Pd-catalyzed asymmetric C–H functionalization is a privileged method for the synthesis of planar chiral ferrocenes. Previous examples under this category virtually rely on a preinstalled strong directing group. The transient directing strategy has witnessed considerable success in recent years. However, only limited examples have been reported for the synthesis of planar chiral ferrocenes. Herein, we report an asymmetric C–H alkenylation of ferrocenes with an array of electron-deficient olefins under Pd catalysis with l-tert-leucine as the transient-directing auxiliary. This reaction exhibits a wide substrate scope, and the target planar chiral ferrocenes are prepared in good yields (up to 85%) with exceptional enantioselectivity (up to >99% ee). Comprehensive mechanistic studies suggest that the storage of ring strain in a seven-membered palladacycle after C–H activation is the key to the success of our reaction design. It guarantees the migratory insertion as a kinetically feasible step that occurs in a strain-releasing manner.
{"title":"Accessing planar chiral ferrocenes via transient directing group-enabled C–H alkenylation under Pd(II) catalysis","authors":"Fangnuo Zhao, Yanze Li, Zhongkang Dong, Chen-Xu Liu, Quannan Wang, Qing Gu, Yu-Cheng Gu, Chao Zheng, Shu-Li You","doi":"10.1016/j.checat.2025.101485","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101485","url":null,"abstract":"Pd-catalyzed asymmetric C–H functionalization is a privileged method for the synthesis of planar chiral ferrocenes. Previous examples under this category virtually rely on a preinstalled strong directing group. The transient directing strategy has witnessed considerable success in recent years. However, only limited examples have been reported for the synthesis of planar chiral ferrocenes. Herein, we report an asymmetric C–H alkenylation of ferrocenes with an array of electron-deficient olefins under Pd catalysis with <span>l</span>-<em>tert</em>-leucine as the transient-directing auxiliary. This reaction exhibits a wide substrate scope, and the target planar chiral ferrocenes are prepared in good yields (up to 85%) with exceptional enantioselectivity (up to >99% ee). Comprehensive mechanistic studies suggest that the storage of ring strain in a seven-membered palladacycle after C–H activation is the key to the success of our reaction design. It guarantees the migratory insertion as a kinetically feasible step that occurs in a strain-releasing manner.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"19 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144826034","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}
Pub Date : 2025-08-13DOI: 10.1016/j.checat.2025.101487
Xiaoyu Xie, Ziyu Huo, Erin R. Crater, Robert B. Moore, Rong Tong
Poly(lactic acid) (PLA) is a leading degradable and biocompatible polymer in the plastics industry. Stereocomplex PLA—a mixture of poly(l-lactic acid) and poly(d-lactic acid)—exhibits enhanced mechanical toughness and an elevated melting temperature compared to other PLA stereoisomers. However, the lack of highly enantioselective catalysts has prevented the single-step production of stereocomplex PLA from inexpensive racemic lactide. This work presents the discovery of chiral aluminum catalysts that are highly active for enantioselective lactide polymerization. Using a mixture of chiral catalysts with opposite enantioselectivities allowed for the single-step production of highly isotactic stereocomplex PLA from racemic lactide. The obtained stereocomplex PLA was tougher and more ductile than poly(l-lactic acid), stereoblock PLA, and even conventionally blended stereocomplex PLA. Computational studies revealed that the enantiocontrol exerted by the bimetallic aluminum complexes arises from dispersion interactions between the ligand and lactide within the catalyst cleft.
