Reaction Chemistry & Engineering最新文献_第5页

Multi-stage spiral-type structured catalyst system for direct large-scale methanation of industrial CO2 emissions: a feasibility study† 多级螺旋型结构催化剂系统用于工业二氧化碳排放的直接大规模甲烷化：可行性研究

IF 3.4 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-04-09 DOI: 10.1039/D4RE00606B

Hiroshi Akama, Ryo Watanabe, Priyanka Verma and Choji Fukuhara

{"title":"Multi-stage spiral-type structured catalyst system for direct large-scale methanation of industrial CO2 emissions: a feasibility study†","authors":"Hiroshi Akama, Ryo Watanabe, Priyanka Verma and Choji Fukuhara","doi":"10.1039/D4RE00606B","DOIUrl":"https://doi.org/10.1039/D4RE00606B","url":null,"abstract":"Anthropogenic CO2 emission to the atmosphere has led to severe climate changes and global warming worldwide. The conversion of CO2 into value-added products is an important and promising solution to reduce the atmospheric levels of CO2 and overcome the energy crisis. The CO2 methanation reaction is being explored by many researchers and industries for the fixation of CO2 as a power-to-gas technology. In this report, we have attempted CO2 methanation in the presence of O2 using a lab-scale two-stage type reactor system with Ni and Ru-based spiral-type structured catalysts. Furthermore, the thermodynamic properties of both catalysts were evaluated in the presence and absence of O2. The combustion of H2 due to the coexistence of O2 promoted methanation even under room temperature conditions and showed excellent methanation performance (conv. 90% & selectivity 100%) for relatively larger amounts (5 L min−1) of gas treatment. Additionally, the heat management for the reactors by adiabatic insulation was found to be effective in improving the catalytic performance and thermodynamic properties.","PeriodicalId":101,"journal":{"name":"Reaction Chemistry & Engineering","volume":" 7","pages":" 1527-1538"},"PeriodicalIF":3.4,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472752","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

Continuous-flow synthesis of special Au–Ag bimetallic nanoparticles and their application for SERS detection of thiram in cherry juice† 特殊金银双金属纳米颗粒的连续流合成及其在樱桃汁中硫胺SERS检测中的应用

IF 3.4 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-04-08 DOI: 10.1039/D5RE00063G

Li Sun, Mingjian Jiang, Yuan Zhi, Hua Zhang, Binlin Dou, Yuejin Shan, Jian Chen and Xiangyang Xu

引用次数: 0

Conversion of fructose to 5-hydroxymethylfurfural in a ternary deep eutectic solvent-based biphasic system at mild temperature 温和条件下三元深共晶溶剂双相体系中果糖转化为5-羟甲基糠醛的研究

IF 3.4 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-04-08 DOI: 10.1039/D5RE00057B

Wei Qi, Yuqi Chen, Liangzhi Li, Xin Ju, Hongwei Chen and Lishi Yan

{"title":"Conversion of fructose to 5-hydroxymethylfurfural in a ternary deep eutectic solvent-based biphasic system at mild temperature","authors":"Wei Qi, Yuqi Chen, Liangzhi Li, Xin Ju, Hongwei Chen and Lishi Yan","doi":"10.1039/D5RE00057B","DOIUrl":"https://doi.org/10.1039/D5RE00057B","url":null,"abstract":"The catalytic conversion of fructose to 5-hydroxymethylfurfural (5-HMF) in a ternary deep eutectic solvent (DES)/methyl isobutyl ketone (MIBK) biphasic system at mild temperatures (50–70 °C) was investigated in this work. The ternary DES consisting of choline chloride (ChCl), benzene sulfonic acid (BSA) and ethylene glycol (EG) was physicochemically characterized by FT-IR and 1H NMR. The ternary DES(ChCl–BSA–EG)/MIBK biphasic system (ChCl/BSA/EG = 2 : 1 : 1) resulted in an 82.0% 5-HMF yield and 96.2% corresponding selectivity at 60 °C for 2 h. The kinetic analysis further revealed that the rate constant of fructose dehydration (k1) was much higher than the rate constant of 5-HMF conversion (k2). The calculated ratio of k1/k2 was 16.1. The proposed reaction mechanism suggested that the synergetic effect of the three components of the ternary DES facilitates the elimination of water molecules from fructose and the formation of 5-HMF, while the MIBK extraction phase suppresses the by-products of 5-HMF as well. The present work provides a green and sustainable pathway for 5-HMF production with a high yield and high selectivity at mild temperatures.","PeriodicalId":101,"journal":{"name":"Reaction Chemistry & Engineering","volume":" 7","pages":" 1587-1595"},"PeriodicalIF":3.4,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472763","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

