Chinese Journal of Chemical Engineering最新文献

{"title":"Scalable electrosynthesis of propionic acid via 1-propanol oxidation on nickel hydroxide electrodes in a diaphragmless electrolytic cell","authors":"Nan Zhang,&nbsp;Shan Ji,&nbsp;Xuyun Wang,&nbsp;Xianguo Ma,&nbsp;Vladimir Linkov,&nbsp;Rongfang Wang,&nbsp;Hui Wang","doi":"10.1016/j.cjche.2026.01.014","DOIUrl":"10.1016/j.cjche.2026.01.014","url":null,"abstract":"<div><div>Biomass valorization <em>via</em> electrosynthesis offers an eco-friendly route under mild conditions. Herein, propionic acid from 1-propanol was produced on nickel hydroxide electrodes (Ni(OH)₂/NF) using the 1-propanol precursor in a diaphragmless electrolytic cell. Systematic optimization of key operational parameters—including current density, NaOH concentration, 1-propanol concentration, and reaction time—was carried out to maximize product efficiency. Under optimal operating conditions (0.35 mol·L⁻¹ of 1-propanol, 0.5 mol·L⁻¹ of NaOH, 40 mA·cm⁻² of current density and 5 h of reaction time), this multivariate strategy achieved a Faradaic efficiency of 94.11% and a yield of 70.42% for propionic acid. Notably, scalability was validated through gram-scale synthesis in a single batch, producing tens of grams of propionic acid and highlighting the practical viability of the diaphragmless configuration. Combined electrochemical analyses and density functional theory (DFT) calculations elucidate the reaction mechanism, revealing that Ni(OH)₂/NF facilitates the dehydrogenation and oxidative coupling steps critical to selective propionic acid formation. This study not only establishes a green and efficient route for value-added chemical production from biomass-derived alcohols but also demonstrates the industrial potential of diaphragmless electrolytic systems.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"95 ","pages":"Pages 90-101"},"PeriodicalIF":3.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148573725","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}

{"title":"CFD analysis of particle deposition characteristics in the human upper respiratory tract: A study on multifactorial regulation laws under steady-state/cyclic breathing conditions","authors":"Haiyun Jing,&nbsp;Zhuangzhuang Yu,&nbsp;Shiyu Hu,&nbsp;Jingen Xia,&nbsp;Yang Xiang","doi":"10.1016/j.cjche.2026.01.023","DOIUrl":"10.1016/j.cjche.2026.01.023","url":null,"abstract":"<div><div>Particle deposition in the respiratory tract involves interdisciplinary dynamic processes such as fluid mechanics, biomedicine, and materials science, and is of great significance for disease transmission (<em>e.g</em>., SARS-CoV-2 aerosol infection), toxicant exposure (<em>e.g</em>., cigarette carcinogens), and pulmonary drug delivery (<em>e.g</em>., asthma therapeutics). In this study, the geometric structure of the upper respiratory tract from the nasal vestibule to the tracheal bifurcation was reconstructed using clinical computed tomography scan data and the structural repair was completed. Then, we adopted a computational fluid dynamics framework based on the Eulerian–Lagrangian approach to simulate the transport and deposition processes of aerosols. The results show that the simulation results are basically consistent with the experimental data, which confirms the reliability of the proposed model. The positions of deposition hotspots mainly depend on structural features. For example, areas with abrupt changes in the shape and direction of the flow channel, such as the nasal vestibule, piriform fossae, and laryngeal constriction, are prone to form deposition hotspots, which are related to the vortex intensity. The particle deposition rules under steady-state and cyclic breathing conditions are obtained through the analysis using multifactorial design of experiments and response surface methodology. Under steady-state breathing conditions, the particle size dominates the influence on deposition efficiency (order of influencing factors: particle size &gt; flow rate &gt; particle density), and there is a significant synergistic effect between particle size and flow rate. Under cyclic breathing conditions, respiratory frequency and inspiration-to-expiration ratio have equivalent effects on regulating inspiratory time, with a strong coupling effect between them, while post-inspiration breath-hold has a limited effect on improving deposition efficiency. The results of this study have laid a solid theoretical foundation for aspects such as precise drug delivery and respiratory protection.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"95 ","pages":"Pages 272-287"},"PeriodicalIF":3.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148573655","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}

