Catalysis Today最新文献

{"title":"Tailor-made Al-containing mesostructured catalysts for BTXs production from biomass resources","authors":"Gabriel O. Ferrero ,&nbsp;Verónica R. Elías ,&nbsp;Madalina G. Idriceanu ,&nbsp;Griselda A. Eimer ,&nbsp;Marcelo E. Domine","doi":"10.1016/j.cattod.2025.115562","DOIUrl":"10.1016/j.cattod.2025.115562","url":null,"abstract":"<div><div>Benzene, toluene, and xylene (BTXs) are the major commodity chemicals serving a wide range of industries with large global economic impact and are currently obtained exclusively from petroleum feedstock. Alternative renewable sources from biomass are raised as a solution to satisfy the pressing needs for a fully sustainable bio-commodities industry. For this reason, the chemistry of materials has focused on the synthesis of catalysts that can transform biomass into renewable chemical compounds of interest. In this work, the SBA-15 material was modified with Al to incorporate a specific Br/Le acid sites ratio to make a low-cost tailor-made catalyst for the aromatization reaction of furanic dienes and dienophiles from renewable biomass sources. In order to correlate the catalytic activity of materials with their structure and nature, the solids were characterized by several techniques such as XRD, TEM, ICP, N₂ physisorption and FT-IR of adsorbed pyridine. The goal of this work was to maximize the production of p-xylene (PX) by fine-tuning the Al content in SBA-15 and optimizing the reaction conditions. The presence of Lewis (Le) and Brønsted (Br) acid sites in Al-SBA-15 materials with different Al contents was determined and the catalysts were evaluated in the aromatic reaction of 2,5-dimethylfuran with ethylene. The optimal combination of Le sites, to produce the first cycloaddition, and Br sites, for subsequent dehydration, was achieved with the Al(1.28)SBA-15 catalyst. After optimization of main reaction parameters (i.e., pressure, temperature and reagents and catalyst concentrations), a 42 % yield of p-xylene was achieved and maintained even after three consecutive re-cycles of solid catalyst. Finally, the possible extended scope of this catalytic system for producing toluene and trimethylbenzene from the corresponding starting reactants was also evaluated.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"462 ","pages":"Article 115562"},"PeriodicalIF":5.3,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of A-site substitution for Pt supported La0.8A0.2FeO3 perovskite for aqueous-phase aerobic oxidation of ethylene glycol to glycolic acid using O2","authors":"Seungdon Kwon,&nbsp;Nagyeong Kim,&nbsp;Hyeonji Yeom,&nbsp;Hanbit Jang,&nbsp;Kyungsu Na","doi":"10.1016/j.cattod.2025.115548","DOIUrl":"10.1016/j.cattod.2025.115548","url":null,"abstract":"<div><div>Selective oxidation of biomass-derived polyols into value-added chemicals is a promising strategy for sustainable chemical production. Among these, ethylene glycol (EG) serves as a versatile platform molecule due to its simple structure and dual hydroxyl functionality. In this study, a series of perovskite-type oxides with the general formular of La_0.8A_0.2FeO₃ (A = Mg, Ca, Sr, Ba) was synthesized and impregnated with 1 wt% Pt to investigate structure–activity relationships in the aerobic oxidation of EG to glycolic acid (GA). Physicochemical characterizations using XPS, H₂-TPR, O₂-TPO, and ethanol chemisorption revealed that A-site substitution significantly affected Pt dispersion, oxidation state, and oxygen vacancy concentration. Notably, Sr-substituted catalysts exhibited high EG conversion and GA selectivity under both pressurized and ambient conditions, which was attributed to the presence of metallic Pt⁰, abundant oxygen vacancies, facile oxygen activation, and enhanced interaction with –OH containing reactants. These findings propose the critical role of A-site engineering in tailoring perovskite-supported Pt catalysts and provide valuable insights into the rational design of heterogeneous oxidation catalysts for polyol upgrading.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"462 ","pages":"Article 115548"},"PeriodicalIF":5.3,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bias-controlled catalytic selectivity via metal–semiconductor schottky nanodiodes","authors":"Yeji Yoon ,&nbsp;Kyoungjae Song ,&nbsp;Jeong Young Park ,&nbsp;Si Woo Lee","doi":"10.1016/j.cattod.2025.115559","DOIUrl":"10.1016/j.cattod.2025.115559","url":null,"abstract":"<div><div>The selective oxidation of methanol serves as a model reaction for probing the fundamental principles of heterogeneous catalysis, where control over product distribution remains a central challenge. Here, we report a catalytic nanodiode platform based on a Pt/n-type TiO₂ Schottky junction that enables active modulation of reaction selectivity via applied electrical bias. By systematically varying the bias direction and magnitude during methanol oxidation under oxygen-rich conditions, we demonstrate that accumulation of negative charge on the Pt surface under reverse bias leads to a consistent decrease in methyl formate selectivity, indicating a shift toward full oxidation pathways. Electrical measurements confirm the suppression of current under reverse bias, supporting the formation of an electron-rich catalytic interface. These results provide direct experimental evidence that external control of interfacial charge can influence reaction selectivity, establishing catalytic nanodiodes as a promising platform for electronically tunable heterogeneous catalysis.