{"title":"Enantioselective polymerization of racemic lactide for stereocomplex poly(lactic acid)","authors":"Xiaoyu Xie, Ziyu Huo, Erin R. Crater, Robert B. Moore, Rong Tong","doi":"10.1016/j.checat.2025.101487","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101487","url":null,"abstract":"Poly(lactic acid) (PLA) is a leading degradable and biocompatible polymer in the plastics industry. Stereocomplex PLA—a mixture of poly(<span>l</span>-lactic acid) and poly(<span>d</span>-lactic acid)—exhibits enhanced mechanical toughness and an elevated melting temperature compared to other PLA stereoisomers. However, the lack of highly enantioselective catalysts has prevented the single-step production of stereocomplex PLA from inexpensive racemic lactide. This work presents the discovery of chiral aluminum catalysts that are highly active for enantioselective lactide polymerization. Using a mixture of chiral catalysts with opposite enantioselectivities allowed for the single-step production of highly isotactic stereocomplex PLA from racemic lactide. The obtained stereocomplex PLA was tougher and more ductile than poly(<span>l</span>-lactic acid), stereoblock PLA, and even conventionally blended stereocomplex PLA. Computational studies revealed that the enantiocontrol exerted by the bimetallic aluminum complexes arises from dispersion interactions between the ligand and lactide within the catalyst cleft.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"79 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144826029","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}
Pub Date : 2025-08-08DOI: 10.1016/j.checat.2025.101465
Rundong Zhao, Qiuyu Yan, Hao Lin, Lihong Yu, Le Liu, Jingyu Xi
The electrochemical nitrate reduction reaction (NO3RR) presents a sustainable pathway to simultaneously address environmental nitrate (NO3−) pollution and decarbonize ammonia (NH3) production. While traditional constant-potential electrocatalysis for NO3RR has been widely studied, it suffers from inherent limitations, including competing hydrogen evolution, intermediate desorption, mass transfer bottlenecks, etc. In response, pulsed electrocatalysis, as an easily operable method, enables the regulation of reaction pathways by periodically varying applied potentials and can effectively overcome the limitations of constant-potential catalysis. However, research on pulsed catalysis in NO3RR remains fragmented, lacking systematic categorization. Consequently, this review provides a comprehensive overview of pulsed NO3RR systems, encompassing fundamental testing methodologies, catalytic mechanisms, device configurations, in situ characterization techniques, and merits of pulsed strategy. Furthermore, the analysis outlines essential criteria for catalyst design to maximize the potential of pulsed strategy and emphasizes the need for enhanced research and refined investigations in existing pulsed NO3RR implementations.
{"title":"Dynamic pulse electrocatalysis for efficient and directed reduction of nitrate to ammonia","authors":"Rundong Zhao, Qiuyu Yan, Hao Lin, Lihong Yu, Le Liu, Jingyu Xi","doi":"10.1016/j.checat.2025.101465","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101465","url":null,"abstract":"The electrochemical nitrate reduction reaction (NO<sub>3</sub>RR) presents a sustainable pathway to simultaneously address environmental nitrate (NO<sub>3</sub><sup>−</sup>) pollution and decarbonize ammonia (NH<sub>3</sub>) production. While traditional constant-potential electrocatalysis for NO<sub>3</sub>RR has been widely studied, it suffers from inherent limitations, including competing hydrogen evolution, intermediate desorption, mass transfer bottlenecks, etc. In response, pulsed electrocatalysis, as an easily operable method, enables the regulation of reaction pathways by periodically varying applied potentials and can effectively overcome the limitations of constant-potential catalysis. However, research on pulsed catalysis in NO<sub>3</sub>RR remains fragmented, lacking systematic categorization. Consequently, this review provides a comprehensive overview of pulsed NO<sub>3</sub>RR systems, encompassing fundamental testing methodologies, catalytic mechanisms, device configurations, <em>in situ</em> characterization techniques, and merits of pulsed strategy. Furthermore, the analysis outlines essential criteria for catalyst design to maximize the potential of pulsed strategy and emphasizes the need for enhanced research and refined investigations in existing pulsed NO<sub>3</sub>RR implementations.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"95 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144797549","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}
Pub Date : 2025-08-08DOI: 10.1016/j.checat.2025.101484
Bin Lei, Xiao Liu, Bo Li, Haolin Lu, Xing-Yue He, Xiaowen Wang, Guankui Long, Jian-Gong Ma, Peng Cheng
Electrochemical nitrate reduction to ammonia (NO3RR) is the most promising pathway for the value-added conversion of nitrate. However, the NO3RR process involves the transfer of multi-electrons and protons and hence suffers from slow kinetics, leading to an urgent need to develop high-performance NO3RR catalysts. Here, we prepare ultrafine Cu2O particles in situ generated and encapsulated in metal-organic frameworks (MOFs) containing coordination-unsaturated Cu2+ nodes by the controlled self-sacrifice of a selected part of the framework. The composite catalyst achieves the impressive catalytic performance for NO3RR, with an NH3 yield rate of 6.35 mmol h−1 mgcat−1 and corresponding Faraday efficiency of 98.6%. Density functional theory (DFT) calculations demonstrate that the synergistic effect between unsaturated Cu2+ nodes and nanoparticles markedly decreases the potential energy of all intermediates, thereby facilitating an efficient conversion of nitrate to ammonia.
