AIChE Journal最新文献

Direct insight into particle swarm dynamics and its effects in dense solid–liquid suspensions using inline image method 直接洞察粒子群动力学及其影响在密集的固体-液体悬浮液使用内联图像方法

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2025-10-15 DOI: 10.1002/aic.70109

Haoliang Wang, Runci Song, Jie Chen, Li Yang, Jingcai Cheng, Xiangyang Li, Chao Yang

{"title":"Direct insight into particle swarm dynamics and its effects in dense solid–liquid suspensions using inline image method","authors":"Haoliang Wang, Runci Song, Jie Chen, Li Yang, Jingcai Cheng, Xiangyang Li, Chao Yang","doi":"10.1002/aic.70109","DOIUrl":"https://doi.org/10.1002/aic.70109","url":null,"abstract":"Concentrated suspensions of very high phase fractions (>10%) significantly complicate hydrodynamic characteristics in multiphase reactors. The inline image method proposed recently provides the possibility to peer into dense particle swarm dynamics, previously considered an impossible mission. In this work, the method was further developed to determine the particle-resolved flow field and comprehensive datasets of particles within a swarm. Transient swarm microstructure demonstrated two aggregation states, that is, doublets and multiplets, accompanied by frequent collisions and friction. Statistical analysis indicated the damping effect on slip velocity and net force induced by the particle swarm became significant as solid holdup reached 13.2%, which markedly enhanced particle suspension. Through correlation analysis of dynamic datasets and relevant mechanisms, the viscous effect and hindrance effect exerted by the particle swarm were quantitatively elucidated for the first time. Accordingly, a correlation was proposed to predict the swarm effect on axial slip velocity, and good agreement was demonstrated across wide concentration ranges.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"26 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145288963","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

Unlocking high stability and selectivity in reverse water–gas shift over a synergistic MoCO catalyst 在协同MoCO催化剂上解锁高稳定性和选择性的逆向水气转换

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2025-10-14 DOI: 10.1002/aic.70111

Xiaolong Li, Manni Sun, Zhiyan Yang, Xiru Wang, Yongning Ma, Junli Zhu, Zhuoya Zhao, Yuhao Yang

{"title":"Unlocking high stability and selectivity in reverse water–gas shift over a synergistic MoCO catalyst","authors":"Xiaolong Li, Manni Sun, Zhiyan Yang, Xiru Wang, Yongning Ma, Junli Zhu, Zhuoya Zhao, Yuhao Yang","doi":"10.1002/aic.70111","DOIUrl":"https://doi.org/10.1002/aic.70111","url":null,"abstract":"The reverse water‐gas shift (RWGS) reaction is vital for CO2 utilization and carbon cycling, yet catalyst stability and CO selectivity remain major challenges due to its endothermic nature and competing methanation. Here, a synergistic α‐Mo2C:MoO2 (MoCO) catalyst with carbide–oxide interactions was in situ constructed via a one‐step temperature‐programmed calcination, achieving high dispersion and synergy. MoCO‐3.5 (Mo/C = 1:3.5) reached near‐equilibrium CO2 conversions (50.56% at 500°C, 74.71% at 800°C) and >99.6% CO selectivity under H2/CO2 = 3:1 at industrial space velocity (8400 mL·gcat−1·h−1), maintaining stability for 120 h without coking. Mechanistic studies revealed a hydrogen‐assisted formate pathway, and weak CO adsorption enabled rapid desorption, effectively suppressing methanation. This synergy‐driven structural regulation strategy offers a promising strategy for designing highly stable and CO‐selective non‐noble metal RWGS catalysts.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"21 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145282692","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

Co‐O‐Zn interface engineering for boosting CO2 hydrogenation to light olefins Co - O - Zn界面工程促进CO2加氢生成轻质烯烃

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2025-10-14 DOI: 10.1002/aic.70106

