Catalysis Letters最新文献_第5页

M-BTC as Efficient Catalyst for the Synthesis of Cyclic Organic Carbonates Assisted Tandem by Olefin Epoxidation and CO2 Cycloaddition M-BTC 作为高效催化剂通过烯烃环氧化和 CO2 环加成串联合成环状有机碳酸盐

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-11-27 DOI: 10.1007/s10562-024-04881-x

Ruiping Wei, Ziqi Wang, Mingzhu Yao, Rongying Xia, Huijun Liu, Lei Yang, Guanghui Ma, Lijing Gao, Guomin Xiao

{"title":"M-BTC as Efficient Catalyst for the Synthesis of Cyclic Organic Carbonates Assisted Tandem by Olefin Epoxidation and CO2 Cycloaddition","authors":"Ruiping Wei, Ziqi Wang, Mingzhu Yao, Rongying Xia, Huijun Liu, Lei Yang, Guanghui Ma, Lijing Gao, Guomin Xiao","doi":"10.1007/s10562-024-04881-x","DOIUrl":"10.1007/s10562-024-04881-x","url":null,"abstract":"<div><p>The metal-organic frameworks (MOFs) with oxidative and acidic active sites demonstrate promising potential for tandem reactions involving olefin oxidation carboxylation. In this study, M-BTCs were synthesized via a solvothermal method, employing 1,3,5-benzenetricarboxylic acid (H<sub>3</sub>BTC) as a ligand in combination with various metals (Mn, Co, Cu, Ni). The good thermal stability and morphology of M-BTC was verified by various characterization techniques, and its catalytic performance was evaluated for oxidative carboxylation. The catalytic activity of Mn-BTC, with Mn<sup>3+</sup>/ Mn<sup>2+</sup>as the primary oxidation site, was found to be superior in both olefin epoxidation and CO<sub>2</sub> cycloaddition. The effects of reaction conditions on both epoxidation of styrene and the cycloaddition reaction were investigated, respectively. Under optimal reaction conditions (epoxidation: 10 wt% Mn-BTC of styrene, 80 ℃ for 12 h; cycloaddition: 100 ℃ for 12 h with a CO<sub>2</sub> flow rate of 15 ml/min and tetrabutylammonium bromide (TBAB) amount of 15 mol%), a 53% yield of styrene carbonate (SC) was obtained in the assisted tandem reactions. Furthermore, cycling experiments as well as XRD and FT-IR spectra of the catalysts after use demonstrated that Mn-BTC maintained its crystal structure and retained a yield of 49% SC after three cycles. Finally, a possible mechanism for assisted tandem catalytic reaction over Mn-BTC was proposed.</p><h3>Graphic Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10562-024-04881-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Alkali Metal Doped MnOx Catalysts for Formaldehyde Oxidation 用于甲醛氧化的碱金属掺杂氧化锰催化剂

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-11-26 DOI: 10.1007/s10562-024-04890-w