{"title":"Controllable partial self-sacrifice of metal-organic frameworks for enhancing nitrate electroreduction to ammonia","authors":"Bin Lei, Xiao Liu, Bo Li, Haolin Lu, Xing-Yue He, Xiaowen Wang, Guankui Long, Jian-Gong Ma, Peng Cheng","doi":"10.1016/j.checat.2025.101484","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101484","url":null,"abstract":"Electrochemical nitrate reduction to ammonia (NO<sub>3</sub>RR) is the most promising pathway for the value-added conversion of nitrate. However, the NO<sub>3</sub>RR process involves the transfer of multi-electrons and protons and hence suffers from slow kinetics, leading to an urgent need to develop high-performance NO<sub>3</sub>RR catalysts. Here, we prepare ultrafine Cu<sub>2</sub>O particles <em>in situ</em> generated and encapsulated in metal-organic frameworks (MOFs) containing coordination-unsaturated Cu<sup>2+</sup> nodes by the controlled self-sacrifice of a selected part of the framework. The composite catalyst achieves the impressive catalytic performance for NO<sub>3</sub>RR, with an NH<sub>3</sub> yield rate of 6.35 mmol h<sup>−1</sup> mg<sub>cat</sub><sup>−1</sup> and corresponding Faraday efficiency of 98.6%. Density functional theory (DFT) calculations demonstrate that the synergistic effect between unsaturated Cu<sup>2+</sup> nodes and nanoparticles markedly decreases the potential energy of all intermediates, thereby facilitating an efficient conversion of nitrate to ammonia.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"35 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144797548","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}
Pub Date : 2025-08-04DOI: 10.1016/j.checat.2025.101464
Manjeet Chhetri, Prashant Sharan, Daniel Leonard, Sandip Maurya, Cortney Kreller, Yu Seung Kim
The large-scale adoption of hydrogen energy faces significant challenges in distribution and delivery. Hydrogen-enriched natural gas (HENG) pipelines offer a cost-effective alternative. This study introduces unitized bifunctional electrochemical hydrogen pumps (UBEHPs) capable of both extracting hydrogen and generating electricity from gas mixtures with as little as 10 vol % hydrogen. Using a poly(phenylene)-based ion-pair membrane, a protonated phosphonic acid ionomer, and a commercial carbon-supported platinum catalyst, the UBEHPs achieve a bifunctional efficiency of 56% along with excellent cycling stability. A techno-economic analysis shows an 8% cost advantage over conventional systems that use separate hydrogen pumps and fuel cells. Furthermore, integrating UBEHPs with HENG pipelines can reduce hydrogen refueling station costs by 43% compared to liquid hydrogen delivery, offering a highly efficient and economically viable solution for hydrogen distribution.
{"title":"Unitized bifunctional electrochemical hydrogen pumps for hydrogen-enriched natural gas","authors":"Manjeet Chhetri, Prashant Sharan, Daniel Leonard, Sandip Maurya, Cortney Kreller, Yu Seung Kim","doi":"10.1016/j.checat.2025.101464","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101464","url":null,"abstract":"The large-scale adoption of hydrogen energy faces significant challenges in distribution and delivery. Hydrogen-enriched natural gas (HENG) pipelines offer a cost-effective alternative. This study introduces unitized bifunctional electrochemical hydrogen pumps (UBEHPs) capable of both extracting hydrogen and generating electricity from gas mixtures with as little as 10 vol % hydrogen. Using a poly(phenylene)-based ion-pair membrane, a protonated phosphonic acid ionomer, and a commercial carbon-supported platinum catalyst, the UBEHPs achieve a bifunctional efficiency of 56% along with excellent cycling stability. A techno-economic analysis shows an 8% cost advantage over conventional systems that use separate hydrogen pumps and fuel cells. Furthermore, integrating UBEHPs with HENG pipelines can reduce hydrogen refueling station costs by 43% compared to liquid hydrogen delivery, offering a highly efficient and economically viable solution for hydrogen distribution.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"15 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144770085","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}
Pub Date : 2025-08-04DOI: 10.1016/j.checat.2025.101462
Wenqiang Yang, Bhawana Rayamajhi, Mubarak Bello, Andreas Heyden
Dehydrogenation of methylcyclohexane (MCH) to toluene poses challenges in liquid organic hydrogen carrier (LOHC) systems. This study employs DFT-based microkinetic modeling to investigate the MCH dehydrogenation on Ni(111) and Ni(211) surfaces. At low conversion, methylcyclohexene is the primary product, with toluene only being produced on the Ni(211) surface (∼50% selectivity). At higher conversion, close to 100% selectivity to toluene is observed over both surfaces, highlighting the importance of methylcyclohexene re-adsorption and subsequent dehydrogenation. Ni(211) exhibits a rate approximately three orders of magnitude higher than Ni(111) but also suffers from stronger binding of toluene and coke precursors (C and CH), leading to site blocking and potential coke formation. Coke precursors are thermodynamically unstable on Ni(111). These insights suggest a dual strategy for optimizing Ni-based catalysts for LOHC applications: selectively poisoning undercoordinated edge sites to mitigate deactivation and enhancing the close-packed Ni(111) activity through doping or alloying.
