Reaction Chemistry & Engineering最新文献

Outstanding Reviewers for Reaction Chemistry & Engineering in 2024 2024年《反应化学与工程》优秀审稿人

IF 3.1 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-07-25 DOI: 10.1039/D5RE90026C

引用次数: 0

Opportunities for automation in continuous dynamic flow separation 在连续动态流动分离中实现自动化的机会

IF 3.1 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-07-15 DOI: 10.1039/D5RE00215J

Chetsada Khositanon, Panitan Thakhiew, Charoen Chinwanitcharoen, Kousuke Hiromori and Nopphon Weeranoppanant

{"title":"Opportunities for automation in continuous dynamic flow separation","authors":"Chetsada Khositanon, Panitan Thakhiew, Charoen Chinwanitcharoen, Kousuke Hiromori and Nopphon Weeranoppanant","doi":"10.1039/D5RE00215J","DOIUrl":"https://doi.org/10.1039/D5RE00215J","url":null,"abstract":"Many separation techniques, such as chromatography, adsorption, and filtration, are dynamic by nature, with the profiles of chemical species varying over time. This time-dependent behavior makes dynamic flow separation inherently batchwise. Recently, automation has enabled the transformation of these batchwise processes into continuous operations. Automation devices, including separators, detectors/transmitters, control systems, and control devices, can be implemented for either open-loop or closed-loop control. In this minireview, we provide an overview of recent technologies for automated dynamic flow separation systems. Major automated separation techniques, such as liquid–liquid extraction, counter-current chromatography, flash chromatography, and dead-end filtration, are highlighted to illustrate how automation facilitates their transition to continuous operation. Additional examples of integrated reaction–separation systems and self-optimizing platforms for identifying optimal separation conditions are presented as part of the outlook for automated setups. Challenges related to accurate in-line detection, complex sample matrices, and varying physical properties are also addressed.","PeriodicalId":101,"journal":{"name":"Reaction Chemistry & Engineering","volume":" 9","pages":" 1978-1988"},"PeriodicalIF":3.1,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction: Optimization of low-temperature pyrolysis of dioxins in fly ash from municipal solid waste incineration: adding catalysts and inhibitors 修正：城市生活垃圾焚烧飞灰中二恶英低温热解的优化：添加催化剂和抑制剂

IF 3.4 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-07-10 DOI: 10.1039/D5RE90022K

Zhuoyu Wen, Weishi Li, Li Li, Xiaoting Li, Dahai Yan and Yang Liao

引用次数: 0

Continuous flow photochemical synthesis of metal–ceramic composite microparticles† 金属-陶瓷复合微粒的连续流光化学合成

IF 3.4 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-07-01 DOI: 10.1039/D5RE00199D

Hsin-Mei Kao, Kwangtae Son, Cheng-Hsiao Tsai, Ningmo Cheng, Changqing Pan, Nahal Ghanadi, Somayeh Pasebani, Brian K. Paul and Chih-Hung Chang

引用次数: 0

Unraveling the role of ultrasound in hydrothermal interzeolite conversion using a tubular ultrasound-integrated reactor. 利用管式超声集成反应器揭示超声在热液沸石间转化中的作用。

IF 3.4 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-06-25 DOI: 10.1039/d5re00149h

Elena Brozzi, Michiel Dusselier, Simon Kuhn

{"title":"Unraveling the role of ultrasound in hydrothermal interzeolite conversion using a tubular ultrasound-integrated reactor.","authors":"Elena Brozzi, Michiel Dusselier, Simon Kuhn","doi":"10.1039/d5re00149h","DOIUrl":"10.1039/d5re00149h","url":null,"abstract":"In the past years, ultrasound has been considered a sustainable process intensification technique for zeolite synthesis. However, understanding the link between ultrasound phenomena and their related effects has remained a challenge due to the limited availability of hydrothermal ultrasonic reactors and parameter standardization among the studies. In this work, a novel ultrasound-integrated tubular coiled reactor is presented, which enables fast and efficient ultrasonic hydrothermal zeolite synthesis. Specifically, the effect of ultrasound irradiation and its underlying mechanisms on high silica FAU-to-MFI interzeolite conversion is studied. Unseeded syntheses in the presence of an organic structure-directing agent (OSDA) are performed at 160 °C for residence times up to 2 h. The presence of hydroxyl radicals generated by ultrasound is assessed via terephthalic acid dosimetry at different temperatures and pressures as a measurement of the cavitation activity. The application of 20 W mL-1 of suspension reveals an enhanced MFI growth rate and faster crystallization completion, resulting in an overall increase in the mean crystal size. Ultrasound is also successful in counteracting solid deposition on the walls of the coiled reactor. Applying hydrothermal conditions to this setup suppresses radical formation, indicating very weak transient cavitation activity. Therefore, these observations are attributed to the enhanced mass transfer via ultrasonic wave propagation, which renders the dissolved material more readily available for crystal growth.","PeriodicalId":101,"journal":{"name":"Reaction Chemistry & Engineering","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12223963/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144574514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetically tunable, subzero-active, visual time–temperature indicators based on the permanganate–oxalate reaction† 动力学可调，亚零活性，基于高锰酸盐-草酸盐反应的视觉时间-温度指示器

