ChemCatChem最新文献

{"title":"In-Situ Engineering of MWW Zeolite to ITQ-2-M Composites for Conversion of Biomass Derived Molecules","authors":"Naroth P. Nimisha,&nbsp;Avaronnan Vivekanand,&nbsp;Adarsh Sahu,&nbsp;Marimuthu Manikandan,&nbsp;Thirumalaiswamy Raja,&nbsp;Ayyamperumal Sakthivel","doi":"10.1002/cctc.71042","DOIUrl":"https://doi.org/10.1002/cctc.71042","url":null,"abstract":"<div>\u0000 \u0000 <p>Transition metal oxy-hydroxide (Ni, Fe, Co, Mo, and V)-decorated ITQ-2 composites were synthesized in-situ via controlled delamination of layered MCM-22(P) under optimized pH, generating highly accessible active sites with minimal diffusion limitations for biomass -derived molecules. The in-situ delamination strategy avoids multistep post-synthetic incorporation, ensuring maximum metal loading, strong anchoring, and structural integrity. Structural characterization confirmed nanosheet formation through the disappearance of the (002) interlayer reflection and broadening of intralayer reflections (220), (310)) in the X-ray diffraction (XRD) pattern and an increase in external surface area (90 to ∼300 m²/g) and mesopore volume (∼0.02 to 0.40 cm³/g) from N₂ sorption. Field emission scanning electron microscopy (FE-SEM) revealed a morphological transformation from stacked layers to dispersed platelets. The TEM/HR-TEM showed uniform slit like layers (∼2.5 nm) decorated with transition metal species (1.5–4 nm). XPS studies established the existence of Ni, Fe, and Co in +2 oxidation states, whereas V and Mo existed as V⁵⁺ and Mo⁶⁺ species, respectively. Catalytic studies demonstrated bifunctionality: ITQ-2-Ni-4 enabled complete hydrogenation of levulinic acid to γ-valerolactone (97% selectivity) via enhanced H₂ spillover and uniform Ni dispersion. ITQ-2-V-8 and ITQ-2-Fe-2 achieved &gt; 85% conversion in <i>iso</i>-eugenol oxidation to vanillin through redox cycling and peroxo-species formation (&gt; 90% selectivity). Though promising in activity, performance could be improved under continuous-flow vapor-phase conditions to mitigate coke deposition.</p>\u0000 </div>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 17","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942369","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}

{"title":"Confinement of Palladium Within Silicalite-1 for Chemoselective and Enantioselective Hydrogenation of Acetophenone","authors":"Jingjing Bai,&nbsp;Jinwen Zhang,&nbsp;Yuanhang Ren,&nbsp;Jianyu Chen,&nbsp;Bin Yue,&nbsp;Heyong He,&nbsp;Xueying Chen","doi":"10.1002/cctc.71048","DOIUrl":"https://doi.org/10.1002/cctc.71048","url":null,"abstract":"<div>\u0000 \u0000 <p>Pd was successfully encapsulated inside Silicalite-1 (S-1) using a ligand-assisted one-pot hydrothermal strategy. AC-TEM and XAFS characterizations confirmed that Pd species were confined in S-1 as highly dispersed metallic clusters with the size &lt; 0.9 nm. The confinement effect of S-1 not only enhances the activity and C═O selectivity in the chemoselective hydrogenation of acetophenone, but also effectively inhibits Pd agglomeration and leaching. With L-proline serving as the chiral modifier in the enantioselective acetophenone hydrogenation, the Pd@S-1 catalyst exhibited a reaction rate and turnover frequency (TOF) of 60.6 mmol·h⁻¹·g_Pd⁻¹ and 14.4 h⁻¹, which are 36 and 29 times higher than those of the impregnated Pd/S-1 counterpart, respectively. The confinement effect of S-1 prevents excessive coverage of metal active sites by the chiral modifier, thereby enhancing both activity and enantioselectivity. A size-sieving effect was further demonstrated using chiral modifiers and acetophenone derivatives of different sizes. To validate the critical role of confinement, Pd@S-1@S-1 sample (core-shell) and hollow-Pd@S-1@S-1 sample (hollow-shell structure) were constructed by epitaxial growth of S-1 shell on the newly prepared or reduced Pd@S-1, respectively. As compared to Pd@S-1@S-1, the hollow-Pd@S-1@S-1 suffered from severe Pd aggregation and a sharp loss of activity due to the lack of pore confinement.</p>\u0000 </div>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 17","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942258","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}

