Chinese Journal of Chemical Engineering最新文献

{"title":"Synthesis of a porous organic polymer via click reaction for efficient CH4/C2H6/C3H8 separation","authors":"Xun Wang,&nbsp;Tianjian Lun,&nbsp;Changbin Xu,&nbsp;Haolong Zheng,&nbsp;Daofei Lv,&nbsp;Xin Chen,&nbsp;Jian Yan,&nbsp;Junjie Peng,&nbsp;Feng Xu,&nbsp;Zewei Liu","doi":"10.1016/j.cjche.2024.11.013","DOIUrl":"10.1016/j.cjche.2024.11.013","url":null,"abstract":"<div><div>Adsorptive separation holds important prospect for the challenging recovery of C₂H₆ and C₃H₈ from natural gas and the separation efficiency is primarily determined by a high-performance adsorbent. In this work, we reported the synthesis of a novel porous organic polymer, FOSU-POP-1 for the separation of CH₄/C₂H₆/C₃H₈. The FOSU-POP-1 was synthesized from tetrakis(4-azidophenyl)methane and 1,3,5-triethynylbenzene <em>via</em> click reaction with a Brunauer–Emmett–Teller (BET) surface area of 1038 m²·g⁻¹. Exhibiting stronger affinity towards C₃H₈ and C₂H₆ than CH₄, 2.85 mmol·g⁻¹ for C₃H₈ and 2.14 mmol·g⁻¹ for C₂H₆ were achieved on the FOSU-POP-1 at 0.1 MPa, 298 K, with an ideal adsorbed solution theory selectivity of 227 for C₃H₈/CH₄. The breakthrough experiment confirmed the good dynamic separation performance and recyclability of FOSU-POP-1 for CH₄/C₂H₆/C₃H₈ ternary mixture. The density functional theory calculation further revealed that the N atom in triazole ring interacted strongly with the C₃H₈ and C₂H₆. This work highlighted the promising capability of FOSU-POP-1 for efficiently separating CH₄/C₂H₆/C₃H₈ mixture.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"79 ","pages":"Pages 252-259"},"PeriodicalIF":3.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580597","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":"Noncovalently functionalized organic graphene aerogel composite for high-performance proton storage","authors":"Jing He ,&nbsp;Maoding Cheng ,&nbsp;Qinglong Jiang ,&nbsp;Subramania Angaiah ,&nbsp;Minjie Shi ,&nbsp;Chao Yan","doi":"10.1016/j.cjche.2024.11.018","DOIUrl":"10.1016/j.cjche.2024.11.018","url":null,"abstract":"<div><div>Although organic compounds are considered to be promising electrode materials with their remarkable characteristics such as diverse structures, design controllability, and environmental friendliness, their low charge-transfer capability and limited cycling durability hinder their application in aqueous proton batteries. Herein, we prepared a noncovalent phenazine-based graphene aerogel (H/G) composite for aqueous proton storage, which is realized by redox-active Hexaazatrinaphthalene (HATN) organic compound combined with conductive reduced graphene oxide (rGO). The integration of rGO into HATN not only effectively optimizes the electronic structure of the H/G composite to enhance its electrochemical activity, but also the favorable noncovalent π–π interaction existed between HATN and rGO provides a stable structure for fast electron transportation. The obvious electron transfer in the aerogel composite promotes fast and reversible redox reactions occurred with the imino-active HATN in the composite electrode for proton uptake/removal in an aqueous acidic electrolyte, which are demonstrated by in-situ Fourier transform infrared (FTIR) investigation, theoretical calculations and experimental measurements. Therefore, it can deliver a fast, stable and efficient aqueous proton storage behavior with a large specific capacity of 274 mAh g⁻¹ and considerable calendar life with ∼100% capacity retention after 3000 cycles, surpassing previously reported proton-based organic electrodes in aqueous acidic electrolytes. Furthermore, an outstanding soft-package aqueous proton (APB) has been fabricated with considerable long-term cycling stability.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"79 ","pages":"Pages 260-268"},"PeriodicalIF":3.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601161","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":"Current advances in distillation processes for fermentative acetone-butanol-ethanol purification","authors":"Xuedan Hou ,&nbsp;Pengfei Zhao ,&nbsp;Xiaohui Lin ,&nbsp;Yunxing Gao ,&nbsp;Huidong Chen ,&nbsp;Di Cai ,&nbsp;Peiyong Qin","doi":"10.1016/j.cjche.2024.08.014","DOIUrl":"10.1016/j.cjche.2024.08.014","url":null,"abstract":"<div><div>Acetone-butanol-ethanol (ABE) fermentation is a primary strategy for producing bio-based <em>n-</em>butanol from abundant renewable biomass. In the typical ABE production chain, distillation is an essential unit for high purity A-B-E productions, but has long been criticized by the energy-inefficient processes due to the extremely low solvents concentration received in the upstream fermentation system. Over the past decades, efforts have been dedicated to developing eco-efficient