ChemCatChem最新文献_第3页

Engineering Highly Efficient Mullite SmMn2O5 Catalysts for Selective Aerobic Solvent-Free Oxidation of Toluene to Benzoic Acid 工程高效莫来石SmMn2O5催化剂用于甲苯选择性好氧无溶剂氧化制苯甲酸

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-09-30 DOI: 10.1002/cctc.71098

Xuemei Jing, Cheng Yang, Jiali Xiao, Guojun Shi

{"title":"Engineering Highly Efficient Mullite SmMn2O5 Catalysts for Selective Aerobic Solvent-Free Oxidation of Toluene to Benzoic Acid","authors":"Xuemei Jing, Cheng Yang, Jiali Xiao, Guojun Shi","doi":"10.1002/cctc.71098","DOIUrl":"https://doi.org/10.1002/cctc.71098","url":null,"abstract":"<div>\u0000 \u0000 Benzoic acid is produced via the selective oxidation or chlorination-hydrolysis of toluene, suffering from the high recovery cost of homogeneous catalysts, or the severe corrosion and the chlorine-contamination of products. Herein, the SmMn2O5 catalyst with a mullite structure was prepared by hydrothermal synthesis followed by an etching treatment. The resulting catalyst was tested for the selective oxidation of toluene to benzoic acid under solvent-free conditions using molecular oxygen. The etching by nitric acid not only enhanced the textural properties, and surface oxygen vacancy concentration of the mullite SmMn2O5, but also promoted the reduction of Mn species and the transformation Mn4+ to Mn3+ ions. The well-engineered catalyst exhibited outstanding catalytic performance for the selective aerobic oxidation of toluene to benzoic acid under solvent-free conditions. A toluene conversion of 31.7% and benzoic acid selectivity of 86.1% was realized under the optimal synthetic and reaction conditions. The reusability of the catalyst was well confirmed after multiple recycling runs on the basis of its structural and textural properties and catalytic performance. The manganese-based mullite catalyst fabricated via hydrothermal synthesis and etching may offer new insights for the design and industrial application of catalysts for toluene oxidation.\u0000 </div>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 19","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149072751","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

Temperature Monitoring of Iron Molybdate Catalysts during ODH Reactions Using Coupled Operando Raman/XRD Analysis 用偶联拉曼/XRD分析ODH反应中钼酸铁催化剂的温度监测

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-09-30 DOI: 10.1002/cctc.71086

Hannah M. Wilhelm, Jan Welzenbach, Kathrin Hofmann, Christian Hess, Barbara Albert

{"title":"Temperature Monitoring of Iron Molybdate Catalysts during ODH Reactions Using Coupled Operando Raman/XRD Analysis","authors":"Hannah M. Wilhelm, Jan Welzenbach, Kathrin Hofmann, Christian Hess, Barbara Albert","doi":"10.1002/cctc.71086","DOIUrl":"https://doi.org/10.1002/cctc.71086","url":null,"abstract":"Oxidative dehydrogenation (ODH) reactions represent highly exothermic reactions. Due to their exothermicity, temperature gradients and hot spots are formed within the catalyst bed that may cause overoxidation, leading to lower selectivity, and present challenges regarding heat management. For a detailed understanding of ODH reactions, including structure–property relations, new approaches enabling in situ monitoring of the catalyst temperature are needed. Using lab-based coupled operando Raman/X-ray powder diffraction (XRD) analysis, we investigated iron molybdate (Fe2(MoO4)3) catalysts during ethanol ODH regarding temperature-dependent structural dynamics. To identify heat-induced effects, we added hexagonal boron nitride (h-BN) as an internal standard and performed depth-dependent temperature monitoring, revealing a correlation of (sub-)surface and bulk temperatures with ethanol conversion rates, highlighting the relevance of catalyst heating at high conversions. Using this newly developed in situ thermometer, the temperature of the catalyst can be probed within the penetration depths of the two applied methods. For the ethanol ODH over iron molybdate, no temperature gradient was detected, showing that the surface and the bulk are thermally equilibrated. Our findings demonstrate the importance of considering heat effects during ODH reactions for technical applications but also for the analysis and interpretation of operando structural data in the context of mechanistic studies.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 19","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.71086","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149146920","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

Current-Dependent Pathway Switching in Electrochemical Oxidative Dehydrogenation of Ethane Over an LSC Electrode in SOEC SOEC中LSC电极上乙烷氧化脱氢的电流依赖通路切换

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-09-30 DOI: 10.1002/cctc.202600023

