AIChE Journal最新文献_第2页

Lumped modeling of bubbling fluidized beds for high‐temperature processes 高温过程鼓泡流化床的集总建模

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2026-10-17 DOI: 10.1002/aic.70700

Ravi Ramesh, Elyas Moghaddam, Wiebren de Jong, Johan T. Padding

{"title":"Lumped modeling of bubbling fluidized beds for high‐temperature processes","authors":"Ravi Ramesh, Elyas Moghaddam, Wiebren de Jong, Johan T. Padding","doi":"10.1002/aic.70700","DOIUrl":"https://doi.org/10.1002/aic.70700","url":null,"abstract":"Bubbling fluidized beds (BFBs) have been a source of study for multiple decades. Among other applications, they can be used as scalable reactors for the conversion of biomass and waste resources to fuels. Several experimental and computational studies have been devoted to correlating the interplay of hydrodynamics and heat and mass transfer in fluidized beds. Despite the existence of several direct correlations for full‐scale reactors, these are typically only applicable to cylindrical reactor geometries, fluidized through a homogeneous gas distributor plate at the bottom. Detailed Computational Fluid Dynamics models could, in theory, handle more complex geometries, but are still computationally too expensive for industrial‐scale equipment. Therefore, there is a need for relatively fast models that enable researchers to estimate performance parameters with reasonable accuracy for non‐standard fluidized‐bed geometries. An important role is played by so‐called lumped models, in which the various interactions between the transport phenomena are explicitly described. Although lumping is not a new concept in the literature—various authors have applied lumping for hydrodynamics and heat transfer in the past—it is not immediately clear how different kinds of lumping could be used for more complex designs for high‐temperature processes. Here, we discuss the various lumped models available in the literature for fluidized‐bed reactors and critically analyze the developments necessary to apply them to high‐temperature processes.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"11 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149199012","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

Flow‐regime transition and flow‐structure‐based scale‐up of Siemens reduction furnaces 西门子还原炉的流态转换和流结构放大

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2026-10-16 DOI: 10.1002/aic.70697

Fanzheng Meng, Wei Si, Yuan Zong, Ling Zhao, Zhong Xin, Gance Dai

引用次数: 0

Regulating C–O bond cleavage in electrocatalytic furfural hydrodeoxygenation over Lewis acid‐promoted Cu catalysts 路易斯酸促进铜催化剂上电催化糠醛加氢脱氧过程中C-O键断裂的调节

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2026-10-16 DOI: 10.1002/aic.70710

Yanhui Tang, Yang Xiang, Yanminzi Zhang, Xun Huang, Zidong Wei

引用次数: 0

Membrane electrolysis‐assisted cooling crystallization with in situ microbubbles for efficient nucleation regulation 膜电解辅助冷却结晶与原位微泡有效成核调节

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2026-10-16 DOI: 10.1002/aic.70703

Shaofu Du, Shaoqin Yin, Jibo Diao, Bing Sun, Lingfeng Wang, Yuchao Niu, Wu Xiao, Xuehua Ruan, Hongxun Yang, Fang Ling, Ruming Feng, Gaohong He, Xiaobin Jiang

{"title":"Membrane electrolysis‐assisted cooling crystallization with in situ microbubbles for efficient nucleation regulation","authors":"Shaofu Du, Shaoqin Yin, Jibo Diao, Bing Sun, Lingfeng Wang, Yuchao Niu, Wu Xiao, Xuehua Ruan, Hongxun Yang, Fang Ling, Ruming Feng, Gaohong He, Xiaobin Jiang","doi":"10.1002/aic.70703","DOIUrl":"https://doi.org/10.1002/aic.70703","url":null,"abstract":"Efficient nucleation regulation is crucial to the cooling crystallization control, which determines the final crystal characteristics. Herein, a membrane electrolysis‐assisted cooling crystallization (MEACC) by bubble‐mediated nucleation strategy is proposed. The fabricated conductive membrane can rapidly generate and release abundant in situ microbubbles, which subsequently trigger nearby fluid convection to intensify mass/heat transfer within the boundary layer, and achieve efficient induced nucleation and nucleus transport at the supercooled membrane surface. MEACC exhibits the shortest induction time, which is reduced by 56% for the single membrane‐assisted method, and by 64% for direct cooling crystallization (DCC), and the highest average induced nucleation rate. The obtained crystals from MEACC present the largest average size, which increases by 30% for the single membrane‐assisted method, and by 132% for DCC, and more regular morphology. MEACC simultaneously achieves efficient induced nucleation under mild supersaturation and explosive nucleation mitigation at high cooling rates, exhibiting great potential for ideal cooling crystallization control.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"11 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149198900","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