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"462 ","pages":"Article 115559"},"PeriodicalIF":5.3,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing structural properties of zeolite support to enhance branched isomer yield in gasoline range in Fischer-Tropsch synthesis reaction","authors":"Jeong-Chul Kim ,&nbsp;Daeyoung Bae ,&nbsp;Subin Son ,&nbsp;Junsang Lee ,&nbsp;Shin Hyuk Kim ,&nbsp;Doyeon Lee ,&nbsp;Joo-Il Park ,&nbsp;Kyung Duk Kim ,&nbsp;Kanghee Cho","doi":"10.1016/j.cattod.2025.115549","DOIUrl":"10.1016/j.cattod.2025.115549","url":null,"abstract":"<div><div>In Fischer-Tropsch synthesis reaction using cobalt nano-catalyst, the role of zeolite nanosponge containing Brønsted-Lowry acid sites at mesopore walls was revealed to be important to enhance the yield of isomer hydrocarbon in gasoline range. The acid sites on the external surface where the product shows facile diffusion facilitate isomerization action and cracking. By performing systematic investigation, we confirmed that the yield of branched isomers in gasoline range (<em>i</em>-C_5–11) gradually increases with increasing the external surface area of the <strong>MFI</strong> zeolite. This result indicates that the large external surface area is good for high dispersion of cobalt nanoparticles and high concentration of the external acid sites, consequently advantageous to form <em>i</em>-C_5–11. Meanwhile, the <em>i</em>-C_5–11 selectivity is varied significantly with respect to the acid concentration; the optimal Si/Al ratio, which determines the concentration of Brønsted-Lowry acid sites, was found to be 50, yielding a maximum <em>i</em>-C_5–11 fraction of 25.6 %. Consequently, the zeolite <strong>MFI</strong> nanosponge synthesized using di-quaternary ammonium surfactant, with Si/Al = 50 is the most suitable supporting material for Co nanoparticles in Fischer-Tropsch synthesis reaction for the purpose producing high-value gasoline fuels.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"462 ","pages":"Article 115549"},"PeriodicalIF":5.3,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145020273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Activating properties of residual coke after incomplete oxidative regeneration of ferrierite used in skeletal 1-butene isomerization","authors":"Karoline L. Hebisch ,&nbsp;Pawel A. Chmielniak ,&nbsp;Violet A. Cutler ,&nbsp;Carsten Sievers","doi":"10.1016/j.cattod.2025.115545","DOIUrl":"10.1016/j.cattod.2025.115545","url":null,"abstract":"<div><div>This study demonstrates that partial oxidative regeneration of spent ferrierite zeolite (H-FER / H-ZSM-35) used in skeletal 1-butene isomerization effectively restores catalyst activity, while residual carbonaceous deposits significantly reduce the catalyst startup time. By employing catalyst characterization techniques such as X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), <em>operando</em> UV-Vis spectroscopy, and density functional theory (DFT) calculations, the findings reveal that oxidative regeneration of spent H-FER at 500 °C removes external polycyclic aromatic carbonaceous deposits that block pore mouths. However, this process also promotes the migration of internal carbonaceous deposits to the external surfaces, where they condense into polycyclic aromatic structures. These structures obstruct pore access until the total carbonaceous deposits are reduced to below ∼1 wt%. Beyond this threshold, further oxidative removal of coke is not beneficial, as the residual carbonaceous deposits promote catalyst startup in subsequent cycles and inhibit strong acid sites that contribute to side product formation. In addition to offering a practical strategy for accelerating catalyst startup, this partial regeneration approach provides valuable insights into the nature of catalytically active species at the pore mouth. The results suggest that residual carbonaceous fragments can enhance catalyst activation speed by up to threefold. Utilizing these residual deposits as both coke precursors and selective poisons represents a promising method for efficient partial oxidative regeneration of catalysts affected by coke deposition.