma K, Ma Q, Gong J. Role of a Nanocomposite Pour Point Depressant on Wax Deposition in Different Flow Patterns from the Perspective of Crystallization Kinetics. ACS OMEGA 2022; 7:11200-11207. [PMID: 35415336 PMCID: PMC8992259 DOI: 10.1021/acsomega.2c00068] [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: 01/04/2022] [Accepted: 03/11/2022] [Indexed: 06/14/2023]
Abstract
Wax deposition is one of the core issues affecting flow assurance studies of crude oil pipelines, particularly with deep and ultradeep water conditions. Nanocomposite pour point depressants (NPPDs) provide a novel and effective strategy for inhibiting wax deposition and have recently attracted increasing research attention. Although recent advances have been made in understanding the performance and mechanism of NPPDs, the effect of flow pattern remains an open question. In this paper, deposition thicknesses of waxy oils with different flow patterns and NPPD dosages were obtained using a flow loop experimental device. It was found that the NPPD used in the current work can effectively inhibit the formation of wax deposition layers in different flow patterns. The Avrami model-focused beam reflectance measurement and polarizing microscope experiment method were used to characterize crystallization kinetics parameters and mesoscopic structure parameters of wax crystals. The consistency of results from Avrami equation fitting parameters, wax crystal morphology, and particle number supported the validity of crystallization kinetics analysis. The mechanisms of NPPD in different flow regimes were discussed. The inhibition of laminar and turbulent deposition layers by NPPD was attributed to the improvement of wax crystal morphology and the reduction of wax crystal number, respectively. This has important consequences for our understanding of the utilization and mechanism of nanocomposite pour point depressants.
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Affiliation(s)
- Chuanshuo Wang
- National
Engineering Laboratory for Pipeline Safety/MOE Key Laboratory of Petroleum
Engineering/Beijing Key Laboratory of Urban Oil and Gas Distribution
Technology, China University of Petroleum, Beijing 102249, P.R. China
| | - Hongju Chen
- China
National Offshore Oil Cooperation Research Center, Beijing 100027, P.R. China
| | - Haitao Shi
- National
Engineering Laboratory for Pipeline Safety/MOE Key Laboratory of Petroleum
Engineering/Beijing Key Laboratory of Urban Oil and Gas Distribution
Technology, China University of Petroleum, Beijing 102249, P.R. China
| | - Ke Ma
- National
Engineering Laboratory for Pipeline Safety/MOE Key Laboratory of Petroleum
Engineering/Beijing Key Laboratory of Urban Oil and Gas Distribution
Technology, China University of Petroleum, Beijing 102249, P.R. China
| | - Qianli Ma
- Jiangsu
Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University, Changzhou 213164, P.R. China
| | - Jing Gong
- National
Engineering Laboratory for Pipeline Safety/MOE Key Laboratory of Petroleum
Engineering/Beijing Key Laboratory of Urban Oil and Gas Distribution
Technology, China University of Petroleum, Beijing 102249, P.R. China
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2
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Ning X, Song X, Zhang S, Wang Y, Feng Y. Insights into Flow Improving for Waxy Crude Oil Doped with EVA/SiO 2 Nanohybrids. ACS OMEGA 2022; 7:5853-5863. [PMID: 35224346 PMCID: PMC8867590 DOI: 10.1021/acsomega.1c05953] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 01/25/2022] [Indexed: 05/06/2023]
Abstract
Nanohybrid materials can significantly inhibit wax deposition and improve the fluidity of crude oil. However, the mechanisms behind wax resolving, crystal modification, and flow improving are still unclear owing to the complexity of crude oil. Here, we compared the effect of ethylene vinyl acetate (EVA) and nanohybrids composed of EVA and SiO2 nanoparticles on wax crystallization and rheological behavior of Shengli waxy oil. Differential scanning calorimetry results indicate that SiO2 nanoparticles boost the efficiency of EVA for reducing the wax appearance temperature of waxy crude oil. Thermo X-ray diffraction characterization demonstrates that EVA/SiO2 nanohybrids cut down the crystal index of waxes, with the grain size of crystal cells decreased in (006) and (200) but increased in (110) cross sections. Polarized optical microscopy imaging reveals that EVA can modify the morphology of wax crystals to suppress the formation of wax gel, and nanohybrids serve as nucleuses to adsorb asphaltenes and resins, restraining the appearance of wax crystals. The rheological test shows that nanohybrids outperform EVA in decreasing the viscosity, inflection point, and yield stress of waxy crude oil. These findings help the understanding of flow improving by nanohybrid materials and offer guidelines for designing the new generation of wax inhibitors for safe transportation and flow assurance of waxy crude oil.
