Journal of Supercritical Fluids最新文献_第2页

A simple and efficient method for preparing high-expansion, low-shrinkage poly(ether-block-amide) foam 一种制备高膨胀低收缩聚醚块酰胺泡沫的简单有效方法

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-16 DOI: 10.1016/j.supflu.2025.106699

Yujiao Zhai , Jing Zhang , Yuxuan Yang , Yuyin Zhao , Jiale Chen , Fenghao Shi , Chunling Xin , Yadong He

{"title":"A simple and efficient method for preparing high-expansion, low-shrinkage poly(ether-block-amide) foam","authors":"Yujiao Zhai , Jing Zhang , Yuxuan Yang , Yuyin Zhao , Jiale Chen , Fenghao Shi , Chunling Xin , Yadong He","doi":"10.1016/j.supflu.2025.106699","DOIUrl":"10.1016/j.supflu.2025.106699","url":null,"abstract":"<div><div>Poly(ether-block-amide) (PEBA) is limited by its insufficient matrix strength and low melt viscoelasticity, which adversely affect its foaming performance and present significant challenges for preparing high performance PEBA foams. To overcome these limitations, this work introduces an epoxy chain extender KL-E4370B to modify PEBA via chain extension. The results demonstrate that the modified PEBA achieves a markedly higher branching degree, accompanied by a three order of magnitude increase in complex viscosity and storage modulus. These improvements elevate the expansion ratio from 22.05 to 26.82 and extend the foaming temperature window by 70 °C. However, the modification also leads to a decline in crystallinity performance, characterized by a 5.28 % reduction in crystallization temperature, a 13.07 % decrease in crystallinity, and a 34.62 % slowdown in crystallization rate. These changes lead to significant foam shrinkage, with a shrinkage rate of up to 83.59 % and a recovery rate as low as 21.66 %, which compromises dimensional stability. To address these issues, a secondary N<sub>2</sub> foaming assisted gas exchange method was implemented. This approach not only restores the expansion ratio of the shrunken foam but also surpasses the initial expansion ratio achieved by primary CO<sub>2</sub> foaming. Furthermore, increasing the saturation time or pressure enhances the solubility of N<sub>2</sub> in PEBA, thereby further improving the expansion ratio of foam. Ultimately, this study successfully fabricates a PEBA foam material with an expansion ratio of up to 44.17 and a shrinkage rate as low as 40 %. This work provides a simple and effective strategy for producing high-expansion, low-shrinkage thermoplastic elastomer foams.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106699"},"PeriodicalIF":3.4,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144329662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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TBABr-based deep eutectic mixtures as efficient catalytic medium for the cycloaddition reaction between CO2 and epoxides tbabr基深共晶混合物作为CO2与环氧化物环加成反应的高效催化介质

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-15 DOI: 10.1016/j.supflu.2025.106696

A.B. Paninho , S. Messias , M.E. Zakrzewska , L.C. Branco , A.V.M. Nunes

{"title":"TBABr-based deep eutectic mixtures as efficient catalytic medium for the cycloaddition reaction between CO2 and epoxides","authors":"A.B. Paninho , S. Messias , M.E. Zakrzewska , L.C. Branco , A.V.M. Nunes","doi":"10.1016/j.supflu.2025.106696","DOIUrl":"10.1016/j.supflu.2025.106696","url":null,"abstract":"<div><div>The production of cyclic carbonates from CO<sub>2</sub> and epoxides is one of the most investigated strategies for the chemical utilization of CO<sub>2</sub> as renewable carbon source. In this work different tetrabutylammonium bromide (TBABr)-based deep eutectic mixtures were prepared and tested as catalytic systems for the cycloaddition reaction between CO<sub>2</sub> and propylene oxide. Best results were obtained for TBABr:Glycerol deep eutectic system. The operating conditions (reaction temperature, CO<sub>2</sub> pressure and TBABr:Glycerol molar ratio) on propylene carbonate formation was studied. The catalytic activity of DES (TBABr: Gly (1:5)) was also tested for different epoxides resulting in the corresponding cyclic carbonates in good yields, the exceptions were cyclohexene oxide and limonene oxide, which are more difficult to activate owing to an increased steric hindrance. Finally, the reusability of the catalytic medium was investigated using supercritical CO<sub>2</sub> extraction as a second step for product separation from the reaction mixture.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106696"},"PeriodicalIF":3.4,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144304557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Thermodynamic consistency assessment and modeling of methane and carbon dioxide hydrates dissociation conditions in the presence of deep eutectic solvents as eco-friendly inhibitors 深层共晶溶剂作为生态友好抑制剂存在下甲烷和二氧化碳水合物解离条件的热力学一致性评估和建模