{"title":"Surface structure effects on the methylcyclohexane dehydrogenation over Ni catalysts predicted by density functional theory","authors":"Wenqiang Yang, Bhawana Rayamajhi, Mubarak Bello, Andreas Heyden","doi":"10.1016/j.checat.2025.101462","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101462","url":null,"abstract":"Dehydrogenation of methylcyclohexane (MCH) to toluene poses challenges in liquid organic hydrogen carrier (LOHC) systems. This study employs DFT-based microkinetic modeling to investigate the MCH dehydrogenation on Ni(111) and Ni(211) surfaces. At low conversion, methylcyclohexene is the primary product, with toluene only being produced on the Ni(211) surface (∼50% selectivity). At higher conversion, close to 100% selectivity to toluene is observed over both surfaces, highlighting the importance of methylcyclohexene re-adsorption and subsequent dehydrogenation. Ni(211) exhibits a rate approximately three orders of magnitude higher than Ni(111) but also suffers from stronger binding of toluene and coke precursors (C and CH), leading to site blocking and potential coke formation. Coke precursors are thermodynamically unstable on Ni(111). These insights suggest a dual strategy for optimizing Ni-based catalysts for LOHC applications: selectively poisoning undercoordinated edge sites to mitigate deactivation and enhancing the close-packed Ni(111) activity through doping or alloying.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"30 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144770084","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}
Pub Date : 2025-07-28DOI: 10.1016/j.checat.2025.101463
Rongfu Hong, Lixin Xing, Fusheng Huang, Yuanmei Chen, Pinqing Li, Xiaoyi Fang, Mingquan Zhao, Hong Ren, Zhun Dong, Yunsong Yang, Lei Du, Siyu Ye
Membrane electrode assemblies (MEAs) are critical for hydrogen energy technologies, such as fuel cells and electrolyzers, yet their industrialization remains complex. Key challenges include the high cost of platinum-group metal (PGM) catalysts, performance gaps between lab-scale and industrial devices due to disparities in transport dynamics, and the need to optimize mass transport at triple-phase boundaries. Manufacturing hurdles involve unstable catalyst inks, difficulties with precision coating, and thermal and mechanical instability during hot pressing. PGM scarcity and weak links between academia and industry further impede progress. To cut costs and close performance gaps, the field can pivot toward non-precious-metal catalysts, establish closed-loop PGM recycling, and coordinate cross-disciplinary process optimization. Concurrently, it is essential to acknowledge the shifting competitive dynamics of MEAs in the energy market and strategically emphasize their strengths, such as fuel cells’ advantage over lithium-ion batteries in heavy-duty transport applications, to enhance market penetration and accelerate scalable deployment.
