Materials Today Catalysis最新文献

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Materials Today Catalysis Pub Date : 2026-03-01 Epub Date: 2026-03-11 DOI: 10.1016/S2949-754X(26)00002-5
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引用次数: 0
Ediorial Board Ediorial董事会
Materials Today Catalysis Pub Date : 2026-03-01 Epub Date: 2026-03-11 DOI: 10.1016/S2949-754X(26)00003-7
{"title":"Ediorial Board","authors":"","doi":"10.1016/S2949-754X(26)00003-7","DOIUrl":"10.1016/S2949-754X(26)00003-7","url":null,"abstract":"","PeriodicalId":100892,"journal":{"name":"Materials Today Catalysis","volume":"12 ","pages":"Article 100137"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147384722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrification of catalytic processes with induction heating: The possible hidden role of non-thermal magnetic fields 感应加热催化过程的电气化:非热磁场可能的隐藏作用
Materials Today Catalysis Pub Date : 2026-03-01 Epub Date: 2025-12-10 DOI: 10.1016/j.mtcata.2025.100134
Spyridon Zafeiratos , Gilles Ulrich , Jean-Mario Nhut , Christophe Michon , Cuong Pham-Huu
{"title":"Electrification of catalytic processes with induction heating: The possible hidden role of non-thermal magnetic fields","authors":"Spyridon Zafeiratos ,&nbsp;Gilles Ulrich ,&nbsp;Jean-Mario Nhut ,&nbsp;Christophe Michon ,&nbsp;Cuong Pham-Huu","doi":"10.1016/j.mtcata.2025.100134","DOIUrl":"10.1016/j.mtcata.2025.100134","url":null,"abstract":"<div><div>The electrification of the chemical industry is a crucial step toward moving away from fossil fuels and achieving a more sustainable energy future. In this context, induction heating has emerged as a promising strategy to enhance catalytic performance in both metal-free carbon catalysts and metal-supported systems. This perspective emphasizes its strong potential, showing that induction heating improves performance not only through localized thermal effects but also through possible non-thermal contributions from alternating current magnetic fields. These fields can influence radical lifetimes, spin states, adsorption–desorption equilibria, and defect reactivity, thereby enabling reaction pathways and selectivities that remain inaccessible under conventional heating. Coupling carbon and supported metal catalysts with induction heating also offers an effective way to mitigate deactivation, as defect sites can act as adsorption centers that, under magnetic field stimulation, promote targeted transformations. Direct evidence for non-thermal contributions to catalytic performance remains scarce, mainly due to the limited availability of operando investigations. Nevertheless, the substantial gains in activity and selectivity observed under induction heating cannot be explained solely by localized thermal effects, suggesting an additional non-thermal influence. These findings point toward new opportunities for designing next-generation catalysts with improved operability and stability. In addition, the combined evidence of localized thermal effects, non-thermal field interactions, and the advantages of carbon-based catalysts shows that the synergy between advanced material design and induction heating provides a powerful pathway for electricity-driven catalysis, with significant implications for decarbonizing the chemical industry and advancing the energy transition.</div></div>","PeriodicalId":100892,"journal":{"name":"Materials Today Catalysis","volume":"12 ","pages":"Article 100134"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Noble metal promoters for Ni catalysts: Use in the steam reforming of distillery wastewater 镍催化剂的贵金属促进剂:在蒸馏废水蒸汽重整中的应用
Materials Today Catalysis Pub Date : 2026-03-01 Epub Date: 2026-02-21 DOI: 10.1016/j.mtcata.2026.100135
P. Cerqueira, I. Giesteira, M.A. Soria, Luis M. Madeira
