Research on Chemical Intermediates最新文献

{"title":"Study on the catalytic synthesis of 1,3-dioxolane using mesoporous aluminum phosphate","authors":"Yixiao Zhang,&nbsp;Jingwen Zhao,&nbsp;Xiujing Zou,&nbsp;Jingchen Wu,&nbsp;Xingfu Shang,&nbsp;Xueguang Wang","doi":"10.1007/s11164-026-06071-3","DOIUrl":"10.1007/s11164-026-06071-3","url":null,"abstract":"<div><p>A series of aluminum phosphate catalysts (<i>x</i>P-Al-O-<i>T)</i> with varying P/Al molar ratios and calcination temperatures were prepared via solvent evaporation self-assembly. The physicochemical properties of the prepared<i> x</i>P-Al-O-<i>T</i> catalysts were investigated using XRD, FTIR, Py-FTIR, nitrogen adsorption–desorption, and NH₃-TPD. Results indicate that the <i>x</i>P-Al-O-<i>T</i> samples exist in crystalline form, with a predominantly weak Lewis acid surface. The performance of the catalysts in the formaldehyde–glycol acetalization reaction for 1,3-dioxolane synthesis was investigated. The effects of P/Al molar ratio and calcination temperature on catalyst activity were examined. The effects of reaction temperature, reactant molar ratio, and space velocity on catalytic performance were systematically investigated. Under the optimized conditions—a P/Al molar ratio of 1.50, calcination temperature of 550 °C, reaction temperature of 150 °C, reactant molar ratio of 1.1, and space velocity of 1 mL g⁻¹ h⁻¹—the conversion of ethylene glycol reached 95.52%, with a selectivity of 99.50% toward 1,3-dioxolane. Moreover, during a 200-h stability test, the catalyst exhibited no significant loss in activity, and the selectivity for 1,3-dioxolane remained largely unchanged, indicating excellent long-term catalytic stability.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 9","pages":"6065 - 6083"},"PeriodicalIF":3.3,"publicationDate":"2026-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699676","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}

{"title":"Study on the catalytic oxidation performance of dimethylformamide over CuCeOx catalysts prepared by chemical vapor deposition","authors":"Xiaohong Gui,&nbsp;Jiaying Liu,&nbsp;Yunjia Zhang","doi":"10.1007/s11164-026-06069-x","DOIUrl":"10.1007/s11164-026-06069-x","url":null,"abstract":"<div><p>CuCeO_<i>x</i> composite catalysts for the catalytic conversion of dimethylformamide were prepared by controlling the amount of Cu using chemical vapor deposition, and the physical and chemical properties and catalytic performance of the CuCeO_<i>x</i> composite catalysts were characterized by X-ray diffraction analysis, scanning electron microscopy, and X-ray photoelectron spectroscopy. The results showed that Cu–Ce bimetallic oxide thin film increases the specific surface area, pore volume, and pore diameter of the CeO_<i>x</i> films. The Cu/Ce ratio can significantly affect the properties of the composite catalysts, such as activity, product selectivity, and stability, among which Cu50Ce50 shows the best overall performance in the catalytic reaction toward dimethylformamide.</p></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 9","pages":"6085 - 6103"},"PeriodicalIF":3.3,"publicationDate":"2026-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699712","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}

{"title":"Effect of support composition on acid properties and deactivation of Pt/WO3–Al2O3 catalysts for vegetable oil hydrodeoxygenation by different approaches of EPR spectroscopy","authors":"Vyacheslav L. Yurpalov,&nbsp;Aleksandr A. Nepomnyashchii,&nbsp;Aleksandr V. Lavrenov","doi":"10.1007/s11164-026-06070-4","DOIUrl":"10.1007/s11164-026-06070-4","url":null,"abstract":"<div><p>The effect of WO₃ modifier content (0–25 wt%) for a series of bifunctional Pt/WO₃–Al₂O₃ catalysts (0.5 wt% Pt) for the hydrodeoxygenation of vegetable oil on the concentration of acid sites and the tendency to deactivation was studied using classical and probe EPR methodologies, as well as thermal analysis. It was found that high Brønsted acid sites (BAS) concentration, determined by probe EPR with perylene molecules, promotes more intense side processes of carbon deposit formation with paramagnetic sites in the structure. A probable mechanism for the formation of EPR-detectable carbon sites through cracking, cyclization, condensation, and aromatization reactions involving carbocations is proposed. The possibility of oxidative regeneration of active BAS in catalysts with EPR monitoring is demonstrated.</p></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 9","pages":"6291 - 6308"},"PeriodicalIF":3.3,"publicationDate":"2026-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699720","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}