Qingling Xu, Bin Shao, Zheyi Sun, Zihao Gao, Zhicheng Xie, Jun Hu

{"title":"Co‐O‐Zn interface engineering for boosting CO2 hydrogenation to light olefins","authors":"Qingling Xu, Bin Shao, Zheyi Sun, Zihao Gao, Zhicheng Xie, Jun Hu","doi":"10.1002/aic.70106","DOIUrl":"https://doi.org/10.1002/aic.70106","url":null,"abstract":"The carbon dioxide (CO2) hydrogenation to light olefins (CO2‐to‐C2‐C4=) represents a promising approach for its high‐value utilization but faces the crucial challenges of low CO2 conversion efficiency and olefin selectivity. Herein, we develop an oxide–oxide interface engineering strategy to boost CO2‐to‐C2‐C4=. A high CO2 conversion efficiency of 27.4% and C2‐C4= yield of 15.3% with excellent stability for 200 h are achieved on optimized CoOx/ZnGa2O4–2.5/SAPO‐34 through the oxide–zeolite (OX‐ZEO) bifunctional tandem route. The well‐controlled Co‐O‐Zn oxide–oxide interface in CoOx/ZnGa2O4 facilitates the bidentate adsorption of CO2, enabling the exposed C atom to be attracted by spilled‐over H* from the heterolytic cleavage on adjacent Zn‐O. Accordingly, the preferentially produced HCOO* leads to effective CO2 conversion and selective generation of methanol precursor. Therefore, this oxide–oxide interfacial engineering offers a promising strategy for achieving highly efficient CO2‐to‐C2‐C4= through OX‐ZEO route.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"64 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145282691","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

Investigation on global and local RTD, mixing, and heat transfer of a high‐throughput passive chaotic microreactor 高通量无源混沌微反应器的整体和局部RTD、混合和传热研究

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2025-10-09 DOI: 10.1002/aic.70085

Shi‐Xiao Wei, Ying Liu, Ting‐Liang Xie, Shuang‐Feng Yin

{"title":"Investigation on global and local RTD, mixing, and heat transfer of a high‐throughput passive chaotic microreactor","authors":"Shi‐Xiao Wei, Ying Liu, Ting‐Liang Xie, Shuang‐Feng Yin","doi":"10.1002/aic.70085","DOIUrl":"https://doi.org/10.1002/aic.70085","url":null,"abstract":"Understanding residence time distribution (RTD) and mass/heat performance is crucial for microreactor design and optimization. This study investigates global and local RTD in a chaotic microreactor using computational fluid dynamics (CFD) simulations and experiments, and a new RTD model is established. Global RTD analysis indicates that higher flow rates reduce channeling and stagnant flows, decreasing RTD variance by 80.7% within the range of 5–20 mL/min. Local RTD analysis reveals continuous stirred tank reactor (CSTR)‐like mixing characteristics within individual stages, enabling rapid homogenization. Enhanced chaotic mixing reduces micromixing time by four orders of magnitude at high flow rates, and significantly improves heat transfer, with an increase in Nusselt number of 220.7%. Optimized RTD and intensified chaotic mixing collectively establish a spatiotemporally uniform reaction environment, enabling high‐throughput synthesis of Mn0.75Ni0.25CO3 microparticles with a uniform size distribution (σ = 0.36 μm), demonstrating scalable synthesis potential.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"7 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145246841","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

100% CO2 selectivity Fe2O3/Fe3O4 redox pair of Ba‐hexaferrite for CO2 capture via relay oxygen donation 100% CO2选择性Fe2O3/Fe3O4氧化还原对Ba‐六铁体通过接力供氧捕获CO2

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2025-10-07 DOI: 10.1002/aic.70100

Yanyan Zhu, Yumei Zhou, Lihua Chen, Haitao Zhu, Haonan Chen, Ruilin Liu, Jiahui He, Qian Yang, Jun Hu, Chuande Huang, Xiaodong Wang

{"title":"100% CO2 selectivity Fe2O3/Fe3O4 redox pair of Ba‐hexaferrite for CO2 capture via relay oxygen donation","authors":"Yanyan Zhu, Yumei Zhou, Lihua Chen, Haitao Zhu, Haonan Chen, Ruilin Liu, Jiahui He, Qian Yang, Jun Hu, Chuande Huang, Xiaodong Wang","doi":"10.1002/aic.70100","DOIUrl":"https://doi.org/10.1002/aic.70100","url":null,"abstract":"Engineering an iron‐based oxygen carrier with high oxygen transport capacity (Ot) surpassing Fe2O3/Fe3O4 redox pair without decreasing CO2 selectivity and recyclability remains a substantial obstacle for CO2 capture via chemical looping combustion (CLC) technology. Herein, we propose a novel strategy by confining iron‐cations into the matrix of BaFe12O19 hexaferrite, which exhibited both superior Ot of 3.0 mmol/g with 100% CO2 selectivity (exceeding the maximal limit of 2.08 mmol/g for pure Fe2O3 → Fe3O4), and a unique increased trend in Ot with good recyclability during 50 redox cycles, different from most reported Fe‐based OCs. The high Ot and recyclability were closely related to the “relay oxygen supply” involving the preferential diffusion route of the mirror plane in Ba‐hexaferrite and in situ formation of nanosized Ba‐modified Fe3O4/FeO. The cyclic redox treatment induced more Ba2+ into Fe oxides and the surface enrichment of Ba2+, thus ensuring high recyclability with increased Ot during the later redox cycles.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"197 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145235272","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