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-14 DOI: 10.1016/j.supflu.2025.106698

Ali Rasoolzadeh , Ali Bakhtyari , Khayyam Mehrabi , Jafar Javanmardi , Khashayar Nasrifar , Amir H. Mohammadi

{"title":"Thermodynamic consistency assessment and modeling of methane and carbon dioxide hydrates dissociation conditions in the presence of deep eutectic solvents as eco-friendly inhibitors","authors":"Ali Rasoolzadeh , Ali Bakhtyari , Khayyam Mehrabi , Jafar Javanmardi , Khashayar Nasrifar , Amir H. Mohammadi","doi":"10.1016/j.supflu.2025.106698","DOIUrl":"10.1016/j.supflu.2025.106698","url":null,"abstract":"<div><div>The formation of gas hydrates in gas-dominated pipelines results in flow assurance challenges, potentially leading to blockages, production interruptions, equipment malfunctions, and financial losses. This study presents a comprehensive thermodynamic modeling framework to calculate methane and carbon dioxide hydrates dissociation conditions in the presence of deep eutectic solvent (DES) aqueous solution as promising thermodynamic hydrate inhibitor. A modified van der Waals-Platteeuw (vdW-P) model is utilized for the hydrate phase, combined with the Peng-Robinson (PR) equation of state for the gas/vapor phase. Water activity is calculated employing a combination of Flory-Huggins (FH), NRTL, or UNIQUAC models for short-range molecular interactions and the Pitzer model for long-range ionic effects. A database of 80 experimental hydrate dissociation conditions points across eight DES systems is then analyzed. All three modeling packages yield average absolute deviations (AAD) below 1 K, with the (vdW-P + PR + FH + Pitzer) model achieving the lowest AAD of 0.46 K after thermodynamic consistency screening. Thermodynamic consistency tests reveal that only 12 out of the 80 data points fully satisfy all three criteria (Clausius–Clapeyron linearity, enthalpy consistency, and water activity stability), which indicates potential limitations in experimental data reliability. The study presents a robust and validated modeling tool for calculating hydrate phase equilibrium in DES-containing systems, highlighting the importance of consistency tests in assessing experimental data quality.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106698"},"PeriodicalIF":3.4,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144304558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Understanding the corrosion behavior of additive manufactured 316L stainless steel in supercritical carbon dioxide at high temperature 了解添加剂制造的316L不锈钢在超临界二氧化碳中的高温腐蚀行为

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-13 DOI: 10.1016/j.supflu.2025.106697

Bin Wu , Nanfu Li , Chao Xiang , Jiazhen Wang , Hongliang Ming , Jianqiu Wang , En-Hou Han

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Experimental study on convective heat transfer of scCO2 with a middle-high permeability pore scale cretaceous sandstone 白垩纪中高渗孔隙砂岩scCO2对流换热实验研究

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-13 DOI: 10.1016/j.supflu.2025.106694

Sapargeldi Amangeldiyev , Qiu-Yun Zheng , Xin-Rong Zhang , Yan Wang , Yong-Zhi Yang

