ChemCatChem最新文献_第9页

Multifunctional Sustainable Carbon Catalyst for Glucose to Fructose Isomerization Reaction 葡萄糖-果糖异构化反应的多功能可持续碳催化剂

IF 3.8 3区化学

ChemCatChem Pub Date : 2025-04-23 DOI: 10.1002/cctc.202500440

Charf Eddine Bounoukta, Beatriz Lara, Gabriel Delgado Martín, María Isabel Domínguez, Anna Penkova, Fatima Ammari, Svetlana Ivanova, Miguel Ángel Centeno

引用次数: 0

Oxidative N-Formylation of Amines to Formamides 氨基氧化n -甲酰化生成甲酰胺

IF 3.8 3区化学

ChemCatChem Pub Date : 2025-04-23 DOI: 10.1002/cctc.202500359

Prof. Dr. Xingchao Dai, Prof. Dr. Jabor Rabeah

引用次数: 0

Incorporated Hydrogen into Mixed Oxides Provides A Novel and Versatile Concept to Promote Catalytic Oxidation Reactions 在混合氧化物中加入氢为促进催化氧化反应提供了一种新颖而通用的概念

IF 3.8 3区化学

ChemCatChem Pub Date : 2025-04-23 DOI: 10.1002/cctc.202500139

Herbert Over, Wei Wang

{"title":"Incorporated Hydrogen into Mixed Oxides Provides A Novel and Versatile Concept to Promote Catalytic Oxidation Reactions","authors":"Herbert Over, Wei Wang","doi":"10.1002/cctc.202500139","DOIUrl":"https://doi.org/10.1002/cctc.202500139","url":null,"abstract":"Hydrogen promotion of mixed oxides is a rather general approach to tune the oxidation performance in both thermal and electrocatalysis. We have exemplified this approach with the catalytic propane combustion, CO oxidation, HCl oxidation, and the oxygen evolution reaction (OER), the latter reaction representing the bottleneck in water electrolysis for the production of green hydrogen from renewable energy sources. For the incorporation of hydrogen into mixed oxides (hydrogen promotion), a specific design strategy is proposed: the mixed oxide (solid solution) consists of one metal oxide that is capable of activating H2 dissociation and a second component that stabilizes the mixed oxide against chemical reduction upon exposure to H2 at temperatures of 150–250 °C. To date this concept has been successfully demonstrated for solid solutions with rutile structure (RuxTi1-xO2 and IrxTi1-xO2). Hydrogen promotion of mixed oxides is expected to be useful in hydrogenation catalysis as well. Other mixed oxide systems in which hydrogen promotion is observed remain to be discovered. Hydrogenation of catalysts is so simple that it should be included in routine screening protocols of oxidation catalysts.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.202500139","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144367341","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

Assembly of Ultrathin Palladium-Platinum Nanosheets for Efficient C1 and C2 Alcohol Oxidation 用于高效C1和C2醇氧化的超薄钯铂纳米片的组装