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Affiliation(s)
- Xuewen Ning
- Polymer
Research Institute, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People’s Republic of China
| | - Xin Song
- Polymer
Research Institute, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People’s Republic of China
| | - Sheng Zhang
- Shengli
Oilfield Shengli Chemicals Co., Ltd., Dongying 257055, People’s
Republic of China
| | - Yong Wang
- Shengli
Oilfield Shengli Chemicals Co., Ltd., Dongying 257055, People’s
Republic of China
| | - Yujun Feng
- Polymer
Research Institute, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People’s Republic of China
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3
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Maleki A, Hosseini-Dastgerdi Z, Rashidi A. Effect of nanoparticle modified polyacrylamide on wax deposition, crystallization and flow behavior of light and heavy crude oils. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2021.2010567] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ashkan Maleki
- Science and Research Branch, Islamic Azad University, Tehran, Iran
| | | | - Alimorad Rashidi
- Nanotechnology Research Centre, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
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4
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Ahmadi Khoshooei M, Maham Y. Enthalpic perspective on thermodynamic equilibrium of bulk and confined liquids: A review. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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5
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Review of wax deposition in subsea oil pipeline systems and mitigation technologies in the petroleum industry. CHEMICAL ENGINEERING JOURNAL ADVANCES 2021. [DOI: 10.1016/j.ceja.2021.100104] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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6
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Huang H, Wang W, Peng Z, Yang F, Zhang X, Ding Y, Li K, Wang C, Gan D, Gong J. Magnetic Organic-Inorganic Nanohybrid for Efficient Modification of Paraffin Hydrocarbon Crystallization in Model Oil. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:591-599. [PMID: 31909630 DOI: 10.1021/acs.langmuir.9b03278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Crystallization modification has been applied in many fields, such as materials science, petroleum engineering, and chemical engineering. The modification of organic-inorganic hybrids via paraffin hydrocarbon crystallization has been significantly important for the exploration of undersea oil and gas resources. In this work, a metal oxide organic-inorganic hybrid pour point depressant (MOIH-PPD) is provided along with an analysis of the microscopic structure of the paraffin hydrocarbon crystal employing small-angle X-ray scattering and X-ray diffraction. The MOIH-PPD modified crystal grain exhibited a decrease in the long period and in the radius of gyration of the crystal grain and an increase in the thickness of the interface layer compared with those of the unmodified paraffin crystal. In addition, the synergistic effect of heterogeneous nucleation and the magnetic response of MOIH-PPD on the paraffin hydrocarbon system was also investigated, revealing that the synergism modification yields stress superior to that of MOIH-PPD or magnetic field alone, which provides insight into the possibility of the modification of paraffin hydrocarbon crystallization.