{"title":"Iron-Incorporated Cobalt Phosphate as an Efficient Electrocatalyst for Water Oxidation","authors":"Mingzhu Zhang,&nbsp;Xiaohan Liu,&nbsp;Shujiao Yang,&nbsp;Ting Wang,&nbsp;Xueqing Gao,&nbsp;Wei Zhang","doi":"10.1002/cctc.71040","DOIUrl":"https://doi.org/10.1002/cctc.71040","url":null,"abstract":"<div>\u0000 \u0000 <p>The oxygen evolution reaction (OER) leads to intrinsically sluggish kinetics, requiring a high overpotential and significantly limiting the overall water splitting energy conversion efficiency. Co-based catalysts have attracted considerable interest for the OER. Numerous studies have shown that trace Fe incorporation into Co-based catalysts enhances electrical conductivity and increases active site density, thereby improving OER performance. However, Fe-doped cobalt phosphates continue to encounter challenges, including intricate synthesis procedures, inadequate performance, and unclear mechanistic insights regarding the function of Fe. Herein, Fe-incorporated Co₃(PO₄)₂·8H₂O (FCPO) was successfully synthesized via a simple hydrothermal method. Notably, compared with Co-based phosphate electrocatalysts, the Fe incorporation modulates the electronic structure surrounding cobalt centers, facilitates cobalt valence transitions during OER. Besides, the exact location of Fe incorporation is determined through x-ray absorption and clarified the role of Fe in cobalt phosphate catalyst for OER. The material displays outstanding OER performance in 1.0 M KOH, requiring a low overpotential of 233 mV to achieve 100 mA cm⁻².</p>\u0000 </div>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 17","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148856713","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}

{"title":"Nanosecond Pulsed Microwave Plasma Torch for Continuous In-Line H2O2 Supply: A Path to Stable and Scalable Plasma-Driven Biocatalysis","authors":"Tim Dirks,&nbsp;Mery Sheryll Hernandez Maya,&nbsp;Davina Stoesser,&nbsp;Sophia Tille,&nbsp;Frank Hollmann,&nbsp;Alexander Navarrete Munoz","doi":"10.1002/cctc.71023","DOIUrl":"https://doi.org/10.1002/cctc.71023","url":null,"abstract":"<p>Plasma-driven H₂O₂ generation offers a potential sustainable route for biotransformations, but its application is hindered by challenges such as insufficient H₂O₂ production and enzyme degradation. This study establishes plasma-driven biocatalysis using a nanosecond pulsed microwave plasma torch (npMWPT), highlighting its unique advantages over previously applied sources. npMWPT-driven biocatalysis addresses insufficient plasma-generated H₂O₂ production by enabling continuous H₂O₂ supply while decoupling plasma treatment from enzymatic reactions. We investigated the effectiveness of npMWPT-driven biocatalysis using both immobilized and free recombinant unspecific peroxygenase from <i>Agrocybe aegerita</i> (r<i>Aae</i>UPO) to convert ABTS and ethylbenzene. For ABTS, immobilized r<i>Aae</i>UPO demonstrated reusability across five reaction cycles (turnover number TON 44,637 µmol_ABTS* µmoL⁻¹_r<i>_Aae</i>_UPO). The decoupling of npMWPT-based H₂O₂ production resulted in a TON of 66,495 µmol₍<i>_R</i>_)-1-PhOl µmoL⁻¹_r<i>_Aae</i>_UPO with ethylbenzene for free r<i>Aae</i>UPO, outperforming the use of immobilized r<i>Aae</i>UPO for the first time in plasma-driven biocatalysis (TTN 22,116). Mixing optimization improved conversion rates, while observed enzyme inactivation under continuous operation revealed that H₂O₂ generation exceeded enzymatic consumption under the investigated conditions. The present study identifies supply-demand matching as the key optimization target for npMWPT-driven biocatalysis. This proof-of-principle work demonstrates the successful integration of spatially decoupled npMWPT H₂O₂ generation with peroxygenase-based biocatalysis and provides a basis for future process-controlled plasma-driven biocatalysis.</p>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 17","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.71023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148856729","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}

