Research on Chemical Intermediates最新文献

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Highly efficient transfer hydrogenation of methyl levulinate over pH-tuned Zr(OH)4 catalysts ph调Zr(OH)4催化剂上乙酰丙酸甲酯的高效转移加氢反应
IF 3.5 3区 化学
Research on Chemical Intermediates Pub Date : 2026-03-18 DOI: 10.1007/s11164-026-05970-9
Wenwei Hu, Yuman Li, Xuanyan Liu, Yuanyuan She, Xiantao Tan, Tianyu Sun, Jing Zhang, Dabo Jiang, Jiao Zhou, Qiangbin Yang
{"title":"Highly efficient transfer hydrogenation of methyl levulinate over pH-tuned Zr(OH)4 catalysts","authors":"Wenwei Hu,&nbsp;Yuman Li,&nbsp;Xuanyan Liu,&nbsp;Yuanyuan She,&nbsp;Xiantao Tan,&nbsp;Tianyu Sun,&nbsp;Jing Zhang,&nbsp;Dabo Jiang,&nbsp;Jiao Zhou,&nbsp;Qiangbin Yang","doi":"10.1007/s11164-026-05970-9","DOIUrl":"10.1007/s11164-026-05970-9","url":null,"abstract":"<div><p>γ-Valerolactone (GVL) is a key biomass-derived platform molecule with versatile applications in sustainable fuels and green solvents. In this study, a series of Zr(OH)<sub>4</sub> catalysts were prepared via pH-controlled precipitation and tested in the catalytic transfer hydrogenation of methyl levulinate (ML) using isopropanol (IPA) as a hydrogen donor. The catalyst prepared at pH = 4 exhibited the highest GVL yield (99.3%) and selectivity (97.6%) under relatively mild reaction conditions (180 °C, 4 h). Spectroscopic and structural analyses revealed that the superior catalytic performance can be attributed to the presence of a partially crystallized tetragonal phase and a high density of Lewis acid sites (~ 248 μmol·g<sup>−1</sup>). Furthermore, it could also be recovered easily and used repeatedly at least 8 times without an obvious decrease in activity. Mechanistic studies support that the reaction proceeds via a Meerwein–Ponndorf–Verley (MPV) pathway involving a six-membered ring transition state. This work highlights the potential of non-noble metal Zr-based hydroxides as efficient and scalable catalysts for biomass valorization.</p></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 5","pages":"3161 - 3180"},"PeriodicalIF":3.5,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686637","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
Concentrated solar light-driven rapid and neat synthesis of quinazolines: a greener, sustainable, and an efficient approach 聚光太阳能驱动快速整齐合成喹唑啉:一种更环保、可持续、高效的方法
IF 3.5 3区 化学
Research on Chemical Intermediates Pub Date : 2026-03-17 DOI: 10.1007/s11164-026-05961-w
Gobind Kumar, Sarthak Sharma,  Archna, Garima Sharma, Gaurav Bhargava, Jaspreet Kaur Rajput, Baljinder Singh, Rupesh Kumar
{"title":"Concentrated solar light-driven rapid and neat synthesis of quinazolines: a greener, sustainable, and an efficient approach","authors":"Gobind Kumar,&nbsp;Sarthak Sharma,&nbsp; Archna,&nbsp;Garima Sharma,&nbsp;Gaurav Bhargava,&nbsp;Jaspreet Kaur Rajput,&nbsp;Baljinder Singh,&nbsp;Rupesh Kumar","doi":"10.1007/s11164-026-05961-w","DOIUrl":"10.1007/s11164-026-05961-w","url":null,"abstract":"<div><p>A straightforward, eco-friendly, and sustainable methodology has been developed for the synthesis of 2,3-dihydroquinazoline scaffolds via cyclization of 2-aminobenzamide with aldehyde under Concentrated Solar Light Radiation (CSR). Remarkably, this approach eliminates the use of catalyst as well as solvent. The study highlights the viability of employing readily available and renewable concentrated solar light as a green energy source, facilitate the synthesis of 2,3-dihydroquinazoline derivatives with high to excellent (90–98%) yields. Beyond its operational simplicity, the method dispenses with tedious purification steps and demonstrates scalability up to gram quantities. Assessment of green chemistry metrics confirmed the environmental merits of the process, highlighting its reduced energy and alignment with the principles of atom economy and energy efficiency. Remarkably, this work highlights the transformative potential of CSR as a clean, accessible, and practical energy input for organic synthesis, particularly in the development of heterocyclic scaffolds of pharmaceutical importance.