{"title":"Noble metal promoters for Ni catalysts: Use in the steam reforming of distillery wastewater","authors":"P. Cerqueira,&nbsp;I. Giesteira,&nbsp;M.A. Soria,&nbsp;Luis M. Madeira","doi":"10.1016/j.mtcata.2026.100135","DOIUrl":"10.1016/j.mtcata.2026.100135","url":null,"abstract":"<div><div>This study examines the performance of Ni-based catalysts (herein called NLH) promoted with noble metals (1–2 wt.% of Rh or Ru) supported on hydrotalcite-derived mixed oxides (HDMO) modified with La. These catalysts were tested, for the first time, for the steam reforming of distillery wastewater (DW), a problematic effluent of the wine distillery industry (generated during the production of ethanol or wine spirits), to produce renewable hydrogen. Characterization techniques, including hydrogen temperature-programmed reduction (TPR-H<sub>2</sub>), temperature-programmed desorption of NH<sub>3</sub> and CO<sub>2</sub> (TPD-NH<sub>3</sub>, TPD-CO<sub>2</sub>), transmission electron microscopy (TEM), Raman spectroscopy and scanning electron microscopy-energy-dispersive X-ray spectroscopy (SEM-EDS), were employed to get insights about the prepared materials. Steam reforming tests were performed, the results of which showed H<sub>2</sub> yields in the following order: 2Rh/NLH ∼ 1Rh/NLH &gt; 2Ru/NLH &gt; 1Ru/NLH &gt; NLH. Stability tests demonstrated no H<sub>2</sub> yield loss for 2Rh/NLH or NLH after 24 h on-stream. Coke formation rate was relatively low for all catalysts, and the conversion of total organic carbon and chemical oxygen demand in the condensate was above 99 %. A test with real effluent, sourced from a Portuguese wine distillery, was also performed, providing a proof of concept as to the feasibility of the steam reforming of DW. The conversion of organic carbon and chemical oxygen demand in this test were both <em>ca</em>. 99 %.</div></div>","PeriodicalId":100892,"journal":{"name":"Materials Today Catalysis","volume":"12 ","pages":"Article 100135"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147384724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Urea electrosynthesis from gaseous nitrogen oxides and carbon dioxide: A review 气态氮氧化物和二氧化碳电合成尿素的研究进展
Materials Today Catalysis Pub Date : 2025-12-01 Epub Date: 2025-11-03 DOI: 10.1016/j.mtcata.2025.100128
Yifan Zhou , Changrui Feng , Chenghan Sun , Zekun Chen , Shuying Li , Yuxia Jin , Rui Yang , Yuanchuan Hao , Abuliti Abudula , Guoqing Guan
{"title":"Urea electrosynthesis from gaseous nitrogen oxides and carbon dioxide: A review","authors":"Yifan Zhou ,&nbsp;Changrui Feng ,&nbsp;Chenghan Sun ,&nbsp;Zekun Chen ,&nbsp;Shuying Li ,&nbsp;Yuxia Jin ,&nbsp;Rui Yang ,&nbsp;Yuanchuan Hao ,&nbsp;Abuliti Abudula ,&nbsp;Guoqing Guan","doi":"10.1016/j.mtcata.2025.100128","DOIUrl":"10.1016/j.mtcata.2025.100128","url":null,"abstract":"<div><div>Urea as a vital nitrogen fertilizer and chemical precursor faces unsustainable industrial production via the Bosch-Meiser process, which relies on energy-intensive Haber-Bosch ammonia (NH<sub>3</sub>) and emits significant CO<sub>2</sub>. Urea electrosynthesis through C-N coupling offers a promising alternative by utilizing CO<sub>2</sub> and renewable electricity under ambient conditions. However, the high activation barrier of N<sub>2</sub> (N<img>N bond energy: 941 kJ mol<sup>−1</sup>) limits electrosynthesis efficiency. This review highlights the emerging strategy of substituting nitrogen oxide (NO<sub>x</sub>) pollutants (NO and N<sub>2</sub>O) for N<sub>2</sub> as reactive nitrogen sources, which not only circumvents N<sub>2</sub> activation challenges but also enables simultaneous environmental remediation. The fundamental reaction mechanisms involved in co-reduction of NO<sub>x</sub> and CO<sub>2</sub> are systematically outlined and discussed. Subsequently, the review delves into critical aspects of catalyst design encompassing both computational screening approaches and experimental research