{"title":"Metal-Free Decarboxylative Allylation of N-Protected Amino Acids and Carboxylic Acids via Thioxanthone Photocatalysis","authors":"Areti N. Karamitrou,&nbsp;Olga G. Mountanea,&nbsp;Manos V. G. Lantzanakis,&nbsp;Christoforos G. Kokotos","doi":"10.1002/cctc.71041","DOIUrl":"https://doi.org/10.1002/cctc.71041","url":null,"abstract":"<p>In response to the growing demand for efficient synthetic methodologies, we report herein a practical and cost-effective photochemical decarboxylative allylation protocol, utilizing thioxanthone as an affordable organic photocatalyst under blue-LED irradiation. This metal-free approach enables the direct coupling of various carboxylic acids and <i>N</i>-protected amino acids, which represent abundant and widely used feedstocks, with Morita–Baylis–Hillman derivatives. The reaction proceeds under mild conditions and has been successfully applied to a broad substrate scope, demonstrating the method's versatility and ability to produce complex multifunctional molecules.</p>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 17","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.71041","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148856732","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}

{"title":"Front Cover: Vacuum-Induced Ru Anchoring on MCM-41 With Alkali Promotion for Robust Ammonia Decomposition","authors":"Seungmok Han,&nbsp;Gahong Kim,&nbsp;Junyoung Cha,&nbsp;ByeongJo Shim,&nbsp;Joon Seong Kim,&nbsp;Hyangsoo Jeong,&nbsp;Yongmin Kim,&nbsp;Hyuntae Sohn,&nbsp;Chang Won Yoon","doi":"10.1002/cctc.71021","DOIUrl":"https://doi.org/10.1002/cctc.71021","url":null,"abstract":"<p><b>The Front Cover</b> illustrates NH₃ decomposition to N₂ and H₂ over Ru nanoparticles anchored within the pores of Cs-exchanged MCM-41. Vacuum-induced dehydroxylation creates interfacial anchoring sites that stabilize highly dispersed Ru nanoparticles, while Cs-induced charge transfer increases the electron density of Ru. The resulting Ru/Cs-MCM-V catalyst sustains 85% NH₃ conversion at 500°C under a high WHSV of 60 000 mLNH₃ gcat⁻¹ h⁻¹ for over 1000 h. More information can be found in the Research Article by H. Sohn, C. W. Yoon and co-workers (DOI: 10.1002/cctc.70942).\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 17","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.71021","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148856733","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}

{"title":"Feature Cover: Hydrogenation of CO2 by an Anionic Tripodal Ruthenium Pincer Complex","authors":"Limor Herman,&nbsp;Stanislav Gelman-Tropp,&nbsp;Luigi Vaccaro,&nbsp;Dmitri Gelman","doi":"10.1002/cctc.71022","DOIUrl":"https://doi.org/10.1002/cctc.71022","url":null,"abstract":"<p><b>The Cover Feature</b> portrays the ruthenium pincer catalyst as a deep-sea anglerfish that captures inert CO₂ molecules with its highly reactive Ru–H bond. The illustration highlights the key design concept: coordination of the negatively charged pendant side arm increases the hydricity of the metal hydride, enabling efficient catalytic CO₂ hydrogenation. More information can be found in the Research Article by L. Vaccaro, D. Gelman, and co-workers (DOI: 10.1002/cctc.70949).\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 17","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.71022","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148856734","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}