IF 3.4 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-06-16 DOI: 10.1039/D5RE00192G

Jorvani Cruz Villarreal, Emil Ljungberg, Nilojan Jehanathan, Milap Owens, Anika Li and Chad R. Borges

{"title":"Kinetically tunable, subzero-active, visual time–temperature indicators based on the permanganate–oxalate reaction†","authors":"Jorvani Cruz Villarreal, Emil Ljungberg, Nilojan Jehanathan, Milap Owens, Anika Li and Chad R. Borges","doi":"10.1039/D5RE00192G","DOIUrl":"https://doi.org/10.1039/D5RE00192G","url":null,"abstract":"Biological products and specimens often require consistent ultracold storage to preserve their integrity. Existing time–temperature indicators (TTIs) are inadequate for monitoring ultracold conditions at the individual aliquot level. We adapted the autocatalytic permanganate–oxalate reaction to create visual TTIs functional below 0 °C. Using eutectic compositions of LiClO4, NaClO4, and Mg(ClO4)2, we depressed the melting points of the reaction mixtures to −18 °C, −37 °C, and −67 °C, respectively. The incorporation of perchlorate salts as antifreeze systems did not derail the kinetic behavior of the permanganate–oxalate reaction and allowed the reactions to pause below their melting points. Here, we developed and characterized eight customized TTIs, running from five minutes at 25 °C to 7 days at −20 °C. Temperature sensitivity was consistent with Arrhenius behavior (i.e., exponential increases in run time with linear decreases in temperature). The TTIs exhibited good accuracy and reproducibility, with within-batch and between-batch run-time precision at the targeted temperatures of ≤4.8% CV and ≤7.5% CV, respectively. The average absorbance vs. time trajectories, expressed as RMSD %CVs, were 4.5% for intra-batch and 10.4% for inter-batch runs. Indicators withstood multiple freeze/thaw cycles or extended pre-freezing periods with minimal impact on reaction kinetics. Once activated and stored below their melting points, TTIs maintained color intensity for at least 12 months. This work establishes the permanganate–oxalate system in eutectic perchlorate-based antifreeze solutions as a simple, inexpensive approach for ultracold-active TTIs, offering customizable kinetics and robust performance. The described TTIs can serve to improve quality monitoring of biologicals and biospecimens during ultracold storage and handling.","PeriodicalId":101,"journal":{"name":"Reaction Chemistry & Engineering","volume":" 8","pages":" 1741-1757"},"PeriodicalIF":3.4,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gas–solid two-phase flow low-temperature solid-phase method: a novel approach to mechanically synthesize heterometallic–organic frameworks 气固两相流低温固相法：机械合成异金属有机骨架的新方法

IF 3.1 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-06-16 DOI: 10.1039/D5RE00177C

Neng mei Deng, Yang Liu, Lu lu Tang, Xu cheng Fu and Jun Zhao

引用次数: 0

An integrated reaction model of guaiacol hydrodeoxygenation using activated carbon supports: effects of support properties, metals, and solvents† 活性炭载体对愈创木酚加氢脱氧的综合反应模型：载体性质、金属和溶剂的影响

IF 3.1 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-06-11 DOI: 10.1039/D5RE00179J

Lei Yu, Robert X. Gottlieb, Jeffrey R. Page, Julia A. Valla and Matthew D. Stuber