ABE distillation processes aimed at reducing both energy costs and capital investments. In this review, a comprehensive overview on ABE distillation systems is provided from physico-chemical properties in feed and thermodynamics to the process constructions and applications. The recent trends in distillation sequence construction that fitting with the rapid developed upstream <em>in situ</em> product recovery (ISPR) systems are emphasized. Furthermore, towards developing a more efficient ABE distillation system, the review takes a broad overview of the intensification strategies for ABE distillation. Along with systematic introduction of the key examples, the future directions for ABE distillation techniques development are also discussed towards a sustainable and low-carbon emission biorefineries.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"79 ","pages":"Pages 91-108"},"PeriodicalIF":3.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580108","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":"Hydrogenation kinetic of alkenes and aromatics over NiMo hydrotreatment catalysts","authors":"Wenbo Li ,&nbsp;Xinyao Fu ,&nbsp;Weiming Zhai ,&nbsp;Xingyang Huang ,&nbsp;Wenbin Chen ,&nbsp;Chen Zhang ,&nbsp;Wei Zhang ,&nbsp;Cuiqing Li ,&nbsp;Yong Luo ,&nbsp;Feng Liu ,&nbsp;Mingfeng Li","doi":"10.1016/j.cjche.2024.10.036","DOIUrl":"10.1016/j.cjche.2024.10.036","url":null,"abstract":"<div><div>Hydrotreatment is a critical process in the petrochemical industry to produce gasoline or diesel. Proper kinetic models and accurate kinetic parameters of hydrotreatment reactions are important for the industrial reactor design and scale-up research. In this work, hydrogenation kinetics of alkene and aromatic model compounds were studied thoroughly to provide deep understanding on alkene and aromatic hydrogenation behaviors in gasoline and diesel hydrotreating. Commercial NiMo hydrotreatment catalysts were used to obtain experimental data of hydrogenation reactions. Cyclohexene, 1-octene, naphthalene and phenanthrene were used as model compounds of alkenes and aromatics. Langmuir-Hinshelwood-Hougen-Watson (LHHW) kinetic models for hydrotreatment reactions were established. In addition, phase equilibrium calculations were combined with kinetic study, and it is discovered that using calculated liquid phase compositions as kinetic model input could greatly enhance the accuracy of kinetic models and the quality of kinetic parameters, leading to higher accordance with experimental results. Using kinetic models and phase equilibrium analysis, the effect of reaction conditions (temperature, pressure, and H₂/oil ratio) on reaction rates were also predicted and clarified. The importance of phase equilibrium in kinetic analysis for hydrotreating reactions was demonstrated in this study, which provides an effective approach for future hydrotreatment reactor design and catalyst optimization.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"79 ","pages":"Pages 11-22"},"PeriodicalIF":3.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143528990","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":"Synergistic effect between nitrogen-doped sites and metal chloride for carbon supported extra-low mercury catalysts in acetylene hydrochlorination","authors":"Yiyang Qiu ,&nbsp;Chong Liu ,&nbsp;Xueting Meng ,&nbsp;Yuesen Liu ,&nbsp;Jiangtao Fan ,&nbsp;Guojun Lan ,&nbsp;Ying Li","doi":"10.1016/j.cjche.2024.11.007","DOIUrl":"10.1016/j.cjche.2024.11.007","url":null,"abstract":"<div><div>Carbon-supported mercury catalysts are extensively employed in calcium carbide-based polyvinyl chloride (PVC) industries, but the usage of mercury-based catalysts can pose an environmental threat due to the release of mercury into the surrounding area during the operation period. In this study, a highly active and stable mercury-based catalyst was developed, utilizing the nitrogen atom of the support as the anchor site to enhance the interaction between active sites (HgCl₂) and the carbon support (N-AC). Thermal loss rate testing and thermogravimetric analysis results demonstrate that, compared to commercial activated carbon, N-doped carbon can effectively increase the heat stability of HgCl₂. The obtained mercury-based catalysts (HgCl₂/N-AC) exhibit significant catalytic performance, achieving 2.5 times the C₂H₂ conversion of conventional HgCl₂/AC catalysts. Experimental analysis combined with theoretical calculations reveals that, contrary to the Eley-Rideal (ER) mechanism of HgCl₂/AC, the HgCl₂/N-AC catalyst follows the Langmuir-Hinshelwood (LH) adsorption mechanism. The nitrogen sites and HgCl₂ on the catalyst enhance the adsorption capabilities of the HCl and C₂H₂, thereby improving the catalytic performance. Based on the modification of the active center by these solid ligands, the loading amount of HgCl₂ on the catalyst can be further reduced from the current 6.5% to 3%. Considering the absence of successful industrial applications for mercury-free catalysts, and based on the current annual consumption of commercial mercury chloride catalysts in the PVC industry, the widespread adoption of this technology could annually reduce the usage of chlorine mercury by 500 tons, making a notable contribution to mercury compliance, reduction, and emissions control in China. It also serves as a bridge between mercury-free and low-mercury catalysts. Moreover, this solid ligand technology can assist in the application research of mercury-free catalysts.