{"title":"Prediction of pyrolysis products distribution for end-of-life wind turbine blades using attention-based feature fusion","authors":"Qiliang Zhang,&nbsp;Dekai Jiang,&nbsp;Chenxu Li,&nbsp;Baoxin Zhang,&nbsp;Bin Hu,&nbsp;Mingxin Xu,&nbsp;Kai Li,&nbsp;Qiang Lu","doi":"10.1016/j.cjche.2026.02.008","DOIUrl":"10.1016/j.cjche.2026.02.008","url":null,"abstract":"<div><div>Pyrolysis can effectively recover glass fibers from end-of-life wind turbine blades (WTBs) while producing reusable pyrolysis oil and syngas. The nonlinear dynamics involved in the pyrolysis of end-of-life WTBs bring challenges in accurately predicting the product distribution. This paper proposes an attention-based feature fusion prediction framework for pyrolysis product distribution of end-of-life WTBs. Firstly, a physics-informed neural network (PINN) incorporating the Arrhenius equation is proposed. Then, a product distribution prediction model for the fast pyrolysis of end-of-life WTBs is developed by integrating the extreme gradient boosting algorithm, multilayer perceptron, and the PINN, with an attention mechanism introduced to dynamically weight their output. Based on this, a dynamic weighted feature fusion algorithm is proposed to predict the pyrolysis product distribution of end-of-life WTBs. Finally, the superiority of the proposed method is demonstrated through fast pyrolysis experiments of end-of-life WTBs. The experimental results show that the proposed method achieves a notable improvement in prediction accuracy, reducing the root mean square error and mean absolute error by 86% to 99% compared to existing approaches.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"95 ","pages":"Pages 1-9"},"PeriodicalIF":3.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148573662","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}

{"title":"Solubility Behavior of Torasemide (Form I) in Eleven Pure Solvents: Experimental Determination and Molecular Interpretation of Solvent Effects","authors":"Yueru Wang, Xiaoxiao Han, Yu Li, Tao Li, Baozeng Ren","doi":"10.1016/j.cjche.2026.06.030","DOIUrl":"https://doi.org/10.1016/j.cjche.2026.06.030","url":null,"abstract":"","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148861115","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}

{"title":"A highly robust fluorine-functionalized {Sn2}-organic framework for efficiently catalyzing CO2-Epoxide cycloaddition and Knoevenagel condensation","authors":"Tao Zhang,&nbsp;Ruijing Wu,&nbsp;Guanyi Guo,&nbsp;Haibo Cui,&nbsp;Yurong Liang,&nbsp;Xiutang Zhang","doi":"10.1016/j.cjche.2026.03.002","DOIUrl":"10.1016/j.cjche.2026.03.002","url":null,"abstract":"<div><div>Addressing energy crisis and environmental issues, fixing carbon dioxide (CO₂) into value-added cyclic carbonates <em>via</em> cycloaddition reactions is the most energy-efficient technology for overcoming the chemical and thermodynamic stability of CO₂. Herein, we report a robust fluorine-modified nanoporous framework of {[Sn₂(F₂-TPTA)₂(H₂O)₂]·3DMF}_<em>n</em> (NUC-165) (F₂-H₄TPTA = 2′,3′-difluoro-[1,1':4′,1″-terphenyl]-3,3″,5,5″-tetracarboxylic acid). In NUC-165, scarcely reported binuclear clusters of [Sn₂(COO)₈(H₂O)₂] unit are propagated <em>via</em> fluorine-functionalized organic modules of F₂-TPTA⁴⁻ into a three-dimensional structure with a void volume of 45.2%, which displays three kinds of windows: 0.63 nm × 0.90 nm, 0.62 nm × 0.92 nm, and 0.65 nm × 0.6 nm along <em>a</em>, <em>b</em> and <em>c</em> axis. Interestingly, strong electron-withdrawing fluorine atoms are richly distributed the inner surface of the formed void volumes in the thermal activated NUC-165a, resulting in a Lewis acid-base functionalized hybrid material. Performed catalytic experiments confirmed that NUC-165a with the aid of <em>n</em>-Bu₄NBr cocatalyst could highly catalyze the cycloaddition of CO₂ with epoxides under relatively mild conditions (<em>P</em>_CO2 = 0.9 MPa and <em>T</em> = 80 °C), which should be due to that rich open Sn⁴⁺ sites and electron-withdrawing fluorine groups could separately activate the substrates of epoxides and CO₂. In addition, Knoevenagel condensation of aldehydes and malononitrile also could be catalyzed, which should be because open Sn⁴⁺ sites and electron-withdrawing fluorine groups could activate aldehydes and malononitrile, respectively. Therefore, this work may provide an insight into improving the specific performance of microporous MOFs through pre-functionalization on employed organic modules.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"95 ","pages":"Pages 60-68"},"PeriodicalIF":3.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148573723","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}