Constructing robust NGO-grafted polyamide membranes for efficient Mg2+/Li+ separation from salt-lake brines 构建强大的NGO -接枝聚酰胺膜，用于从盐湖盐水中高效分离Mg 2+ / Li +

IF 4.4 3区工程技术

AIChE Journal Pub Date : 2026-10-15 Epub Date: 2026-07-26 DOI: 10.1002/aic.70561

Ma Xinyu, Yang Fengrui, Song Chenyang, Wei Jun, Jia Shuwei, Wang Zhi

{"title":"Constructing robust NGO-grafted polyamide membranes for efficient Mg2+/Li+ separation from salt-lake brines","authors":"Ma Xinyu, Yang Fengrui, Song Chenyang, Wei Jun, Jia Shuwei, Wang Zhi","doi":"10.1002/aic.70561","DOIUrl":"10.1002/aic.70561","url":null,"abstract":"Achieving high permselectivity and strong tolerance is crucial for Mg2+/Li+ separation membranes in salt lake lithium extraction. This study proposes an innovative strategy to covalently graft nitrogen-functionalized graphene oxide (NGO) onto the polyamide membrane surface. NGO was prepared by modifying GO with PEI. The polyamide membrane was synthesized via interfacial polymerization of PEI and TMC. PEI modification increases GO interlayer spacing to suppress aggregation, while GO rigidity facilitates PEI chain extension to enhance the positive charge density, whereas residual carboxyl groups from NGO provide specific ion transport channels. Simultaneously, covalent reaction ensures NGO uniform and stable grafting and prevents acyl chloride hydrolysis, constructing a robust outer barrier layer. This strategy enhances membrane stability, acid-resistance, and antibacterial properties. Consequently, the membrane flux reaches 62.7 L·m−2·h−1, and the Mg2+/Li+ separation factor is 43.12. A two-stage separation factor reaches 170.21. This membrane technology holds significant application potential in lithium extraction from salt lakes.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"72 11","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148633693","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

A long-term multiscale model for acetylene hydrochlorination: Coupling intra-particle evolution with reactor performance 乙炔加氢氯化的长期多尺度模型：粒子内演化与反应器性能的耦合

IF 4.4 3区工程技术

AIChE Journal Pub Date : 2026-10-15 Epub Date: 2026-08-06 DOI: 10.1002/aic.70585

Tianxiao Huang, Binhang Yan

{"title":"A long-term multiscale model for acetylene hydrochlorination: Coupling intra-particle evolution with reactor performance","authors":"Tianxiao Huang, Binhang Yan","doi":"10.1002/aic.70585","DOIUrl":"10.1002/aic.70585","url":null,"abstract":"The long-term economic viability of mercury-free catalysts for acetylene hydrochlorination requires precise thermal management to prevent the deactivation of sensitive active sites. We developed a validated, spatiotemporal multiscale model that integrates intrinsic kinetics with intra-particle transfer and reactor-scale transport, successfully predicting catalytic performance and deactivation trends from laboratory to pilot scale. Its modular architecture was designed to incorporate detailed sub-models, enabling explicit resolution of non-spherical catalyst geometries and intra-particle non-uniform deactivation of active sites. The analysis shows that hotspot intensity arises mainly from a mismatch between internally mass-transfer-limited heat generation and externally heat-transfer-limited heat dissipation, which ultimately controls catalyst stability. Furthermore, time-advancement simulations uncover an intra-particle activity stratification, demonstrating that spatially non-uniform activity loss buffers downstream hotspot migration and ultimately extends overall catalyst lifetime. This work provides a powerful, particle-centric modeling strategy for the design and long-term optimization of fixed-bed reactors for highly exothermic processes.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"72 11","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148688087","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

