Journal of Supercritical Fluids最新文献_第5页

Green preparation of biodegradable poly (butylene adipate-co-terephthalate) foam modified with bio-based epoxidized cardanol using supercritical fluid foaming 利用超临界流体发泡技术绿色制备生物基环氧硬脂醇改性的可生物降解聚（己二酸丁二醇酯-对苯二甲酸丁二醇酯）泡沫塑料

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-08-23 DOI: 10.1016/j.supflu.2024.106391

Jie Yuan, Kun Xue, Xiulu Gao, Yichong Chen, Ling Zhao, Dongdong Hu

{"title":"Green preparation of biodegradable poly (butylene adipate-co-terephthalate) foam modified with bio-based epoxidized cardanol using supercritical fluid foaming","authors":"Jie Yuan, Kun Xue, Xiulu Gao, Yichong Chen, Ling Zhao, Dongdong Hu","doi":"10.1016/j.supflu.2024.106391","DOIUrl":"10.1016/j.supflu.2024.106391","url":null,"abstract":"<div>Poly (butylene adipate-co-terephthalate) (PBAT) foam is a potential alternative to conventional packaging materials. However, its wide adoption is hindered by issues such as low foaming–expansion ratios and shrinkage. A series of biodegradable epoxidized cardanol (EC)-modified PBAT foams were prepared using supercritical carbon dioxide (CO2) foaming. The addition of EC enhanced the crystallisation temperature and stiffness, and improved the rheological properties, thereby promoting polymer foamability. When the EC content reached 0.6 wt%, lightweight foams with the highest initial expansion ratio (Rv) of 48.4 were produced before shrinkage. N2 was introduced as a co-blowing agent to reduce shrinkage of the PBAT foams, resulting in the production of a microcellular foam with a stable Rv of 12.9. EC improved the foamability of PBAT while also introducing the co-blowing agent N2 to resist shrinkage. These findings can serve as valuable insights for the large-scale production of lightweight biodegradable foams.</div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"214 ","pages":"Article 106391"},"PeriodicalIF":3.4,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142097068","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

Advancements in conventional and supercritical CO2 extraction of Moringa oleifera bioactives for cosmetic applications: A review 传统和超临界二氧化碳萃取美容用辣木籽生物活性成分的进展：综述

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-08-22 DOI: 10.1016/j.supflu.2024.106388

Júlia C. Kessler - , Isabel M. Martins , Yaidelin A. Manrique , Alírio E. Rodrigues , Maria Filomena Barreiro , Madalena M. Dias

{"title":"Advancements in conventional and supercritical CO2 extraction of Moringa oleifera bioactives for cosmetic applications: A review","authors":"Júlia C. Kessler - , Isabel M. Martins , Yaidelin A. Manrique , Alírio E. Rodrigues , Maria Filomena Barreiro , Madalena M. Dias","doi":"10.1016/j.supflu.2024.106388","DOIUrl":"10.1016/j.supflu.2024.106388","url":null,"abstract":"<div>Moringa oleifera L. extracts (Mo) have attracted attention as a sustainable and effective alternative to synthetic ingredients for cosmetic formulations. The unique and diverse phytochemical profile of the Mo tree enhances the quality and appeal of commercial products, as evidenced by numerous studies and patents. Supercritical carbon dioxide extraction (SFE-CO2) is particularly advantageous for this purpose, offering enhanced thermostability and selectivity of extracted compounds compared to conventional methods. This review examines the safety and efficacy of Mo seed, leaf, and root extracts as cosmetic ingredients, focusing on their bioavailability and performance by considering the thermodynamics and operational benefits of SFE-CO2. The collected data highlights the method’s efficiency in terms of the total extraction yield and the recovery of target compounds from Mo, providing insights from optimisation studies and linking the solvation power of supercritical CO2 with the significant non-polar and low-polar compounds present in Mo extracts.</div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"214 ","pages":"Article 106388"},"PeriodicalIF":3.4,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0896844624002237/pdfft?md5=5e983ad8cc9d243bcb3b8a7aecab4d67&pid=1-s2.0-S0896844624002237-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142083256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental and numerical study on the heat transfer deterioration of supercritical nitrogen in a vertical tube 垂直管中超临界氮气传热恶化的实验和数值研究

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-08-17 DOI: 10.1016/j.supflu.2024.106376