Microfluidic preparation and antibacterial properties of polyvinyl alcohol hydrogel microfibers loaded with MOF microparticles† 载MOF微颗粒聚乙烯醇水凝胶微纤维的微流控制备及其抗菌性能

IF 3.4 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-04-07 DOI: 10.1039/D4RE00472H

Ning Zhao, Shi-Yu Liu, Zhuang Liu, Xiao-Jie Ju, Rui Xie, Wei Wang, Da-Wei Pan and Liang-Yin Chu

{"title":"Microfluidic preparation and antibacterial properties of polyvinyl alcohol hydrogel microfibers loaded with MOF microparticles†","authors":"Ning Zhao, Shi-Yu Liu, Zhuang Liu, Xiao-Jie Ju, Rui Xie, Wei Wang, Da-Wei Pan and Liang-Yin Chu","doi":"10.1039/D4RE00472H","DOIUrl":"https://doi.org/10.1039/D4RE00472H","url":null,"abstract":"Antimicrobial polyvinyl alcohol (PVA) hydrogel microfibers that contain metal–organic framework microparticles with Ag+ (AMOF) and Zn2+ (ZMOF) and cellulose nanocrystals (CNCs) are controllably and continuously prepared by a microfluidic spinning method. The CNC endows the PVA networks with good mechanical properties via the formation of hydrogen bonds, while the AMOF and ZMOF allow the release of Ag+ and Zn2+ respectively for achieving antibacterial and antioxidant properties. The microfiber size can be flexibly and precisely regulated by adjusting the flow rates of both dispersed and continuous phases. The PVA hydrogel microfibers with both AMOF and ZMOF show tensile strengths of 4.78 MPa, and good stretchability of 768.3%. These microfibers show long-lasting ion release behaviors, with the released concentrations of Ag+ and Zn2+ ions reaching 1.113 mg L−1 and 0.005 mg L−1 within 96 h. Meanwhile, these microfibers exhibit good antimicrobial properties against E. coli O157:H7 and S. aureus within 24 h due to the Ag+ released from the AMOF. Moreover, such microfibers show good antioxidant properties by continuously inhibiting ·OH generation over 12 h due to the Zn2+ released from the ZMOF. This work provides a novel strategy for rational design and creation of hydrogel microfiber materials with good antimicrobial performances.","PeriodicalId":101,"journal":{"name":"Reaction Chemistry & Engineering","volume":" 7","pages":" 1497-1507"},"PeriodicalIF":3.4,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472749","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

Photocatalytic degradation of ciprofloxacin and metformin in a continuous-flow tubular reactor† 连续流管式反应器中环丙沙星和二甲双胍的光催化降解研究

IF 3.4 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-04-04 DOI: 10.1039/D5RE00021A

Rahul Binjhade, Raka Mondal and Sourav Mondal

{"title":"Photocatalytic degradation of ciprofloxacin and metformin in a continuous-flow tubular reactor†","authors":"Rahul Binjhade, Raka Mondal and Sourav Mondal","doi":"10.1039/D5RE00021A","DOIUrl":"https://doi.org/10.1039/D5RE00021A","url":null,"abstract":"The use of continuous photocatalytic reactors is needed for sustainable water treatment technology. However, scalability of such units is challenging due to the appropriate (uniform) illumination over the photocatalyst surface, and hence limits its application. Uniform light intensity distribution can be achieved in tubular reactors with radial illumination, and such systems are easy to scale-up (being modular in design). We investigate the photocatalytic degradation of CIP and metformin (emerging pharmaceutical pollutants) using a continuous-flow reactor equipped with a titanium dioxide (TiO2-coated) quartz tube. Under ultraviolet (UVC) light, the system exhibits 92% degradation efficiency for both drugs individually and 85–90% for mixtures. Total organic carbon (TOC) analysis is employed to evaluate the degree of mineralization for both drugs. After a 9 hour treatment period, ciprofloxacin exhibited up to a 50% reduction in organic carbon, while metformin showed a reduction of up to 70%. Detailed liquid chromatography-mass spectroscopy (LC-MS/MS) analysis revealed the degradation pathways, confirming the fate of the pharmaceutical pollutants.","PeriodicalId":101,"journal":{"name":"Reaction Chemistry & Engineering","volume":" 7","pages":" 1577-1586"},"PeriodicalIF":3.4,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472762","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