Hailin Zhao, Hao Liu, Yenan Liu, Xiutang Chu

{"title":"Alkali Metal Doped MnOx Catalysts for Formaldehyde Oxidation","authors":"Hailin Zhao, Hao Liu, Yenan Liu, Xiutang Chu","doi":"10.1007/s10562-024-04890-w","DOIUrl":"10.1007/s10562-024-04890-w","url":null,"abstract":"<div><p>The catalytic oxidation of formaldehyde to CO<sub>2</sub> and H<sub>2</sub>O under low temperature is of great significance and insistent demand for indoor air purification. In this work, through alkali metal doping, we significantly improved the formaldehyde oxidation activity of Mn-based catalysts. At a temperature as low as 97 °C, 300 ppm of formaldehyde can be completely eliminated over 5%Cs/MnO<sub><i>x</i></sub>. The results showed that the presence of alkali metals markedly increased the redox ability of MnO<sub><i>x</i></sub> catalyst and the proportion of reactive oxygen species. The adsorption and reaction path of formaldehyde on the surface of the catalysts were studied by in-situ infrared spectroscopy. It was found that the adsorption form of formaldehyde on the surface of alkali metals doped MnO<sub><i>x</i></sub> catalyst was different from that of MnO<sub><i>x</i></sub>, except for monodentate formate detected over MnO<sub><i>x</i></sub>, more easily decomposed bridged adsorbed formate was another prominent adsorbed species over 5%Na/MnO<sub><i>x</i></sub> and 5%Cs/MnO<sub><i>x</i></sub> catalysts. The difference in reaction paths may be the key to the higher activities of alkali doped MnO<sub><i>x</i></sub> catalysts. This finding may provide some new ideas for the design of low temperature formaldehyde oxidation catalysts.</p><h3>Graphical Abstract</h3><p>The intermediate species during formaldehyde oxidation on MnO<sub><i>x</i></sub> and Na<sup>+</sup>/Cs<sup>+</sup>-doped MnO<sub><i>x</i></sub> are different, which may be the key reason why the latter exhibit higher activities than MnO<sub><i>x</i></sub>.</p>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

The High-Temperature Performance of Pt/Ba/CoxMg1-xAl2O4 Catalysts for Lean-Burn NOx Removal 用于稀薄燃烧氮氧化物脱除的 Pt/Ba/CoxMg1-xAl2O4 催化剂的高温性能

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-11-25 DOI: 10.1007/s10562-024-04852-2

Benxiong Hu, Tao Yang, You Peng, Fushan Chen, Dongsheng Liu

{"title":"The High-Temperature Performance of Pt/Ba/CoxMg1-xAl2O4 Catalysts for Lean-Burn NOx Removal","authors":"Benxiong Hu, Tao Yang, You Peng, Fushan Chen, Dongsheng Liu","doi":"10.1007/s10562-024-04852-2","DOIUrl":"10.1007/s10562-024-04852-2","url":null,"abstract":"<div><p>A series of catalysts Pt/Ba/Co<sub><i>x</i></sub>Mg<sub>1-<i>x</i></sub>Al<sub>2</sub>O<sub>4</sub> supported by cobalt doped hydrotalcite materials were prepared by coprecipitation-impregnation method for NO<sub><i>x</i></sub> removal at 250–500 °C. The techniques of XRD, TEM, XPS, BET, H<sub>2</sub>-TPR, NO<sub><i>x</i></sub>-TPD, and FT-IR were employed to study the structure and properties of the catalysts. After Co doping, the specific surface area of the catalyst is significantly increased, while the number of surface reactive oxygen species is increased, making NO more easily oxidized to NO<sub>2</sub>, which is conducive to NO<sub><i>x</i></sub> storage. Meanwhile, XRD and TEM results show that Co doping also promotes the dispersion of BaCO<sub>3</sub>, which is the NO<sub><i>x</i></sub> storage site. In addition, the results of TEM and XPS before and after high temperature reaction showed that the active center Pt maintained good dispersion, no obvious sintering occurred, and the valence state of Co remained unchanged. The above characterization results show that the addition of Co significantly improves the storage capacity and thermal stability of the storage intermediates in the catalyst, that is, enhances the elimination performance of lean burn NO<sub><i>x</i></sub> at high temperatures. Co-doped catalysts Pt/Ba/Co<sub><i>x</i></sub>Mg<sub>1-<i>x</i></sub>Al<sub>2</sub>O<sub>4</sub> (<i>x</i> = 0.1, 0.3 and 0.5) showed better high-temperature activity than Pt/Ba/MgAl<sub>2</sub>O<sub>4</sub>. Pt/Ba/Co<sub>0.3</sub>Mg<sub>0.7</sub>Al<sub>2</sub>O<sub>4</sub> showed the highest De-NO<sub><i>x</i></sub> efficiency of 93.2% at 400 ºC and 88.7% at 450 ºC, respectively.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Fabrication of Periodically Ordered MnO2 Arrays Decorated with Au Nanoparticles for Interference Enhanced SPR-Mediated Visible-Light Responsive Photocatalysis 用金纳米粒子装饰的周期有序二氧化锰阵列的制备，用于干扰增强型 SPR 介导的可见光响应光催化技术