</p></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 5","pages":"3431 - 3446"},"PeriodicalIF":3.5,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686585","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
Modulating the surface composition of CuZnOx catalysts via doping Al for catalyzing CO2 hydrogenation reaction 掺杂Al调控CuZnOx催化剂表面组成催化CO2加氢反应
IF 3.5 3区 化学
Research on Chemical Intermediates Pub Date : 2026-03-17 DOI: 10.1007/s11164-026-05971-8
Jiajun Wang, Yuanyuan Miao, Peng Wang, Xiaoxia Tao, Fan Bo, Yunzhao Xu, Lingling Zhao, Caihang Zhang, Yang Chen, Li Tan, Noritatsu Tsubaki
{"title":"Modulating the surface composition of CuZnOx catalysts via doping Al for catalyzing CO2 hydrogenation reaction","authors":"Jiajun Wang,&nbsp;Yuanyuan Miao,&nbsp;Peng Wang,&nbsp;Xiaoxia Tao,&nbsp;Fan Bo,&nbsp;Yunzhao Xu,&nbsp;Lingling Zhao,&nbsp;Caihang Zhang,&nbsp;Yang Chen,&nbsp;Li Tan,&nbsp;Noritatsu Tsubaki","doi":"10.1007/s11164-026-05971-8","DOIUrl":"10.1007/s11164-026-05971-8","url":null,"abstract":"<div><p>For the industrially promising reaction of CO<sub>2</sub> hydrogenation toward methanol, Cu/Zn/Al-based catalysts present a potential candidate, where the surface active structure dictates the catalytic performance, guiding ongoing research into structure–activity relationships. Herein, a series of CuZn<sub><i>x</i></sub>Al<sub><i>y</i></sub> (where the mol ratio of Zn/Cu = <i>x</i>, mol ratio of Al/Cu = <i>y</i>) catalysts with varying compositions was synthesized via a coprecipitation method. Physicochemical characterization revealed that a small amount of Al (CuZn<sub>0.56</sub>Al<sub>0.04</sub>) enhanced the specific surface area, improved the dispersion of Cu and Zn species, and optimized the Cu<sup>+</sup>/Cu<sup>0</sup> ratio, as evidenced by N<sub>2</sub> physisorption, XRD, and XPS analyses. In contrast, excessive Al content (CuZn<sub>0.23</sub>Al<sub>0.83</sub>) led to a decline in surface area, pore volume, and surface exposure of active Cu and Zn species. Catalytic performance tests showed that CuZn<sub>0.56</sub>Al<sub>0.04</sub> achieved the highest CO<sub>2</sub> conversion (16.2%), methanol selectivity (56.3%), and methanol space–time yield (STY) (438 <i>g</i><sub>MeOH</sub> kg<sub>cat</sub><sup>−1</sup> h<sup>−1</sup>), outperforming that of the commercial CuZnAl catalyst. In situ DRIFTS studies confirmed that methanol synthesis proceeded via a formate (HCOO) mediated pathway, with the optimal catalyst demonstrating superior efficiency in converting key intermediates (HCO<sub>3</sub>*, CO<sub>3</sub>*, HCOO*) to the final product. The study establishes that tailored Al content is crucial for modulating catalyst surface properties and ultimately promoting catalytic performance for methanol synthesis from CO<sub>2</sub>.</p><h3>Graphical abstract</h3><p>An optimal Al content in co-precipitated CuZn<sub><i>x</i></sub>Al<sub><i>y</i></sub> catalysts optimizes the surface active structure, enabling efficient CO<sub>2</sub>-to-methanol hydrogenation via the formate pathway.</p>\u0000<div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 5","pages":"3181 - 3199"},"PeriodicalIF":3.5,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686638","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: Phasing chromism in poly-N-isopropylacrylamide gel analyzed using Förster energy transfer phenomena 更正:用Förster能量转移现象分析聚n -异丙基丙烯酰胺凝胶中的相色差