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Affiliation(s)
- Huirong Huang
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, MOE Key Laboratory of Petroleum Engineering, National Engineering Laboratory for Pipeline Safety , China University of Petroleum , Beijing 102249 , P. R. China
| | - Wei Wang
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, MOE Key Laboratory of Petroleum Engineering, National Engineering Laboratory for Pipeline Safety , China University of Petroleum , Beijing 102249 , P. R. China
| | - Zeheng Peng
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, MOE Key Laboratory of Petroleum Engineering, National Engineering Laboratory for Pipeline Safety , China University of Petroleum , Beijing 102249 , P. R. China
| | - Feng Yang
- State Key Laboratory of Heavy Oil Processing , China University of Petroleum , Beijing 102249 , China
| | - Xiaofeng Zhang
- State Key Laboratory of Heavy Oil Processing , China University of Petroleum , Beijing 102249 , China
| | - Yanfen Ding
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Kai Li
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, MOE Key Laboratory of Petroleum Engineering, National Engineering Laboratory for Pipeline Safety , China University of Petroleum , Beijing 102249 , P. R. China
| | - Chuanshuo Wang
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, MOE Key Laboratory of Petroleum Engineering, National Engineering Laboratory for Pipeline Safety , China University of Petroleum , Beijing 102249 , P. R. China
| | - Dongying Gan
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, MOE Key Laboratory of Petroleum Engineering, National Engineering Laboratory for Pipeline Safety , China University of Petroleum , Beijing 102249 , P. R. China
| | - Jing Gong
- Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, MOE Key Laboratory of Petroleum Engineering, National Engineering Laboratory for Pipeline Safety , China University of Petroleum , Beijing 102249 , P. R. China
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7
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König N, Willner L, Lund R. Structure and thermodynamics of mixed polymeric micelles with crystalline cores: tuning properties via co-assembly. SOFT MATTER 2019; 15:7777-7786. [PMID: 31482169 DOI: 10.1039/c9sm01452g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We investigate micelles formed by mixtures of n-alkyl-poly(ethylene oxide) block copolymers, Cn-PEO, with different alkyl block lengths in aqueous solution. This model system has previously been used to shed light on the interplay between exchange kinetics and crystallinity in self-assembling systems [König et al., Phys. Rev. Lett., 2019, 122, 078001]. Now we report on the structure and thermodynamics of these micelles by combining results from small-angle X-ray scattering, differential scanning calorimetry and volumetric measurements. We show that mixed micelles are formed despite the fact that length-mismatched n-alkanes of similar weights in bulk tend to demix below the crystallization temperature. Instead, the system exhibits similar properties as single-component micelles but with a modulated melting region. Interestingly, the melting point depression due to self-confinement within the micellar core can be approximately described by a generalized Gibbs-Thomson equation, similar to single-component micelles [Zinn et al. Phys. Rev. Lett., 2014, 113, 238305]. Furthermore, we find a novel scaling law for these micelles where, at least for larger n, the aggregation number scales with the third power of the length of the hydrophobic block, Nagg ∝ n3. Possibly, there might be a cross-over from the conventional Nagg ∝ n2 behaviour around n ≈ 19. However, the reason for such a transition as well as the strong n dependence remains a challenge and requires more theoretical work.
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Affiliation(s)
- Nico König
- Department of Chemistry, University of Oslo, Postboks 1033 Blindern, 0315 Oslo, Norway.
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8
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Kleinsasser JF, Reinhart ED, Estrada J, Jordan RF, Lavallo V. Ethylene Oligomerization and Polymerization by Palladium(II) Methyl Complexes Supported by Phosphines Bearing a Perchlorinated 10-Vertex closo-Carborane Anion Substituent. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00772] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Jack F. Kleinsasser
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Erik D. Reinhart
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
| | - Jess Estrada
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Richard F. Jordan
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
| | - Vincent Lavallo
- Department of Chemistry, University of California, Riverside, California 92521, United States
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9
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Ivchenko PV, Nifant’ev IE. Polymer Depressor Additives: Synthesis, Microstructure, Efficiency. POLYMER SCIENCE SERIES A 2018. [DOI: 10.1134/s0965545x18050061] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Li T, Wang T, Xu J, Zou R, Si Z, Becker J, Li L, Cohen Stuart MA, Prud’homme RK, Guo X. Pressure Effect on the Rheological Behavior of Waxy Crude Oil with Comb-Type Copolymers Bearing Azobenzene Pendant. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.7b05217] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tao Li
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Tongshuai Wang
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Jun Xu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Run Zou
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Zhongye Si
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Julian Becker
- Department of Process Engineering, Nuremberg Institute of Technology, Nuremberg 90489, Germany
| | - Li Li
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Martien A. Cohen Stuart
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Robert K. Prud’homme
- Department of Chemical Engineering and Princeton Materials Institute, Princeton University, Princeton, New Jersey 08544, United States
| | - Xuhong Guo
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
