Catalysis Today最新文献

{"title":"Progress and perspective on the fundamental understanding of structure–activity/selectivity relationships for Ag catalyzed ethylene epoxidation","authors":"Tiancheng Pu ,&nbsp;Adhika Setiawan ,&nbsp;Srinivas Rangarajan ,&nbsp;Israel E. Wachs","doi":"10.1016/j.cattod.2025.115301","DOIUrl":"10.1016/j.cattod.2025.115301","url":null,"abstract":"<div><div>Ethylene oxide (EO) stands among the most pivotal gateway chemicals where Ag-catalyzed ethylene epoxidation is the only viable route in the chemical industry. Academically, it is also one of the most attractive model reactions that involves advancements of multiple disciplines in catalysis science. Over the past decades, a list of classic fundamental questions have emerged that sparked extensive debates regarding <em>i</em>) nature of selective oxygen species; <em>ii</em>) state of the silver surface layer under reaction condition, <em>iii</em>) detailed reaction mechanism of ethylene epoxidation, <em>etc</em>. In this contribution, we critically review what has been achieved to date on the understandings of the molecular structure – activity relationship for silver-catalyzed ethylene oxidation. We first highlight how cutting-edge <em>in situ</em>/<em>operando</em> spectroscopic characterization techniques played a unique role in deciphering the catalytic structure of the silver catalyst under working conditions. Next, we provide a strategic summary on the means of maneuvering the activity and EO selectivity over supported Ag/α-Al₂O₃ catalysts, including particle size manipulation, crystal phase engineering, silver oxidation state and support management. The review ends with a perspective on the computational insights into the kinetics and mechanism of Ag-catalyzed ethylene epoxidation. We hope that the developments and methodologies highlighted in this review will not only help academia and industry to further the fundamental understanding and commercial development of silver-based catalysts for ethylene epoxidation, but also inspire revolutionary breakthroughs in other heterogeneous catalysis applications.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"455 ","pages":"Article 115301"},"PeriodicalIF":5.2,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143824331","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":"A sustainable synthesis of a monometallic vanadium-supported H-beta zeolite catalyst for CO2-assisted oxidative dehydrogenation of butane to olefins","authors":"Suleiman Magaji ,&nbsp;Zuhair Omar Malaibari ,&nbsp;Mohammad M. Hossain ,&nbsp;Galal Atef Nasser ,&nbsp;Ziyauddin S. Qureshi ,&nbsp;Shakeel Ahmed","doi":"10.1016/j.cattod.2025.115303","DOIUrl":"10.1016/j.cattod.2025.115303","url":null,"abstract":"<div><div>Developing methods to utilize CO₂ emissions is crucial for long-term environmental sustainability, as underground storage will eventually become impractical. One promising approach is the development of active catalysts for the CO₂-assisted oxidative dehydrogenation of butane (CO₂ ODHB) to olefins. This study presents the results of the performance of different vanadium loadings supported on H-beta Zeolite synthesized using the solvent-free approach for the CO₂ ODHB. The catalysts were synthesized and characterized regarding surface morphology, surface reducibility, acidity, and textural properties using XRD, SEM-EDX, H₂-TPR, NH₃-TPD, and BET analysis. The H₂-TPR result showed that the 10 wt%V/H-beta zeolite displayed higher reducibility and stronger metal-support interaction. The BET surface area increases with the percentage of vanadium oxide, except for the 5 % vanadium oxide content. The NH₃ -TPD profile showed that as the loading of vanadium oxide increases on the surface of the zeolite support, the surface acidity of the catalyst increases from 2.5 wt%V/H-beta Zeolite to 10 wt%V/H-beta Zeolite and then drops at 15 wt%V/H-beta Zeolite. During a 10-hour time-on-stream test, the catalyst maintained stable butane conversion and C₄ olefin selectivity of approximately 31 % and 62 %, respectively, at 600 °C using a 10 wt%V/H-beta Zeolite catalyst. In-situ DRIFT measurements provided insights into the dynamic changes on the catalyst surface and the evolution of reaction intermediates during the CO₂-assisted oxidative dehydrogenation of butane. The synthetic approach demonstrated a promising strategy for synthesizing an eco-friendly catalyst effective for CO₂-assisted oxidative dehydrogenation of butane to olefins.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"455 ","pages":"Article 115303"},"PeriodicalIF":5.2,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807277","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":"An investigation of the impact of niobia loading on platinum catalysts for sour medium-temperature shift reaction","authors":"Ludmila P.C. Silva ,&nbsp;Ana C.S.L.S. Coutinho ,&nbsp;Maria V.M. Reis ,&nbsp;Geronimo Perez ,&nbsp;Liying Liu ,&nbsp;Luís E. Terra ,&nbsp;Fabio B. Passos","doi":"10.1016/j.cattod.2025.115306","DOIUrl":"10.1016/j.cattod.2025.115306","url":null,"abstract":"<div><div>The increasing demand to reduce pollutant emissions, coupled with the declining availability of mineral resources, has heightened the need for technologies that maximize the use of existing resources. Waste