IF 3.8 3区化学

ChemCatChem Pub Date : 2025-04-22 DOI: 10.1002/cctc.202500303

Siyan Liu, Yu Zhao, Yidian Wang, Dr. Jie Yan, Prof. Peizhi Guo

{"title":"Assembly of Ultrathin Palladium-Platinum Nanosheets for Efficient C1 and C2 Alcohol Oxidation","authors":"Siyan Liu, Yu Zhao, Yidian Wang, Dr. Jie Yan, Prof. Peizhi Guo","doi":"10.1002/cctc.202500303","DOIUrl":"https://doi.org/10.1002/cctc.202500303","url":null,"abstract":"Direct alcohol fuel cells (DAFCs) are promising energy conversion technologies due to their low toxicity, high energy density, and versatile fuel sources. However, the lack of efficient and stable anode catalysts remains a critical obstacle to commercialization. Herein, we report a class of palladium-platinum nanosheet assemblies (Pd-Pt NSAs) with tunable compositions (Pd₇Pt₃, Pd₄Pt₁, and Pd₉Pt₁) and a face-centered cubic structure, designed to boost methanol oxidation reaction (MOR) and ethanol oxidation reaction (EOR) performance. These catalysts feature a unique multilayered nanosheet structure, which provides abundant active sites and high electrochemically active surface areas (ECSAs). Among the synthesized catalysts, Pd₄Pt₁ NSA demonstrates exceptional mass activities of 2310 mA mg⁻¹ for MOR and 2260 mA mg⁻¹ for EOR, surpassing commercial Pd/C by 7.62-fold and 4.09-fold, respectively. The superior performance arises from three synergistic factors: (i) Electronic modulation via ligand effects (electron transfer between Pd and Pt) and strain effects (lattice expansion with minimal Pd-Pt lattice mismatch ≤ 0.77%), which collectively optimize intermediate adsorption; (ii) Enhanced ECSAs enabled by the ultrathin, high-surface-area nanosheet assemblies; (iii) Structural robustness of the interconnected nanosheet network, ensuring long-term stability. This work provides a scalable strategy for engineering Pd/Pt-based nanostructures with atomic-level control, offering new avenues for high-performance fuel cell catalysts.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144367337","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

Mechanically Induced Contact-Electro-Catalysis: Free Radical Generation, Reaction Pathways, and Catalytic Applications 机械诱导接触电催化：自由基的产生、反应途径和催化应用

IF 3.8 3区化学

ChemCatChem Pub Date : 2025-04-22 DOI: 10.1002/cctc.202500282

Zihan Liang, Weixin Li, Jialuo Tu, Feng Ru Fan

{"title":"Mechanically Induced Contact-Electro-Catalysis: Free Radical Generation, Reaction Pathways, and Catalytic Applications","authors":"Zihan Liang, Weixin Li, Jialuo Tu, Feng Ru Fan","doi":"10.1002/cctc.202500282","DOIUrl":"https://doi.org/10.1002/cctc.202500282","url":null,"abstract":"Contact-electro-catalysis (CEC) represents an emerging interdisciplinary field that combines physical mechanics with chemical catalysis to drive chemical reactions via electron transfer across solid–liquid–gas triple-phase interfaces. Although it holds great potential, the basic mechanisms behind these chemical processes and the principles of mechanical excitation are not fully understood, which makes further development and practical use of CEC challenging. This review provides a comprehensive overview of free radical generation and reaction pathways in CEC. It begins with an exploration of the contact electrification mechanism and the impact of various mechanical forces, with a particular emphasis on the role of ultrasound in generating powerful interfacial electric fields. The review then compares the electric double layer in CEC with that in conventional systems. Next, the pathways for free radicals’ formation are discussed in detail, along with the influence of various atmospheric conditions on radical generation and reaction mechanisms. Additionally, strategies for integrating CEC with complementary systems to enhance catalytic performance are examined, and the review also summarizes the applications of CEC in environmental and energy-related fields, underscoring its importance for the future advancement of CEC technology.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 11","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232252","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

Palladium Phosphide Supported on 3D Nitrogen-Doped Reduced Graphene Oxide for Efficient Formic Acid Electro-Oxidation 三维氮掺杂还原氧化石墨烯负载磷化钯高效甲酸电氧化

IF 3.8 3区化学

ChemCatChem Pub Date : 2025-04-22 DOI: 10.1002/cctc.202500425

Adil Amin Wani, Mohammad Yaseen Kuchey, Aamir Yaseen Bhat, Pravin P Ingole, Mohsin Ahmad Bhat