Emulsion interfacial nanoarchitectonics with a biomimetic channel‐architected polymer for enhanced biocatalysis 乳液界面纳米结构与仿生通道结构聚合物增强生物催化

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2025-10-06 DOI: 10.1002/aic.70092

Zhiyong Sun, Mengyao Wang, Nanxiang Shen, Lanxin Ren, Xiaofei Chen, Jianming Yu

{"title":"Emulsion interfacial nanoarchitectonics with a biomimetic channel‐architected polymer for enhanced biocatalysis","authors":"Zhiyong Sun, Mengyao Wang, Nanxiang Shen, Lanxin Ren, Xiaofei Chen, Jianming Yu","doi":"10.1002/aic.70092","DOIUrl":"https://doi.org/10.1002/aic.70092","url":null,"abstract":"Overcoming mass transfer limitations at the water–organic interface is critical in biphasic biocatalysis. Inspired by the natural cellular processes such as endocytosis and transport proteins, we developed an amphiphilic polymer with jellyfish‐like nanoarchitectonics to engineer the emulsion interface. This polymer forms dynamic micelles to compartmentalize hydrophobic compounds and creates channel‐like structures that facilitate substrate transfer across the phase boundary. Compared to the single‐chain polymer, the jellyfish‐inspired emulsifier significantly enhanced the biphasic biotransformation across diverse reactions. In the un‐emulsified systems, the channel‐structured polymer boosted the yield of the benzaldehyde lyase‐catalyzed benzoin condensation reaction by over 50% relative to controls. In the emulsified systems, a 77% higher efficiency was achieved in the multi‐enzyme cascade reaction involving aromatic and aliphatic substrates, underscoring its versatility. This work bridges the gap between polymer architecture design and biocatalytic performance, offering a biomimetic strategy to engineer emulsion interfaces for revolutionizing mass transfer in biphasic systems.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"46 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145228904","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

2D population balance modeling and ML‐based multi‐objective optimization for the crystallization process of resveratrol 白藜芦醇结晶过程的二维种群平衡建模和基于ML的多目标优化

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2025-10-04 DOI: 10.1002/aic.70094

Álmos Orosz, Monika Neal, Rekha Rao, Christine Roberts, Botond Szilágyi, Zoltán K. Nagy

引用次数: 0

Lanthanide contraction effect of PdPr nanosheets boosting PET electrocatalytic value‐added conversion PdPr纳米片的镧系收缩效应促进PET电催化增值转化

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2025-09-29 DOI: 10.1002/aic.70096

Xiaoying Zhang, Ranran Wei, Zhihan Zhang, Yaxuan Li, Zekai Shen, Ruichen Geng, Yinglong Wang, Junmei Zhang, Shuli Yin

{"title":"Lanthanide contraction effect of PdPr nanosheets boosting PET electrocatalytic value‐added conversion","authors":"Xiaoying Zhang, Ranran Wei, Zhihan Zhang, Yaxuan Li, Zekai Shen, Ruichen Geng, Yinglong Wang, Junmei Zhang, Shuli Yin","doi":"10.1002/aic.70096","DOIUrl":"https://doi.org/10.1002/aic.70096","url":null,"abstract":"With the worsening of plastic pollution and increasing attention being paid to sustainable development, the upgrading and recycling of waste plastics have become important tasks. In this study, organic ligand‐modified PdPr nanosheets (PdPr O‐NSs) with the lanthanide contraction effect are constructed and used as high‐performance electrocatalysts for the value‐added transformation of polyethylene terephthalate. PdPr O‐NSs only require a potential of 0.75 V to supply current densities of 200 mA cm−2. The Faraday efficiency and selectivity for the primary product glycolic acid reached 97.5% and 94.6% at 0.675 V, respectively. Density functional theory calculations confirm that the existence of Pr and n‐octanoic acid adjusts the electronic structure and coordination environment, improving the electron transfer efficiency and catalytic performance. This work not only provides a new strategy for constructing novel and efficient lanthanide‐doped nanomaterial electrocatalysts but also paves the way for recycling waste plastics.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"92 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145188398","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

