Chemical Engineering Science最新文献_第8页

Width distribution and wave characteristics of drainage film formed by jet impingement on a vertical wall

IF 4.1 2区工程技术

Chemical Engineering Science Pub Date : 2025-02-04 DOI: 10.1016/j.ces.2025.121316

Qiuxiang Chen, Hongfei Hu, Xinying Wang, Qiang Li, Haijun Wang

{"title":"Width distribution and wave characteristics of drainage film formed by jet impingement on a vertical wall","authors":"Qiuxiang Chen, Hongfei Hu, Xinying Wang, Qiang Li, Haijun Wang","doi":"10.1016/j.ces.2025.121316","DOIUrl":"10.1016/j.ces.2025.121316","url":null,"abstract":"<div><div>Liquid films generated by jet impingement on vertical walls are commonly encountered in various industrial applications, including cleaning, aerospace, and nuclear reactors. In these applications, an understanding of the distribution patterns and wave characteristics of the drainage film is crucial. In this study, an experimental apparatus was constructed to investigate the flow behavior of drainage films formed by jet impingement on a vertical wall. The width distribution of the drainage film, the spatial variation of the average liquid film thickness, and the transient wave characteristics across different jet Reynolds numbers were investigated. It was observed that the drainage film transitions from turbulent to laminar flow as the flow distance increases. An empirical correlation equation was developed to describe the relationship between film width, flow distance, and jet mass flow rate. The drainage film comprises a thin layer zone and a raised zone, with the liquid film thickness in the thin layer zone being uniformly distributed across the same flow cross-section. Under varying jet Reynolds numbers, the liquid film thickness in the thin layer zone eventually stabilizes at approximately 0.5 mm. With a flow distance from 4<em>d</em> to 28<em>d</em>, liquid film fluctuations in the thin layer zone exhibit a transition from violent to smooth, then to violent. Fluctuations in the thin layer zone are predominantly characterized by ripple waves. For <em>Re<sub>j</sub></em> ≥ 6166, fluctuations in the raised zone shift from being dominated by disturbance waves to ripple waves as the flow distance increases.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"306 ","pages":"Article 121316"},"PeriodicalIF":4.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143084104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Critical role of copper ions and active hydrogen for fast reduction of 4-nitrophenol using CuS mesh

IF 4.1 2区工程技术

Chemical Engineering Science Pub Date : 2025-02-03 DOI: 10.1016/j.ces.2025.121303

Min Gyu Lee , Rengaraj Selvaraj , Younghun Kim

引用次数: 0

Activated coke/metal–organic framework composite as a bio based novel green adsorbent for CO2 capturing

IF 4.1 2区工程技术

Chemical Engineering Science Pub Date : 2025-02-03 DOI: 10.1016/j.ces.2025.121309

Narmin Noorani , Abbas Mehrdad , Behrad Barzegar , Hassan Aghdasinia , Hossein Kazemian

{"title":"Activated coke/metal–organic framework composite as a bio based novel green adsorbent for CO2 capturing","authors":"Narmin Noorani , Abbas Mehrdad , Behrad Barzegar , Hassan Aghdasinia , Hossein Kazemian","doi":"10.1016/j.ces.2025.121309","DOIUrl":"10.1016/j.ces.2025.121309","url":null,"abstract":"<div><div>In this work,novel composites combining activated coke withNH2-MIL-101 (Cr) and NH<sub>2</sub>-UiO-66 (Zr) were synthesized andcharacterized via Fourier Transform Infrared Spectroscopy, thermogravimetric analysis, Scanning Electron Microscopy, X-ray Diffraction, Atomic Force Microscopy, and Brunauer-Emmett-Teller surface area analysis. CO<sub>2</sub> enhanced adsorption capabilities compared to activated pyrolytic coke alone. The isotherms of CO<sub>2</sub> adsorption is an exothermic process.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"306 ","pages":"Article 121309"},"PeriodicalIF":4.1,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143076872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Intelligent prediction of hydrate induction time in oil–water emulsion system based on data-driven and driving force

IF 4.1 2区工程技术

Chemical Engineering Science Pub Date : 2025-02-03 DOI: 10.1016/j.ces.2025.121305

Xiao-Fang Lv , Shu-Kai Chen , Yang Liu , Ming-Guo Peng , Ji-Miao Duan , Chuan-Shuo Wang , Qian-Li Ma , Shi-Dong Zhou , Xiao-Yan Li , Bo-Hui Shi , Shang-Fei Song