Process intensification of 2-amylanthraquinone hydrogenation in a micro-packed-bed reactor for H2O2 synthesis† 微填充床反应器中2-蒽醌加氢合成H2O2的工艺强化研究

IF 3.4 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-04-04 DOI: 10.1039/D5RE00079C

Junjie Wang, Lin Sheng, Qichen Shang, Jian Deng and Guangsheng Luo

{"title":"Process intensification of 2-amylanthraquinone hydrogenation in a micro-packed-bed reactor for H2O2 synthesis†","authors":"Junjie Wang, Lin Sheng, Qichen Shang, Jian Deng and Guangsheng Luo","doi":"10.1039/D5RE00079C","DOIUrl":"https://doi.org/10.1039/D5RE00079C","url":null,"abstract":"In the synthesis of hydrogen peroxide, the hydrogenation reaction in the Riedl–Pfleiderer process faces operational risks and inefficiency challenges. This work pioneers the application of micro-packed-bed reactors (μPBRs) in 2-amylanthraquinone (AAQ) hydrogenation, establishing a transformative strategy for enhancing the Riedl–Pfleiderer process. By utilizing microscale effects, we achieved a record space–time yield of 336.8 gH2O2 gPd−1 h−1 — 25× and 21× higher than those of conventional slurry reactors and trickle-bed reactors, respectively. For the first time, AAQ demonstrated superior performance over 2-ethylanthraquinone (EAQ) in μPBRs, addressing the critical challenge of balancing hydrogenation efficiency (10.13 g L−1) with 99.9% effective anthraquinone retention, which could not be achieved in prior systems. Additionally, systematic optimization of solvent composition (3 : 1 TMB/TOP), reaction parameters (50 °C, 300 kPa), and catalyst utilization revealed μPBRs' intrinsic advantages: ultra-short apparent residence time (9 s), minimized over-hydrogenation risk, and exceptional stability (99.1% effective anthraquinone retention after 10 cycles). Furthermore, a validated mass transfer model (prediction error <20%) was established for understanding the intrinsic mechanisms within gas–liquid–solid interactions, offering a predictive tool for reactor design. This study provides a safety-enhanced paradigm for H2O2 synthesis, overcoming long-standing limitations in industrial process intensification.","PeriodicalId":101,"journal":{"name":"Reaction Chemistry & Engineering","volume":" 7","pages":" 1473-1486"},"PeriodicalIF":3.4,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472747","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

A proposed industrial scale-up of circular bisphenol-A (BPA) production 提出了循环双酚A （BPA）生产的工业规模

IF 3.4 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-04-03 DOI: 10.1039/D5RE00047E

Aswin Nair, Megan Novak, Jonathan Ochoa, Dyron Powell, Josh Ramsey and Logan Stadtmueller

{"title":"A proposed industrial scale-up of circular bisphenol-A (BPA) production","authors":"Aswin Nair, Megan Novak, Jonathan Ochoa, Dyron Powell, Josh Ramsey and Logan Stadtmueller","doi":"10.1039/D5RE00047E","DOIUrl":"https://doi.org/10.1039/D5RE00047E","url":null,"abstract":"To meet the evolving sustainability goals of the modern-day chemical industry, there is a demand for novel chemical processes that minimize environmental impact while also maximizing profitability. This paper proposes a novel commercial solution for producing bisphenol-A (BPA) from the advanced recycling of polycarbonate waste. Current BPA production methods have major environmental and safety concerns from the use of benzene, high temperatures and pressures, and strong acids, and the proposed novel method addresses all these issues. This advanced recycling process utilizes a base-catalyzed methanolysis reaction with a methanol/toluene solvent mixture to produce BPA and dimethyl carbonate (DMC), a sustainable fuel additive both at 99.99 wt% purity. A prototype process was simulated in Aspen Plus®, and a preliminary process flow diagram was developed. With a target production capacity of 200 000 metric tons of BPA per annum, the major processing equipment is one packed-bed reactor, two crystallizers, and three distillation columns. All required heat exchangers and pumps were integrated into the simulation and can be adjusted based on product specifications and processing capacity. Analysis of green metrics for the novel process demonstrated that the process minimizes waste from a mass standpoint, and a rigorous economic analysis showed that the process is highly profitable in several varied scenarios.","PeriodicalId":101,"journal":{"name":"Reaction Chemistry & Engineering","volume":" 6","pages":" 1417-1428"},"PeriodicalIF":3.4,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/re/d5re00047e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148249","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

How the addition of a polar aprotic solvent alters aldol-addition kinetics: exploring the role of solvent molecules and their dynamics† 极性非质子溶剂的加入如何改变醛缩加成动力学：探索溶剂分子及其动力学的作用