{"title":"Novel synthesis and functionalization of enaminone intermediate using bimetallic Pd-Cu anchored cellulose supported-MOF via heck coupling reaction","authors":"Khushboo Bhardwaj,&nbsp;Shivangi Jaiswal,&nbsp;Nisha Saini,&nbsp;Annu Bhardwaj,&nbsp;Archana Shau,&nbsp;Deepika Arora,&nbsp;Swapnil Sharma,&nbsp;Jaya Dwivedi","doi":"10.1007/s11164-026-06068-y","DOIUrl":"10.1007/s11164-026-06068-y","url":null,"abstract":"<div><p>The preparation of biologically active compounds, such as enaminones, has been continuously scrutinized in the search for the best catalyst to make the process greener, more efficient, and more sustainable. The present article discloses the fabrication of a bimetallic Pd-Cu-anchored cellulose-supported metal–organic framework i.e. RH-CNC@NH₂-BDC-Fe@Pd-Cu, where RH-CNC was derived from agrowaste rice husk. The formation of the catalyst was confirmed by various physicochemical characterizations using FTIR, Raman, FESEM, EDX, XRD, XPS, BET, and TGA, which indicate successful immobilization, structural integrity, and magnetic recoverability. The fabricated catalyst was used to synthesize enaminone derivatives from dimedone via a sequential one-pot Heck coupling reaction. The enaminone product <b>5a</b> was further explored for the synthesis of a bioactive azepinone framework. To assess the catalyst efficacy, the reaction was studied with a series of substrates, yielding excellent yields and remarkable catalytic cycles.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 9","pages":"6041 - 6063"},"PeriodicalIF":3.3,"publicationDate":"2026-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699582","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}

{"title":"Bio-inspired N-doped carbon quantum dots as sustainable nanomaterials for the detoxification of polycyclic musk compounds galaxolide and tonalide from aqueous systems","authors":"T. Krishna Sree,&nbsp;G. Sridevi","doi":"10.1007/s11164-026-06062-4","DOIUrl":"10.1007/s11164-026-06062-4","url":null,"abstract":"<div><p>The bio-inspired nitrogen-doped carbon quantum dots (N-CQDs) were synthesized through one-step hydrothermal conversion of <i>Moringa oleifera</i> seed husk. In this process, the seed husk serves as a carbon and nitrogen precursor. The EDX analysis of N-CQDs displaying a broad (002) diffraction band and weak (100) reflection confirms its quasi-graphitic nanostructure. The TEM analysis reveals the uniform dispersion of particles with an average diameter of 4.9 nm. The FT-IR and XPS analyses confirm the presence of abundant oxygen- and nitrogen-rich surface functional groups. Systematic optimization reveals that neutral pH (7), an adsorbent dose of 0.5 g/L, agitation at 150 rpm, and an initial analyte concentration of 100 μg/mL display the most efficient adsorption performance. In these optimized conditions, N-CQDs achieve high pollutant removal (&gt; 90% for both musks), with rapid initial uptake followed by equilibrium at 120 min. The kinetic evaluation demonstrates that adsorption of both Galaxolide and Tonalide followed pseudo-second-order kinetics. This confirms that the chemisorption driven by hydrogen bonding, π–π interactions, and heteroatom-mediated donor–acceptor effects was the main driving mechanism for the adsorption. The equilibrium modeling reveals the strong agreement with Freundlich isotherm behavior (R² &gt; 0.98), confirming the heterogeneous multilayer adsorption. The Langmuir fits provide high monolayer capacities (367 mg/g for Galaxolide and 243 mg/g for Tonalide). The N-CQDs also exhibited excellent reusability and retained 80–78% of their initial removal efficiency after five cycles. Compared to previously reported adsorbents, the N-CQDs produced in this study offer a green, metal-free, low-energy, and sustainable alternative with superior affinity and operational stability.</p></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 9","pages":"6329 - 6354"},"PeriodicalIF":3.3,"publicationDate":"2026-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699713","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}

