AIChE Journal最新文献

Unveiling proportional three‐dimensional scale‐up behavior of a chaotic microreactor and developing mathematical models

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2026-11-11 DOI: 10.1002/aic.70767

Shi‐Xiao Wei, Hao‐Tian Tong, Ting‐Liang Xie, Shuang‐Feng Yin

{"title":"Unveiling proportional three‐dimensional scale‐up behavior of a chaotic microreactor and developing mathematical models","authors":"Shi‐Xiao Wei, Hao‐Tian Tong, Ting‐Liang Xie, Shuang‐Feng Yin","doi":"10.1002/aic.70767","DOIUrl":"https://doi.org/10.1002/aic.70767","url":null,"abstract":"Establishing effective scale‐up strategies for chaotic microreactors remains challenging due to complex chaos evolution mechanisms. This study adopts an oscillating feedback microreactor (OFM) as a representative chaotic microreactor, integrates computational fluid dynamics and experimental validation to investigate proportional three‐dimensional scale‐up. We propose a unified analytical framework that bridges flow dynamics (secondary and chaotic structures), chaotic intensity (Lyapunov exponent), and mixing performance through empirical correlations consisting of inertia‐intensification, intrinsic, and scale‐factor terms. Results demonstrate that correlations describe 1×–3× OFMs quantitatively, while 6× and 12× cases retain the inherent feedback‐driven flow and effective mixing despite kinematic prediction deviations. The practical efficacy of this strategy is verified via the continuous synthesis of FePO 4 and Ce 2 (C 2 O 4 ) 3 across various scales, yielding consistent morphologies and comparable LiFePO 4 electrochemical performance. This work establishes a robust methodology and provides guidance for the industrial scale‐up of inertia‐driven chaotic microreactors while retaining effective mixing.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"20 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149376169","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

Boosting CO2 hydrogenation via the single-atom alloy engineering in copper/yttria-based catalysts 铜/钇基催化剂单原子合金工程促进co2加氢

IF 4.4 3区工程技术

AIChE Journal Pub Date : 2026-11-10 Epub Date: 2026-08-19 DOI: 10.1002/aic.70593

Zhikun Peng, Qiufeng Liu, Kun Lu, Xingwei Xie, Zongyuan Wang, Longzhou Zhang, Zhourong Xiao, Young Dok Kim, Fei Chen, Zhongyi Liu, Kaihang Sun

{"title":"Boosting CO2 hydrogenation via the single-atom alloy engineering in copper/yttria-based catalysts","authors":"Zhikun Peng, Qiufeng Liu, Kun Lu, Xingwei Xie, Zongyuan Wang, Longzhou Zhang, Zhourong Xiao, Young Dok Kim, Fei Chen, Zhongyi Liu, Kaihang Sun","doi":"10.1002/aic.70593","DOIUrl":"10.1002/aic.70593","url":null,"abstract":"The low-temperature activity of reverse water-gas shift reaction over the oxide-supported metal catalysts is limited by the H2 activation. In this work, Co single atoms are introduced into the Y2O3-supported Cu nanoparticles to form the Co1Cu9 single-atom alloy (SAA). The atomically dispersed Co species regulates the electronic structure of Cu induced by the electronic interaction, leading to the enhanced H2 activation and boosting the charge transfer at the interfacial site. The Co1Cu9 SAA facilitates the Cu+ formation as well as the exposure of active Cu species. Combined with the results of density functional theory calculations and the in situ diffuse reflectance infrared Fourier transform spectroscopy studies, the introduction of Co single atoms is favorable for CO production through the formate route thermodynamically and kinetically. Therefore, the Co1Cu9 SAA catalyst exhibits an enhanced low-temperature catalytic activity and considerable catalyst stability compared to the Cu catalyst.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"72 12","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148768672","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

Silica-encapsulated Co/BEA core–shell catalysts for PDH: Stabilizing tetrahedral Co2+ and inhibiting coke formation 二氧化硅包封Co / BEA核壳催化剂用于PDH：稳定四面体Co 2+和抑制焦炭形成