findings for developing efficient catalytic systems. A significant focus is placed on analyzing the current limitations hindering practical implementation, including low urea yield rates (UYR) as well as low Faradaic efficiency (FE), challenges posed by low reactant concentrations, and economic barriers related to industrial-scale applications. Finally, the review presents future perspectives to overcome these hurdles, highlighting promising directions such as the development of more efficient computational screening tools, diversification of feedstock sources, and innovative reactor and catalyst design strategies. This co-reduction pathway represents a potentially sustainable and carbon-neutral route for urea production, utilizing greenhouse gases and nitrogen pollutes as direct feedstocks.</div></div>","PeriodicalId":100892,"journal":{"name":"Materials Today Catalysis","volume":"11 ","pages":"Article 100128"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145474390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Facet-specific nitrogen vacancy engineering in BaMO2N (M = Ta, Nb) for enhanced electrochemical ammonia production: Insights from first-principles calculations BaMO2N (M = Ta, Nb)中特定面氮空位工程用于增强电化学制氨:来自第一性原理计算的见解
Materials Today Catalysis Pub Date : 2025-12-01 Epub Date: 2025-10-06 DOI: 10.1016/j.mtcata.2025.100125
Santhanamoorthi Nachimuthu , Che-Chih Chu , Zhong-Lun Li , Kenta Hongo , Ryo Maezono , Yuji Masubuchi , Jyh-Chiang Jiang
{"title":"Facet-specific nitrogen vacancy engineering in BaMO2N (M = Ta, Nb) for enhanced electrochemical ammonia production: Insights from first-principles calculations","authors":"Santhanamoorthi Nachimuthu ,&nbsp;Che-Chih Chu ,&nbsp;Zhong-Lun Li ,&nbsp;Kenta Hongo ,&nbsp;Ryo Maezono ,&nbsp;Yuji Masubuchi ,&nbsp;Jyh-Chiang Jiang","doi":"10.1016/j.mtcata.2025.100125","DOIUrl":"10.1016/j.mtcata.2025.100125","url":null,"abstract":"<div><div>Developing efficient electrocatalysts for the electrochemical nitrogen (N<sub>2</sub>) reduction reaction (eNRR) under ambient conditions is essential for sustainable ammonia (NH<sub>3</sub>) production. In this study, we have used density functional theory (DFT) calculations to investigate the eNRR performance of two perovskite oxynitrides, BaTaO<sub>2</sub>N and BaNbO<sub>2</sub>N. We have systematically analyzed the reduction pathways and free energy profiles along both distal and alternating pathways on the (0 0 1) and (1 0 0) facets to evaluate the influence of surface orientation on catalytic performance. Our results show that the pristine surfaces exhibit weak N<sub>2</sub> adsorption and require a high Gibbs free energy (ΔG &gt; 1.8 eV) for the initial protonation step, thereby limiting their intrinsic catalytic activity for direct NH<sub>3</sub> formation. We further explore defect engineering via the Mars-van Krevelen (MvK) mechanism, wherein lattice anions (nitrogen and oxygen) participate in vacancy formation and subsequent N<sub>2</sub> activation. On the BaNbO<sub>2</sub>N (0 0 1) surface, lattice nitrogen can be readily protonated and reduced to NH<sub>3</sub>, forming nitrogen vacancies that act as catalytic sites to facilitate N<sub>2</sub> adsorption and activation, thereby restoring the catalytic surface for sustained NH<sub>3</sub> production. Notably, the nitrogen-vacant surface (N<sub>v</sub>-BaNbO<sub>2</sub>N (0 0 1)) exhibits significantly enhanced N<sub>2</sub> adsorption, with a lower Gibbs free energy change (ΔG = 0.18 eV) for the first protonation step, and a thermodynamically favorable NH<sub>3</sub> desorption process. Furthermore, the reduced surface strongly suppresses the competing hydrogen evolution reaction (HER), thereby promoting high selectivity for NH<sub>3</sub> production under ambient conditions. This theoretical study offers valuable insights into the design of perovskite oxynitride-based electrocatalysts, offering a promising strategy for sustainable and economically viable NH<sub>3</sub> synthesis.</div></div>","PeriodicalId":100892,"journal":{"name":"Materials Today Catalysis","volume":"11 ","pages":"Article 100125"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145269902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Highly Selective and Efficient Aerobic Epoxidation of Cyclooctene using Electrospun Co-doped Ceria Nanofiber Membranes 电纺丝共掺杂氧化铈纳米纤维膜对环烯高选择性、高效的好氧环氧化反应
