Industrial & Engineering Chemistry Research最新文献

Passive Single-Chamber Micromixer with High Throughput and Low-Pressure Drop 无源单室微混合器，高通量，低压降

IF 4.2 3区工程技术

Industrial & Engineering Chemistry Research Pub Date : 2025-06-19 DOI: 10.1021/acs.iecr.5c00965

Hewen Shang, Cong Xu

{"title":"Passive Single-Chamber Micromixer with High Throughput and Low-Pressure Drop","authors":"Hewen Shang, Cong Xu","doi":"10.1021/acs.iecr.5c00965","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c00965","url":null,"abstract":"Passive micromixers play a vital role in microfluidic chemical engineering; however, enhancing their throughput while maintaining low energy consumption, specifically low-pressure drop, remains a significant challenge due to the constraints imposed by their narrow microchannels. In this study, a passive single-chamber micromixer (SCM) was designed to achieve high throughput and efficient mixing at low-pressure drop. The novel micromixer has a simple and streamlined mixing chamber, in which a strong oscillating flow is generated based on the Coanda effect. Consequently, intensive chaotic convection is induced to achieve efficient mixing at low-pressure drop. A mixing effectiveness index (MEI), including the mixing index, global energy dissipation rate, residence time, and fluid properties, was proposed to assess the comprehensive performance of the proposed micromixer and others. The flow patterns, mixing performance, and pressure drop of the SCM were investigated using CFD simulations and dye tracer experiments. The results show that the SCM generates a periodic oscillation at a high throughput of 7.2∼21.6 mL/min (Re = 100∼600), achieving the maximum mixing index of 0.81 and a reduction of 5–9% in the pressure drop. The MEI of the SCM is significantly higher than that of existing passive chaotic convection micromixers. The SCM provides a way to significantly increase throughput at low-pressure drop and can advance the application of passive micromixers in large-scale production.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"36 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144319527","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

Influence of Gel on the Payne Effect and Mullins Effect of Butadiene Rubber 凝胶对丁二烯橡胶Payne效应和Mullins效应的影响

IF 4.2 3区工程技术

Industrial & Engineering Chemistry Research Pub Date : 2025-06-19 DOI: 10.1021/acs.iecr.5c01101

Xuanyu Shi, Yaping Qu, Yutao Di, Qi Zhou, Wei Li

引用次数: 0

Regulating the Morphology and Catalytic Performance of Titanium Silicalite-2 Zeolite 钛硅-2沸石的形态及催化性能调控

IF 4.2 3区工程技术

Industrial & Engineering Chemistry Research Pub Date : 2025-06-19 DOI: 10.1021/acs.iecr.5c01423

Xin Wang, Yi Zuo, Gudan Li, Jiajun Cai, Zhenghao Jia, Hong Yang, Xinwen Guo

{"title":"Regulating the Morphology and Catalytic Performance of Titanium Silicalite-2 Zeolite","authors":"Xin Wang, Yi Zuo, Gudan Li, Jiajun Cai, Zhenghao Jia, Hong Yang, Xinwen Guo","doi":"10.1021/acs.iecr.5c01423","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c01423","url":null,"abstract":"The morphology of zeolites plays a crucial role in determining their catalytic performance by influencing the effective access to active sites of the zeolites. In this study, the morphology of a titanium silicalite-2 (TS-2) zeolite (molar Si/Ti = 40) is regulated by adding ammonium carbonate into the synthesis system. This effectively alters the morphology of TS-2 particles, from the large 5–10 μm spherical aggregates made of self-assembled small crystals of ∼300 nm to monodispersed grain-shaped submicron-sized particles or monodispersed thin ribbon crystals of ∼25 nm thickness along the crystallographic b-axis. Concurrently, the content of octahedrally coordinated Ti increases in TS-2 samples synthesized in the presence of ammonium carbonate. When tested as catalysts in phenol hydroxylation, it reveals that this transformation from large spherical aggregates to grain-like smaller particles and then to thin ribbon crystals leads to a significant increase in the catechol selectivity and a small but steady increase in phenol conversion. The noticeable increase in catechol selectivity highlights the important effect of particle morphology on the effectiveness of TS-2 zeolites.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"38 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144319478","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

Mixed-Matrix Membranes Embedded with Ultramicroporous Metal–Organic Framework Nanosheets for Enhanced Propylene/Propane Separation 嵌入超微孔金属-有机框架纳米片的混合基质膜增强丙烯/丙烷分离

IF 4.2 3区工程技术

Industrial & Engineering Chemistry Research Pub Date : 2025-06-19 DOI: 10.1021/acs.iecr.5c00833

Rimin You, Xiaobing Wang, Xiaofei Lu, Xian Suo, Liyuan Chen, Lifeng Yang, Huabin Xing, Xili Cui