Hydrophobic fluorinated superacid resins for water-tolerant C-C coupling to high-density bio-jet fuels 用于耐水C - C偶联到高密度生物喷气燃料的疏水氟化超酸性树脂

IF 4.4 3区工程技术

AIChE Journal Pub Date : 2026-10-15 Epub Date: 2026-08-14 DOI: 10.1002/aic.70581

Junjian Xie, Xinquan Zeng, Junhao Yu, Xiu-tian-feng E, Qiangqiang Zhu, Yu Shen, Ji-Jun Zou, Qiuyu Zhang

{"title":"Hydrophobic fluorinated superacid resins for water-tolerant C-C coupling to high-density bio-jet fuels","authors":"Junjian Xie, Xinquan Zeng, Junhao Yu, Xiu-tian-feng E, Qiangqiang Zhu, Yu Shen, Ji-Jun Zou, Qiuyu Zhang","doi":"10.1002/aic.70581","DOIUrl":"10.1002/aic.70581","url":null,"abstract":"Upgrading biomass to high-performance fuel offers an effective solution to energy crisis and carbon neutrality goals, however, most value-added reaction suffers from byproduct water-induced deactivation of acid catalysts and consequent side reactions. Herein, novel hydrophobic oleophilic mesoporous fluorinated sulfonic acid resins with exceptional thermostability, superacidity, and tunable acid density were facilely synthesized via free-radical copolymerization and subsequent ion exchange. The optimal FSA-2 achieves a record bicyclic product yield of 76.7% in self-aldol condensation of cyclohexanone and a high tricyclic yield of 74.5% in alkylation of 2-methylfuran with cyclohexanone, significantly outperforming commercial Amberlyst-15, Nafion-212, and zeolite catalysts. Its superior activity arises from superacid sites, suitable acid density, and excellent hydrophobicity-oleophilicity, enabling FSA-2 to be recycled steadily for four consecutive runs. Subsequent hydrodeoxygenation affords three high-energy-density bio-jet fuels with densities of 0.825, 0.881, and 0.887 g/mL, respectively. This work provides a scalable solid acid platform for bio-jet fuel production from lignocellulose-derived compounds.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"72 11","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148729059","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

Joule self-heating enabled oxygen transport and coupled methane reactions in a La0.6Sr0.4Co0.2Fe0.8O3-δ hollow fiber membrane reactor 在La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3‐δ中空纤维膜反应器中，焦耳自热实现了氧传输和耦合甲烷反应

IF 4.4 3区工程技术

AIChE Journal Pub Date : 2026-10-15 Epub Date: 2026-08-17 DOI: 10.1002/aic.70612

Gang Wang, Hamed Abdolahimansoorkhani, Xingjian Xue

{"title":"Joule self-heating enabled oxygen transport and coupled methane reactions in a La0.6Sr0.4Co0.2Fe0.8O3-δ hollow fiber membrane reactor","authors":"Gang Wang, Hamed Abdolahimansoorkhani, Xingjian Xue","doi":"10.1002/aic.70612","DOIUrl":"10.1002/aic.70612","url":null,"abstract":"Mixed-conducting ceramic hollow fiber membranes are a versatile platform for oxygen separation, value-added chemical production, and oxy-combustion. Because oxygen permeation is thermally activated, these systems typically rely on bulky, energy-intensive furnaces that suffer from low efficiency and large thermal inertia. Joule (resistive) heating, achieved by directly applying voltage or current to the fibers, offers a compact and efficient alternative. Yet, this self-heating strategy has not been explored in methane-fueled membrane reactors. Here, La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) hollow fiber membranes are fabricated via a template-assisted rotating method and used as a model system. Their oxygen permeation under Joule heating is evaluated, followed by stability testing over ~75 h and 20 thermal cycles. A methane-fueled membrane reactor is then examined, focusing on the influence of applied voltage (temperature) and methane concentration on conversion and selectivity. Long-term reactor stability (~75 h) and the mechanisms governing oxygen transport and performance are also analyzed.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"72 11","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aic.70612","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148754534","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}