Zhijie Wang, Jinxuan Hao, Hongpeng Fan, Xiao Lin, Linjuan Zhang, Jian-Qiang Wang

{"title":"Current-Dependent Pathway Switching in Electrochemical Oxidative Dehydrogenation of Ethane Over an LSC Electrode in SOEC","authors":"Zhijie Wang, Jinxuan Hao, Hongpeng Fan, Xiao Lin, Linjuan Zhang, Jian-Qiang Wang","doi":"10.1002/cctc.202600023","DOIUrl":"https://doi.org/10.1002/cctc.202600023","url":null,"abstract":"<div>\u0000 \u0000 Electrochemical oxidative dehydrogenation (ODH) of ethane in solid oxide electrolysis cells (SOECs) offers a promising alternative to energy-intensive steam cracking. This work investigates the ODH mechanism using an LSC (La0.6Sr0.4CoO3-δ) anode in a 5 cm*5 cm single cell, achieving high ethylene selectivity (∼44%) at 650°C. In contrast, operation at elevated temperatures (e.g., 700°C) leads to anode degradation and a shift in selectivity. Through a combination of electrochemical impedance spectroscopy with distribution of relaxation times (EIS-DRT) and detailed product analysis, we reveal a decisive shift in the dominant reaction pathway governed by the applied current density. At low current densities, the direct electrochemical oxidation of ethane by surface oxygen species prevails. As the current increases, the mechanism transitions to a tandem process where the oxygen evolution reaction occurs first, followed by the thermochemical ODH of ethane. This mechanistic crossover is rationalized by the competition between ethane diffusion to active sites and the rate of electrochemical oxygen supply. These findings provide fundamental insights into the interplay of electrochemical and thermochemical steps in high-temperature alkane electrolysis, highlighting current density as a key lever for controlling selectivity.\u0000 </div>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 19","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149072749","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

Supported Bimetallic Pt/X Catalysts for the Hydrodeoxygenation of N-(2-hydroxyethyl)Succinimide 负载型双金属Pt/X催化剂用于N-（2-羟乙基）琥珀酰亚胺的加氢脱氧

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-09-30 DOI: 10.1002/cctc.71095

Matthias Urban, Marcus Stephan Lehnertz, Joby Sebastian, Claudia Weidenthaler, Regina Palkovits

{"title":"Supported Bimetallic Pt/X Catalysts for the Hydrodeoxygenation of N-(2-hydroxyethyl)Succinimide","authors":"Matthias Urban, Marcus Stephan Lehnertz, Joby Sebastian, Claudia Weidenthaler, Regina Palkovits","doi":"10.1002/cctc.71095","DOIUrl":"https://doi.org/10.1002/cctc.71095","url":null,"abstract":"Biomass presents an attractive resource for a sustainable production of platform chemicals and monomers. Especially N-containing compounds are broadly utilized as solvents, in polymer production and as fine chemicals or pharmaceutics. An important compound is N-vinyl-pyrrolidone used for polyvinylpyrrolidone production (PVP). Today it is produced based on fossil acetylene via Reppe chemistry and vinylation. However, it can be accessed from biomass-derived succinic acid by reductive amination with ethanolamine and hydrodeoxygenation followed by dehydration of the ethanol group to provide the vinyl functionality. Previous studies identified selective hydrodeoxygenation of the intermediate N-(2-hydroxyethyl)succinimide (HESim) as crucial to achieve high selectivity and yield. At the same time, an LCA study highlighted the significant impact of selective product formation on the CO2-footprint of this route. This study discusses bimetallic Pt/X (X = V, Cu, Ni, Co, and Mo) catalysts supported on TiO2 for efficient hydrodeoxygenation of HESim. Aiming for high activity and overall performance, alternative metal combinations were screened and recycling experiments conducted. Combining Pt and Mo on TiO2 allowed achieving 97% HESim conversion and 95% yield of the two desired products N-(2-hydroxyethyl)-2-pyrrolidone (HEP) and 4-hydroxy-N-(2-hydroxyethyl)-butanamide (HEBA). Accordingly, Pt/Mo on TiO2 outperforms the previous literature best performer based on a supported Pt/Re-catalyst.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 19","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.71095","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149072577","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

Ga-Modified MCM-41 Catalyzed Selective Isomerization of α-Pinene Oxide to Campholenic Aldehyde ga修饰的MCM-41催化α-蒎烯氧化物选择性异构化制樟烯醛

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-09-30 DOI: 10.1002/cctc.71096