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-11-25 DOI: 10.1007/s10562-024-04886-6

Jiale Wang, Jie Deng, Han Liu, Guowei Deng, Jiaxing Li, Zhihao Chai, Xiaoyun Liu, Gang Yang

{"title":"Fabrication of Periodically Ordered MnO2 Arrays Decorated with Au Nanoparticles for Interference Enhanced SPR-Mediated Visible-Light Responsive Photocatalysis","authors":"Jiale Wang, Jie Deng, Han Liu, Guowei Deng, Jiaxing Li, Zhihao Chai, Xiaoyun Liu, Gang Yang","doi":"10.1007/s10562-024-04886-6","DOIUrl":"10.1007/s10562-024-04886-6","url":null,"abstract":"<div><p>Periodically ordered δ-MnO<sub>2</sub> arrays were fabricated by polystyrene (PS) nanosphere lithography combined with following hydrothermal synthesis. The periodicity of δ-MnO<sub>2</sub> arrays was varied by choosing PS nanospheres of different diameters. Then Au nanoparticles (NPs) were deposited on the δ-MnO<sub>2</sub> units to form Au-MnO<sub>2</sub> arrays samples. The PATP-to-DMAB model reaction was applied to detect the influence of MnO<sub>2</sub> units periodicity on surface plasmon resonance (SPR)-mediated photocatalytic performance of Au-MnO<sub>2</sub> arrays samples under 633 nm irradiation. The photocatalytic performance on the Au-MnO<sub>2</sub> array sample of 500 nm period presented ~ 16% superior photocatalytic activities relative to that of Au-MnO<sub>2</sub> array sample of 800 nm period. The surface plasmon polaritons (SPP) of plasmonic NPs can change the propagation path of incident light to vertical direction after scattering on them. The Au-MnO<sub>2</sub> array sample of 500 nm period possessed the distance between neighbor MnO<sub>2</sub> units smaller than the wavelength of irradiation light, and thus the scattered light interfered with each other after the incident light was scattered by the Au NPs on the neighbor MnO<sub>2</sub> units. Then the electric field (E-field) intensities near Au NPs were elevated due to the interference effect. Since the SPR-mediated photocatalytic activity is proportional to the square value of local E-field intensity (E<sup>2</sup>), thus the photocatalytic activities on Au NPs were enhanced. Therefore, our finding may provide a novel avenue to design SPR-enhanced photocatalysts by the deposition of plasmonic metals on periodically ordered arrays.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Ni/rGO: An Efficient Heterogeneous Catalytic System for Carbonylative Suzuki Coupling and Alkoxy Carbonylation Reactions with Co2(CO)8 as a Solid C1 Source Ni/rGO：以 Co2(CO)8 为固体 C1 源进行羰基化铃木偶联和烷氧基羰基化反应的高效异相催化体系

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-11-25 DOI: 10.1007/s10562-024-04867-9