Materials Today Catalysis Pub Date : 2025-12-01 Epub Date: 2025-10-30 DOI: 10.1016/j.mtcata.2025.100127
Chathupama Abeyrathne , Mahmoud Aboelkheir , Isaac Olowookere , Md Sazid B. Sadeque , Haiyan Tan , Tamer Uyar , Mustafa S. Yavuz , Steven L. Suib
{"title":"Highly Selective and Efficient Aerobic Epoxidation of Cyclooctene using Electrospun Co-doped Ceria Nanofiber Membranes","authors":"Chathupama Abeyrathne ,&nbsp;Mahmoud Aboelkheir ,&nbsp;Isaac Olowookere ,&nbsp;Md Sazid B. Sadeque ,&nbsp;Haiyan Tan ,&nbsp;Tamer Uyar ,&nbsp;Mustafa S. Yavuz ,&nbsp;Steven L. Suib","doi":"10.1016/j.mtcata.2025.100127","DOIUrl":"10.1016/j.mtcata.2025.100127","url":null,"abstract":"<div><div>Herein, we present the successful synthesis of Co doped Ceria nanofiber catalysts. The synthesized catalysts exhibit uniform distributions of monomodal pore sizes and demonstrate high catalytic activities for the epoxidation of cyclooctene with high selectivity for cyclooctene epoxide and cyclooctene conversion without using any hazardous sacrificial oxidizing agents. Notably, they achieve exceptional selectivity toward cyclooctene epoxide and substantial cyclooctene conversion under aerobic conditions without using any hazardous sacrificial oxidizing agents. Additionally, this epoxidation process is both economically favorable and environmentally friendly, owing to low catalyst loading, ease of catalyst separation, and excellent reusability, yielding a unique catalyst system compared to those previously reported in the literature. Characterization of the synthesized catalysts was carried out using various analytical techniques, including Powder X-ray diffraction (PXRD), X-ray Fluorescence (XRF), Nitrogen (N<sub>2</sub>) sorption studies, scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), and X-ray photoelectron spectroscopy (XPS). These analyses provided a comprehensive understanding of the structural and chemical properties of the catalysts. Among the catalysts studied, the 5CoCe nanofiber catalyst (5 wt% Co-doped) exhibited the highest catalytic efficiency under aerobic conditions, achieving ≥ 99 % selectivity for cyclooctene epoxide and 96 % conversion of cyclooctene in the present study.</div></div>","PeriodicalId":100892,"journal":{"name":"Materials Today Catalysis","volume":"11 ","pages":"Article 100127"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145424766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact of zeolite properties on catalytic hydrodeoxygenation: Spatially segregated metal-acid site engineering for enhanced cascade efficiency 沸石性质对催化加氢脱氧的影响:提高级联效率的空间隔离金属-酸位点工程
Materials Today Catalysis Pub Date : 2025-12-01 Epub Date: 2025-11-15 DOI: 10.1016/j.mtcata.2025.100129
Shengzhe Ding , Min Hu , Ushna Khalid , Run Zou , Carmine D’Agostino , Yani Peng , Qiang Zhang , Yilai Jiao , Christopher M.A. Parlett , Xiaolei Fan