IF 3.5 3区 化学
Research on Chemical Intermediates Pub Date : 2026-03-16 DOI: 10.1007/s11164-026-05976-3
Atom Hamasaki, Kahori Kashima, Yuka Takeuchi, Sumio Ozeki, Akio Katsuki
{"title":"Correction: Phasing chromism in poly-N-isopropylacrylamide gel analyzed using Förster energy transfer phenomena","authors":"Atom Hamasaki,&nbsp;Kahori Kashima,&nbsp;Yuka Takeuchi,&nbsp;Sumio Ozeki,&nbsp;Akio Katsuki","doi":"10.1007/s11164-026-05976-3","DOIUrl":"10.1007/s11164-026-05976-3","url":null,"abstract":"","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 4","pages":"2805 - 2807"},"PeriodicalIF":3.5,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11164-026-05976-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147559682","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
Designing and characterization of dual-functional g-C3N4/Fe2O3 heterostructure for the enhanced photocatalytic removal of 4-nitrophenol and hydrogen generation 双官能团g-C3N4/Fe2O3异质结构的设计与表征
IF 3.5 3区 化学
Research on Chemical Intermediates Pub Date : 2026-03-13 DOI: 10.1007/s11164-026-05967-4
Sofia Mateen, Muhammad Tariq Qamar, Ali Bahadur, Shahid Iqbal
{"title":"Designing and characterization of dual-functional g-C3N4/Fe2O3 heterostructure for the enhanced photocatalytic removal of 4-nitrophenol and hydrogen generation","authors":"Sofia Mateen,&nbsp;Muhammad Tariq Qamar,&nbsp;Ali Bahadur,&nbsp;Shahid Iqbal","doi":"10.1007/s11164-026-05967-4","DOIUrl":"10.1007/s11164-026-05967-4","url":null,"abstract":"<div><p>The potential uses of heterogeneous photocatalysts in photocatalytic water splitting for H<sub>2</sub> production and the breakdown of organic pollutants in wastewater have attracted a lot of attention. In this work, we present the wet impregnation construction of a g-C<sub>3</sub>N<sub>4</sub>/Fe<sub>2</sub>O<sub>3</sub> heterostructure. The successful heterostructure formation was confirmed by XRD analysis and TEM, indicating rhombohedral phases of Fe<sub>2</sub>O<sub>3</sub> interfaced with g-C<sub>3</sub>N<sub>4</sub>. The shifting of Fe 2p and O 1s core levels to lower binding energies in comparison with pristine Fe<sub>2</sub>O<sub>3</sub> also confirmed the heterostructure formation. UV–visible absorption spectra showed improved light absorption for g-C<sub>3</sub>N<sub>4</sub>/Fe<sub>2</sub>O<sub>3</sub> relative to pure Fe<sub>2</sub>O<sub>3</sub>. Photocatalytic studies showed that under natural sunlight, g-C<sub>3</sub>N<sub>4</sub>/Fe<sub>2</sub>O<sub>3</sub> achieved ~ 85% removal of 20 ppm 4-nitrophenol (4-NP) at a rate of 1.5 × 10<sup>–3</sup> min⁻<sup>1</sup>, while Fe<sub>2</sub>O<sub>3</sub> achieved ~ 40% removal at 4.4 × 10⁻<sup>3</sup> min⁻<sup>1</sup>. Under artificial light illumination, the heterostructure degraded ~ 80% of 4-NP, compared to ~ 25% degradation by Fe<sub>2</sub>O<sub>3.