Vijay P. Mahajan, Prafull A. Jagtap, Bhalchandra M. Bhanage

{"title":"Ni/rGO: An Efficient Heterogeneous Catalytic System for Carbonylative Suzuki Coupling and Alkoxy Carbonylation Reactions with Co2(CO)8 as a Solid C1 Source","authors":"Vijay P. Mahajan, Prafull A. Jagtap, Bhalchandra M. Bhanage","doi":"10.1007/s10562-024-04867-9","DOIUrl":"10.1007/s10562-024-04867-9","url":null,"abstract":"<div><p>The current work presents the synthesis, characterization, and application of nickel-supported reduced graphene oxide (Ni/rGO) as an efficient catalyst for carbonylation reactions. In this work, Ni/rGO was successfully established as a highly effective, durable, and reusable catalyst for both carbonylative Suzuki coupling and alkoxy carbonylation processes utilizing cobalt carbonyl, Co<sub>2</sub>(CO)<sub>8</sub> as a solid carbon monoxide (CO) source. Diaryl ketones and aryl alkyl esters were selectively synthesized in good to outstanding yield. Furthermore, the catalyst is easily recoverable and may be reused five times without significantly decreasing reactivity. The fresh and reused Ni/rGO catalysts were characterized using various methods, comprising XRD, XPS, FE-SEM, TEM, EDX, and TGA. The current procedure is devoid of harmful CO gas. Additionally, the use of earth-abundant and reusable nickel metal catalysts reveals the environmentally benign features of this protocol.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Novel N-heterocyclic Carbene Containing [Fe–Fe] Hydrogenase Model Complex as Bio-Mimetic Catalyst For Proton Reduction and Benzene Hydroxylation 一种新型含 N-杂环羰基的[Fe-Fe]氢化酶模型复合物作为质子还原和苯羟基化的生物模拟催化剂

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-11-25 DOI: 10.1007/s10562-024-04849-x

Xia Zhang, Jiazheng Sun, Meixiang Gao

{"title":"A Novel N-heterocyclic Carbene Containing [Fe–Fe] Hydrogenase Model Complex as Bio-Mimetic Catalyst For Proton Reduction and Benzene Hydroxylation","authors":"Xia Zhang, Jiazheng Sun, Meixiang Gao","doi":"10.1007/s10562-024-04849-x","DOIUrl":"10.1007/s10562-024-04849-x","url":null,"abstract":"<div><p>This study reports the synthesis of a new di-iron complex, μ-(SCH(CH<sub>2</sub>CH<sub>3</sub>)CH<sub>2</sub>S)Fe<sub>2</sub>(CO)<sub>5</sub>IPr (<b>2</b>, where IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene), and its comprehensive characterization using mass spectrometry, elemental analysis, solution IR, and NMR spectroscopy. The CO/L substitution reaction was used to introduce the sterically hindered nitrogen-containing heterocyclic carbene ligand (IPr) and coordinate it to the iron center under mild conditions. The di-iron complex was studied for its potential in proton electrocatalysis and benzene hydroxylation. Complex <b>2</b> underwent two irreversible reductions around − 2.204 V and effectively facilitated proton reduction into hydrogen using HOAc as the proton source. Complex <b>2</b> catalyzed the hydroxylation of benzene, resulting in a phenol yield of 12.9% and nearly 96% selectivity.</p><h3>Graphical Abstract</h3><p>A new diiron complex µ-(SCH(CH<sub>2</sub>CH<sub>3</sub>)CH<sub>2</sub>S)Fe<sub>2</sub>(CO)<sub>5</sub>IPr was synthesized and characterized by solution IR spectra, mass spectrum,NMR spectra and elemental analysis. This complex were used as catalyst for proton reduction and benzene hydroxylation.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Structural Changes in Manganese Oxides on Zeolite Y in Benzene Oxidation with Ozone and Post-Heat Treatment 臭氧和后热处理苯氧化过程中沸石 Y 上氧化锰的结构变化

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-11-25 DOI: 10.1007/s10562-024-04836-2