{"title":"Palladium Phosphide Supported on 3D Nitrogen-Doped Reduced Graphene Oxide for Efficient Formic Acid Electro-Oxidation","authors":"Adil Amin Wani, Mohammad Yaseen Kuchey, Aamir Yaseen Bhat, Pravin P Ingole, Mohsin Ahmad Bhat","doi":"10.1002/cctc.202500425","DOIUrl":"https://doi.org/10.1002/cctc.202500425","url":null,"abstract":"The operational, sustainability, safety, energy, and power advantages of direct formic acid fuel cells (DFAFCs) have established them as promising direct liquid fuel cell (DLFC) setups suitable for powering portable electronic devices and electric vehicles. However, the unavailability of cost-effective, stable, and efficient anode materials continues to hamper the large-scale commercialization of DFAFCs. Herein, we report a simple, easily scalable, one-pot hydrothermal strategy for the synthesis of nanoscale palladium phosphide (PdP) loaded three-dimensional nitrogen-doped graphene (3D-NrGO/PdP) composites as a potential anode electrocatalyst for formic acid electro-oxidation (FAEO). The stability and electrocatalytic activity of 3D-NrGO/PdP are shown to be strongly composition sensitive, with 3D-NrGO/PdP(2:1) (Pd:P ratio of 2:1) composite exhibiting the highest activity, stability, and tolerance to higher concentrations of formic acid under DFAFCs relevant conditions. The exceptionally high electrochemically active surface area, high electronic conductivity, and positive synergism among the components of optimally composed 3D-NrGO/PdP(2:1) composite are demonstrated to endow it with excellent electrochemical stability, low resistance to charge transfer, and hence high electrocatalytic performance toward FAEO. The excellent stability and electrocatalytic performance (mass activity) as observed for the 3D-NrGO/PdP(2:1) composite in the present work is far better than those reported till date for FAEO.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144367340","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

Influence of Reactive Additives on the Polyoxometalate-Catalyzed Oxidation of Xylose to Formic Acid 活性添加剂对多金属氧酸催化木糖氧化制甲酸的影响

IF 3.8 3区化学

ChemCatChem Pub Date : 2025-04-22 DOI: 10.1002/cctc.202500096

Jan-Dominik H. Krueger, Dhanushiyaa. Sivarajah, Maximilian J. Poller, David. Robinson, Jakob. Albert

{"title":"Influence of Reactive Additives on the Polyoxometalate-Catalyzed Oxidation of Xylose to Formic Acid","authors":"Jan-Dominik H. Krueger, Dhanushiyaa. Sivarajah, Maximilian J. Poller, David. Robinson, Jakob. Albert","doi":"10.1002/cctc.202500096","DOIUrl":"https://doi.org/10.1002/cctc.202500096","url":null,"abstract":"Chemo-catalytic biomass valorisation using polyoxometalate (POM) catalysts is a promising strategy for green and sustainable chemistry. Specifically, the production of short-chain carboxylic acids like formic acid (FA) has received much attention. Recently, it has been shown that the selectivity of biomass oxidation processes can be drastically improved by the use of additives like methanol. In this study, the influence of various reactive additives on the kinetics of xylose oxidation to FA using the HPA-5 (H8PV5Mo7O40) POM-catalyst has been investigated both in aqueous as well as in aqueous-methanolic solutions. Herein, significant differences in the two reaction systems under investigation could be deduced. In aqueous solution, oxalic acid and acetic acid accelerate xylose conversion by initially reducing the HPA-5 catalyst, generating a more active species. However, benzoic acid and especially propionic acid exert a detrimental effect on the xylose oxidation kinetics. This could be related to an inhibition induced by a competitive binding of the latter acids on the V site of the catalyst, as suggested by density functional theory (DFT) calculations. Moreover, this effect was less pronounced in aqueous-methanolic solution, as the interaction of methanol with both the V and Mo sites of the POM catalyst shown via DFT calculations is much stronger compared to the binding of the reactive additives. This study shows interesting new correlations allowing for further pushing the limits of the OxFA technology toward higher FA selectivities and therefore increased productivity.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.202500096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144367338","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

H2-Assisted Synthesis of Nickel Phosphide Nanocatalysts for the Hydrogenation of Phenylacetylene at Low Temperature h2辅助合成苯乙炔加氢纳米催化剂的研究