Surface-engineered perovskite oxides enabling dual activation of lattice and adsorbed oxygen for CO oxidation 表面工程钙钛矿氧化物，使晶格和吸附氧的CO氧化双重活化

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2025-09-29 DOI: 10.1002/aic.70099

Nie Guangze, Du Xiangqian, Cheng Qihang, Deng Guoshu, Zhou Zhihao, Pan Min, Yu Hongchao, Zhang Tongxing, He Xuehui, Yu Jiawei, Sun Zhenkun, Duan Lunbo

{"title":"Surface-engineered perovskite oxides enabling dual activation of lattice and adsorbed oxygen for CO oxidation","authors":"Nie Guangze, Du Xiangqian, Cheng Qihang, Deng Guoshu, Zhou Zhihao, Pan Min, Yu Hongchao, Zhang Tongxing, He Xuehui, Yu Jiawei, Sun Zhenkun, Duan Lunbo","doi":"10.1002/aic.70099","DOIUrl":"https://doi.org/10.1002/aic.70099","url":null,"abstract":"Catalytic oxidation using perovskite oxides is a promising technology for mitigating environmental and health risks associated with CO emissions. A fundamental constraint for perovskite oxides, however, lies in the limited low-temperature reactivity of oxygen species. While the dual activation of lattice oxygen (Olatt) and adsorbed oxygen (Oads) is recognized as an effective strategy, achieving it in perovskite oxides remains a significant and underexplored challenge. This study addresses this challenge through a novel surface engineering strategy employing dilute TiCl4 solution treatment. The treatment process on La0.6Sr0.4CoO3 (LSCO) simultaneously achieves two distinct functions: (i) the removal of surface A-site segregation to expose Co-site termination, thereby facilitating Oads activation; (ii) the incorporation of Ti dopant, which enhances the CoO covalency to boost Olatt reactivity. This concerted dual activation mechanism enables the LSCO-Ti catalyst to operate via both Mars–van Krevelen (Olatt-mediated) and Langmuir–Hinshelwood (Oads-mediated) pathways, leading to its exceptional activity of 90% CO conversion at a remarkably low temperature of 92°C. Furthermore, the Ti dopant also optimizes O2 adsorption and suppresses carbonate accumulation, ensuring stable performance for over 50 h at 150°C. Our work provides a novel mechanistic framework for designing high-performance perovskite catalysts via synergistic surface modification.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"5 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145183269","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

Bubble shape classification in a bubble column based on multi-input ConvNeXt model 基于多输入ConvNeXt模型的泡柱泡形分类

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2025-09-29 DOI: 10.1002/aic.70097

Qizhou Kang, Qin Li, Zepeng Zhao, Wenxiang Tang, Xiangyang Li, Yanqiang Huang

{"title":"Bubble shape classification in a bubble column based on multi-input ConvNeXt model","authors":"Qizhou Kang, Qin Li, Zepeng Zhao, Wenxiang Tang, Xiangyang Li, Yanqiang Huang","doi":"10.1002/aic.70097","DOIUrl":"https://doi.org/10.1002/aic.70097","url":null,"abstract":"A comprehensive understanding of the continuous variation and deformation of rising bubbles is essential for precise reactor scale-up and process optimization. This work combines telecentric vision probe and bubble boundary R-CNN with a newly developed multi-input ConvNeXt to pioneer bubble shape classification under realistic flow conditions. The classification results demonstrate that ellipsoidal bubbles constitute the predominant shape (49.5%), while oblate ellipsoidal bubbles represent the smallest proportions (2.7%). Statistical analysis of E and dm across all classified bubbles reveals significant distinctions: spherical and oblate ellipsoidal bubbles exhibit pronounced differences in E compared to other classes, whereas the remaining shapes show relative consistency. dm varies substantially across classes, progressively increasing in the order: spherical, ellipsoidal, spherical cap, ellipsoidal cap, oblate ellipsoidal, and wobbling ellipsoidal. While our model achieves bubble classification, unresolved issues span image quality constraints, 3D shape inference from 2D data, turbulent flow coupling, and high-velocity applicability—necessitating integrated imaging-algorithm advances.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"18 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145183268","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