{"title":"Experimental study on convective heat transfer of scCO2 with a middle-high permeability pore scale cretaceous sandstone","authors":"Sapargeldi Amangeldiyev , Qiu-Yun Zheng , Xin-Rong Zhang , Yan Wang , Yong-Zhi Yang","doi":"10.1016/j.supflu.2025.106694","DOIUrl":"10.1016/j.supflu.2025.106694","url":null,"abstract":"<div><div>In the context of the two - carbon goal, the large - scale utilization of carbon dioxide medium, especially in geothermal resource development, is crucial for reducing non - renewable resource consumption and promoting a green - low - carbon future. The heat generated can be applied in power generation, energy storage, heating, etc., enhancing energy efficiency. Research on convective heat transfer between supercritical carbon dioxide (scCO<sub>2</sub>) and porous medium rocks is gaining importance for its applications in geothermal energy and carbon capture. Based on middle - deep geothermal research, a flow - heat - transfer test bed for high - temperature and high - pressure supercritical fluids and porous media was constructed. Different injection flow rates were experimentally compared and analyzed. Results show that the convective heat transfer is complex, related to fluid and rock properties, flow rate, and temperature gradient. Under reservoir-related conditions, combining pore-scale CT analysis with high-temperature and high-pressure experiments, it is found that the cemented structure of Cretaceous sandstone increases the convection efficiency of scCO<sub>2</sub> by 20–35 %. Nusselt number curves were fitted, and local convective heat transfer on the fracture surface was analyzed. Higher flow rates lead to better heat recovery per unit mass flow rate and faster production temperature drops. Rock initial temperature impacts fluid exit temperature and heat transfer. Novel insights into scCO<sub>2</sub> tortuous flow dynamics and calcite-cemented microstructure interactions are provided, advancing geothermal reservoir simulation accuracy.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106694"},"PeriodicalIF":3.4,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Optimization and performance evaluation of equations of state for supercritical CO2-rich mixtures for application in the NET Power cycle 超临界富二氧化碳混合物在净功率循环中的状态方程优化与性能评价

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-11 DOI: 10.1016/j.supflu.2025.106693

Iván Velázquez , Frederiek Demeyer , Miriam Reyes

{"title":"Optimization and performance evaluation of equations of state for supercritical CO2-rich mixtures for application in the NET Power cycle","authors":"Iván Velázquez , Frederiek Demeyer , Miriam Reyes","doi":"10.1016/j.supflu.2025.106693","DOIUrl":"10.1016/j.supflu.2025.106693","url":null,"abstract":"<div><div>In this paper the interaction parameters of six equations of state (EoS) were calibrated from density and phase equilibrium experimental data of supercritical CO<sub>2</sub>-rich mixtures. The Peng-Robinson (PR), Soave-Redlich-Kwong (SRK), Lee-Kesler-Plöcker (LKP), Benedict-Webb-Rubin-Starling (BWRS), perturbed chain SAFT (PC-SAFT) and Cubic-Plus-Association (CPA) EoSs were considered. As a novelty, the pressure, temperature and composition ranges for calibration were (1 – 49) MPa, (293.18 – 423.15) K, and (72.6 – 99.8) % mol CO<sub>2</sub>, which are close to those found in the innovative oxy-combustion NET Power cycle, particularizing the optimization of the EoSs for application in this power cycle. The performance of the EoSs, including the GERG-2008 EoS, was assessed in an isentropic compression process from 7.4 MPa to 30 MPa. The LKP EoS reported the lowest average deviation, 2.03 %, in modeling the bubble and dew lines of the supercritical CO<sub>2</sub> – H<sub>2</sub>O mixture. The GERG-2008 EoS was the most reliable model capturing the density of the supercritical CO<sub>2</sub>-rich mixtures, reporting an average deviation of 1.34 %. Therefore, the combination GERG-2008 + LKP is recommended for NET Power cycle modeling purposes. Only the CPA and GERG-2008 models captured the liquid-like properties of the CO<sub>2</sub>-rich mixture during the compression. This resulted in a specific compression work of 33.02 kJ kg<sup>−1</sup> for GERG-2008, while the PR, SRK, LKP, and PC-SAFT EoSs reported a value up to 1.54, 1.65, 1.53, and 1.70 times higher.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106693"},"PeriodicalIF":3.4,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144280482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Adsorption equilibrium and diffusion coefficient of baicalein and wogonin in supercritical CO2/methanol 黄芩苷和黄芩苷在超临界CO2/甲醇中的吸附平衡及扩散系数