{"title":"Intelligent prediction of hydrate induction time in oil–water emulsion system based on data-driven and driving force","authors":"Xiao-Fang Lv , Shu-Kai Chen , Yang Liu , Ming-Guo Peng , Ji-Miao Duan , Chuan-Shuo Wang , Qian-Li Ma , Shi-Dong Zhou , Xiao-Yan Li , Bo-Hui Shi , Shang-Fei Song","doi":"10.1016/j.ces.2025.121305","DOIUrl":"10.1016/j.ces.2025.121305","url":null,"abstract":"<div><div>The prevention of natural gas hydrates is critical to oil and gas flow assurance. The nucleation process of hydrates has always been a research hotspot, yet its randomness makes the induction time of hydrates difficult to predict. To address this issue, this paper uses a Noise Injection Target Autoencoder (NITAE) to augment data, followed by a GBRT model for predicting hydrate induction time. Finally, the gplearn method is employed to generate an empirical equation for the hydrate induction time. The GBRT model achieves an R<sup>2</sup> of 0.9858, with an absolute error within ±0.02, addressing poor prediction performance due to data scarcity. The gplearn-based empirical equation achieves an R<sup>2</sup> of 0.8353, with an error within ±20 %. These results provide a new direction for predicting the hydrate formation induction time in actual field conditions and the prevention of hydrate formation in oil and gas pipelines.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"307 ","pages":"Article 121305"},"PeriodicalIF":4.1,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143084070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Proper definition and mechanism of droplet breakage frequency–Discussion and clarification

IF 4.1 2区工程技术

Chemical Engineering Science Pub Date : 2025-02-03 DOI: 10.1016/j.ces.2025.121302

Sicen Yu , Han Zhou , Shaowei Li , Zhuo Chen , Yundong Wang

引用次数: 0

Averting irreversible transition metal migration in O3-type NaCrO2 via oxygen vacancy defects to enable durable sodium storage

IF 4.1 2区工程技术

Chemical Engineering Science Pub Date : 2025-02-03 DOI: 10.1016/j.ces.2025.121308

Huizi Li , Chenhan Lin , Xiangcong Meng , Yuanqi Yang , Jiaming Deng , Guojie Wu , Jun Liu , Zhicong Shi , Liying Liu

{"title":"Averting irreversible transition metal migration in O3-type NaCrO2 via oxygen vacancy defects to enable durable sodium storage","authors":"Huizi Li , Chenhan Lin , Xiangcong Meng , Yuanqi Yang , Jiaming Deng , Guojie Wu , Jun Liu , Zhicong Shi , Liying Liu","doi":"10.1016/j.ces.2025.121308","DOIUrl":"10.1016/j.ces.2025.121308","url":null,"abstract":"<div><div>Layered transition-metal oxides (Na<sub>x</sub>TMO<sub>2</sub>) are commonly studied as cathodes owing to high theoretical specific capacity and wide Na<sup>+</sup> diffusion channel. The irreversible TM migration during Na<sup>+</sup> de/insertion and the low actual energy density, however, are still the challenging obstacles to the practical application. NaCrO<sub>2</sub> (NCO), one of the typical O3-type layered oxides, has been synthesized via a spray drying-assisted solid-state reaction in this study. It experiences a highly reversible O3<sub>hex</sub>-O’3<sub>mon</sub>-P’3<sub>mon</sub> phase transition during charge/discharge processes, which is primarily attributed to the effectively averted irreversible chromium migration via the in situ constructed oxygen vacancies and the accurately regulated charge cut-off voltage. Oxygen vacancies regulated NCO exhibits outstanding cyclability with capacity retention of 81.9 % after 1000 cycles at 5C in a relatively wide voltage range of 2.3–3.7 V. Our investigation ameliorates the cyclability and energy density of NCO and promotes the potential industrial application for sodium-storage layered oxide cathodes.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"306 ","pages":"Article 121308"},"PeriodicalIF":4.1,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143076874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Correction and validation of the Master-plots method for the thermal cracking kinetic mechanism of solvent-swollen polypropylene

IF 4.1 2区工程技术

Chemical Engineering Science Pub Date : 2025-02-02 DOI: 10.1016/j.ces.2025.121304

Shanglong Zhang , Qiuxiang Yao , Lei He , Wei Wang , Linyang Wang , Duo Ma , Xu Cheng , Ming Sun