</sub> Kinetic studies revealed that the photodegradation of 4-NP under natural sunlight by these photocatalysts followed the Langmuir–Hinshelwood model. Reactive oxygen species (ROS) scavenging experiments validated that superoxide anion radicals (O<sub>2</sub><sup>−•</sup>) were the predominant species responsible for 4-NP degradation, with a minor contribution from hydroxyl radicals (<sup>•</sup>OH). In addition, the g-C<sub>3</sub>N<sub>4</sub>/Fe<sub>2</sub>O<sub>3</sub> heterostructure displayed higher photocatalytic hydrogen evolution (~ 60 mmol g⁻<sup>1</sup>), which surpassed both individual g-C<sub>3</sub>N<sub>4</sub> and Fe<sub>2</sub>O<sub>3</sub>. These results demonstrate the effective dual utility of g-C<sub>3</sub>N<sub>4</sub>/Fe<sub>2</sub>O<sub>3</sub> for both wastewater treatment and green hydrogen production.</p></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 5","pages":"3447 - 3471"},"PeriodicalIF":3.5,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686629","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
Bi2MoO6/g-C3N4 nanocomposites with improved charge separation for effective food dye degradation under visible light 改进电荷分离的Bi2MoO6/g-C3N4纳米复合材料在可见光下有效降解食用染料
IF 3.5 3区 化学
Research on Chemical Intermediates Pub Date : 2026-03-11 DOI: 10.1007/s11164-026-05968-3
Silpa Sunil, Srinivasan Latha, Badal Kumar Mandal
{"title":"Bi2MoO6/g-C3N4 nanocomposites with improved charge separation for effective food dye degradation under visible light","authors":"Silpa Sunil,&nbsp;Srinivasan Latha,&nbsp;Badal Kumar Mandal","doi":"10.1007/s11164-026-05968-3","DOIUrl":"10.1007/s11164-026-05968-3","url":null,"abstract":"<div><p>Heterostructure nanocomposites of Bi<sub>2</sub>MoO<sub>6</sub>/g-C<sub>3</sub>N<sub>4</sub> (BMG) were synthesized via a precisely regulated hydrothermal process to improve the visible-light-driven degradation of persistent food dyes, specifically Carmoisine (CM) and Indigo Carmine (IC). The successful fabrication of the heterojunction was confirmed by thorough analysis using XRD, FT-IR, XPS, BET, UV–Vis DRS, PL, FE-SEM, TEM, and EDX, which also showed notable changes in surface, structural, and optical properties. According to photocurrent response and EIS analyses, the development of a close interface between Bi<sub>2</sub>MoO<sub>6</sub> (BM) and exfoliated g-C<sub>3</sub>N<sub>4</sub> (GCN) promoted effective charge separation and significantly decreased recombination occurrences. The primary reactive oxygen species in charge of the photodegradation process were determined to be <sup>•</sup>OH and <sup>•</sup>O<sub>2</sub>⁻ by radical scavenging studies and EPR measurements. By adjusting the variation in pH, dye concentration, catalyst dosage, and light intensity, the BMG (7 wt%) composite showed significantly greater rates of degradation than pristine BM and bare GCN, indicating enhanced photocatalytic performance. A more effective interfacial charge-transfer channel, increased accessible surface area, and improved visible-light absorption all work together to produce the increased catalytic activity. These results demonstrate the potential of BMG heterojunctions as strong and effective visible-light photocatalysts, offering a practical and environmentally friendly approach for removing dye contaminants from wastewater.</p></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 5","pages":"3473 - 3500"},"PeriodicalIF":3.5,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686630","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
Novel core–shell NiO@CuFeO2 and NiO@CuFe2O4 nanocatalysts prepared via ultrasound-microwave with high-performance in dry reforming of methane 新型核壳纳米催化剂NiO@CuFeO2和NiO@CuFe2O4在甲烷干重整中的应用
IF 3.5 3区 化学
Research on Chemical Intermediates Pub Date : 2026-03-11 DOI: 10.1007/s11164-026-05963-8
Noura Touahri, Amel Benadda-kordjani, Fouzia Touahra, Djahida Lerari, Redouane Chebout, Juan Pedro Holgado, Kheldoun Bachari