IF 4.4 3区工程技术

AIChE Journal Pub Date : 2026-11-10 Epub Date: 2026-08-26 DOI: 10.1002/aic.70628

Yirong Wang, Qin Sun, Junbo Li, Tiantian Liu, Xiaohua Li, Liangzhi Yu, Sen Wang, Prasert Reubroycharoen, Lizhi Wu, Yu Tang, Li Tan

{"title":"Silica-encapsulated Co/BEA core–shell catalysts for PDH: Stabilizing tetrahedral Co2+ and inhibiting coke formation","authors":"Yirong Wang, Qin Sun, Junbo Li, Tiantian Liu, Xiaohua Li, Liangzhi Yu, Sen Wang, Prasert Reubroycharoen, Lizhi Wu, Yu Tang, Li Tan","doi":"10.1002/aic.70628","DOIUrl":"10.1002/aic.70628","url":null,"abstract":"Propylene is a key chemical. Propane dehydrogenation (PDH) over non-noble cobalt catalysts suffers rapid deactivation from sintering and coking. Herein, we report a core–shell catalyst (1.0Co/BEA@xSi) with a mesoporous silica shell on Co-impregnated dealuminated Beta zeolite. The silica shell enhances Co dispersion and modulates Co reduction: it promotes the formation of active tetrahedral Co2+ sites from Co3O4 while suppressing over-reduction to metallic Co0. The optimized 1.0Co/[email protected] maintains ~99% propylene selectivity and achieves a formation rate of 71.0 gC3H6·gCo−1·h−1 after 980 min, far surpassing uncoated 1.0Co/BEA and most reported Co-based PDH catalysts. In situ and post-reaction analyses show the shell strengthens propane adsorption/activation and reduces coke formation. Core–shell engineering thus stabilizes active metal states via local redox microenvironment modulation, offering new design principles for robust alkane dehydrogenation catalysts.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"72 12","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148836278","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

Enhancing CO 2 separation stability of ceramic–carbonate hollow fiber membranes via coregulation of the support and salt 通过载体与盐的协同调节提高陶瓷-碳酸盐中空纤维膜的co2分离稳定性

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2026-11-10 DOI: 10.1002/aic.70727

Yabin Ma, Jinhui Xie, Tianjia Chen, Yinmin Zhang, Yongfeng Zhang, Qi Wang, Zhifei Hao, Min Fu, Fuping Li, Shaomin Liu

{"title":"Enhancing CO 2 separation stability of ceramic–carbonate hollow fiber membranes via coregulation of the support and salt","authors":"Yabin Ma, Jinhui Xie, Tianjia Chen, Yinmin Zhang, Yongfeng Zhang, Qi Wang, Zhifei Hao, Min Fu, Fuping Li, Shaomin Liu","doi":"10.1002/aic.70727","DOIUrl":"https://doi.org/10.1002/aic.70727","url":null,"abstract":"Ceramic–carbonate dual‐phase (CCDP) hollow fiber membranes show high potential for high‐temperature CO 2 separation due to high packing density and thin walls. However, a permeability–stability trade‐off exists: pore optimization boosts CO 2 flux but accelerates carbonate loss. Here, a synergistic strategy combining ceramic support optimization and molten salt modification is proposed. Porous GDC (Ce 0.8 Gd 0.2 O 2‐δ ) supports were used, and the effect of 5 wt% nano‐TiO 2 in carbonate was studied. GDC1450 support achieved optimal porosity and strength. The membrane attained a CO 2 permeation flux of 5.32 mL·min −1 ·cm −2 at 900°C, outperforming most reported CCDP membranes. However, during a 100 h test at 700°C, its flux dropped 76% due to carbonate loss. In contrast, the nano‐TiO 2 ‐modified membrane showed flux reduction <10%. Nano‐TiO 2 enhanced carbonate retention, suppressed leakage, and improved durability. Overall, this synergistic strategy offers a viable route to overcome the trade‐off and develop CCDP membranes with both high flux and long‐term stability.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"30 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374543","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

Steam-methane reforming on a Joule-heated Ni/ZrO2 coated FeCrAl wire: Rate enhancement, support effects and multiplicity 焦耳加热Ni/ ZrO - 2涂层FeCrAl丝上的蒸汽甲烷重整：速率增强、支撑效应和多样性