{"title":"Correction and validation of the Master-plots method for the thermal cracking kinetic mechanism of solvent-swollen polypropylene","authors":"Shanglong Zhang , Qiuxiang Yao , Lei He , Wei Wang , Linyang Wang , Duo Ma , Xu Cheng , Ming Sun","doi":"10.1016/j.ces.2025.121304","DOIUrl":"10.1016/j.ces.2025.121304","url":null,"abstract":"<div><div>The current research on the pretreatment of polypropylene before thermal cracking and the precise kinetic mechanism function is insufficient. In this study, the thermal cracking characteristics of solvent-swollen polypropylene in toluene, benzene, and tetrahydrofuran were investigated using a thermogravimetric analyzer. A kinetic study of the samples was conducted employing <em>iso</em>-conversional methods, the kinetic compensation effect, the Master-plots method, and the Popescu method. The results demonstrated that the solvent swelling treatment facilitated the thermal cracking of polypropylene at lower temperatures. The average apparent activation energy values of the samples obtained by the Starink (STK) method ranged from 237.66 to 257.98kJ/mol. The kinetic mechanism function of polypropylene at high conversion differs from that at low conversion. For PP-MB, the kinetic mechanism function follows a three-dimensional diffusion model (D5) in the 0.1–0.5 conversion range and lies between a one-dimensional diffusion model (D1) and a two-dimensional diffusion-cylindrical symmetry model (D2) in the 0.5–0.9 conversion range.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"306 ","pages":"Article 121304"},"PeriodicalIF":4.1,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Kinetic study on the solid–liquid diazo coupling reaction with time-varying viscosity

IF 4.1 2区工程技术

Chemical Engineering Science Pub Date : 2025-02-02 DOI: 10.1016/j.ces.2025.121286

Hui-Long Wei , Hong-Ji Lu , Yuan-Hai Su , De-Tao Pan , Zheng-Hong Luo

引用次数: 0

Enhancing *CO intermediate coverage on the CuAlOx catalyst for the CO2 electroreduction to multicarbon products

IF 4.1 2区工程技术

Chemical Engineering Science Pub Date : 2025-02-02 DOI: 10.1016/j.ces.2025.121306

Zhitong Zhang , Rongzhen Chen , Wenxuan Zhang , Yuhang Li , Chunzhong Li

{"title":"Enhancing *CO intermediate coverage on the CuAlOx catalyst for the CO2 electroreduction to multicarbon products","authors":"Zhitong Zhang , Rongzhen Chen , Wenxuan Zhang , Yuhang Li , Chunzhong Li","doi":"10.1016/j.ces.2025.121306","DOIUrl":"10.1016/j.ces.2025.121306","url":null,"abstract":"<div><div>Cu-based electrochemical catalysts are of great potential in converting CO<sub>2</sub> to energy-intensive multicarbon products by utilizing sustainable energy. While there exist challenges in obtaining high selectivity for specific products due to the other unavoidable competitive reaction pathways. Herein, we incorporate the Al element into Cu-based oxide by the simple wet chemical method to obtain the Cu-Al bimetallic oxide with Cu<sup>+</sup>/Cu<sup>0+</sup> active sites. The electrocatalytic measurement shows that the Cu<sub>90</sub>Al<sub>10</sub>O<sub>x</sub> catalyst possesses good electrocatalytic capacity with the highest C<sub>2</sub> Faradic efficiency of 79.3 % at 300 mA cm<sup>−2</sup>. It is demonstrated that the biggest ratio of FE<sub>C2</sub>: FE<sub>C1</sub> is 4.82 in Cu<sub>90</sub>Al<sub>10</sub>O<sub>x</sub>, which is about 4 times of CuO<sub>x</sub> (FE<sub>C2</sub>: FE<sub>C1</sub> = 1.24). The <em>in situ</em> attenuated total reflectance surface-enhanced infrared absorption spectroscopy measurements exhibit that the catalyst can modulate the binding energy and enhance the adsorption ability of the *CO intermediate, which promotes the reaction pathway of multicarbon products and affects the intrinsic catalytic ability.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"306 ","pages":"Article 121306"},"PeriodicalIF":4.1,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143076876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Pilot-scale study of CO2 enrichment effects on anaerobic digestion performance CO2富集对厌氧消化性能影响的中试研究

IF 4.1 2区工程技术

Chemical Engineering Science Pub Date : 2025-02-01 DOI: 10.1016/j.ces.2024.121070

Lucie Castel , Guillaume Cazaudehore , Jean-Baptiste Beigbeder , Rémy Guyoneaud , Christine Peyrelasse

引用次数: 0