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"462 ","pages":"Article 115545"},"PeriodicalIF":5.3,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stimuli-responsive Pickering emulsions: From interfacial design to catalytic opportunities","authors":"Pavel Svec,&nbsp;Niccolo Lusiani,&nbsp;Ondrej Sedlacek","doi":"10.1016/j.cattod.2025.115534","DOIUrl":"10.1016/j.cattod.2025.115534","url":null,"abstract":"<div><div>Stimuli-responsive Pickering emulsions stabilized by solid nanoparticles with properties modulated by external triggers represent a versatile platform for sustainable biphasic catalysis. Unlike conventional surfactant-based systems, these emulsions offer robust, surfactant-free interfaces with enhanced control over emulsification, demulsification, and even phase inversion, enabled by stimuli such as pH, temperature, light, redox conditions, or magnetic fields. This perspective article provides a concise overview of recent advances in the design of such \"smart emulsions \"with a focus on functional polymeric and hybrid nanoparticle stabilizers engineered for responsiveness. These systems not only facilitate on-demand catalyst recovery and product separation but also enhance catalytic efficiency through increased interfacial area and selective localization of the catalyst. While addressing current challenges in their scalability and long-term reusability, we highlight their applications in interfacial catalysis, biocatalysis, and environmental remediation. By integrating major advances in colloid science with responsive materials, these systems emerge as a promising avenue toward sustainable chemical processing.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"462 ","pages":"Article 115534"},"PeriodicalIF":5.3,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Methane partial oxidation over Rh/ZSM-5 catalysts in a high-pressure continuous flow reactor","authors":"A.K.M. Kazi Aurnob ,&nbsp;Mark B.F. Berko ,&nbsp;Jialin Yu ,&nbsp;David Chadwick ,&nbsp;Kang Li ,&nbsp;Richard J. Lewis ,&nbsp;Thomas Davies ,&nbsp;Stuart H. Taylor ,&nbsp;Graham J. Hutchings ,&nbsp;James J. Spivey ,&nbsp;Kunlun Ding","doi":"10.1016/j.cattod.2025.115558","DOIUrl":"10.1016/j.cattod.2025.115558","url":null,"abstract":"<div><div>Zeolite-supported Rh catalysts have been shown to be highly effective in catalyzing the oxidative carbonylation of methane to produce acetic acid. However, most of the research reported so far employed high-pressure batch reactors with long residence times. Continuous flow reactors have been seldomly used, with the majority of earlier works focused on ambient pressure studies. In this contribution, we constructed a high-pressure continuous flow reactor with steam cofeeding to bridge the knowledge gap that exists between these two distinct approaches. The production of CH₃OH, CH₃COOH, and other oxygenates, using a reactant mixture of CH₄, CO, O₂, and steam, was observed over Rh/ZSM-5 catalysts. The primary oxygenates, CH₃OH and CH₃COOH, reached productivities of 45 and 102 µmol/(g_cat.•h), respectively. The influence of space velocity, Rh loading, Si/Al ratio of the zeolite support, and CO partial pressure were investigated.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"462 ","pages":"Article 115558"},"PeriodicalIF":5.3,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145020271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"LaFe1-xMnxO3−δ as effective redox catalysts for CO2 splitting and methane partial oxidation in a cyclic redox scheme","authors":"Sherafghan Iftikhar ,&nbsp;William Martin ,&nbsp;Andrew Pedersen,&nbsp;Sam Portillo,&nbsp;Junchen Liu,&nbsp;Fanxing Li","doi":"10.1016/j.cattod.2025.115546","DOIUrl":"10.1016/j.cattod.2025.115546","url":null,"abstract":"<div><div>The current study reports LaFe_1-xMn_xO_3−δ redox catalysts (RCs) for CO₂-splitting and methane partial oxidation (CH₄-POx) in a cyclic redox scheme. Lanthanum (La) was chosen as the A-site cation whereas iron (Fe) and manganese (Mn) were chosen as the B-site cations, respectively. La, Fe, and Mn were incorporated into the perovskite structure (LaFe_1-xMn_xO_3−δ) at various Fe/Mn ratios to tailor the equilibrium oxygen partial pressures for CO₂-splitting and methane partial oxidation. Compared to the standalone redox pairs of Fe and Mn (i.e., Fe₂O₃/Fe₃O₄, Fe₃O₄/FeO, and Mn₂O₃/Mn₃O₄) which, from a thermodynamic standpoint, favor the complete combustion of CH₄, the perovskite structured redox catalysts (RCs, i.e., LaFe_1-xMn_xO_3−δ) favored the selective oxidation of CH₄ to syngas. In addition, impregnating the RCs with 1 wt% ruthenium (Ru) led to a significant improvement in their redox kinetics without affecting their redox thermodynamics. The Ru-impregnated, perovskite structured RCs (i.e., LaFeO₃, LaFe_0.625Mn_0.375O₃, and LaFe_0.5Mn_0.5O₃ ) exhibited excellent redox performance in