{"title":"Impact of zeolite properties on catalytic hydrodeoxygenation: Spatially segregated metal-acid site engineering for enhanced cascade efficiency","authors":"Shengzhe Ding ,&nbsp;Min Hu ,&nbsp;Ushna Khalid ,&nbsp;Run Zou ,&nbsp;Carmine D’Agostino ,&nbsp;Yani Peng ,&nbsp;Qiang Zhang ,&nbsp;Yilai Jiao ,&nbsp;Christopher M.A. Parlett ,&nbsp;Xiaolei Fan","doi":"10.1016/j.mtcata.2025.100129","DOIUrl":"10.1016/j.mtcata.2025.100129","url":null,"abstract":"<div><div>To reduce the environmental impact of hydrodeoxygenation (HDO) while enhancing process economics, it is crucial to develop advanced catalytic materials that enable HDO under milder conditions, suppress decarboxylation/decarbonylation (DCOx), and eliminate auxiliaries, all while maximising target product yield. Spatial segregation of metal and acid sites has emerged as an effective strategy for improving HDO efficiency in fatty acid conversion. This study explores the influence of zeolitic carrier porosity and acidity on HDO, employing Pd nanoparticles as the metal catalyst and lauric acid as the model substrate. The findings reveal that acidity and mesoporosity are key determinants of substrate conversion, product selectivity, and overall catalytic performance within the same zeolitic framework (MFI ZSM-5). High acidity and hydrophilicity in ZSM-5 zeolites hinder lauric acid conversion by retaining water within the framework, which would adversely affect reaction equilibria in the HDO cascade, whereas mesoporosity in hierarchical ZSM-5, which enhances mass transport, is beneficial for conversion and dodecane formation. For hierarchical ZSM-5, produced via desilication, the less acidic PdNP/HMZSM5-DA25 (25 reflecting the original Si:Al ratio) yields 2.5 times more dodecane than more acidic but less mesoporous PdNP/HMZSM5-DA15 (Si:Al of 15). Expanding this investigation to different zeolitic frameworks (Pd nanoparticles supported on USY, BETA, and ZSM-5) demonstrates that larger micropores further facilitate diffusion and improve catalytic efficiency. PdNP/HUSY-DA exhibits a 32% improvement over PdNP/HMZSM5-DA25, with a dodecane production rate of 6.1 mmol<sub>dodecane</sub> g<sub>catalyst</sub><sup>−1</sup> h<sup>−1</sup>, ranking it among the most superior state-of-the-art HDO systems at comparable conditions. This study validates the spatial segregation of active sites as a robust strategy for stabilising Pd nanoparticles and improving catalyst durability in cascade HDO processes. Fine-tuning zeolite properties is essential for optimising catalyst design to achieve efficient and sustainable biofuel production via HDO.</div></div>","PeriodicalId":100892,"journal":{"name":"Materials Today Catalysis","volume":"11 ","pages":"Article 100129"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145579306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrocatalytic performance in direct ethanol fuel cells: Contributions of monometallic, bimetallic, and trimetallic catalysts 直接乙醇燃料电池的电催化性能:单金属、双金属和三金属催化剂的贡献
Materials Today Catalysis Pub Date : 2025-12-01 Epub Date: 2025-09-15 DOI: 10.1016/j.mtcata.2025.100124
Pariksha Bishnoi , Kirti Mishra , Urvashi Sen , Samarjeet Singh Siwal
{"title":"Electrocatalytic performance in direct ethanol fuel cells: Contributions of monometallic, bimetallic, and trimetallic catalysts","authors":"Pariksha Bishnoi ,&nbsp;Kirti Mishra ,&nbsp;Urvashi Sen ,&nbsp;Samarjeet Singh Siwal","doi":"10.1016/j.mtcata.2025.100124","DOIUrl":"10.1016/j.mtcata.2025.100124","url":null,"abstract":"<div><div>Over the recent past, there has been exponential growth in the advancements of clean energy sources and fuel cell technologies. Fuel cells are the electrochemical devices that are able to convert chemical energy of a fuel into electrical energy. This paper studies the electrocatalytic activity of monometallic, bimetallic, and trimetallic catalysts in direct ethanol fuel cells (DEFCs). Monometallic catalysts, for example, platinum (Pt) and palladium (Pd), along with other transition metals, find application but have complications like poor tolerance to carbon monoxide (CO) and incomplete oxidation of ethanol. Furthermore, bimetallic catalysts, e.g., Pt-Ru and Pt-Sn, have shown significant advancements because of these synergistic enhancements, leading to improved performance, stability, and CO poisoning resistance. Another group of catalysts, trimetallic (e.g., Pt-Ru-Sn), have both high efficiency and long-lasting capabilities, making them stand out as applicable in most DEFC practical scenarios. This research proves the advantage of multi-metallic catalysts in developing the DEFC technology while solving both major factors of catalyst deterioration and their price.