IF 3.4 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-04-02 DOI: 10.1039/D5RE00054H

José Carlos Velasco Calderón and Samir H. Mushrif

{"title":"How the addition of a polar aprotic solvent alters aldol-addition kinetics: exploring the role of solvent molecules and their dynamics†","authors":"José Carlos Velasco Calderón and Samir H. Mushrif","doi":"10.1039/D5RE00054H","DOIUrl":"https://doi.org/10.1039/D5RE00054H","url":null,"abstract":"This paper investigates how solvent composition, and dynamics influence the aldol-addition reaction, which is an important reaction in acid-catalyzed biomass transformations. The reaction between 5-hydroxymethylfurfural (5-HMF) and 5,6-enol is used as a case-study since this is also a key step in the formation of humins (undesired carbonaceous polymers) in the condensed phase biomass transformation. Using first principles based molecular simulations performed at experimental conditions, with finite temperature effects, reaction dynamics and quantum mechanically treated explicit solvent molecules, we show that polar, aprotic cosolvents like DMSO can alter reaction pathways, conformations of reacting species, and energetics of the aldol addition reaction. Open-chain conformations of 5,6-enol are stable in water due to hydrogen bonding, while the presence of DMSO promotes quasi-cyclic structures. In both pure water and water–DMSO mixtures, the aldol addition reaction can proceed via both, concerted and stepwise pathways. Analysis of the reaction free energy landscape reveals that the aldol addition reaction is kinetically more favorable in water compared to water–DMSO mixtures, for both the concerted and stepwise pathways. Dynamic solvent reorganization during the reaction has a higher free energy penalty in DMSO than in pure water, highlighting the role of DMSO in increasing the activation free energy for aldol-addition. This investigation advances our understanding of explicit and dynamic solvent effects in condensed phase biomass transformation and particularly on the key aldol-addition reaction.","PeriodicalId":101,"journal":{"name":"Reaction Chemistry & Engineering","volume":" 7","pages":" 1517-1526"},"PeriodicalIF":3.4,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/re/d5re00054h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472751","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

Scalable phase-rich mixed oxide/perovskites: hetero-interfacial tuning catalysed photocatalysis via pH/temperature regulations† 可伸缩富相混合氧化物/钙钛矿：通过pH/温度调节的异界面调谐催化光催化

IF 3.4 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-04-02 DOI: 10.1039/D5RE00002E

Dharanya. C and Gnanaprakash Dharmalingam

{"title":"Scalable phase-rich mixed oxide/perovskites: hetero-interfacial tuning catalysed photocatalysis via pH/temperature regulations†","authors":"Dharanya. C and Gnanaprakash Dharmalingam","doi":"10.1039/D5RE00002E","DOIUrl":"https://doi.org/10.1039/D5RE00002E","url":null,"abstract":"The potential of nanotechnology can move beyond lab scales in one aspect by developing processes for scaling up. Here, the synthesis parameters and conditions for replicable mixed oxide/perovskites of titanium dioxide/strontium titanate (TiO2/SrTiO3) with multiple interfaces are demonstrated by adjusting solely the pH of the reaction mixture. Through defect chemistry validations, microscopy-derived nano-to-macro images, and lattice and crystalline structure characterizations, we demonstrate replicability. Aspects fundamental to the development of different phases have been proposed, such as lattice strains, shallow-level exclusive defects, and the presence of grain boundaries between specific phases. For the composite with the highest degree of mixed phase composition, the effects of reaction temperature and time have been investigated. Investigations on these composites for their performance in degradation of Rhodamine B have demonstrated how crucial the ratio of the phases is for catalytic activity. Realizing pristine SrTiO3 (STO) as well as STO/TiO2 mixtures without secondary phases like carbonates and possible protocols for achieving Magnéli phases have been demonstrated, making the various compositions intriguing candidates for applications that are concerned with defect and interface engineering that require scaled up protocols for synthesis.","PeriodicalId":101,"journal":{"name":"Reaction Chemistry & Engineering","volume":" 7","pages":" 1551-1568"},"PeriodicalIF":3.4,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472722","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

Synthesis of a spiroketone intermediate featuring a green and sustainable telescoped flow process† 绿色可持续伸缩流动工艺合成螺酮中间体

IF 3.4 3区化学

Reaction Chemistry & Engineering Pub Date : 2025-03-27 DOI: 10.1039/D4RE00631C

Shuoxun Wang, Hao Wu, Yongda Zhang and Frederic Buono

引用次数: 0