- Engineering Research Center of Materials Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Xinjiang 832000, China
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11
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Li T, Xu J, Zou R, Jiang H, Wang J, Li L, Cohen Stuart MA, Prud’homme RK, Guo X. Effect of Spacer Length between Phenyl Pendant and Backbone in Comb Copolymers on Flow Ability of Waxy Oil with Asphaltenes. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b02904] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tao Li
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jun Xu
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Run Zou
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Hejian Jiang
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Junyou Wang
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Li Li
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Martien A. Cohen Stuart
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Robert K. Prud’homme
- Department
of Chemical Engineering and Princeton Materials Institute, Princeton University, Princeton, New Jersey 08544, United States
| | - Xuhong Guo
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
- Engineering
Research Center of Materials Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Xinjiang 832000, PR China
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12
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Jung T, Kim JN, Kang SP. Influence of polymeric additives on paraffin wax crystallization in model oils. KOREAN J CHEM ENG 2016. [DOI: 10.1007/s11814-016-0052-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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13
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Ivanova IK, Koryakina VV, Semenov ME. Phase transitions of petroleum waxes in hydrocarbon solvents of different chemical nature. RUSS J APPL CHEM+ 2015. [DOI: 10.1134/s1070427215080169] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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Xu J, Jiang H, Li T, Wei X, Wang T, Huang J, Wang W, Smith AL, Wang J, Zhang R, Xu Y, Li L, Prud’homme RK, Guo X. Effect of Comb-type Copolymers with Various Pendants on Flow Ability of Heavy Crude Oil. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b00674] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Xu
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Hejian Jiang
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Tao Li
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaoming Wei
- Petrochina Liaohe Oilfield Company, Panjin 124010, China
| | - Tongshuai Wang
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jing Huang
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Weina Wang
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Anthony L. Smith
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jie Wang
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Rui Zhang
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yisheng Xu
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Li Li
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Robert K. Prud’homme
- Department
of Chemical Engineering and Princeton Materials Institute, Princeton University, Princeton, New Jersey 08544, United States
| | - Xuhong Guo
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
- Key
Laboratory of Xinjiang Uygur Autonomous Region and Engineering Research
Center of Xinjiang Production and Construction Corps for Materials
Chemical Engineering, Shihezi University, Xinjiang 832000, PR China
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15
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Wang T, Xu J, Wang M, Wei X, Shen M, Huang J, Zhang R, Li L, Guo X. Synthesis of comb-type copolymers with various pendants and their effect on the complex rheological behaviors of waxy oils. J Appl Polym Sci 2014. [DOI: 10.1002/app.41660] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tongshuai Wang
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology; Shanghai 200237 China
| | - Jun Xu
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology; Shanghai 200237 China
| | - Minglei Wang
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology; Shanghai 200237 China
| | - Xiaoming Wei
- Petrochina Liaohe Oilfield Company; Panjin 124010 China
| | - Muxian Shen
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology; Shanghai 200237 China
| | - Jing Huang
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology; Shanghai 200237 China
| | - Rui Zhang
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology; Shanghai 200237 China
| | - Li Li
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology; Shanghai 200237 China
| | - Xuhong Guo
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology; Shanghai 200237 China
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16
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Yang F, Zhao Y, Sjöblom J, Li C, Paso KG. Polymeric Wax Inhibitors and Pour Point Depressants for Waxy Crude Oils: A Critical Review. J DISPER SCI TECHNOL 2014. [DOI: 10.1080/01932691.2014.901917] [Citation(s) in RCA: 144] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Fei Yang
- a College of Pipeline and Civil Engineering , China University of Petroleum , Qingdao , Shandong , P. R. China
| | - Yansong Zhao
- b Ugelstad Laboratory, Department of Chemical Engineering , Norwegian University of Science and Technology , Trondheim , Norway
| | - Johan Sjöblom
- b Ugelstad Laboratory, Department of Chemical Engineering , Norwegian University of Science and Technology , Trondheim , Norway
| | - Chuanxian Li
- b Ugelstad Laboratory, Department of Chemical Engineering , Norwegian University of Science and Technology , Trondheim , Norway
| | - Kristofer G. Paso
- b Ugelstad Laboratory, Department of Chemical Engineering , Norwegian University of Science and Technology , Trondheim , Norway
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17
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Jiang H, Xu J, Wei X, Wang T, Wang W, Li L, Guo X. Flow improvement of Liaohe extraheavy oil with comb-type copolymers. J Appl Polym Sci 2013. [DOI: 10.1002/app.40082] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hejian Jiang
- State Key Laboratory of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Jun Xu
