Journal of Supercritical Fluids最新文献_第8页

Effect of supercritical carbon dioxide on pore structure and methane adsorption of shale with different particle sizes 超临界二氧化碳对不同粒径页岩的孔隙结构和甲烷吸附的影响

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-06-26 DOI: 10.1016/j.supflu.2024.106343

Liang Wang , Yuechen Zhao , Minxuan Liu , Zihang Song , Yiwei Sun , Sijia Ni , Shenguang Fu , Rongkun Pan

{"title":"Effect of supercritical carbon dioxide on pore structure and methane adsorption of shale with different particle sizes","authors":"Liang Wang , Yuechen Zhao , Minxuan Liu , Zihang Song , Yiwei Sun , Sijia Ni , Shenguang Fu , Rongkun Pan","doi":"10.1016/j.supflu.2024.106343","DOIUrl":"https://doi.org/10.1016/j.supflu.2024.106343","url":null,"abstract":"<div><p>Supercritical carbon dioxide (SCCO<sub>2</sub>) fracturing significantly enhances shale gas recovery, which is influenced by particle size. We soaked shale in SCCO<sub>2</sub> and investigated the impact of SCCO<sub>2</sub> on different particle sizes. Large-particle shales showed the largest percentage changes in specific surface area and total pore volume (54.11 %, 87.87 %; 58.59 %, 76.32 %) followed by small-particle size shales. This trend was also observed in other pore structure parameters. The particle-size effect is: Large-particle shale, with abundant microfractures, enhances SCCO<sub>2</sub> flow and pore alteration. Small-particle shale's high specific surface area facilitates SCCO<sub>2</sub> penetration. Medium-particle shale is less affected due to balanced interactions of these factors. Methane is primarily found in large and medium pores and microfractures. Methane adsorption in shale mainly involves multi-layer adsorption. Following SCCO<sub>2</sub> treatment, pore fractures narrowed, increasing the proportion of methane molecules adsorbed as a single-layer. This study is crucial for evaluating the fracturing effects on shale gas wells.</p></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"212 ","pages":"Article 106343"},"PeriodicalIF":3.4,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141542931","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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Liposomes and niosomes production by a supercritical CO2 assisted process for topical applications: A comparative study 通过超临界二氧化碳辅助工艺生产局部应用的脂质体和niosomes：比较研究

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-06-26 DOI: 10.1016/j.supflu.2024.106342

Lucia Baldino, Domenico Riccardi, Ernesto Reverchon

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Towards a new approach in chiral resolution: Pressurized-CO2 assisted preferential cocrystallization 手性解析的新方法：加压-CO2 辅助优先共晶体化

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-06-24 DOI: 10.1016/j.supflu.2024.106339

Joséphine de Meester , Patrick Layrisse , Mathieu Marchivie , Laurent Collard , Guillaume Wery , Clément Brandel , Yohann Cartigny , Pascale Subra-Paternault , Tom Leyssens , Christelle Harscoat-Schiavo

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Encapsulation of Arthrospira platensis polyphenolic extract using supercritical emulsion-based process 利用超临界乳液法封装节肢动物多酚提取物

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-06-21 DOI: 10.1016/j.supflu.2024.106335

Chiara Bufalini , Ida Palazzo , Alessandro Alberto Casazza , Pier Francesco Ferrari , Roberta Campardelli , Giuseppe Firpo , Patrizia Perego , Ernesto Reverchon

{"title":"Encapsulation of Arthrospira platensis polyphenolic extract using supercritical emulsion-based process","authors":"Chiara Bufalini , Ida Palazzo , Alessandro Alberto Casazza , Pier Francesco Ferrari , Roberta Campardelli , Giuseppe Firpo , Patrizia Perego , Ernesto Reverchon","doi":"10.1016/j.supflu.2024.106335","DOIUrl":"https://doi.org/10.1016/j.supflu.2024.106335","url":null,"abstract":"<div><p><em>Arthrospira platensis</em> polyphenolic natural extracts have several benefits for human health. Due to their instability and reduced shelf-life, these extracts are usually encapsulated. This work analyzed the supercritical emulsion extraction (SEE) process for the production of polymeric nanoparticles loaded with <em>A</em>. <em>platensis</em> polyphenolic extracts. The objective of this work was to evaluate a powdered encapsulation system to overcome the drawbacks of liquid systems, which are those mainly used for microalgae extract stabilization. An optimization study was performed investigating different process parameters and comparing the obtained particles in terms of particle size distribution, morphology, and encapsulation efficiency. The process permitted the successfull production of loaded polymeric nanoparticles with an encapsulation efficiency up to 74 % in the best operating conditions. The SEE process allowed a better control of morphology and particle size distribution of the nanometric particles operating in a continuous mode.</p></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"212 ","pages":"Article 106335"},"PeriodicalIF":3.4,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141543023","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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Corrosion characteristics of Fe, Ni and Ti based alloys near the critical point of water and during supercritical water gasification and oxidation of municipal sludge 铁、镍和钛基合金在水临界点附近以及在超临界水气化和城市污泥氧化过程中的腐蚀特性