{"title":"From Surface Steps to Rational Strategies: A Critical Review of Catalyst Design for Carbon Dioxide Dry Reforming of Methane","authors":"Zihao Teng,&nbsp;Lizhuo Wang,&nbsp;Jun Huang","doi":"10.1002/cctc.71033","DOIUrl":"https://doi.org/10.1002/cctc.71033","url":null,"abstract":"<p>The carbon dioxide dry reforming of methane (DRM) is a promising technology for achieving carbon neutrality via the simultaneous conversion of two greenhouse gases (CH₄ and CO₂) into high-value syngas. However, its industrial implementation is severely hindered by its highly endothermic nature and the rapid catalyst deactivation originating from metal sintering and carbon deposition. This review provides a comprehensive analysis of DRM technology, linking fundamental surface steps to advanced catalyst design strategies. It begins by clarifying the inherent thermodynamic and kinetic constraints, detailing the reactant activation, and uncovering the essence of catalyst deactivation. The design strategies for synthesizing durable and cost-effective DRM catalysts are categorized into two dimensions: active site engineering (e.g., particle downsizing, bimetallic alloying, and promoter incorporation) and functional support modulation (e.g., acidity–basicity adjustment, oxygen vacancy generation, and multi-functional confinement). Finally, this review proposes a multi-dimensional roadmap for future commercialization. We emphasize the integration of data-driven machine learning (ML), energy-assisted catalysis, macroscopic process intensification, and techno-economic analyses. This holistic perspective aims to bridge the gap between laboratory-scale concepts and industrial feasibility, positioning DRM as a cornerstone technology of the sustainable chemical industry.</p>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 17","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.71033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148856761","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}

{"title":"Reaction-Field-Dependent Selective Ullmann Coupling Versus Hydrodebromination and Heck Reaction of Aryl Bromides","authors":"Hiroto Saga,&nbsp;Shiraki Ito,&nbsp;Ryosuke Shigeta,&nbsp;Aya Tazawa,&nbsp;Yasuhiro Uozumi,&nbsp;Yoshimasa Matsumura,&nbsp;Osamu Shimomura,&nbsp;Atsushi Ohtaka","doi":"10.1002/cctc.71037","DOIUrl":"https://doi.org/10.1002/cctc.71037","url":null,"abstract":"<div>\u0000 \u0000 <p>A novel chemoselective regulation was achieved through deliberate modulation of the reaction field. When Pd aggregates were employed in reactions with aryl bromides, Ullmann coupling occurring on the Pd surface proceeds selectively. In contrast, ppm-level Pd(OAc)₂ catalyzed hydrodebromination, which takes place in the homogeneous solution phase. Moreover, chemoselective discrimination between the Ullmann and Heck reactions was likewise realized through reaction-field control.</p>\u0000 </div>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 16","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148848795","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}

{"title":"Highly Efficient and Selective Hydrodeoxygenation of Sulfoxides to Sulfides and the Hydrogenation of Disulfides to Thiols With Nitrogen-Doped Molybdenum Disulfide Catalysts Under Mild Conditions","authors":"Chunjing Zhao,&nbsp;Yaqi Liu,&nbsp;Piaoyang Zhou,&nbsp;Kang Yang,&nbsp;Chao Xiang,&nbsp;Rizhi Chen,&nbsp;Jun Huang","doi":"10.1002/cctc.71031","DOIUrl":"https://doi.org/10.1002/cctc.71031","url":null,"abstract":"<div>\u0000 \u0000 <p>Selective activation of S═O and S─S bonds under mild conditions remains a fundamental challenge in sulfur chemistry. Herein, we report a nitrogen-doped molybdenum disulfide catalyst (N-MoS₂-9-500) synthesized via a ball-milling-assisted calcination method using trithiocyanuric acid as both sulfur and nitrogen sources. Comprehensive characterization by XRD, XPS, SEM, TEM, and Raman spectroscopy reveals that nitrogen doping induces abundant sulfur vacancies and expanded interlayer spacing, which are proposed to account for the active sites for H₂ activation and polar bond cleavage. The optimal catalyst exhibits high activity and selectivity for the hydrodeoxygenation (HDO) of a broad range of sulfoxides to the corresponding sulfides under mild conditions (60°C, 1.0 MPa H₂), and also shows good performance for the hydrogenation of various disulfides to thiols, with yields ranging from 97% to 99.9%. In addition, the catalyst exhibits stable catalytic performance and can be reused for at least five cycles without significant loss of activity in the HDO of methyl phenyl sulfoxide (MPSO) to methyl phenyl sulfide (MPS). This work provides a new non-precious metal catalytic platform for the sustainable and selective synthesis of sulfur-containing fine chemicals, highlighting the potential of defect-engineered MoS₂ catalysts in green catalysis.</p>\u0000 </div>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"18 16","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148848794","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}