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-10 DOI: 10.1016/j.supflu.2025.106692

Zhongfeng Geng , Mingyu Yan , Yongxin Feng , Huisheng Lv

{"title":"Adsorption equilibrium and diffusion coefficient of baicalein and wogonin in supercritical CO2/methanol","authors":"Zhongfeng Geng , Mingyu Yan , Yongxin Feng , Huisheng Lv","doi":"10.1016/j.supflu.2025.106692","DOIUrl":"10.1016/j.supflu.2025.106692","url":null,"abstract":"<div><div>Baicalein, which exhibits antioxidant activity and wogonin, with anticancer activity, can be extracted from <em>Scutellaria baicalensis</em> Georgi. Their similar structures pose a challenge to further isolation. Supercritical Fluid-Simulated Moving Bed (SF-SMB) can function as a large-scale green separation process based on the adsorptive difference between them. The adsorption data of baicalein and wogonin on ZorBax SB-CN column in supercritical carbon dioxide/methanol were determined using the Elution by Characteristic Points method and could be well fitted by Langmuir model. At lower temperature or lower density of mobile phase, the adsorption capacity increased, with the maximum being 70.10 kg/m<sup>3</sup> for baicalein and 45.25 kg/m<sup>3</sup> for wogonin. The diffusion coefficients of the baicalein and wogonin were determined by the Taylor-Aris peak broadening method. They decreased with higher pressure, lower temperature, or higher density of the mobile phase. This work offers basic data support for the design of SF-SMB systems and industrial platform technology.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106692"},"PeriodicalIF":3.4,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144280481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of supercritical CO₂ treatment on historical cotton, leather, and paper from the Auschwitz-Birkenau State Museum 对奥斯威辛-比克瑙国立博物馆的历史棉、皮革、纸张进行超临界二氧化碳处理的评价

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-07 DOI: 10.1016/j.supflu.2025.106689

Natalia Pydyn , Krzysztof Kraśnicki , Nel Jastrzębiowska , Małgorzata Zimowska , Ewelina Jarek , Jacek Gurgul , Stéphane Bredeau , Hugo Bosbaty , Anna Wawrzyk

{"title":"Assessment of supercritical CO₂ treatment on historical cotton, leather, and paper from the Auschwitz-Birkenau State Museum","authors":"Natalia Pydyn , Krzysztof Kraśnicki , Nel Jastrzębiowska , Małgorzata Zimowska , Ewelina Jarek , Jacek Gurgul , Stéphane Bredeau , Hugo Bosbaty , Anna Wawrzyk","doi":"10.1016/j.supflu.2025.106689","DOIUrl":"10.1016/j.supflu.2025.106689","url":null,"abstract":"<div><div>This study aimed to evaluate the impact of supercritical carbon dioxide (scCO₂) disinfection on the surface integrity of both model and historical materials, including leather, cotton, and paper. The historical samples analyzed belong to the collection of the Auschwitz-Birkenau State Museum (ABSM). Two different process parameteres for scCO₂ treatments were tested. Post-treatment surface conditions were assessed through Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), and X-ray Photoelectron Spectroscopy (XPS). The results revealed notable surface degradation under the tested conditions. Leather samples exhibited delamination, cracking, and material loss. Cotton samples showed surface erosion and discoloration, while historical paper exhibited slight fraying along fiber edges, potentially due to partial binder removal. In conclusion, the scCO₂ treatments applied in this study adversely affected the surface properties of the tested materials. However, these findings are specific to the chosen process parameters, and alternative conditions may yield better compatibility with historical materials. Further research is needed before excluding this method for heritage conservation purposes.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106689"},"PeriodicalIF":3.4,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Supercritical CO₂ extraction of essential oil from dill seeds: Development of emulsions with pea protein and antifungal activity 超临界co2萃取莳萝籽精油：含有豌豆蛋白及抗真菌活性乳剂的研制