Hanuman G. Kachgunde, Amit R. Sonkar, Ankush V. Biradar

引用次数: 0

Synergistic Plasmonic-Catalytic Engineering of AgCo/g-C3N4 Nanocomposites for Efficient Photocatalytic and Electrocatalytic Hydrogen Evolution AgCo/g-C3N4纳米复合材料高效光催化和电催化析氢的协同等离子体催化工程

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-09-29 DOI: 10.1002/cctc.71094

Montu Gogoi, Deepshikha Roy, Nirupam Das, Kalyanjyoti Deori

{"title":"Synergistic Plasmonic-Catalytic Engineering of AgCo/g-C3N4 Nanocomposites for Efficient Photocatalytic and Electrocatalytic Hydrogen Evolution","authors":"Montu Gogoi, Deepshikha Roy, Nirupam Das, Kalyanjyoti Deori","doi":"10.1002/cctc.71094","DOIUrl":"https://doi.org/10.1002/cctc.71094","url":null,"abstract":"<div>\u0000 \u0000 This study presents the synthesis of a bimetallic AgCo/g-C3N4 nanocomposite through an efficient surfactant-assisted deposition co-reduction technique and evaluates its bifunctional potential in both photocatalytic and electrocatalytic water splitting. The structural and spectroscopic characterizations reveal the uniform dispersion of AgCo bimetallic nanoparticles on the g-C3N4 matrix, which enhances the photoresponse qualities, promotes charge separation and extends its lifespan through synergistic effects. Surprisingly, the incorporation of g-C3N4 notably improved the photocatalytic efficiency of the nanocomposite compared to the individual AgCo or g-C3N4 catalysts owing to the effective interfacial interaction between the counterparts of the nanocomposite. AgCo(3:1)/g-C3N4 exhibits a remarkable photocatalytic H2 evolution rate of 16,573.9 µmol g−1 h−1 under visible-light irradiation, outperforming both pristine g-C3N4 and AgCo(3:1). For electrocatalytic H2 evolution, the nanocomposite exhibits an overpotential of 373.27 mV at 10 mA cm−2 and a favorable Tafel slope of 94.6 mV dec−1, surpassing the activities of individual components of the nanocomposite. The synergistic plasmonic and catalytic role of Ag and Co along with the unique electronic properties of g-C3N4 leads to the enhancement in catalytic performances. Further, the stability assessments exhibit persistent catalytic activity over multiple cycles with negligible efficiency loss.\u0000 </div>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 19","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149072644","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

Engineering of Defect Modulation Enhances the Catalytic Degradation of Tributyl Phosphate Wastewater With Fe-Doped BaZrO3 Catalysts 掺铁BaZrO3催化剂催化降解磷酸三丁酯废水的缺陷调制工程

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-09-29 DOI: 10.1002/cctc.71091

Aiping You, Peijuan Liu, Weijun Liu, Xiaomin Liu, Shipeng Zhang, Tao Liu, Keda Yang, Peiwei Han, Lei Ma

{"title":"Engineering of Defect Modulation Enhances the Catalytic Degradation of Tributyl Phosphate Wastewater With Fe-Doped BaZrO3 Catalysts","authors":"Aiping You, Peijuan Liu, Weijun Liu, Xiaomin Liu, Shipeng Zhang, Tao Liu, Keda Yang, Peiwei Han, Lei Ma","doi":"10.1002/cctc.71091","DOIUrl":"https://doi.org/10.1002/cctc.71091","url":null,"abstract":"<div>\u0000 \u0000 Oxygen vacancies (OVs) dominate the catalytic performance of perovskite oxides, yet their controllable preparation and surface activation are hard to achieve. Herein, a temperature-controlled hydrogen reduction strategy was developed to treat B-site Fe-doped BZO (BFZO), which significantly enriches the surface oxygen vacancies (OVs) available for catalysis. The as-prepared catalysts were applied in peroxydisulfate (PDS)-driven Fenton-like oxidation to degrade tributyl phosphate (TBP). We systematically studied how 500°C–900°C reduction temperatures alter Fe valence states, crystal structure, defect distribution, and catalytic activity, and clarified the structure-activity relationship via XRD, Raman, and XPS characterizations. The results reveal that Fe doping triggers local lattice distortion. Elevated reduction temperature reduces Fe3+ to Fe2+, triggering lattice oxygen loss and accumulating surface OVs. The catalyst reduced at 800°C possesses the maximum surface OVs content. At 80°C, the BFZO-800 catalyst achieves a TOC removal of 41.79%, significantly higher than that of pristine BZO (29.22%) and unreduced BFZO (31.49%), owing to its enriched surface oxygen vacancies. This work offers a simple defect engineering route for perovskite catalyst design and guides Fenton-like treatment of refractory organic wastewater.\u0000 </div>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 19","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149072719","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