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-06-20 DOI: 10.1016/j.supflu.2024.106337

Lili Qian , Wenyu Ma , Dan Fang , Yanmeng Gong , Weijing Liu , Shuang Wang , Shuzhong Wang

{"title":"Corrosion characteristics of Fe, Ni and Ti based alloys near the critical point of water and during supercritical water gasification and oxidation of municipal sludge","authors":"Lili Qian , Wenyu Ma , Dan Fang , Yanmeng Gong , Weijing Liu , Shuang Wang , Shuzhong Wang","doi":"10.1016/j.supflu.2024.106337","DOIUrl":"10.1016/j.supflu.2024.106337","url":null,"abstract":"<div><p>Supercritical water gasification (SCWG) and oxidation (SCWO) were promising technologies for treating municipal sludge; however, corrosion hindered their development. To obtain the candidate material for preheaters, corrosion characteristics of 316, 316 L, Incoloy 800, 825, and TA-10 were investigated at 350 °C and 400 °C. For SCWG and SCWO reactors, corrosion behaviors of 316, Incoloy 800, 825, Inconel 600, 625, and Hastelloy C276 were explored at 450 °C and 520 °C, with and without oxidants. Near the critical point of water, corrosion rates of all materials were below 0.4 mm·a<sup>−1</sup>, with 316 L being the candidate material. According to the pH variation, materials underwent activation (350 °C) and passivation (400 °C) pathways. During SCWG and SCWO, Incoloy 825 and Inconel 625 were prioritized at 450 ℃ and 520 ℃, exhibiting corrosion rates below 0.40 mm·a<sup>−1</sup> and 0.50 mm·a<sup>−1</sup>, respectively. Chemical corrosion dominated and double-layer oxide films (Fe<sub>3</sub>O<sub>4</sub>-FeCr<sub>2</sub>O<sub>4</sub> and NiO-Cr<sub>2</sub>O<sub>3</sub>) formed.</p></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"212 ","pages":"Article 106337"},"PeriodicalIF":3.4,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141464171","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

Generalization of the Wong-Sandler mixing rule to a generic cubic equation of state: Examples of use for systems of industrial interest (Hydrogen, CCUS, refrigeration) 将 Wong-Sandler 混合规则推广到通用立方状态方程：工业系统（氢气、CCUS、制冷）应用实例

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-06-19 DOI: 10.1016/j.supflu.2024.106336

Salaheddine Chabab , Christophe Coquelet , Fabien Rivollet

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Facile fabrication of lightweight and high expanded TPU/PBS bead blend foam with segregated microcellular network for reduced shrinkage and enhanced interface bonding 轻松制造具有隔离微孔网络的轻质高膨胀热塑性聚氨酯/PBS 珠状混合物泡沫，以减少收缩并增强界面粘合力

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-06-14 DOI: 10.1016/j.supflu.2024.106334

Fengkun Sun, Minghao Zhou, Feifan Yi, Haokun Wang, Binyi Chen, Xiangfang Peng, An Huang

{"title":"Facile fabrication of lightweight and high expanded TPU/PBS bead blend foam with segregated microcellular network for reduced shrinkage and enhanced interface bonding","authors":"Fengkun Sun, Minghao Zhou, Feifan Yi, Haokun Wang, Binyi Chen, Xiangfang Peng, An Huang","doi":"10.1016/j.supflu.2024.106334","DOIUrl":"10.1016/j.supflu.2024.106334","url":null,"abstract":"<div><p>The emergence of expanded thermoplastic polyurethane foam beads (ETPU) has expanded the application range of polymer foam materials. However, most of the prepared bead foam products suffer from high shrinkage rate, high density, and poor interfacial bonding, severely affecting the mechanical stability and lightweighting of the products. Herein, this study constructed thermoplastic polyurethane/polybutylene succinate (TPU/PBS) bead blend foams with a segregated microcellular network structure (SMNS) for the first time, where the TPU/PBS continuous phase formed the SMNS and the bead phase was consisted of TPU foam beads. The results showed good interfacial bonding between the continuous and bead phases. By adding PBS to the continuous phase, the shrinkage percentage of TPU/PBS bead blend foam decreased from 79.19 % to 67.31 %, reduced by 15.0 %. In addition, the foam expansion ratio gradually decreased with increasing PBS content, dropping from 12.07 to 9.03. Moreover, TPU/PBS bead blend foams exhibited good energy absorption and mechanical stability without sacrificing thermal insulation performance. This work effectively reduced the shrinkage of TPU based foam materials, offering a simple and economical solution for the preparation of dimensionally stable, well-interfaced, and lightweight polymer foams.</p></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"212 ","pages":"Article 106334"},"PeriodicalIF":3.4,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141395491","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