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-07 DOI: 10.1016/j.supflu.2025.106691

Miguel Franco-Londoño, Marleny D.A. Saldaña

{"title":"Supercritical CO₂ extraction of essential oil from dill seeds: Development of emulsions with pea protein and antifungal activity","authors":"Miguel Franco-Londoño, Marleny D.A. Saldaña","doi":"10.1016/j.supflu.2025.106691","DOIUrl":"10.1016/j.supflu.2025.106691","url":null,"abstract":"<div><div>This study evaluated supercritical CO<sub>2</sub> (scCO<sub>2</sub>) extraction of essential oil from dill seeds, emulsion formation with plant-based proteins, and determination of their antifungal activity. Extractions were performed at 40–60 °C and 150–350 bar, with maximum yield (13.69 %) achieved at 350 bar and 50 °C. Scaling up the initial seed mass by three and ten times, kinetic models successfully fit the experimental data. In addition, high-intensity ultrasound (HIUS) was used to form an emulsion with dill oil extracts and pea and lentil protein isolates as natural emulsifiers. HIUS (1200 W/1 min) produced smaller, more stable emulsions compared to high-speed homogenization, with pea protein outperforming lentil protein in stability. The emulsions inhibited <em>Fusarium graminearum</em> and <em>Pyrenophora tritici-repentis</em>, wheat pathogens, with minimum inhibitory concentrations of 1.00 µL/mL and 0.25 µL/mL, respectively. Dill extracts rich in carvone showed high antifungal efficacy, emphasizing their potential as natural antifungal agents for wheat protection.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106691"},"PeriodicalIF":3.4,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144280480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of the surfactant and pressure on the supercritical CO2 displacement efficiency in the porous media of geological storage sites 表面活性剂和压力对地质储层多孔介质超临界CO2驱替效率的影响

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-07 DOI: 10.1016/j.supflu.2025.106690

Jeonghyeon Byeon , Soyoung Jeon , Sookyun Wang , Seon-Ok Kim , Minjune Yang , Minhee Lee

{"title":"Effects of the surfactant and pressure on the supercritical CO2 displacement efficiency in the porous media of geological storage sites","authors":"Jeonghyeon Byeon , Soyoung Jeon , Sookyun Wang , Seon-Ok Kim , Minjune Yang , Minhee Lee","doi":"10.1016/j.supflu.2025.106690","DOIUrl":"10.1016/j.supflu.2025.106690","url":null,"abstract":"<div><div>Laboratory scale experiments were conducted to investigate quantitatively the effects of a non-ionic surfactant (Tween 80) and the pore pressure on the supercritical CO<sub>2</sub> (scCO<sub>2</sub>) displacement efficiency in porous media under subsurface storage conditions. The scCO<sub>2</sub> displacement efficiency increased by up to 52 % with the addition of the surfactant to the water (1.0 wt%) at a pore pressure of 8 MPa. The interfacial tension between the water and the scCO<sub>2</sub> decreased by up to 59 % and the contact angle of the water increased to 23 % with the surfactant addition in the water (15 % increase of the capillary number: <em>C</em><sub><em>N</em></sub>). As the pressure increased from 8 MPa to 20 MPa, the interfacial tension decreased by 40 % but the scCO<sub>2</sub> viscosity increased by 60 %, resulting in an 18–28 % increment of the scCO<sub>2</sub> displacement efficiency (27 % and 38 % increase in <em>C</em><sub><em>N</em></sub> and <em>V</em><sub><em>R</em></sub> (viscosity ratio), respectively).</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106690"},"PeriodicalIF":3.4,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144263022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0