引用次数: 0

Bromide-mediated membrane-free CO2 electrolyzer design for economically efficient carbon monoxide production 溴化物介导的无膜二氧化碳电解槽设计，用于经济高效的一氧化碳生产

IF 4.4 3区工程技术

AIChE Journal Pub Date : 2026-10-15 Epub Date: 2026-07-28 DOI: 10.1002/aic.70563

Aihemaiti Tuniyazi, Jing Li, Feng Li, Yi Zhang, Yating Yuan, Shuting Xi, Sheng Zhang, Shengping Wang

{"title":"Bromide-mediated membrane-free CO2 electrolyzer design for economically efficient carbon monoxide production","authors":"Aihemaiti Tuniyazi, Jing Li, Feng Li, Yi Zhang, Yating Yuan, Shuting Xi, Sheng Zhang, Shengping Wang","doi":"10.1002/aic.70563","DOIUrl":"10.1002/aic.70563","url":null,"abstract":"Electrocatalytic CO2 reduction reaction (ECO2RR) faces limitations in conventional reactors due to high energy consumption, inefficient mass transport, and poor durability caused by ion-exchange membranes. Herein, we developed a membrane-free flow electrolyzer that dynamically decouples cathodic CO2-to-CO reduction from the anodic oxygen evolution reaction via a regenerative bromide cycle (Br−/BrO3−). Operating at 216 mA cm−2, the system achieves a record-low cell voltage of 1.85 V, maintains over 99% CO Faradaic efficiency, attains 32.9% single-pass CO2 conversion, and reaches 71.9% energy efficiency (EE), with negligible degradation over 100 h of continuous operation. Operando spectroscopy reveals that local pH stabilization at 7.2 optimizes *CO/*H adsorption, thereby enhancing CO selectivity and EE. Techno-economic analysis shows a 60% lower power cost (111.8 vs. 277.79 $ ton−1 CO) vs. conventional systems. This work provides new insights into addressing persistent challenges in ECO2RR, including mass transfer limitations, carbonate formation, and anodic reaction mismatch.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"72 11","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148633921","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

One–step aqueous synthesis of Mn–ZnO: Mitigating enthalpy–entropy trade–off for atom–economical PET upcycling 一步水合成Mn - ZnO：减轻PET原子经济型升级回收的焓熵权衡

IF 4.4 3区工程技术

AIChE Journal Pub Date : 2026-10-15 Epub Date: 2026-08-17 DOI: 10.1002/aic.70592

Wenxuan He, Zhixue Teng, Zhifeng Ao, Tiefeng Zhao, Zhigang Shen

{"title":"One–step aqueous synthesis of Mn–ZnO: Mitigating enthalpy–entropy trade–off for atom–economical PET upcycling","authors":"Wenxuan He, Zhixue Teng, Zhifeng Ao, Tiefeng Zhao, Zhigang Shen","doi":"10.1002/aic.70592","DOIUrl":"10.1002/aic.70592","url":null,"abstract":"Overcoming the enthalpy–entropy compensation effect remains a formidable challenge in chemical upcycling of polyesters. Empirical catalyst designs typically maximize Lewis acidity, lowering activation enthalpy (ΔH‡) for ester activation but triggering an entropic penalty (ΔS‡) that retards kinetics. Here, we establish a “moderate acidity” principle that balances these competing thermodynamic demands. Eyring analysis shows that optimal 5% manganese (Mn) doping enables a substantial reduction in ΔH‡ while mitigating the entropic penalty. Mn-doped zinc oxide (ZnO) catalysts prepared via microfluidic synthesis achieve optimal performance at 5% Mn doping, delivering 100% PET conversion, 94.7% BHET yield, and a space–time yield of 250 gmonomer gcat−1 h−1, twice that of pristine ZnO. Life-cycle and techno-economic assessments demonstrate 3.7-fold lower greenhouse gas emissions and 2.4-fold cost reduction relative to conventional routes. Complete atomic utilization is achieved by valorizing glycolysis mother liquor into high-performance waterborne polyurethanes, establishing a zero-waste circular economy for plastics.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"72 11","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148754531","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