- State Key Laboratory of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Xiaoming Wei
- Petrochina Liaohe Oilfield Company; Panjin 124010 China
| | - Tongshuai Wang
- State Key Laboratory of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Weina Wang
- State Key Laboratory of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Li Li
- State Key Laboratory of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Xuhong Guo
- State Key Laboratory of Chemical Engineering; East China University of Science and Technology; Shanghai 200237 China
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18
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Li L, Xu J, Tinsley J, Adamson DH, Pethica BA, Huang JS, Prud'homme RK, Guo X. Improvement of oil flowability by assembly of comb-type copolymers with paraffin and asphaltene. AIChE J 2011. [DOI: 10.1002/aic.12729] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Ahmed NS, Nasser AM, Kamal RS. Influence of Some Compounds as Antioxidants and Detergents/Dispersants for Lube Oil. J DISPER SCI TECHNOL 2011. [DOI: 10.1080/01932691.2010.497460] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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Nasser AM, Ahmed NS, Kamal RS. Preparation and Evaluation of Some Terpolymers as Lube Oil Additives. J DISPER SCI TECHNOL 2011. [DOI: 10.1080/01932691003659692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Li L, Guo X, Adamson DH, Pethica BA, Huang JS, Prud’homme RK. Flow Improvement of Waxy Oils by Modulating Long-Chain Paraffin Crystallization with Comb Polymers: An Observation by X-ray Diffraction. Ind Eng Chem Res 2010. [DOI: 10.1021/ie101575w] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Li Li
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China, Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States, and Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Xuhong Guo
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China, Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States, and Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Douglas H. Adamson
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China, Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States, and Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Brian A. Pethica
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China, Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States, and Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - John S. Huang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China, Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States, and Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Robert K. Prud’homme
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China, Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States, and Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
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22
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Nürnberger JV, Santos RGD, Oliveira MGD, Mohamed RS. Gelation Behavior of N-Decane Organogels with Gelators C 28and C 40. J DISPER SCI TECHNOL 2009. [DOI: 10.1080/01932690802598796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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23
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Xu J, Zhang X, Sun J, Li L, Guo X. How comb-type poly(maleic acid alkylamide-co-α-olefin) assemble in waxy oils and improve flowing ability. ASIA-PAC J CHEM ENG 2009. [DOI: 10.1002/apj.281] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Rademeyer M, Kruger GJ, Billing DG. Crystal structures and phase transitions of long-chain n-alkylammonium bromide monohydrates. CrystEngComm 2009. [DOI: 10.1039/b817318d] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Carnali JO, Pethica BA. Quarter-Salt Formation Defining the Anomalous Temperature Dependence of the Aqueous Solubility of Sodium Monododecyl Phosphate. J Phys Chem B 2006; 110:24936-46. [PMID: 17149915 DOI: 10.1021/jp062731c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The salts of monoalkyl phosphates (MAPs) have been identified as a class of inherently mild surfactants for use in household and personal products. They represent an anionic species intermediate in terms of pKa between the sulfates and the carboxylates and are analogous to the carboxylates in that they form acid-salts (which are here termed quarter-salts)-hydrogen-bonded dimers consisting of an undissociated MAP acid and an MAP monosalt. These complexes precipitate from solutions of the monosalt over a range of lower MAP concentrations giving rise to an unusual solubility/temperature relationship. The solubility of monosodium monododecyl phosphate (NaC(12)MAP) increases with temperature up to 0.01 M at approximately 60 degrees C, which corresponds to the conventional Krafft point as shown by the appearance of micelles in solution. The solubility then increases further to approximately 0.04 M as the solubility temperature declines from 60 to 38 degrees C. The transition between these two trends is characterized by a rather sharp temperature maximum in the solubility curve. In a third stage, the solubility then rises rapidly with very small change of temperature. This unusual overall behavior is shown to correspond with three distinct solid-phase compositions for the precipitates at temperatures below the solubility curve. At the lowest concentrations and up through the Krafft Point, the solid phase has been identified as the stoichiometric quarter-salt. Over the declining temperature portion of the solubility curve, the supernatant solution coexists with a macroscopic mixture of separate quarter-salt and monosalt solids. In the high-concentration third region the solid phase is exclusively the MAP monosalt. The coprecipitation of quarter-salt and monosalt from the monosalt solution occurs reversibly in the declining portion of the solubility curve and is accompanied by an increase in pH. The four phase system (solution, vapor, and two pure solid phases) retains one degree of freedom according to the phase rule since the system is in effect three component in that region.
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Affiliation(s)
- Joseph O Carnali
- Unilever Research and Development, 40 Merritt Boulevard, Trumbull, Connecticut 06611, USA.
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