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"79 ","pages":"Pages 145-154"},"PeriodicalIF":3.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580111","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":"Zn2+ significantly enhances the performance of petal-like Co-naphthalenetetracarboxylic acid MOF as an anode material for lithium-ion batteries","authors":"Qin Cheng,&nbsp;Pengfei Ma,&nbsp;Ruize Yin,&nbsp;Chaodi Wang,&nbsp;Weiwei Xiong,&nbsp;Zhongyao Duan,&nbsp;Fu Yang,&nbsp;Junhao Zhang","doi":"10.1016/j.cjche.2024.10.034","DOIUrl":"10.1016/j.cjche.2024.10.034","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs), with their ultrahigh specific surface area, uniformly distributed pores, and tunable structures, are promising candidates for next-generation active electrode materials in lithium-ion batteries (LIBs). However, their application is hindered by poor cycling stability due to structural collapse during charge-discharge cycles. To address this issue, we developed an alloy and multi-solvent thermal method strategy to synthesize Co/Zn bimetallic MOFs based on Naphthalenetetracarboxylic acid (NTCA). The resulting petal-like Co/Zn-NTCA MOF demonstrates outstanding electrochemical performance. The incorporation of zinc ions not only significantly enhances cycling stability but also markedly increases the specific capacity of the anode material. At a current density of 200 mA·g⁻¹, the Co/Zn (2:1)-NTCA MOF demonstrated an impressive reversible capacity of 956 mA·h·g⁻¹ after 150 cycles. Even after 500 cycles, the specific capacity of the electrode remained high, with a value of 438 mA·h·g⁻¹ at a current density of 1000 A·g⁻¹.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"79 ","pages":"Pages 164-171"},"PeriodicalIF":3.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580113","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":"Application of wavelet neural network with chaos theory for enhanced forecasting of pressure drop signals in vapor−liquid−solid fluidized bed evaporator","authors":"Xiaoping Xu ,&nbsp;Ting Zhang ,&nbsp;Zhimin Mu ,&nbsp;Yongli Ma ,&nbsp;Mingyan Liu","doi":"10.1016/j.cjche.2024.10.010","DOIUrl":"10.1016/j.cjche.2024.10.010","url":null,"abstract":"<div><div>The dynamics of vapor−liquid−solid (V−L−S) flow boiling in fluidized bed evaporators exhibit inherent complexity and chaotic behavior, hindering accurate prediction of pressure drop signals. To address this challenge, this study proposes an innovative hybrid approach that integrates wavelet neural network (WNN) with chaos analysis. By leveraging the Cross-Correlation (C−C) method, the minimum embedding dimension for phase space reconstruction is systematically calculated and then adopted as the input node configuration for the WNN. Simulation results demonstrate the remarkable effectiveness of this integrated method in predicting pressure drop signals, advancing our understanding of the intricate dynamic phenomena occurring with V−L−S fluidized bed evaporators. Moreover, this study offers a novel perspective on applying advanced data-driven techniques to handle the complexities of multi-phase flow systems and highlights the potential for improved operational prediction and control in industrial settings.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"78 ","pages":"Pages 67-81"},"PeriodicalIF":3.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133777","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":"Fluorosurfactants and their application in droplet microreactors: An overview","authors":"Wei Cheng,&nbsp;Huilin Wen,&nbsp;Xiaoqiang Chen,&nbsp;Shaobin Zhang,&nbsp;Ziyi Yu","doi":"10.1016/j.cjche.2024.11.001","DOIUrl":"10.1016/j.cjche.2024.11.001","url":null,"abstract":"<div><div>Fluorosurfactants play a crucial role in ensuring the stability and uniformity of droplet microreactors, which significantly broaden their applications in chemical and biological research. This review covers structure diversity and functional versatility of fluorosurfactants. Fluorosurfactants can be divided into two basic types according