Runfeng Xiao , Jing Cao , Liang Chen , Zixin Zhang , Bin Ye , Yijie Cai , Yu Hou

{"title":"Experimental and numerical study on the heat transfer deterioration of supercritical nitrogen in a vertical tube","authors":"Runfeng Xiao , Jing Cao , Liang Chen , Zixin Zhang , Bin Ye , Yijie Cai , Yu Hou","doi":"10.1016/j.supflu.2024.106376","DOIUrl":"10.1016/j.supflu.2024.106376","url":null,"abstract":"<div>Supercritical cryogenic fluids exhibit significant potential for diverse applications across various industries, including liquid air energy storage, high-temperature superconducting cables, and hypersonic vehicle engine cooling. Heat transfer deterioration (HTD) poses a substantial risk to the system safety. In this study, we constructed an experimental system and performed numerical simulations to illustrate buoyancy (Bu) and thermal acceleration (Ac) effects on HTD of supercritical nitrogen (SCN2). The newly established thresholds for buoyancy and thermal acceleration (Buth=1.8×10−4 and Acth=4.4×10−5), considering pseudo two-phase characteristics, can effectively capture buoyancy and thermal acceleration in the first and second HTD regions. The first region is influenced by the combined effect of buoyancy and thermal acceleration, while the second region is mainly influenced by thermal acceleration. The new correlations and thresholds accurately predict the occurrence of HTD and the peak position. The experimental and simulation results contribute to understanding the impact of buoyancy and thermal acceleration on SCN2 HTD.</div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"214 ","pages":"Article 106376"},"PeriodicalIF":3.4,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142097191","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

High-pressure phase equilibrium for carbon dioxide solubility with biofuels: Experimental and thermodynamic insights in 2,5-dimethylfuran and methyl levulinate 生物燃料中二氧化碳溶解度的高压相平衡：2,5-二甲基呋喃和乙酰丙酸甲酯的实验和热力学见解

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-08-13 DOI: 10.1016/j.supflu.2024.106378

Amal Ayad , Mojgan Ebrahiminejadhasanabadi , Wayne Michael Nelson , Latifa Negadi , Paramespri Naidoo

引用次数: 0

Enhancing anti-diabetic activity and reducing cytotoxicity of T. crispa extracts through sustainable approach of pressurized hot water extraction and micelle-mediated separation 通过加压热水萃取和胶束介导分离的可持续方法提高酥树蕨提取物的抗糖尿病活性并降低其细胞毒性

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-08-13 DOI: 10.1016/j.supflu.2024.106377

Kunat Suktham , Suvimol Surassmo , Chaisak Chansriniyom , Motonobu Goto , Artiwan Shotipruk

{"title":"Enhancing anti-diabetic activity and reducing cytotoxicity of T. crispa extracts through sustainable approach of pressurized hot water extraction and micelle-mediated separation","authors":"Kunat Suktham , Suvimol Surassmo , Chaisak Chansriniyom , Motonobu Goto , Artiwan Shotipruk","doi":"10.1016/j.supflu.2024.106377","DOIUrl":"10.1016/j.supflu.2024.106377","url":null,"abstract":"<div>In this study, pressurized hot water extraction (PHWE) was evaluated for the recovery of anti-diabetic borapetoside C (BPC) from T. crispa stems. The maximum BPC extraction efficiency obtained at 100 ˚C, 2.5 MPa and 5.0 mL/min was considerably higher than that obtained by the conventional methods. Under optimized conditions, one-site kinetic desorption model could most accurately describe the PHWE behavior, suggesting an intra-particle diffusion-controlled mechanism. The undesirable compounds in the extract were further removed by micelle-mediated separation (MMS), in which Tween 80 was added, followed by NaCl addition and slight temperature increase to induce phase separation. At the most suitable MMS condition, with 0.028 mM Tween 80, 0.4 M NaCl, at 85 ˚C, the majority (87 %) of BPC could be recovered in the aqueous phase after 40 min. After MMS, the resulting extract exhibited low cytotoxicity against L6 and HepG2 cells while maintaining significant α-glucosidase and α-amylase inhibition activities.</div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"214 ","pages":"Article 106377"},"PeriodicalIF":3.4,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021314","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

Study of potassium deactivation rule in supercritical water gasification of coal with K2CO3 as catalyst 以 K2CO3 为催化剂的超临界水煤气化过程中钾失活规律研究

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-08-12 DOI: 10.1016/j.supflu.2024.106375

Chenchen Zhou, Hui Jin, Zhiwei Ge, Liejin Guo

{"title":"Study of potassium deactivation rule in supercritical water gasification of coal with K2CO3 as catalyst","authors":"Chenchen Zhou, Hui Jin, Zhiwei Ge, Liejin Guo","doi":"10.1016/j.supflu.2024.106375","DOIUrl":"10.1016/j.supflu.2024.106375","url":null,"abstract":"<div>K2CO3 has a good catalytic effect in supercritical water gasification (SCWG) of coal. However, researchers have mainly focused on the effects of coal gasification, while the potassium mass transfer process has rarely been studied. Herein, the distribution pattern of potassium during the SCWG of coal and the factors influencing potassium deactivation were experimentally obtained. Through the detection and analysis of the residues after the SCWG of coal, it is found that potassium only exists in the forms of liquid and solid and the potassium in the residue exists in the form of insoluble potassium silica alumina, which does not have a catalytic effect. At a high reaction temperature, the reaction time is longer, and when the silica–aluminum content in coal is higher, the potassium deactivate rate is also higher. The molar contents of potassium and aluminum in the coal gasification residue are linearly correlated, with a ratio of approximately 1:1. Reducing the aluminum content in coal can effectively reduce potassium deactivation. In the SCWG of the Hebi coal, the deactivation rate of potassium reduced from 80.88 % to 17.75 % after acid washing. In the SCWG of the ash-free coal, the carbon gasification efficiency (CE) and potassium content in the liquid were above 95 % after each experiment, there was no deactivation of potassium, and the residual potassium solution remained catalytically effective after the SCWG of the ash-free coal.</div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"214 ","pages":"Article 106375"},"PeriodicalIF":3.4,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141978449","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