Xuerui Zheng, Hisahiro Einaga

{"title":"Structural Changes in Manganese Oxides on Zeolite Y in Benzene Oxidation with Ozone and Post-Heat Treatment","authors":"Xuerui Zheng, Hisahiro Einaga","doi":"10.1007/s10562-024-04836-2","DOIUrl":"10.1007/s10562-024-04836-2","url":null,"abstract":"<div><p>MnO<sub>X</sub> supported on a zeolite Y catalyst (MnO<sub>X</sub>/Y) is widely utilized for the removal of volatile organic compounds (VOCs), providing an understanding of catalyst structural changes and the factors influencing these changes. This study introduces a heat treatment method to recover the catalyst. The efficacy of the treated catalysts in enhancing the oxidation of benzene by ozone was improved. Investigation of the behavior of catalysts prepared from acetate and nitrate precursors revealed a common trend: MnO<sub>X</sub> in the catalysts was readily reduced to MnO by intermediate products, acids, aldehydes, and phenols formed during the benzene ozonation process, as evidenced by X-ray absorption fine structure temperature-programmed reduction and in situ Fourier-transform infrared spectroscopy analyses. Heat treatment at 200 °C was found to be insufficient for the restoration of the MnO<sub>X</sub> structure, which was attributed to the persistence of acids and hydrocarbons within the catalyst. 500 °C was determined to be more appropriate for the regeneration of the used catalysts, indicating the critical role of the heat treatment conditions in maintaining the effectiveness of the MnO<sub>X</sub>/Y catalysts in VOC removal applications.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Facile Decoration of Ultra-fine Pd Nanoparticles on Co(OH)2 Nanowire Arrays via an Etching-deposition Process for Highly Efficient Electrocatalytic Hydrodechlorination of 2,4-dichlorophenol 通过蚀刻沉积工艺在 Co(OH)2 纳米线阵列上简便地装饰超细钯纳米颗粒，实现 2,4-二氯苯酚的高效电催化加氢脱氯反应

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-11-25 DOI: 10.1007/s10562-024-04889-3

Qing Gao, Yingxue Yu, Chengyun Wang, Rui Xiang, Hao Lu

{"title":"Facile Decoration of Ultra-fine Pd Nanoparticles on Co(OH)2 Nanowire Arrays via an Etching-deposition Process for Highly Efficient Electrocatalytic Hydrodechlorination of 2,4-dichlorophenol","authors":"Qing Gao, Yingxue Yu, Chengyun Wang, Rui Xiang, Hao Lu","doi":"10.1007/s10562-024-04889-3","DOIUrl":"10.1007/s10562-024-04889-3","url":null,"abstract":"<div><p>Designing an efficient Pd-based catalyst with high atom utilization efficiency is a pressing priority, presenting a significant challenge for the practical deployment of electrocatalytic hydrodechlorination (EHDC), a promising method for degrading hazardous chlorophenols (CPs). Herein, a hybrid Pd/Co(OH)<sub>2</sub>/NF electrode for the dechlorination of 2,4- dichlorophenol (2,4-DCP) is fabricated by a newly developed etching-deposition approach. Physical characterizations demonstrate that ultra-fine Pd nanoparticles (1.57 ± 0.29 nm) accompany with Pd<sup>2+</sup> hydroxides are uniformly deposited on the surface of Co(OH)<sub>2</sub> nanowire arrays. EHDC tests on Pd/Co(OH)<sub>2</sub>/NF show an impressive catalytic performance with a 94.5% removal efficiency within 2 h, fast reaction kinetics (0.024 min<sup>− 1</sup>) and remarkable current efficiency (55.4%), highly competitive with literature reports. Mechanism investigations indicate that the even distribution of Pd nanoparticles and coexistence of Pd<sup>2+</sup> sites facilitate the production of active H<sup>*</sup> and activation of C-Cl, contributing to the improvement of activity.</p></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Dual Role of Choline Azide for One-Pot Synthesis of Quinolines and Quinazolines Using Versatile Magnetic Cu-Oxalate@Fe3O4 Catalyst 利用多功能磁性 Cu-Oxalate@Fe3O4 催化剂一锅合成喹啉和喹唑啉时叠氮化胆碱的双重作用

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-11-25 DOI: 10.1007/s10562-024-04856-y

Akshay S. Limaye, R. Thrilokraj, Shoyebmohamad F. Shaikh, Umesh A. Kshirsagar, Jan Grzegorz Małecki, Abdullah M. Al-Enizi, Pravin Y. Kogale, Ramesh B. Dateer