</div></div>","PeriodicalId":100892,"journal":{"name":"Materials Today Catalysis","volume":"11 ","pages":"Article 100124"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on the hydrogen storage performance mechanism of MgH2 co-modified by rare earth hydride and high entropy hydrogen storage alloy based on in-situ differentiation 基于原位分异的稀土氢化物与高熵储氢合金共改性MgH2储氢性能机理研究
Materials Today Catalysis Pub Date : 2025-12-01 Epub Date: 2025-11-25 DOI: 10.1016/j.mtcata.2025.100130
Haoyuan Zheng , Shuzhong Wang , Chen Jin , Hang Che , Yuqin Zheng , Shixuan He , Haizhen Liu , Lingchao Zhang , Xinhua Wang
{"title":"Study on the hydrogen storage performance mechanism of MgH2 co-modified by rare earth hydride and high entropy hydrogen storage alloy based on in-situ differentiation","authors":"Haoyuan Zheng ,&nbsp;Shuzhong Wang ,&nbsp;Chen Jin ,&nbsp;Hang Che ,&nbsp;Yuqin Zheng ,&nbsp;Shixuan He ,&nbsp;Haizhen Liu ,&nbsp;Lingchao Zhang ,&nbsp;Xinhua Wang","doi":"10.1016/j.mtcata.2025.100130","DOIUrl":"10.1016/j.mtcata.2025.100130","url":null,"abstract":"<div><div>Owing to its high hydrogen storage capacity (7.6 wt%), MgH<sub>2</sub> is regarded as a highly promising solid-state hydrogen storage material. Nonetheless, its commercialization is constrained by high thermodynamic stability and sluggish hydrogen sorption kinetics. Thus, catalyst introduction is essential to enhance MgH<sub>2</sub>’s hydrogen storage performance. This study designed and synthesized a hydrogen storage high-entropy alloy, TiVCrZrNbCe. Upon doping with Ce to enhance activation, the alloy was combined with MgH<sub>2</sub> to fabricate a composite hydrogen storage system, thereby boosting the overall hydrogen storage properties of MgH<sub>2</sub>. Results indicate that the Ce-doped alloy eliminates the initial long hydrogen absorption induction period and exhibits rapid hydrogen absorption capability. The optimal MgH<sub>2</sub>/10 wt% HEA composite for hydrogen storage incorporates a Ce-doped alloy and MgH<sub>2</sub>. MgH<sub>2</sub>/10 wt% HEA shows initial/peak dehydrogenation temperatures of 205/270 °C, releases 6.05 wt% hydrogen, and enables rapid hydrogen absorption at room temperature. The hydrogen sorption activation energies are reduced to 40.8/76.8 kJ mol<sup>−1</sup>, and the capacity maintains well over ten cycles. Microstructure and mechanism analyses reveal that during ball milling of the MgH<sub>2</sub>-alloy, the Ce element in the alloy will interact with MgH<sub>2</sub> to partially absorb hydrogen to form CeH<sub>2.51</sub> in situ and generate a hydride FCC-MH phase. During hydrogen absorption/desorption, CeH<sub>2.51</sub> and the alloy serve as nucleation sites for MgH<sub>2</sub>, effectively promoting its hydrogenation/dehydrogenation reactions and exerting a “hydrogen overflow” effect. Additionally, the alloy’s self hydrogen absorption/desorption drives MgH<sub>2</sub>’s hydrogenation/dehydrogenation, functioning as a “hydrogen pump”. The hydrogen absorption/desorption properties of MgH<sub>2</sub> were notably optimized via the synergistic catalysis of CeH<sub>2.51</sub> and the alloy. This work offers novel insights for designing and catalytically modifying new MgH<sub>2</sub> catalysts.</div></div>","PeriodicalId":100892,"journal":{"name":"Materials Today Catalysis","volume":"11 ","pages":"Article 100130"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145623527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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