{"title":"Novel core–shell NiO@CuFeO2 and NiO@CuFe2O4 nanocatalysts prepared via ultrasound-microwave with high-performance in dry reforming of methane","authors":"Noura Touahri,&nbsp;Amel Benadda-kordjani,&nbsp;Fouzia Touahra,&nbsp;Djahida Lerari,&nbsp;Redouane Chebout,&nbsp;Juan Pedro Holgado,&nbsp;Kheldoun Bachari","doi":"10.1007/s11164-026-05963-8","DOIUrl":"10.1007/s11164-026-05963-8","url":null,"abstract":"<div><p>Copper-iron mixed oxides with different Fe/Cu molar ratios, along with NiO, NiO@CuFe<sub>2</sub>O<sub>4</sub>, and NiO@CuFeO<sub>2</sub> nanocatalysts, were synthesized via hydrothermal treatment assisted by ultrasonic and microwave irradiation. Comprehensive characterization using XRF, N<sub>2</sub> physisorption, XRD, FTIR, H<sub>2</sub>-TPR, TGA, and TEM-EDS confirmed the formation of mesoporous materials and well-defined core–shell architectures, consisting of Ni-rich cores encapsulated by CuFe oxide shells. TEM analysis revealed average shell thicknesses of approximately 22 nm for NiO@CuFe<sub>2</sub>O<sub>4</sub> and 15 nm for NiO@CuFeO<sub>2</sub>. The catalytic performance in the dry reforming of methane (CH<sub>4</sub>/CO<sub>2</sub> = 1, atmospheric pressure) showed that bare NiO, although initially highly active, underwent rapid deactivation due to sintering and severe carbon deposition. In contrast, post-reaction analyses demonstrated negligible carbon formation on the NiO@CuFe<sub>2</sub>O<sub>4</sub> and NiO@CuFeO<sub>2</sub> catalysts. XRD analysis after reduction evidenced the formation of a Ni-Cu alloy, which modulates the electronic structure and catalytic behavior of Ni. The presence of the Ni-Cu alloy suppresses carbon deposition by reducing the intrinsic tendency of Ni to promote methane cracking, while simultaneously preventing the reoxidation of metallic Ni into inactive NiO species under DRM conditions. Consequently, the strong synergistic interaction between Ni and Cu enhances structural stability, preserves high catalytic activity, and provides excellent resistance to coking.</p></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 5","pages":"3087 - 3110"},"PeriodicalIF":3.5,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686609","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
Catalytic hydrogenation of 2,4-dinitrotoluene to 2,4-toluenediamine using isopropanol as hydrogen source 以异丙醇为氢源催化2,4-二硝基甲苯加氢制2,4-甲苯二胺
IF 3.5 3区 化学
Research on Chemical Intermediates Pub Date : 2026-03-06 DOI: 10.1007/s11164-026-05962-9
Bohui Li, Wei Liu, Yucong Song, Xiaoshu Ding, Yanji Wang
{"title":"Catalytic hydrogenation of 2,4-dinitrotoluene to 2,4-toluenediamine using isopropanol as hydrogen source","authors":"Bohui Li,&nbsp;Wei Liu,&nbsp;Yucong Song,&nbsp;Xiaoshu Ding,&nbsp;Yanji Wang","doi":"10.1007/s11164-026-05962-9","DOIUrl":"10.1007/s11164-026-05962-9","url":null,"abstract":"<div><p>2,4-Toluenediamine (TDA) is an important raw material in the polyurethane industry. The current industrial production method involves a gas–liquid–solid three-phase catalytic reaction process that utilizes hydrogen directly, presenting challenges such as high safety risks and non-uniform mixing of reactants. Therefore, this paper proposes and investigates an intrinsically safe liquid–solid phase approach for the catalytic hydrogenation of 2,4-dinitrotoluene (DNT) to TDA using isopropanol as the hydrogen source. To screen out an efficient bimetallic catalyst formulation, we systematically regulated the loadings of Ru and Pt, and a highly