Density and viscosity of orange peel oil saturated with pressurized CO2 加压二氧化碳饱和橙皮油的密度和粘度

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-08-08 DOI: 10.1016/j.supflu.2024.106373

Mariana Fortunatti-Montoya , Pablo E. Hegel , Selva Pereda

引用次数: 0

Ultrasound pretreatment combined with supercritical CO2 extraction of Costus spicatus leaf extract 超声波预处理与超临界二氧化碳萃取相结合的木贼叶提取物

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-08-07 DOI: 10.1016/j.supflu.2024.106372

Thaíris Karoline Silva Laurintino , Thuany Naiara Silva Laurintino , Deise Parolo Tramontin , Alexandre Bella Cruz , Debora Wainstein Paiva , Ariovaldo Bolzan , Marintho Bastos Quadri

{"title":"Ultrasound pretreatment combined with supercritical CO2 extraction of Costus spicatus leaf extract","authors":"Thaíris Karoline Silva Laurintino , Thuany Naiara Silva Laurintino , Deise Parolo Tramontin , Alexandre Bella Cruz , Debora Wainstein Paiva , Ariovaldo Bolzan , Marintho Bastos Quadri","doi":"10.1016/j.supflu.2024.106372","DOIUrl":"10.1016/j.supflu.2024.106372","url":null,"abstract":"<div>This work aimed to obtain extracts from Costus spicatus leaves through ultrasonic pretreatment in supercritical CO2 extraction (UAE+SFE). A central composite design was used to evaluate the influence of temperature (36–64 °C), pressure (8–20 MPa), and cosolvent (0–20 %w) in terms of overall yield and chemical composition. Morphology using scanning electron micrograph (SEM), total phenolic content, content of total flavonoid, antioxidant (DPPH and ABTS), and antibacterial activities were evaluated. UAE+SFE showed a more notable overall yield, with 6.97 %. In the SEM, the sample treated with UAE+SFE significantly impacted tissue structures, improving the selectivity of SFE regarding linolenic acid, leading to a maximum composition value of 62.5 % area according to GC-MS. Furthermore, the UAE+SFE extract exhibited strong antimicrobial activity compared to the extract obtained by the SFE technique. Based on the pioneering results, the bioactives obtained are promising and interesting for application in the cosmetic, pharmaceutical, and food industries.</div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"213 ","pages":"Article 106372"},"PeriodicalIF":3.4,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141915316","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

Effect of mild subcritical fluid treatment on meat quality of farmed large yellow croakers 温和亚临界流体处理对养殖大黄鱼肉质的影响

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-08-05 DOI: 10.1016/j.supflu.2024.106370

Wenjie Wang , Danqing Jiang , Xiubiao Chen , Xuxia Zhou , Yuting Ding

引用次数: 0

Investigation of supercritical CO2 corrosion behavior of X80 carbon steel in pipelines: An in situ experimental and DFT study 管道中 X80 碳钢的超临界二氧化碳腐蚀行为研究：现场实验和 DFT 研究

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-08-05 DOI: 10.1016/j.supflu.2024.106371

Xiaodan Wang , Pu Yang , Ruidong Li , Guohu Tong , Jukai Chen , Yueshe Wang

{"title":"Investigation of supercritical CO2 corrosion behavior of X80 carbon steel in pipelines: An in situ experimental and DFT study","authors":"Xiaodan Wang , Pu Yang , Ruidong Li , Guohu Tong , Jukai Chen , Yueshe Wang","doi":"10.1016/j.supflu.2024.106371","DOIUrl":"10.1016/j.supflu.2024.106371","url":null,"abstract":"<div>The electrochemical corrosion behavior of X80 carbon steel was investigated in a supercritical CO2 (sCO2) environment at 60 ℃ and 9 MPa, by in-situ experiments and density functional theory (DFT) calculations, revealing the corrosion mechanism. For in situ electrochemical measurements, two novel CO2-rich and H2O-rich cells were developed to replace the traditional three-electrode cell. Electrochemical impedance spectroscopy revealed distinct differences in the corrosion behavior between CO2-rich and H2O-rich environments during the later stages of testing. In H2O-rich environments, as corrosion time increased, the corrosion product layer gradually changed from porous to dense, eventually forming a protective layer. In CO2-rich environments, corrosion occurs mainly in areas where water condenses to form FeCO3. Simultaneously, microscopic calculations provided evidence for the three-step sCO2 hydrolysis mechanism and the formation of FeCO3 products.</div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"213 ","pages":"Article 106371"},"PeriodicalIF":3.4,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141915317","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