IF 3.8 3区化学

ChemCatChem Pub Date : 2025-04-22 DOI: 10.1002/cctc.202500323

Kaltoum Bakkouche, Othmane Darouich, Sophie Carenco

{"title":"H2-Assisted Synthesis of Nickel Phosphide Nanocatalysts for the Hydrogenation of Phenylacetylene at Low Temperature","authors":"Kaltoum Bakkouche, Othmane Darouich, Sophie Carenco","doi":"10.1002/cctc.202500323","DOIUrl":"https://doi.org/10.1002/cctc.202500323","url":null,"abstract":"Nickel phosphide nanoparticles are used as catalysts in a wide range of chemical transformations such as hydrogenation. However, the synthesis of colloidal dispersion of these nanoparticles usually requires high reaction temperature and oleylamine as a reducing agent, which compromises the surface reactivity of the nanocatalysts. This work reports a robust new method of the synthesis of nickel phosphide nanoparticles assisted by H2 and at a lower temperature of 200 °C. Well-crystallized Ni12P5 and Ni2P nanoparticles of 5.5 ± 0.5 nm were successfully prepared using tri-n-octylphosphine (TOP) as the phosphorus source. They were characterized by X-ray diffraction and high-resolution transmission electron microscopy. A higher temperature, reaction time, and TOP/Ni ratio favored the formation of a Ni2P phase over Ni12P5.These nanoparticles were used as catalysts for the hydrogenation of phenylacetylene. At high temperatures (80 and 100 °C), they allowed the full conversion of phenylacetylene to ethylbenzene. Interestingly, they were also active in the lower temperature regime, at 30 °C or even 0 °C, where significant conversions were obtained as soon as at least 0.1 equiv of tri-n-butylphopshine was added as a co-catalyst, and styrene was the major product. The activity of this nanocatalyst in the low-temperature regime outperformed that reported for other nickel phosphide nanoparticles with similar size, but prepared in the presence of oleylamine. This work highlights the relevance of H2-assisted synthesis for the production of nanocatalysts active at temperatures below 30 °C.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.202500323","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144367339","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

Engineered Sulfur Vacancies in Z-scheme ZnS/TiO2 Heterostructure for Dual Photocatalytic Functionality Z-scheme ZnS/TiO2异质结构中硫空位的双光催化功能

IF 3.8 3区化学

ChemCatChem Pub Date : 2025-04-21 DOI: 10.1002/cctc.202500395

Moumita Chandra, Debabrata Pradhan

{"title":"Engineered Sulfur Vacancies in Z-scheme ZnS/TiO2 Heterostructure for Dual Photocatalytic Functionality","authors":"Moumita Chandra, Debabrata Pradhan","doi":"10.1002/cctc.202500395","DOIUrl":"https://doi.org/10.1002/cctc.202500395","url":null,"abstract":"The design of heterojunction semiconductor photocatalysts with well-aligned band edges is crucial for optimizing charge carrier dynamics in photocatalytic water splitting and organic transformations. In this study, a two-step solvothermal and wet chemical method is employed to synthesize sulfur vacancy (sv)-rich ZnS nanowires (NWs) with varying proportions of TiO2 nanoparticles (NPs). Photocatalytic hydrogen evolution study reveals that the optimized sv-ZT0.3 heterostructure exhibits a remarkable hydrogen evolution of 35.77 mmol g−1 due to the Z-scheme charge transfer mechanism significantly outperformed pristine TiO2 (1.02 mmol g−1) and sv-ZnS NWs (4.77 mmol g−1) for a fixed irradiation duration (5 h) with an apparent quantum yield of 25.2% at 366 nm. Sulfur vacancies in ZnS extend the optical absorption, while the heterojunction enhances charge separation, as confirmed by UV–vis and photoluminescence studies. Additionally, sv-ZT0.3 achieved 89.1% conversion of benzyl alcohol to benzaldehyde during hydrogen generation. The superior performance of the heterostructure for integrated solar-driven hydrogen production and selective organic transformations paved the way for advanced photocatalyst development in sustainable energy applications.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 12","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144367548","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

Partial Hydrogenation of Benzene to Cyclohexene: A Review for Ru-Based Catalyst Design 苯部分加氢制环己烯：钌基催化剂设计综述

IF 3.8 3区化学

ChemCatChem Pub Date : 2025-04-19 DOI: 10.1002/cctc.202401562

Xinchao Cheng, Yue He, Yulei Zhu, Zhiwei Wu, Shiying Li, Jianguo Wang, Weibin Fan, Mei Dong

引用次数: 0