{"title":"Upcycling spent LiCoO2 battery leachate into Co(OH)2 electrocatalysts for nitrate-to-ammonia conversion","authors":"Jingyun Liu,&nbsp;Yushan Chen,&nbsp;Jianxing Liang,&nbsp;Kan Li,&nbsp;Jinping Jia","doi":"10.1007/s11164-026-06066-0","DOIUrl":"10.1007/s11164-026-06066-0","url":null,"abstract":"<div><p>The ever-increasing accumulation of spent lithium-ion batteries and nitrate-contaminated wastewater poses serious environmental challenges. Herein, we report a waste-to-value strategy that directly uses the acid leaching solution of spent LiCoO₂ battery cathodes as a precursor to electrodeposit Co(OH)₂-based electrodes for electrochemical nitrate reduction to ammonia. The effects of coexisting cations (Li⁺, Al³⁺, and Cu²⁺) are systematically investigated. An optimal Li⁺ molar ratio of 50%, corresponding to the native Li⁺/Co²⁺ ratio in the leachate, yields a faradaic efficiency of 86% and an ammonia yield rate of 0.27 mmol cm⁻² h⁻¹. Compared with Na⁺ and K⁺, Li⁺ imparts superior activity due to specific structural modulation rather than solution conductivity. Trace Al³⁺ (~ 1%) induces severe agglomeration of the three-dimensional nanosheet-assembled spheres, lowering the yield rate, while a small amount of Cu²⁺ (~ 5%) promotes uniform dispersion, boosting the FE to 94% and the rate to 0.32 mmol cm⁻² h⁻¹. When both impurities coexist at their actual levels (~ 1% Al³⁺ and ~ 3% Cu²⁺), the detrimental effect of Al³⁺ is counteracted by Cu²⁺, leading to a well-dispersed morphology. The electrode prepared directly from the authentic leachate achieves an outstanding FE of 96%, 100% ammonia selectivity, and a rate of 0.30 mmol cm⁻² h⁻¹. This work provides a sustainable and cost-effective route for upcycling spent batteries into high-performance electrocatalysts for environmental nitrate remediation and ammonia synthesis.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 9","pages":"6561 - 6578"},"PeriodicalIF":3.3,"publicationDate":"2026-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699715","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}

{"title":"Regioselective ultrasound-promoted one-pot synthesis of thiazolo[3,2-a]pyrimidines using a recyclable Brønsted acid ionic liquid","authors":"Cong-Thang Duong,&nbsp;Tra Ngoc Duong,&nbsp;Anh Mai Thi Vu,&nbsp;Thao Hong Phan Nguyen,&nbsp;Thi Xuan Thi Luu","doi":"10.1007/s11164-026-06064-2","DOIUrl":"10.1007/s11164-026-06064-2","url":null,"abstract":"<p>Multi-component reactions (MCRs) play an important role in the one-step synthesis of complex molecular structures owing to their benefits. Herein, one-pot synthesis of thiazolo[3,2-<i>a</i>]pyrimidine derivatives via green and efficient multicomponent reaction of methyl ketones, 2-thioxopyrimidines, and <i>N</i>-bromosuccinimide (NBS), catalyzed by the Brønsted acid ionic liquid, [1-(4-sulfobutyl)-3-methylimidazolium hydrogen sulfate], under ultrasonic irradiation was reported. The protocol combines in situ α-bromination of ketones with subsequent Hantzsch-type annulation, enabling direct construction of the fused heterocyclic scaffold in a single step. A wide range of aromatic and cyclic ketones, as well as substituted 2-thioxopyrimidines, were chosen, affording the desired products in good yields under ultrasound irradiation. Importantly, the Brønsted-acid ionic-liquid catalyst used in this synthesis could be recovered and reused for four cycles without significant loss of efficiency. Moreover, density functional theory (DFT) calculations have been employed to elucidate the regioselectivity of the annulation process, revealing a clear thermodynamic preference for the formation of the 5<i>H</i>-isomer over the 7<i>H</i>-isomer. These computational results were fully consistent with the detailed NMR analyses (¹H, ¹³C, HMBC, and NOESY), confirming the 5<i>H</i>-thiazolo[3,2-<i>a</i>]pyrimidine structure.</p>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 9","pages":"6241 - 6263"},"PeriodicalIF":3.3,"publicationDate":"2026-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699703","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}

{"title":"Correction: NiFe2O4 nanoparticles: an efficient nanocatalyst for ultrasound assisted synthesis of pyrano[4,3-b]pyran derivatives","authors":"Sarfaraz Shaikh,&nbsp;Aksh Hina Shaikh,&nbsp;Kunika Champanerkar","doi":"10.1007/s11164-026-06057-1","DOIUrl":"10.1007/s11164-026-06057-1","url":null,"abstract":"","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 9","pages":"6671 - 6673"},"PeriodicalIF":3.3,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699716","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}