引用次数: 0

Enhanced Multifunctionality of Cellulose Paper via Conjugating with Photocontrollable Profragrances 通过与光可控芳香剂偶联增强纤维素纸的多功能性

IF 4.2 3区工程技术

Industrial & Engineering Chemistry Research Pub Date : 2025-06-19 DOI: 10.1021/acs.iecr.5c00635

Lirui Lu, Shilong Su, Feifei Long, Lizhuang Zhong, Ming Liu, Jing Hu

{"title":"Enhanced Multifunctionality of Cellulose Paper via Conjugating with Photocontrollable Profragrances","authors":"Lirui Lu, Shilong Su, Feifei Long, Lizhuang Zhong, Ming Liu, Jing Hu","doi":"10.1021/acs.iecr.5c00635","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c00635","url":null,"abstract":"Multifunctional paper-based materials have garnered considerable attention due to their biodegradability, cost-effectiveness, recyclability, and flexibility. However, they often face intrinsic wettability, microbial growth, and thermal instability. Herein, we developed an innovative multifunctional cellulose paper by covalently conjugating with coumarin-based photocontrollable profragrances. The synthesized profragrances exhibited enhanced thermal stability, precise photocontrol, and sustainable release properties. Subsequently, the cellulose paper achieved significantly ultrahigh conjugation than those observed with physical modification of fragrances or profragrances, ensuring robust adhesion and preventing wash-out. Additionally, the incorporation of hydrophobic profragrances enhanced the hydrophobicity of the multifunctional paper, yielding a water contact angle exceeding 95°. The chemical modification remarkably improved thermal stability compared to the physical modification. Ultimately, the novel cellulose paper exhibited photocontrollable pleasant aroma and demonstrated high antibacterial activity, which significantly enhanced bioactive availability during use and stability during storage, suggesting its great potential for food packaging, air clearing, mold prevention, and anticounterfeiting.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"12 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144319475","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

Research on the K2SO4 Synthesis Process Based on the Nonequilibrium-Phase Diagram of the Na+, K+//Cl–, SO42––H2O System 基于Na+， K+//Cl -， SO42—H2O体系非平衡相图的K2SO4合成工艺研究

IF 4.2 3区工程技术

Industrial & Engineering Chemistry Research Pub Date : 2025-06-19 DOI: 10.1021/acs.iecr.5c00555

Zuofeng Yin, Yun Li, Hongfei Guo, Xiuwu Liu, Jilin Cao

{"title":"Research on the K2SO4 Synthesis Process Based on the Nonequilibrium-Phase Diagram of the Na+, K+//Cl–, SO42––H2O System","authors":"Zuofeng Yin, Yun Li, Hongfei Guo, Xiuwu Liu, Jilin Cao","doi":"10.1021/acs.iecr.5c00555","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c00555","url":null,"abstract":"To optimize the production process of K2SO4, this study employs the equilibrium cosaturated solution boiling evaporation crystallization method to determine the nonequilibrium-phase diagram of the Na+, K+//Cl–, SO42––H2O quaternary system under boiling evaporation conditions. Based on the nonequilibrium-phase diagram and the 25 °C equilibrium-phase diagram of the Na+, K+//Cl–, SO42––H2O system, the traditional two-step method for preparing and separating K2SO4 via the double decomposition reaction of KCl and Na2SO4 is optimized. Process calculations and experimental validations are conducted to evaluate the improvements. In addition to reducing the circulation volume of the mother liquor and the evaporation water volume, thereby lowering energy consumption, the optimized production process also achieved a 26.85% increase in the single-pass yield of the byproduct NaCl.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"1 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144319528","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

Techno-Economic Assessment of Three Different Cases for Hydrogen Production Using Carburization Looping Reforming 三种渗碳循环重整制氢方案的技术经济评价

IF 4.2 3区工程技术

Industrial & Engineering Chemistry Research Pub Date : 2025-06-19 DOI: 10.1021/acs.iecr.5c00019

Felipe G. Camacho, Paulo Affonso Latoh de Souza, Nader Mahinpey

引用次数: 0

Impacts of Heat Treatment and Long-Term Storage on Methylaluminoxane Composition, Catalytic Activity, and Polyethylene Properties 热处理和长期储存对甲基铝氧烷组成、催化活性和聚乙烯性能的影响

IF 4.2 3区工程技术

Industrial & Engineering Chemistry Research Pub Date : 2025-06-18 DOI: 10.1021/acs.iecr.5c01770

Zhongyao Zhang, Hengyu Zhong, Yanjiao Xu, Mengbo Zhang, Haomiao Zhang, Jingdai Wang, Yongrong Yang