{"title":"An integrated reaction model of guaiacol hydrodeoxygenation using activated carbon supports: effects of support properties, metals, and solvents†","authors":"Lei Yu, Robert X. Gottlieb, Jeffrey R. Page, Julia A. Valla and Matthew D. Stuber","doi":"10.1039/D5RE00179J","DOIUrl":"https://doi.org/10.1039/D5RE00179J","url":null,"abstract":"The hydrodeoxygenation (HDO) of guaiacol, a model compound for lignin-derived pyrolysis oils, was investigated using Ru and Ni catalysts supported on activated carbons derived from both commercial and renewable (food waste) sources. Comprehensive characterization of support properties including porosity, surface area, hydrophobicity, and morphology revealed their significant influence on catalyst performance. Liquid-phase HDO reactions were conducted in both aqueous and organic (decane) environments to evaluate solvent effects on reaction pathways and product distributions. Ru-based catalysts demonstrated superior activity compared to Ni-based catalysts, while supports with higher mesoporosity facilitated better metal dispersion and enhanced catalytic performance. Notably, food waste-derived activated carbon supports performed comparably or better than commercial activated carbon when combined with Ru, indicating their potential as sustainable catalyst supports. Mathematical optimization techniques were employed to estimate kinetic parameters and elucidate reaction pathways, revealing notable differences between aqueous and organic media. Specifically, methoxycyclohexanone dominated in organic medium, while cyclohexanol prevailed in aqueous medium. The optimization study identified that cyclohexanol was not an intermediate for cyclohexane production, contrary to conventional understanding. Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) analysis provided insights into adsorption phenomena, explaining carbon balance discrepancies observed particularly in aqueous-phase reactions. This integrated experimental and computational approach advances the understanding of guaiacol HDO reaction mechanisms and provides guidance for the rational design of efficient catalysts for bio-oil upgrading.","PeriodicalId":101,"journal":{"name":"Reaction Chemistry & Engineering","volume":" 9","pages":" 2148-2169"},"PeriodicalIF":3.1,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Metal and non-metal oxide-supported selenium as potential industrial catalysts 金属和非金属氧化物负载的硒作为潜在的工业催化剂

IF 3.4 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-06-10 DOI: 10.1039/D5RE00066A

Meng Ge, Tao Ju, Yiyang Zhang and Daming Yong

引用次数: 0

NiFe2O4@SiO2-immobilized copper Schiff base complex as a versatile heterogeneous catalyst for efficient one-pot multicomponent synthesis of bioactive naphthopyran derivatives† NiFe2O4@SiO2-immobilized铜席夫碱配合物作为高效一锅多组分合成生物活性萘吡喃衍生物的多相催化剂†

IF 3.1 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-06-10 DOI: 10.1039/D5RE00146C

Sneha Paul, Thangjam Sanjurani, Anjana Gorai and Pranjit Barman

{"title":"NiFe2O4@SiO2-immobilized copper Schiff base complex as a versatile heterogeneous catalyst for efficient one-pot multicomponent synthesis of bioactive naphthopyran derivatives†","authors":"Sneha Paul, Thangjam Sanjurani, Anjana Gorai and Pranjit Barman","doi":"10.1039/D5RE00146C","DOIUrl":"https://doi.org/10.1039/D5RE00146C","url":null,"abstract":"Herein, we have presented the synthesis of a Cu(II) Schiff base metal complex immobilized on a silica-coated NiFe2O4 magnetic nanoparticle (MNP) surface, forming a novel heterogeneous and magnetically retrievable nanocatalyst, NiFe2O4@SiO2@CuSB. Comprehensive characterization through FT-IR, PXRD, SEM, EDS, TEM, SAED, VSM, BET, and XPS confirms the catalyst's structure, surface morphology, elemental composition, and properties. Using a one-pot multicomponent synthesis of naphthopyran derivatives, the catalytic performance of NiFe2O4@SiO2@CuSB was evaluated. This efficient, eco-friendly protocol enables the synthesis of naphthopyran derivatives using a diverse range of aldehydes, malononitrile, and 2-naphthol, exhibiting excellent functional group tolerance. The desired products have been synthesized in high yields without any byproducts. The heterogeneity of the solid nanocatalyst was assessed using a hot filtration test. This innovative catalyst offers a practical way to efficiently produce bioactive compounds, which have applications in medical chemistry.","PeriodicalId":101,"journal":{"name":"Reaction Chemistry & Engineering","volume":" 9","pages":" 2121-2136"},"PeriodicalIF":3.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0