{"title":"Dual Role of Choline Azide for One-Pot Synthesis of Quinolines and Quinazolines Using Versatile Magnetic Cu-Oxalate@Fe3O4 Catalyst","authors":"Akshay S. Limaye, R. Thrilokraj, Shoyebmohamad F. Shaikh, Umesh A. Kshirsagar, Jan Grzegorz Małecki, Abdullah M. Al-Enizi, Pravin Y. Kogale, Ramesh B. Dateer","doi":"10.1007/s10562-024-04856-y","DOIUrl":"10.1007/s10562-024-04856-y","url":null,"abstract":"<div><p>The present study demonstrates biogenically synthesized copper-oxalate supported on iron oxide (Fe<sub>3</sub>O<sub>4</sub>) and its implementation for pharmaceutically important quinoline and quinazoline synthesis. The formation of a new catalyst was confirmed by Field emission scanning electron microscope (FE-SEM) and Brunauer–Emmett–Teller (BET) analysis that displayed a spherical shape with a surface area of 18.407 m<sup>2</sup> g<sup>−1</sup>, and an active metal concentration of 12.02 w/w%. The dual role of choline azide as a green solvent as well as a nitrogen source is demonstrated and a series of quinoline and quinazoline derivatives were synthesized in good to excellent yield. Importantly, catalyst recyclability, mechanistic investigations, control experiments, and reaction economy highlight the importance of methodology.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Green Synthesis Montmorillonite Clay Supported Co3O4 Nanoparticles and Its Catalytic Efficacy Towards Baeyer–Villiger Oxidation 以蒙脱石粘土为载体的 Co3O4 纳米粒子的绿色合成及其对拜尔-维利格氧化作用的催化功效

IF 2.3 4区化学

Catalysis Letters Pub Date : 2024-11-25 DOI: 10.1007/s10562-024-04872-y

Subrat Jyoti Borah, Rashmi Rekha Hazarika, Sumit Gorh, Dipanka Dutta

{"title":"Green Synthesis Montmorillonite Clay Supported Co3O4 Nanoparticles and Its Catalytic Efficacy Towards Baeyer–Villiger Oxidation","authors":"Subrat Jyoti Borah, Rashmi Rekha Hazarika, Sumit Gorh, Dipanka Dutta","doi":"10.1007/s10562-024-04872-y","DOIUrl":"10.1007/s10562-024-04872-y","url":null,"abstract":"<div><p>Co<sub>3</sub>O<sub>4</sub> nanoparticles supported on modified montmorillonite clay (Co<sub>3</sub>O<sub>4</sub>@Mont) were synthesized by using green natural extract (tulsi leaf) under mild reaction conditions. The modification of montmorillonite clay was executed by refluxing the clay with H<sub>3</sub>PO<sub>4</sub> under controlled condition to generate a porous matrix with high surface area which acts as support for the generation and stabilization of nanoparticles. The Co<sub>3</sub>O<sub>4</sub>@Mont nanocomposite was characterized by UV–Visible spectroscopy, Scanning Electron Microscopy with Energy Dispersive X-Ray (SEM–EDX), Transmission Electron Microscopy (TEM), Powder X-Ray Diffraction (P-XRD) and N<sub>2</sub>-adsorption–desorption analysis. The synthesized nanocomposite showed excellent catalytic efficacy towards the Baeyer–Villiger oxidation of various Ketones using H<sub>2</sub>O<sub>2</sub> as oxidant at room temperature. The catalytic B-V oxidation gives the best results in aqueous medium and gives maximum conversion of the product in 1 h. The completion of the reaction in short time (1 h) under mild reaction conditions with green solvent signifies the applicability of the nano-catalyst for the B-V oxidation over other reported catalyst. Also, the catalyst can be recovered easily by simple filtration at the end of the reaction. Further, the recyclability of the used Co<sub>3</sub>O<sub>4</sub>@Mont nano-catalyst for the same substrate was performed and its catalytic efficacy is maintained without any significant loss for various catalytic cycles.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><img></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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