to their structure, linear and dendritic types, which both provides individual advantages. Linear fluorosurfactants are easily synthesized and commercially available, whereas dendritic fluorosurfactants have a branched structure that greatly reduces molecular cross-talk between droplets. Based on the application point of view, fluorosurfactants can be further classified into two categories: reactive and responsive fluorosurfactants. The hydrophilic head of reactive fluorosurfactants contains a reactive functional group, making them very useful in other applications, such as microcapsule preparation or protein crystallization. In contrast, responsive fluorosurfactants would change their properties with respect to external stimuli, such as temperature or light, making them perfect candidates for the on-demand control of droplet behavior. Development of these new classes of fluorosurfactants has expanded the capabilities and applications of droplet microreactors that enables interdisciplinary challenges to be solved.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"78 ","pages":"Pages 314-326"},"PeriodicalIF":3.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143134312","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":"Kinetics of hydrogen sulfide removal from coke oven gas over faujasite zeolite: Experimental and modeling studies","authors":"Feng Gao ,&nbsp;Sixiao Zhu ,&nbsp;Liping Chang ,&nbsp;Weiren Bao ,&nbsp;Jinghong Ma ,&nbsp;Junjie Liao","doi":"10.1016/j.cjche.2024.10.022","DOIUrl":"10.1016/j.cjche.2024.10.022","url":null,"abstract":"<div><div>The removal of H₂S from coke oven gas (COG) is an important issue for the further utilization of COG. Zeolites could be used for industrial desulfurization owing to their high thermal stability and regenerability. However, further analysis on the kinetics of deep desulfurization using zeolites is necessary to provide relevant information for industrial design. In this study, the desulfurization breakthrough curves of faujasite (FAU) zeolite in COG were measured using a fixed bed reactor. The adsorption isotherm was investigated using the Langmuir, Freundlich, Temkin, Dubinin-Radushkevich models. The adsorption saturated capacity of H₂S was inversely related to the temperature. The results show that the Langmuir model best fits the adsorption isotherm with a lower value of root-mean-square-error (RMSE) and Chi-Square (<em>χ</em>²), and the calculated activation energy is 14.62 kJ·mol⁻¹. The adsorption kinetics were investigated using pseudo-first-order (PFO), pseudo-second-order (PSO), Bangham and Weber-Morris models. The Bangham model fitted the kinetic data well, indicating that pore diffusion is an influential factor in the adsorption process. The Weber-Morris model suggests that the adsorption rate was not solely determined by the pore diffusion, but was also influenced by the active site on the FAU zeolite. The adsorption breakthrough curves under different gas flow rates were fitted using the bed depth service time (BDST) model, and it provides an accurate prediction of the breakthrough time with a small relative error. The results of thermodynamic analysis demonstrated the feasibility and spontaneity (Δ<em>G</em>&lt;0) and exothermic (Δ<em>H</em>&lt;0) nature of the adsorption process of the FAU zeolite for H₂S under COG.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"78 ","pages":"Pages 232-244"},"PeriodicalIF":3.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133673","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":"Distributed asynchronous double accelerated optimization for ethylene plant considering delays","authors":"Ting Wang ,&nbsp;Zhongmei Li ,&nbsp;Wenli Du","doi":"10.1016/j.cjche.2024.11.003","DOIUrl":"10.1016/j.cjche.2024.11.003","url":null,"abstract":"<div><div>Considering the complexity of plant-wide optimization for large-scale industries, a distributed optimization framework to solve the profit optimization problem in ethylene whole process is proposed. To tackle the delays arising from the residence time for materials passing through production units during the process with guaranteed constraint satisfaction, an asynchronous distributed parameter projection algorithm with gradient tracking method is introduced. Besides, the heavy ball momentum and Nesterov momentum are incorporated into the proposed algorithm in order to achieve double acceleration properties. The experimental results show that the proposed asynchronous algorithm can achieve a faster convergence compared with the synchronous algorithm.</div></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"78 ","pages":"Pages 245-250"},"PeriodicalIF":3.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143134295","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}