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Utilizing ionic liquids as additives for oil property modulation
Alternative TitleRSC Adv.
Zhao, Yansong1; Paso, Kristofer1; Zhang, Xiangping2; Sjoblom, Johan1
2014
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume4Issue:13Pages:6463-6470
AbstractIonic liquids are assessed as chemical additives to modulate physical properties of oils. Rheometry, differential scanning calorimetry, thermogravimetric analysis and microscopy are used to investigate the effect of ionic liquids on oil properties. The measured maximum apparent viscosity value of Model Oil A increases by 178.7% in the presence of 1 wt% 1-butyl-3-methylimidazolium chloride. Similarly, the value increases in the presence of other conventional ionic liquids. However, the dispersed property of ILs in Model Oil A is not as good as expected. Thus, dispersant D-IL-202 is utilized to make ionic liquids dispersed completely in Model Oil A and form Model Oil B. The gel strength and maximum measured apparent viscosity of Model Oil B increase by 477.4%, 352.4% respectively in the presence of 1 wt% 1-butyl-3-methylimidazolium chloride. Wax crystals precipitate at temperature below wax appearance temperature. The melting point of 1-butyl-3-methylimidazolium chloride is higher than wax appearance temperature. Therefore, during the gelation process, the precipitated crystals of 1-butyl-3-methylimidazolium chloride may serve as nuclei and enhance wax crystal nucleation, precipitation and growth. In addition, the charges of 1-butyl-3-methylimidazolium chloride may make the precipitated wax crystals form a charge-stabilized colloids system. Thus, strong and stable crystal networks form during the gelation process. 1-Butyl-3-methylimidazolium chloride can be utilized as a wax promoter additive for wax separation from waxy oils in the oil industry. Thermogravimetric analysis shows 1-butyl-3-methylimidazolium chloride does not influence the decomposition temperatures of wax and asphaltene. However, the decomposition temperature of 1-butyl-3-methylimidazolium chloride increases in the presence of wax and decreases in the presence of asphaltene. Furthermore, micrographs results show 1-butyl-3-methylimidazolium chloride enhances wax precipitation to make long wax crystals form. In summary, the conventional ionic liquids used in this work can enhance the wax precipitation and/or stabilize the wax crystal networks. Thus, these ionic liquids can be utilized as a wax promoter additive for wax separation in the waxy oil industry. In addition, the property and function of ionic liquids can be designed and modified to be utilized as novel additives for oil properties modulation. Therefore, ionic liquids are promising environmentally friendly additives for the oil industry.; Ionic liquids are assessed as chemical additives to modulate physical properties of oils. Rheometry, differential scanning calorimetry, thermogravimetric analysis and microscopy are used to investigate the effect of ionic liquids on oil properties. The measured maximum apparent viscosity value of Model Oil A increases by 178.7% in the presence of 1 wt% 1-butyl-3-methylimidazolium chloride. Similarly, the value increases in the presence of other conventional ionic liquids. However, the dispersed property of ILs in Model Oil A is not as good as expected. Thus, dispersant D-IL-202 is utilized to make ionic liquids dispersed completely in Model Oil A and form Model Oil B. The gel strength and maximum measured apparent viscosity of Model Oil B increase by 477.4%, 352.4% respectively in the presence of 1 wt% 1-butyl-3-methylimidazolium chloride. Wax crystals precipitate at temperature below wax appearance temperature. The melting point of 1-butyl-3-methylimidazolium chloride is higher than wax appearance temperature. Therefore, during the gelation process, the precipitated crystals of 1-butyl-3-methylimidazolium chloride may serve as nuclei and enhance wax crystal nucleation, precipitation and growth. In addition, the charges of 1-butyl-3-methylimidazolium chloride may make the precipitated wax crystals form a charge-stabilized colloids system. Thus, strong and stable crystal networks form during the gelation process. 1-Butyl-3-methylimidazolium chloride can be utilized as a wax promoter additive for wax separation from waxy oils in the oil industry. Thermogravimetric analysis shows 1-butyl-3-methylimidazolium chloride does not influence the decomposition temperatures of wax and asphaltene. However, the decomposition temperature of 1-butyl-3-methylimidazolium chloride increases in the presence of wax and decreases in the presence of asphaltene. Furthermore, micrographs results show 1-butyl-3-methylimidazolium chloride enhances wax precipitation to make long wax crystals form. In summary, the conventional ionic liquids used in this work can enhance the wax precipitation and/or stabilize the wax crystal networks. Thus, these ionic liquids can be utilized as a wax promoter additive for wax separation in the waxy oil industry. In addition, the property and function of ionic liquids can be designed and modified to be utilized as novel additives for oil properties modulation. Therefore, ionic liquids are promising environmentally friendly additives for the oil industry.
KeywordWaxy Crude-oil Co2 Capture Pour Point Catalytic-reactions Growth-inhibitors Temperature Viscosity Membranes Microemulsions Dissolution
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c3ra46842a
URL查看原文
Indexed BySCI
Language英语
WOS KeywordWAXY CRUDE-OIL ; CO2 CAPTURE ; POUR POINT ; CATALYTIC-REACTIONS ; GROWTH-INHIBITORS ; TEMPERATURE ; VISCOSITY ; MEMBRANES ; MICROEMULSIONS ; DISSOLUTION
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000329931000015
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/8234
Collection研究所(批量导入)
Affiliation1.Norwegian Univ Sci & Technol NTNU, Dept Chem Engn, Ugelstad Lab, NO-7491 Trondheim, Norway
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Yansong,Paso, Kristofer,Zhang, Xiangping,et al. Utilizing ionic liquids as additives for oil property modulation[J]. RSC ADVANCES,2014,4(13):6463-6470.
APA Zhao, Yansong,Paso, Kristofer,Zhang, Xiangping,&Sjoblom, Johan.(2014).Utilizing ionic liquids as additives for oil property modulation.RSC ADVANCES,4(13),6463-6470.
MLA Zhao, Yansong,et al."Utilizing ionic liquids as additives for oil property modulation".RSC ADVANCES 4.13(2014):6463-6470.
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