efficient bimetallic Ru-Pt/AC catalyst exhibiting both dehydrogenation and hydrogenation functionalities was successfully prepared. Under atmospheric pressure and a reaction temperature of 135 °C, with the mass ratio of catalyst, isopropanol, and water to DNT being 0.6, 47, and 35, respectively, and a reaction time of 3h, the yield of TDA reached 99.2%. The isopropanol dehydrogenation rate of the catalyst is the key to the entire reaction process; water can activate the nitro group through hydrogen bonds and thereby promote the hydrogenation reaction. The Ru species on the surface of the Ru-Pt/AC bimetallic catalyst are present in the metallic state, whereas Pt exists in both the Pt<sup>0</sup> and Pt<sup>2+</sup> oxidation states. The metal particle size is approximately 2 nm. This reaction offers a safe and efficient green alternative for the production of materials used in the polyurethane industry.</p></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 5","pages":"3149 - 3160"},"PeriodicalIF":3.5,"publicationDate":"2026-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686636","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
Screening of some aromatic and aliphatic ketones towards synthesis of their dimethyl ketals using graphene oxide as carbo-catalyst 以氧化石墨烯为碳催化剂,筛选芳香族和脂肪族酮合成二甲基酮
IF 3.5 3区 化学
Research on Chemical Intermediates Pub Date : 2026-03-05 DOI: 10.1007/s11164-026-05957-6
Nitin D. Patil, Nilesh S. Patil, Harish R. Talele
{"title":"Screening of some aromatic and aliphatic ketones towards synthesis of their dimethyl ketals using graphene oxide as carbo-catalyst","authors":"Nitin D. Patil,&nbsp;Nilesh S. Patil,&nbsp;Harish R. Talele","doi":"10.1007/s11164-026-05957-6","DOIUrl":"10.1007/s11164-026-05957-6","url":null,"abstract":"<div><p>The ketalization of aliphatic and selected aromatic ketones has been investigated using graphene oxide (GO) as an efficient carbo-catalyst. The transformation of acetophenone derivatives and various aliphatic ketones was carried out at 25–30 °C using trimethyl orthoformate, which served both as a methanol source and an effective water scavenger. Under these mild conditions, the method afforded ketals in excellent yields, reaching up to 98%. A broad range of ketone substrates—including aromatic, aliphatic, unsaturated cyclic ketones were successfully converted, demonstrating the versatility of the catalytic system. The synthesized GO catalyst was thoroughly characterized using FTIR, XRD, EDX, Raman spectroscopy, XPS, and FE-SEM analyses. Importantly, the catalyst could be recovered and reused for up to five reaction cycles without significant loss of activity, consistently providing excellent yields. The use of graphene oxide as a catalyst offers several advantages over conventional sulfonated catalysts, including milder reaction conditions, reduced corrosiveness, enhanced recyclability, and improved environmental compatibility.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"52 5","pages":"2961 - 2983"},"PeriodicalIF":3.5,"publicationDate":"2026-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686590","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
SCR denitration performance and mechanism of magnetic separation rare earth tailings activated by Mn combined with NaOH alkaline fusion 锰-氢氧化钠碱熔活化磁选稀土尾矿的SCR脱硝性能及机理
IF 3.5 3区 化学
Research on Chemical Intermediates Pub Date : 2026-03-05 DOI: 10.1007/s11164-026-05965-6
Junmao Qie, Mengfei Cao, Jiaqi Zong, Jian Chang, Shuqi Zhang, Tong Xu
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