{"title":"Scaling up membrane electrode assemblies for industrial applications","authors":"Rongfu Hong, Lixin Xing, Fusheng Huang, Yuanmei Chen, Pinqing Li, Xiaoyi Fang, Mingquan Zhao, Hong Ren, Zhun Dong, Yunsong Yang, Lei Du, Siyu Ye","doi":"10.1016/j.checat.2025.101463","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101463","url":null,"abstract":"Membrane electrode assemblies (MEAs) are critical for hydrogen energy technologies, such as fuel cells and electrolyzers, yet their industrialization remains complex. Key challenges include the high cost of platinum-group metal (PGM) catalysts, performance gaps between lab-scale and industrial devices due to disparities in transport dynamics, and the need to optimize mass transport at triple-phase boundaries. Manufacturing hurdles involve unstable catalyst inks, difficulties with precision coating, and thermal and mechanical instability during hot pressing. PGM scarcity and weak links between academia and industry further impede progress. To cut costs and close performance gaps, the field can pivot toward non-precious-metal catalysts, establish closed-loop PGM recycling, and coordinate cross-disciplinary process optimization. Concurrently, it is essential to acknowledge the shifting competitive dynamics of MEAs in the energy market and strategically emphasize their strengths, such as fuel cells’ advantage over lithium-ion batteries in heavy-duty transport applications, to enhance market penetration and accelerate scalable deployment.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"68 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144715650","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}
Pub Date : 2025-07-23DOI: 10.1016/j.checat.2025.101458
Xingyu Wang, Yu Mao, Ziyun Wang
Searching for a transition state (TS) is crucial in understanding chemical reaction mechanisms and kinetics. While traditional computational methods, including single-ended and double-ended approaches, have provided valuable insights, they face significant computational cost and scalability limitations. This review comprehensively examines conventional computational approaches and the rapidly emerging machine learning (ML) methods for TS searching, highlighting the significant acceleration in ML method development since 2020. We first analyze traditional computational methods, discussing their theoretical foundations and practical limitations. We then systematically review available TS datasets that enable ML applications. The review explores the evolution of ML approaches from traditional methods like random forest and kernel ridge regression to advanced architectures such as graph neural networks, tensor field networks, and generative models. We examine current challenges, including data scarcity, computational constraints, and validation standards, while highlighting promising future directions. This comprehensive analysis provides insights into the field’s current state and outlines potential pathways for advancing TS searching methodologies.
{"title":"Machine learning approaches for transition state prediction","authors":"Xingyu Wang, Yu Mao, Ziyun Wang","doi":"10.1016/j.checat.2025.101458","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101458","url":null,"abstract":"Searching for a transition state (TS) is crucial in understanding chemical reaction mechanisms and kinetics. While traditional computational methods, including single-ended and double-ended approaches, have provided valuable insights, they face significant computational cost and scalability limitations. This review comprehensively examines conventional computational approaches and the rapidly emerging machine learning (ML) methods for TS searching, highlighting the significant acceleration in ML method development since 2020. We first analyze traditional computational methods, discussing their theoretical foundations and practical limitations. We then systematically review available TS datasets that enable ML applications. The review explores the evolution of ML approaches from traditional methods like random forest and kernel ridge regression to advanced architectures such as graph neural networks, tensor field networks, and generative models. We examine current challenges, including data scarcity, computational constraints, and validation standards, while highlighting promising future directions. This comprehensive analysis provides insights into the field’s current state and outlines potential pathways for advancing TS searching methodologies.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"32 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144684919","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}
Pub Date : 2025-07-17DOI: 10.1016/j.checat.2025.101461
Cole W. Hullfish, Michele L. Sarazen
In a recent Science publication, Mlekodaj, van Bokhoven, and colleagues use an anomalous X-ray powder diffraction method to quantitatively determine distributions of aluminum at specific T-sites in MFI zeolite, which has implications for advancing both the understanding of site-dependent kinetic phenomena and zeolite synthesis with deliberate aluminum siting.
{"title":"Toward revealing T-site distributions and resultant catalytic implications in MFI zeolites","authors":"Cole W. Hullfish, Michele L. Sarazen","doi":"10.1016/j.checat.2025.101461","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101461","url":null,"abstract":"In a recent <em>Science</em> publication, Mlekodaj, van Bokhoven, and colleagues use an anomalous X-ray powder diffraction method to quantitatively determine distributions of aluminum at specific T-sites in MFI zeolite, which has implications for advancing both the understanding of site-dependent kinetic phenomena and zeolite synthesis with deliberate aluminum siting.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"37 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144645683","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}
Pub Date : 2025-07-17DOI: 10.1016/j.checat.2025.101439
Tao Li, Haohua Huo
The field of radical chemistry has long faced a fundamental limitation: the instantaneous racemization of free radicals. Reporting in the June 5 issue of Nature, Baran and co-workers have now achieved stereoretentive radical cross-coupling through a unique mechanistic design, opening new synthetic pathways for preparing enantioenriched compounds.
{"title":"Radicals retain their memory in cross-coupling","authors":"Tao Li, Haohua Huo","doi":"10.1016/j.checat.2025.101439","DOIUrl":"https://doi.org/10.1016/j.checat.2025.101439","url":null,"abstract":"The field of radical chemistry has long faced a fundamental limitation: the instantaneous racemization of free radicals. Reporting in the June 5 issue of <em>Nature</em>, Baran and co-workers have now achieved stereoretentive radical cross-coupling through a unique mechanistic design, opening new synthetic pathways for preparing enantioenriched compounds.","PeriodicalId":53121,"journal":{"name":"Chem Catalysis","volume":"96 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144645622","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}
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