IF 4.4 3区工程技术

AIChE Journal Pub Date : 2026-11-10 Epub Date: 2026-08-29 DOI: 10.1002/aic.70618

Elmer B. Ledesma, Dev Patel, Michael P. Harold

引用次数: 0

Model predictive control with inline parameter adaptation for direct crystal growth rate regulation 直接调节晶体生长速率的内联参数自适应模型预测控制

IF 4.4 3区工程技术

AIChE Journal Pub Date : 2026-11-10 Epub Date: 2026-09-08 DOI: 10.1002/aic.70648

Huitian Yu, Jiewen Zhao, Heiko Briesen

{"title":"Model predictive control with inline parameter adaptation for direct crystal growth rate regulation","authors":"Huitian Yu, Jiewen Zhao, Heiko Briesen","doi":"10.1002/aic.70648","DOIUrl":"10.1002/aic.70648","url":null,"abstract":"In batch cooling crystallization, many interactive factors, including supersaturation, reactor dimensions, and operating conditions, govern crystal growth and significantly influence product properties. Variables such as temperature or refractive index are used as surrogate control variables but have limitations in capturing growth rate complexity. Model predictive control can account for process dynamics and multiple variables but requires real-time growth rate estimates. In this study, a growth kinetics-based MPC with an inline single-crystal growth rate sensor was implemented for glycine, enabling inline adaptation of kinetic parameters and supporting stable closed-loop performance. The growth rate of the proxy crystal was verified by scanning sampled crystal populations using micro-computed tomography. Results indicate a physical limitation of constant-growth-rate control: Increasing supersaturation during cooling can promote nucleation and approach cooling capacity limits. The proposed MPC substantially reduces the need for retuning under changing process conditions and allows parameter adaptation, making it generalizable to other crystallization systems.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"72 12","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aic.70648","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148915405","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

Decoupling fluidization‐induced structural resistance and shear‐induced relaxation in gas–solid fluidized beds 气固流化床中去耦流化诱导的结构阻力和剪切诱导的弛豫

IF 3.7 3区工程技术

AIChE Journal Pub Date : 2026-11-10 DOI: 10.1002/aic.70749

Dong Wei, Song Yang, Yuxuan Tian, Xiaoliang Yan, Fei Wei, Chenxi Zhang

{"title":"Decoupling fluidization‐induced structural resistance and shear‐induced relaxation in gas–solid fluidized beds","authors":"Dong Wei, Song Yang, Yuxuan Tian, Xiaoliang Yan, Fei Wei, Chenxi Zhang","doi":"10.1002/aic.70749","DOIUrl":"https://doi.org/10.1002/aic.70749","url":null,"abstract":"Conventional measurement methods of apparent viscosity of fluidized gas–solid systems conflate the resistance associated with the fluidization state and the additional resistance variation induced by measurement‐imposed shear. Here, we characterize the coupled viscosity response to separately prescribed gas velocity and spindle rotation using in situ rotational rheology, pressure‐fluctuation analysis, particle image velocimetry, and fiber‐optic measurements. The low‐shear boundary viscosity decreased markedly with increasing gas velocity, whereas the terminal viscosity remained within 0.19–0.26 Pa·s, demonstrating distinct fluidization‐ and shear‐dependent resistance contributions. A structural relaxation index quantified their relative contrast. After finite‐range normalization, the Geldart B data collapsed onto a common Cross‐type curve with K = 24.91 s (characteristic time parameter) and m = 1.4 (dimensionless shear‐thinning index), yielding R 2 = 0.9992. This decoupling framework provides a quantitative basis for interpreting startup resistance, operating torque, and power demand in mechanically agitated or internally equipped fluidized beds.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"7 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374541","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

Surfactant headgroup charge density governs the interfacial microenvironment for selective H2O2 electrosynthesis 表面活性剂头基电荷密度决定了选择性h2o2电合成的界面微环境

IF 4.4 3区工程技术

AIChE Journal Pub Date : 2026-11-10 Epub Date: 2026-08-30 DOI: 10.1002/aic.70642

Ruizhen Song, Lei Dong, Yumei Qiao, Wangxin Ge, Chaoyi Yu, Haiyan Wang, Hongliang Jiang, Chunzhong Li