Corrigendum to “Softwood impregnation by MMA monomer using supercritical CO2” [J. Supercrit. Fluids, 189 (2022), 105712–105723] 对 "使用超临界二氧化碳对软木进行 MMA 单体浸渍 "的更正[《超临界流体学报》，189 (2022)，105712-105723]

IF 3.9 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-06-04 DOI: 10.1016/j.supflu.2024.106323

Lijuan Yang , William Z. Xu , Dicho Zomaya , Paul A. Charpentier

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Supercritical fluid extraction of piquiá (Caryocar villosum (Aubl.) Pers.) pulp: Influence of operating conditions on yield, α-tocopherol content and extract characterization 对 piquiá（Caryocar villosum (Aubl.) Pers.）果肉的超临界流体萃取：操作条件对产量、α-生育酚含量和提取物特征的影响

IF 3.9 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-06-02 DOI: 10.1016/j.supflu.2024.106322

Renato Macedo Cordeiro , Kelly Roberta Pinheiro Pantoja , Leonardo Victor Gomes de Melo , Maria Eduarda Ferraz de Carvalho , Raul Nunes de Carvalho Junior

{"title":"Supercritical fluid extraction of piquiá (Caryocar villosum (Aubl.) Pers.) pulp: Influence of operating conditions on yield, α-tocopherol content and extract characterization","authors":"Renato Macedo Cordeiro , Kelly Roberta Pinheiro Pantoja , Leonardo Victor Gomes de Melo , Maria Eduarda Ferraz de Carvalho , Raul Nunes de Carvalho Junior","doi":"10.1016/j.supflu.2024.106322","DOIUrl":"10.1016/j.supflu.2024.106322","url":null,"abstract":"<div><p><em>Caryocar villosum</em> (Aubl.) Pers. is a fruit native to the Amazon region, popularly known as piquiá. The supercritical extraction process of piquiá pulp was investigated in this work, considering the influence of temperature, pressure and solvent density on the extraction yield. The quality of the extract was evaluated in terms of fatty acid profile, functional quality indices, physicochemical characterization and α-tocopherol content. The extraction yield resulted to be greater with increasing pressure in each isotherm. The highest extraction yield was 62.74 %, while the lowest was 44.01 %. The main fatty acids observed in the extracts obtained under all operating conditions were oleic and palmitic. The results indicated that piquiá extract obtained via supercritical CO<sub>2</sub> presents itself as a potential product to be explored for applications in the food, cosmetic and pharmaceutical industries due to its composition and functional quality.</p></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"212 ","pages":"Article 106322"},"PeriodicalIF":3.9,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141282017","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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Alcogel formation analysis: An important step for scCO2 aerogel production 气凝胶形成分析：生产二氧化碳气凝胶的重要步骤

IF 3.9 3区工程技术

Journal of Supercritical Fluids Pub Date : 2024-05-29 DOI: 10.1016/j.supflu.2024.106321

Cristiana S.A. Bento, Beatriz Agostinho, Alberto Teixeira, Marco S. Reis, Hermínio C. de Sousa, Mara E.M. Braga

{"title":"Alcogel formation analysis: An important step for scCO2 aerogel production","authors":"Cristiana S.A. Bento, Beatriz Agostinho, Alberto Teixeira, Marco S. Reis, Hermínio C. de Sousa, Mara E.M. Braga","doi":"10.1016/j.supflu.2024.106321","DOIUrl":"https://doi.org/10.1016/j.supflu.2024.106321","url":null,"abstract":"<div><p>The production of biopolymeric aerogels, for tissue engineering, currently involves three steps: gelation (hydrogel), solvent exchange (alcogel), and supercritical drying (aerogel). The alcogel formation, the longest step, can be optimised by exploring high pressures/mild temperatures. This work aimed to integrate/optimise the production process of alginate/gelatine aerogels, by performing solvent exchange and drying continuously within the same equipment. High-pressure solvent exchange (HPSE) was compared with the conventional method by analysing the alcogel and solvent with two complementary analytical techniques: Differential Scanning Calorimetry (DSC) and Refractive Index (RI). HPSE resulted in a faster solvent exchange, reducing 86 % of the processing time. The solvent exchange conditions did not significantly affect the aerogel structure, density, porosity, and surface area. Still, HPSE and the drying time influenced pore distribution and decreased mechanical properties. The drying stage was optimised to 2 h, showing the feasibility of integrating solvent exchange and supercritical drying for alginate-gelatine aerogels production.</p></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"211 ","pages":"Article 106321"},"PeriodicalIF":3.9,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0896844624001566/pdfft?md5=12684a9001fa205a783738341a62e2b8&pid=1-s2.0-S0896844624001566-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141244838","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}

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