{"title":"Degradation of sulfamethoxazole by persulfate activated with heterogeneous catalyst MSBC-ZnFe2O4","authors":"Xinzhe Song,&nbsp;Bing Wang,&nbsp;En Shi,&nbsp;Tao Song,&nbsp;Jiyuan Li","doi":"10.1007/s11164-026-06063-3","DOIUrl":"10.1007/s11164-026-06063-3","url":null,"abstract":"<div><p>This study addresses the challenge of refractory degradation of sulfonamide antibiotic sulfamethoxazole (SMX) in aquatic environments. A novel heterogeneous catalyst, comprising Fe₃O₄ and ZnFe₂O₄ supported on municipal sludge-derived biochar (SBC) (denoted as MSBC-ZnFe₂O₄), was constructed for the degradation of sulfamethoxazole via heterogeneous activation of persulfate (PDS). Unlike conventional magnetic biochar or ferrite catalysts that typically rely on a single-component active phase, the uniquely designed Fe₃O₄/ZnFe₂O₄ heterojunction in this system synergistically accelerates the Fe²⁺/Fe³⁺ redox cycle through directional interfacial electron transfer, which is the key factor accounting for the markedly enhanced PDS activation and SMX degradation efficiency. Material characterization revealed that the high specific surface area and abundant functional groups of SBC effectively inhibited metal particle agglomeration and maintained magnetic separation performance. Response surface methodology (RSM) optimization demonstrated that under the conditions of catalyst dosage 1.70 g/L, PDS concentration 6.70 mmol/L, pH 5.10, and solution temperature 30.5 °C, the SMX degradation rate reached 92.87%. The catalyst retained 84.51% of its initial activity after five consecutive cycles, with the homogeneous degradation rate due to leached ions was below 13.25%. Radical quenching experiments,electron paramagnetic resonance (EPR) analysis and electrochemical chronoamperometry experiments demonstrated that sulfate radicals (SO₄^⁻·) and hydroxyl radicals (·OH) served as the primary reactive oxygen species, while the non-radical pathway involving singlet oxygen (¹O₂) also contributed synergistically to the degradation process. This research overcomes the technical bottlenecks of easy agglomeration and difficult recovery common in iron-based catalysts through sludge resource utilization and heterojunction catalytic design, providing an efficient, stable, and environmentally friendly advanced oxidation technology solution for antibiotic pollution control.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 9","pages":"6373 - 6410"},"PeriodicalIF":3.3,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699638","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}

{"title":"MOF-derived Cu electrode for electrocatalytic nitrate reduction and ammonia production","authors":"Feng Shi,&nbsp;Honglin Xu,&nbsp;Bin Wu,&nbsp;Jinguo Wang,&nbsp;Jianxing Liang,&nbsp;Jinping Jia","doi":"10.1007/s11164-026-06065-1","DOIUrl":"10.1007/s11164-026-06065-1","url":null,"abstract":"<div><p>Excessive nitrate accumulation disrupts the nitrogen cycle, posing hazards to both ecosystems and human health. Electrocatalytic nitrate reduction to ammonia (ERNA) achieves the synergistic recovery of pollutant removal and high-value ammonia resources. The preparation of highly efficient and stable electrode materials remains a challenge for improving conversion efficiency. Metal–organic frameworks (MOFs) are widely utilized in catalysis and related fields due to their advantages of tunable porosity, diverse structures, and large specific surface areas. In this study, MOF-derived Cu-D catalytic electrode was prepared by combining anodic oxidation and in situ reduction methods for application in nitrate reduction reactions. The effects of catalyst preparation parameters as well as current and initial pH on its electrocatalytic performance were investigated. The results indicate that the MOF-derived Cu electrode synthesized by in situ electrochemical method formed a dendritic structure, which enlarged the surface area, exposed more active sites, and thereby enhanced the surface charge transfer efficiency. After continuous reaction at a current density of 20 mA cm⁻² for 150 min, the Cu-D electrode achieved NO₃⁻ removal efficiency of 95.93% and NH₄⁺ selectivity of 89.66%, respectively. The catalyst also exhibits good stability and durability.</p></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 9","pages":"6025 - 6039"},"PeriodicalIF":3.3,"publicationDate":"2026-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699581","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}