Front Cover: Low Dimension f-MWCNT/Ti3C2 MXene Nanocomposite for Alkaline Hydrogen Evolution Reaction 封面：用于碱性析氢反应的低维f-MWCNT/Ti3C2 MXene纳米复合材料

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-09-29 DOI: 10.1002/cctc.71082

Yoga Romdoni, Salsabila M. Kuntjoro, Ridla Bakri, Angga Hermawan, Budi Riza Putra, Wulan Tri Wahyuni, Rudi Heryanto, Mohamed Kheireddine Aroua, Jia Hong Pan, Munawar Khalil

引用次数: 0

Liquid Metals as Dynamic and Programmable Catalysts for Photocatalysis 液态金属作为光催化的动态和可编程催化剂

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-09-23 DOI: 10.1002/cctc.71074

Ernesto de la Torre Miranda, Sofia Shekhova, Andrei Khodakov, Carole Lamonier, Vitaly V. Ordomsky

{"title":"Liquid Metals as Dynamic and Programmable Catalysts for Photocatalysis","authors":"Ernesto de la Torre Miranda, Sofia Shekhova, Andrei Khodakov, Carole Lamonier, Vitaly V. Ordomsky","doi":"10.1002/cctc.71074","DOIUrl":"https://doi.org/10.1002/cctc.71074","url":null,"abstract":"Liquid metals (LMs) have recently emerged as a unique class of materials for photocatalysis, offering dynamic physicochemical properties that fundamentally differ from those of conventional solid catalysts. Their intrinsic fluidity, high electrical conductivity, and ability to spontaneously form semiconducting oxide shells enable the creation of adaptive metal-semiconductor heterostructures that enhance light absorption, charge separation, and charge transport. In photocatalytic systems, LMs act not only as cocatalysts or supports but also as active electronic reservoirs, plasmonic light harvesters, and reactive platforms that direct the in situ formation and evolution of photoactive interfaces. This review summarizes recent advances in LM-based photocatalysts, covering their fundamental properties, preparation strategies, and applications in greenhouse gas conversion, water splitting, pollutant degradation, and hybrid systems. Emphasis is placed on the mechanistic roles of LMs, including dynamic heterojunction formation, plasmonic hot-carrier generation, and stimuli-responsive interfacial reconfiguration under operating conditions. By highlighting emerging structure–activity relationships, this review outlines future opportunities for exploiting LMs as adaptive and electronically programmable platforms for solar energy conversion and environmental remediation.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 18","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.71074","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149048361","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

Rationally Designed S-Doped Pd/ZnInOx for Enhanced Photothermal CO2 Conversion 合理设计s掺杂Pd/ZnInOx增强CO2光热转化

IF 4.1 3区化学

ChemCatChem Pub Date : 2026-09-23 DOI: 10.1002/cctc.71085

Jiawei Fu, Qiyuan Xiang, Zirui Liu, Xianjin Wu, Dun Fu, Wen Li, Kuncan Wang

{"title":"Rationally Designed S-Doped Pd/ZnInOx for Enhanced Photothermal CO2 Conversion","authors":"Jiawei Fu, Qiyuan Xiang, Zirui Liu, Xianjin Wu, Dun Fu, Wen Li, Kuncan Wang","doi":"10.1002/cctc.71085","DOIUrl":"https://doi.org/10.1002/cctc.71085","url":null,"abstract":"<div>\u0000 \u0000 Photothermal CO2 conversion to CO offers a promising pathway toward net-zero carbon management. Herein, we report an S-doped Pd/ZnInOx photothermal catalyst derived from ZnIn2S4 via a solid-state reduction strategy. The catalyst exhibits high activity and stability for photothermal CO2 conversion, yielding 28% conversion and ∼100% CO selectivity at 350°C under 0.8 W·cm−2 irradiation. S doping significantly reduces the apparent activation energy of Pd/ZnInOx from 108.52 to 65.42 kJ·mol−1. Spectroscopic characterizations reveal that sulfur doping effectively modulates the band structure and electronic distribution, thereby enhancing light absorption while promoting the separation and migration of photogenerated charge carriers. In situ DRIFTS confirms that microreactors induced by S-doped Pd/ZnInOx induces a localized microenvironment that facilitates the enrichment of *CO32− and *CO intermediates. This work elucidates the pivotal role of S-induced electronic structure modulation and interfacial synergistic effects in photothermal CO2 conversion, offering new insights into the rational design of highly efficient photothermal catalytic systems.\u0000 </div>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 18","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149048140","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