terms of the syngas yield (92 – 100 %) and CO₂ conversion (95–98 %). Long-term redox testing over Ru-impregnated LaFeO₃ and LaFe_0.5Mn_0.5O₃ demonstrated relatively stable performance for 100 redox cycles whereas activity loss was observed for LaFe_0.625Mn_0.375O₃, LaFe_0.375Mn_0.625O_3, and LaMnO₃ respectively. Among RCs containing both Mn and Fe, LaFe_0.5Mn_0.5O₃ exhibited the best performance, maintaining satisfactory activity over 100 cycles and higher oxygen capacity. XRD and XPS analysis suggest that the ability to regenerate the perovskite phase under a CO₂ environment and a near surface A:B site cation ratio close to the perovskite stoichiometry would likely correspond to more stable performance. Additionally, the inclusion of Mn on the B-site enhances the coke resistance of the redox catalyst when compared to undoped LaFeO₃.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"462 ","pages":"Article 115546"},"PeriodicalIF":5.3,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tailoring Ni particle size to improve catalytic methane decomposition on La2Ce2O7 supports","authors":"Sung-Bin Choi ,&nbsp;Da-Bin Kang ,&nbsp;Su-Ji Kim ,&nbsp;Gwan-Joong Park ,&nbsp;Youngji Kim ,&nbsp;Woohyun Kim ,&nbsp;Chang Hyun Ko","doi":"10.1016/j.cattod.2025.115550","DOIUrl":"10.1016/j.cattod.2025.115550","url":null,"abstract":"<div><div>Catalytic decomposition of methane (CDM) provides a CO₂-free route for hydrogen production, where the structure and dispersion of Ni particles play a critical role in determining catalytic performance. In this study, Ni-based catalysts supported on Ce-rich La–Ce mixed oxides were synthesized using two different precipitation methods: co-precipitation (CP) and deposition- precipitation (DP). The CP method resulted in the incorporation of Ni species within the support lattice, which led to stronger metal–support interaction but limited surface accessibility. In contrast, the DP method produced Ni particles mainly on the support surface, enhancing methane activation at low Ni loadings. However, when the Ni loading exceeded 20 wt%, the DP catalysts showed significant particle aggregation and partial detachment from the support. Despite retaining moderately ordered carbon structures, this structural degradation reduced CDM activity due to diminished dispersion and weaker particle anchoring. Among all catalysts tested, the DP–NLC–10 sample with approximately 30 nm Ni particles exhibited the highest carbon yield, attributed to its optimal particle size and surface dispersion. These results demonstrate that not only the amount, but also the spatial arrangement and stability of Ni particles must be carefully controlled to achieve high and stable performance in methane decomposition.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"462 ","pages":"Article 115550"},"PeriodicalIF":5.3,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strain-driven adsorption site modification on Pd-based nano cube for fuel cell application","authors":"Yeonwoo Do ,&nbsp;Seohee Jang ,&nbsp;Seokho Lee ,&nbsp;Yiyun Yang ,&nbsp;Yunjeong Jang ,&nbsp;Hyun-Suk Kim ,&nbsp;Kwun-Bum Chung ,&nbsp;Kyung-Wan Nam ,&nbsp;Yoon Kee Kim ,&nbsp;Kihyun Shin","doi":"10.1016/j.cattod.2025.115547","DOIUrl":"10.1016/j.cattod.2025.115547","url":null,"abstract":"<div><div>This research focused on maximizing the catalytic activity in nanocubes (NCs) with (100) facets. The primary goal was to reduce the adsorption energy of the adsorbate, thereby enhancing the activity of the fuel cell catalyst and approaching the optimal point on the volcano plot. We induced strain by introducing core elements such as Ru, Rh, Ir, Au, Ag, Ni, Pt, Cu, and their intermetallic compounds. The adsorption energy for intermediates (such as O, OH, and OOH) was calculated by exploring various adsorption sites. Studies of strain and charge analysis have been conducted, providing deeper insight into interactions at the atomic level. Strain analysis revealed how the different core elements affect the lattice parameters and consequently the adsorption energy of the intermediates. Charge analysis highlighted the redistribution of electron density upon adsorption, providing a clearer picture of the relationship between strain, electronic structure, and catalytic activity. The study illuminated the prospect of advancing fuel cell technology through a comprehensive understanding of the interplay between the surface reconstruction and strain on the (100) surface. Such understanding enabled effective manipulation of catalytic adsorption energy, offering promising strategies for further enhancing fuel cell catalyst activity.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"462 ","pages":"Article 115547"},"PeriodicalIF":5.3,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145004974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}