{"title":"Impacts of Heat Treatment and Long-Term Storage on Methylaluminoxane Composition, Catalytic Activity, and Polyethylene Properties","authors":"Zhongyao Zhang, Hengyu Zhong, Yanjiao Xu, Mengbo Zhang, Haomiao Zhang, Jingdai Wang, Yongrong Yang","doi":"10.1021/acs.iecr.5c01770","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c01770","url":null,"abstract":"Methylaluminoxane (MAO) is a critical activator in olefin polymerization, but it exhibits limited stability under high temperatures or prolonged storage. In industrial processes, MAO is typically concentrated by heating in toluene under vacuum and stored for months before use, however, the effects of these processes on its stability are poorly understood. We investigate the stability of freshly prepared MAO subjected to heat treatment and long-term storage, focusing on changes in aluminum content, methyl-to-aluminum ratio, polymerization activity, and properties of the resulting polymer. Our results demonstrate that higher temperatures, extended treatment or storage times, and increased initial MAO mass fractions contribute to gel formation within MAO solutions, declining cocatalytic activity. Using heat-treated-MAO/Cp2ZrCl2 for ethylene polymerization results in PE with reduced molecular weight compared to fresh MAO, while the effect on dispersity (D̵) is complex, exhibiting both increases and decreases in different cases. The aging of MAO leads to the formation of insoluble, high-molecular-weight gels. Analysis of the gel phase reveals an elevated Me/Al ratio, indicating selective partitioning of MAO species during gelation. Scanning electron microscopy (SEM) reveals that these gels consist of coalesced, interconnected clusters with a porous, amorphous morphology composed of nanoscale primary particles. Such morphological evolution correlates with the observed decline in polymerization activity. Our findings offer insights for optimizing MAO concentration processes and storage conditions to preserve its performance in industrial applications.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"37 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144311953","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

Zeolitic Imidazolate Framework-93 and Its Derivatives: Synthesis, Properties, and Applications 沸石咪唑酸酯骨架-93及其衍生物：合成、性质及应用

IF 4.2 3区工程技术

Industrial & Engineering Chemistry Research Pub Date : 2025-06-18 DOI: 10.1021/acs.iecr.5c00549

Yu Liang, Haiqi Zhang, Linmei Li, Baiming Liang, Wenli Xu, Yu Wang, Hongxia Xi, Chongxiong Duan

引用次数: 0

Hydrogenation of Nitrophenol via Nickel-Based Catalytic Membranes with Engineered Surface Affinity 工程表面亲和镍基催化膜催化硝基苯酚加氢

IF 4.2 3区工程技术

Industrial & Engineering Chemistry Research Pub Date : 2025-06-18 DOI: 10.1021/acs.iecr.5c01244

Yiqun Liu, Zhengyan Qu, Jiuxuan Zhang, Hong Jiang, Zhenchen Tang, Weihong Xing, Rizhi Chen

{"title":"Hydrogenation of Nitrophenol via Nickel-Based Catalytic Membranes with Engineered Surface Affinity","authors":"Yiqun Liu, Zhengyan Qu, Jiuxuan Zhang, Hong Jiang, Zhenchen Tang, Weihong Xing, Rizhi Chen","doi":"10.1021/acs.iecr.5c01244","DOIUrl":"https://doi.org/10.1021/acs.iecr.5c01244","url":null,"abstract":"Selective hydrogenation of nitro groups to amino groups is a crucial reaction in industries, with the hydrogenation of p-nitrophenol (PNP) to p-aminophenol (PAP) being a key step in the production of fine chemicals and environmental pollution mitigation. Conventional catalysts often suffer from nanoparticle agglomeration and poor separation, limiting their efficiency. Here, we developed Ni-based catalytic membranes derived from metal–organic frameworks (MOFs) with –NH2 groups to enhance catalytic performance and stability. The Ni/CMs were prepared by growing Ni-based precursors in situ on ceramic membranes (CMs) via hydrothermal synthesis and pyrolysis. Among three different Ni/CMs, Ni/CM-ABDC, using 2-aminobenzene dicarboxylic acid (ABDC) as the ligand, exhibited the highest catalytic activity, achieving the PNP reduction rate of 14.3 h–1 and its complete conversion in 90 min and maintaining high stability over five reaction cycles. This was due to the uniform dispersion of Ni nanoparticles (Ni NPs), the mesoporous N-doped carbon matrix, and the highest Ni0/Ni2+ ratio. In contrast, Ni/CM-Urea and Ni/CM-BDC showed inferior performance. Mechanistic studies revealed that the N-doped carbon matrix enhanced selective adsorption of PNP and desorption of PAP, promoting the hydrogenation process. This work demonstrates the potential of MOF-derived Ni/CMs for efficient hydrogenation of nitro-groups.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"15 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144311952","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