{"title":"Surfactant headgroup charge density governs the interfacial microenvironment for selective H2O2 electrosynthesis","authors":"Ruizhen Song, Lei Dong, Yumei Qiao, Wangxin Ge, Chaoyi Yu, Haiyan Wang, Hongliang Jiang, Chunzhong Li","doi":"10.1002/aic.70642","DOIUrl":"10.1002/aic.70642","url":null,"abstract":"Electrolyte engineering effectively steers reaction selectivity in electrochemical H2O2 synthesis via the two-electron oxygen reduction reaction (2e− ORR), yet rational additive design remains challenging due to limited understanding of how molecular structure governs interfacial microenvironments. Herein, we establish the headgroup charge density of anionic surfactants as a key descriptor for 2e− ORR selectivity. Systematic comparison of four dodecyl-chain surfactants (sodium dodecyl sulfate, SDS; sodium dodecyl benzene sulfonate, SDBS; sodium dodecyl sulfonate, SDSO; sodium monododecyl phosphate, SMDP) reveals a selectivity order (SMDP > SDSO > SDBS > SDS) that correlates directly with headgroup charge density and K+ binding strength. Multiscale investigations show that high-charge-density headgroups participate in K+ solvation, displacing water and rigidifying the interfacial hydrogen-bond network, creating a kinetic bottleneck for proton transfer that suppresses *OOH over-reduction. Consequently, the SMDP-modified electrolyte achieves 98% Faradaic efficiency at 200 mA cm−2 in a flow cell with stable 44 h operation.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"72 12","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148860802","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

Alloy-vacancy engineering evolved from Al–OH anchored NiCo layered structure enables durable methane dry reforming 由氢氧化铝锚定NiCo层状结构演变而来的合金空位工程使甲烷持久干重整成为可能

IF 4.4 3区工程技术

AIChE Journal Pub Date : 2026-11-10 Epub Date: 2026-09-01 DOI: 10.1002/aic.70645

Quanqi Zhang, Zhonghua Jiang, Bo Yang, Binbin He, Ye Yang, Yucai Qin, Jian Zheng, Yi Mei, Yun Zu

{"title":"Alloy-vacancy engineering evolved from Al–OH anchored NiCo layered structure enables durable methane dry reforming","authors":"Quanqi Zhang, Zhonghua Jiang, Bo Yang, Binbin He, Ye Yang, Yucai Qin, Jian Zheng, Yi Mei, Yun Zu","doi":"10.1002/aic.70645","DOIUrl":"10.1002/aic.70645","url":null,"abstract":"Alloying Ni with another metal on γ-Al2O3 support holds considerable promise to enhance carbon-resistance in dry reforming of methane (DRM), yet its effectiveness is constrained by poorly controlled alloy structure and surface Al-OH groups. Herein, bimetallic NiCo/γ-Al2O3 catalysts were designated using electropositive NiCo complexes via a strong electrostatic adsorption strategy. The NiCo alloy and oxygen vacancy were primarily derived from the evolution of surface Al-μ2-OH and Al-μ3-OH groups anchored NiCo layered structures. The optimized Ni3.0Co3.0Al catalyst achieved near-thermodynamic-equilibrium CH4 and CO2 conversions, along with ultra-low coke deposition rate (0.03 mgcoke·gcat−1·h−1) after 200 h on-stream at 600°C. Microkinetic and in situ FTIR studies elucidated the reaction mechanism, wherein CHx* species from CH4 decomposition on atomically uniform NiCo alloys were rapidly eliminated by surface Al–OH and reactive O* generated from CO2 dissociation on limited oxygen vacancies, forming labile HCOO* and CHxO* intermediates, while effectively suppressing the Boudouard reaction, thereby ensuring exceptional catalyst longevity.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"72 12","pages":""},"PeriodicalIF":4.4,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148860798","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

Reply to Smallenburg: Near-melting nucleation and the exponential growth of hard-sphere nucleation times 近熔融形核和硬球形核时间的指数增长

IF 4.4 3区工程技术

AIChE Journal Pub Date : 2026-11-10 Epub Date: 2026-09-11 DOI: 10.1002/aic.70617

Roseanna N. Zia

引用次数: 0