{"title":"Molten salt-derived biochar with tunable pore architecture as non-metallic catalysts for acetylene hydrochlorination","authors":"Jun-Long Li,&nbsp;Dong-Yang Zhao,&nbsp;Jia-Yi Dong,&nbsp;Mian Hu,&nbsp;Jia Zhao,&nbsp;Zhiyan Pan,&nbsp;Jun Zhao,&nbsp;Xiaonian Li,&nbsp;Zhong-Ting Hu","doi":"10.1016/j.cjche.2026.03.004","DOIUrl":"10.1016/j.cjche.2026.03.004","url":null,"abstract":"<div><div>Biochar-based catalysts show significant potential to replace toxic mercuric chloride in acetylene hydrochlorination. However, the mechanistic role of their non-metallic active sites remains scarcely investigated, particularly regarding the synergistic interplay between pore architecture and surface functionalities. Herein, a series of biochar based catalysts with rich microstructures were successfully prepared by using molten salt as medium, which were used in acetylene hydrochlorination. The method of preparing biochar by liquid medium of molten salt was optimized by adjusting the ratio of terpolymer salts, mesh number, constant temperature duration, reaction temperature and heating rate, <em>etc</em>. The materials were analyzed by BET, XRD, TGA, SEM and TEM. The results showed that the biochar materials had abundant pore structure and adjustable pore volume, and it was found that biochar with larger pore volume showed higher acetylene hydrochlorination conversion at the same pore size of 1.8 nm. Analysis suggests that biochar with large pore volume has more carbon “chambers” at the micropore size, which effectively promotes the “one-to-one” pairing of C₂H₂ and HCl molecules. This work found that the catalytic performance of acetylene hydrochlorination could be improved effectively by microstructural regulation of nonmetallic catalysts.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"95 ","pages":"Pages 41-49"},"PeriodicalIF":3.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148573660","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}

{"title":"Gas–liquid countercurrent absorption process based on micro-scale helical liquid-bridge flow","authors":"Liang Yuan,&nbsp;Xiaoxuan Chen,&nbsp;Haifeng Cong,&nbsp;Xingang Li","doi":"10.1016/j.cjche.2026.03.013","DOIUrl":"10.1016/j.cjche.2026.03.013","url":null,"abstract":"<div><div>Achieving efficient gas–liquid countercurrent operation in microreactors faces multiple technical challenges, primarily due to the difficulty in forming stable countercurrent flow naturally, along with high flow resistance and substantial pressure drop. This study proposes a novel microscale gas–liquid countercurrent absorption method based on helical liquid-bridge flow. Micron-scale helical structures are employed to induce stable semi-constrained liquid-bridges, enabling controlled countercurrent contact. By adjusting helical parameters and feed configurations, the method optimizes liquid film distribution, residence time, and interfacial renewal, thereby enhancing mass transfer. Experiments in a CO₂–water system showed that the volumetric mass transfer coefficient increased by 1–2 orders of magnitude compared to conventional devices. A dimensionless correlation for the liquid-phase mass transfer coefficient was developed with less than 15% deviation. This work provides a theoretical and technical foundation for developing efficient microscale gas–liquid absorption devices, with broad applicability in process intensification and system integration of microchemical engineering.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"95 ","pages":"Pages 226-239"},"PeriodicalIF":3.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148588612","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}

{"title":"Combining multiscale decomposition with time-series modeling: An approach for petrochemical processes","authors":"Mengjie Luo,&nbsp;Mengxuan Zhang,&nbsp;Xiaogang Shi,&nbsp;Xingying Lan,&nbsp;Yongdong Liu,&nbsp;Wei Li","doi":"10.1016/j.cjche.2026.03.001","DOIUrl":"10.1016/j.cjche.2026.03.001","url":null,"abstract":"<div><div>Accurately predicting key product features is essential for process optimization and safety in petrochemical processes. However, conventional data-driven AI models often struggle to adequately capture the strong nonlinearity and multi-scale characteristics of these systems. To address this challenge, this paper proposes a multi-scale prediction framework that integrates variational mode decomposition (VMD), attention mechanisms, and temporal convolutional networks (TCN), referred to as DATCN. This framework facilitates the extraction of multi-scale features across temporal, spatial, and frequency domains, enabling cross-scale interaction modeling in complex processes. Comparative experiments on the Tennessee Eastman (TE) benchmark and industrial fluid catalytic cracking (FCC) long-term time-series datasets demonstrate that the proposed model achieves superior prediction accuracy (RMSE reduced by 24.75% to 37.26% <em>versus</em> other deep-learning models). The results demonstrate the framework’s capability to address both nonlinear dynamics and spatiotemporal heterogeneity, offering a promising solution for intelligent optimization in petrochemical production.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"95 ","pages":"Pages 313-327"},"PeriodicalIF":3.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148573653","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}

{"title":"Preparation of polystyrene microspheres by suspension polymerization: A review","authors":"Yafeng Xiao,&nbsp;Yiqing Zhang,&nbsp;Zhongtian Dong,&nbsp;Jun Zhou,&nbsp;Shaoping Ma,&nbsp;Shuang Wu,&nbsp;Zhihui Wang,&nbsp;Qinghua Zhang,&nbsp;Chao Yang","doi":"10.1016/j.cjche.2026.01.022","DOIUrl":"10.1016/j.cjche.2026.01.022","url":null,"abstract":"<div><div>Polystyrene microspheres are widely utilized in automobiles, electronics and packaging due to their diverse characteristics, which are highly dependent on particle size. Traditionally, with the manipulation of suspension polymerization parameters, different sizes of microspheres ranging from 10 to 1000 μm can be prepared, with the coefficient of variation (CV) of particle size distribution ranging from 20% to 50%. However, emerging application fields such as pharmaceuticals and biotechnology have high demands for stability and require a narrow particle size distribution. To address this, researchers have proposed novel approaches. This review summarizes both well-developed traditional methods and emerging techniques for particle size control, analyzing their underlying mechanisms. The aim is to provide a reference for the development of preparation methods with controllable particle size. Firstly, the mechanisms of traditional particle size control methods, including optimization of stirring parameters, design of dispersant systems, regulation of oil-to-water ratio, utilization of salt effects and temperature control, are analyzed, and the mechanism of these methods in modulating microspheres size is concluded. Secondly, novel techniques such as membrane emulsification, microfluidic technology and acoustic field-assisted methods in controlling particle size distribution and enhancing reaction efficiency are introduced, mainly focused on their principle characteristics and potential application prospects. Finally, the future development of suspension polymerization technique in preparation of polystyrene microspheres is discussed.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"95 ","pages":"Pages 288-301"},"PeriodicalIF":3.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148573656","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}

{"title":"MnO nanoflower network anchored on lamellar carbon: A high-performance cathode for aqueous zinc-ion batteries","authors":"Menghua Li,&nbsp;Xinzheng Liu,&nbsp;Changhui Sun,&nbsp;Xiaorong Cao,&nbsp;Qiqi Han,&nbsp;Yiye Kong,&nbsp;Caixia Xu","doi":"10.1016/j.cjche.2026.03.007","DOIUrl":"10.1016/j.cjche.2026.03.007","url":null,"abstract":"<div><div>Aqueous zinc-ion batteries (AZIBs) have emerged as a promising alternative in the field of energy storage due to their lower cost, enhanced safety, and environmental friendliness. However, the development of efficient and stable cathode materials remains a significant challenge. In this work, the MnO nanoflower network anchored on a two-dimensional lamellar carbon (MnO NN/LC) was synthesized <em>via</em> metal-organic framework-derived method. The lamellar carbon serving as the 2D conductive matrix facilitates faster ion diffusion and electron transfer, resulting in superior zinc storage performance. MnO NN/LC displays larger reversible capacity, superior rate capability, and much higher cycling stability compared to traditional bulky MnO/C (B-MnO/C) material. Especially, the MnO NN/LC demonstrates long-term cycling stability with the retained capacity as high as 104.2 mA·h·g⁻¹ after 1400 cycles at 1 A·g⁻¹, presenting substantial enhancement over the capacity of 75.7 mA·h·g⁻¹ for B-MnO/C. Ex-situ experiments indicate that MnO during the zinc ion storage is electrochemically oxidized into MnO₂ species, and actually facilitates the intercalation/deintercalation of H⁺ and Zn²⁺. These findings underscore the potential of the MnO NN/LC composite as a promising cathode material for AZIBs.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"95 ","pages":"Pages 50-59"},"PeriodicalIF":3.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148573661","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}