gasification is an interesting way to meet this demand, as it enables the production of hydrogen. However, in this gasification process, in addition to hydrogen, carbon monoxide is generated in considerable concentrations, making it necessary to adjust the CO/H₂ ratio through the water-gas shift reaction. In addition the gasification of industrial and urban waste can contain significant concentrations of sulfur that act as a poison for traditional catalysts. As a result, there is an ongoing search for sulfur-tolerant catalysts that can prevent deactivation and eliminate the need for a desulfurization step. Building on the promising results of the Pt/Nb₂O₅ catalyst, new catalysts containing niobia were investigated to assess the impact of niobia loading in the support. In this series of catalysts, increasing the niobium content only leads to higher activity if it does not reduce the niobium surface coverage. Additionally, smaller platinum particle sizes are found to be more favorable for better performance in the water-gas shift reaction. However, the use of Al₂O₃-Nb₂O₅ supports did not impart properties to the platinum catalysts comparable to those of the Pt/Nb₂O₅ catalyst. These catalysts exhibited lower catalytic activity and did not provide sulfur tolerance, regardless of the niobium content. The interaction between platinum and niobia may not have been strong enough to produce the same synergy observed in the Pt/Nb₂O₅ system.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"455 ","pages":"Article 115306"},"PeriodicalIF":5.2,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143817683","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":"Iron minerals as catalysts in photo-assisted NO3– reduction in aqueous phase","authors":"Vanesa A. Hahn,&nbsp;Alicia L. Garcia-Costa,&nbsp;Jose A. Casas","doi":"10.1016/j.cattod.2025.115307","DOIUrl":"10.1016/j.cattod.2025.115307","url":null,"abstract":"<div><div>Presence of nitrogenous compounds in drinking water cannot exceed 50 mg/L for NO_3⁻, 0.1 for NO_2⁻, and 0.5 mg/L for NH_4⁺. In order to address this issue, this study tackles the use of iron-rich minerals (hematite, ilmenite, goethite and magnetite) as catalysts in photo-assisted nitrate reduction employing oxalate as reducing agent. Firstly, the catalytic activity of the different minerals was tested at different pH levels, finding an outstanding performance of magnetite at pH₀ 5, with a 50 % NO_3⁻ reduction in 60 min. After selecting magnetite as catalyst, a parametric study was performed evaluating initial pollutant concentration, catalyst load and reducing agent dosage. Best operating conditions were found to be [NO₃⁻]: 75 mg/L, [Fe₃O₄]: 100 mg/L, [C₂O₄²⁻]: 370 mg/L and pH₀ 5, for which complete NO₃⁻ reduction and selectivity towards N_2(g) was reached after 150 min. Furthermore, magnetite maintained its activity in 5 consecutive cycles without any treatment between runs, showing its great stability. Reaction mechanism follows two pathways: i) direct electron transfer and ii) CO₂^{• −} mediated reduction. This mechanism was validated using methyl viologen as CO₂^{• −}scavenger showing that both pathways contribute equally in NO₃⁻ reduction. Finally, process feasibility was tested employing real groundwater samples naturally containing NO_3⁻, showing promising results towards the implementation of photo-assisted catalytic reduction for drinking water treatment. Thus, a highly efficient technology has been developed, overcoming the limitations of photo-assisted nitrate removal processes by utilizing a cost-effective, stable, and highly active catalyst. This approach achieves the legislation for drinking water while generating negligible [NH_4⁺].</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"455 ","pages":"Article 115307"},"PeriodicalIF":5.2,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792329","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":"Enhanced four-electron oxygen reduction reaction selectivity in atomically dispersed Fe-N-C catalysts via microwave heating","authors":"Takatoshi Murakami ,&nbsp;Yusaku Yamazaki ,&nbsp;Akihiro Okada ,&nbsp;Shin R. Mukai ,&nbsp;Isao Ogino","doi":"10.1016/j.cattod.2025.115304","DOIUrl":"10.1016/j.cattod.2025.115304","url":null,"abstract":"<div><div>Atomically dispersed supported iron (Fe-N-C) catalysts have emerged as the most promising alternatives to Pt-based catalysts for oxygen reduction reaction (ORR) in polymer electrolyte fuel cells (PEFCs). Advances in their synthesis over the past decade have significantly improved their activity, with some catalysts demonstrating high initial activities approaching those of commercial Pt-based catalysts. However, their practical application is hindered by durability challenge, which is facilitated by undesired formation of H₂O₂ via the 2e⁻ ORR pathway. We report a strategy to improve the selectivity to the 4e⁻ ORR pathway using microwave (MW) heating. This approach is demonstrated using Fe-N-C catalysts derived from ZIF-8. Brief heating of the Fe-N-C catalyst at 900 ºC for durations ranging from 1 s to 3 min in a single-mode microwave reactor improves its selectivity by suppressing H₂O₂ formation to the lowest level reported so far, while maintaining catalytic activity in ORR experiments conducted in acidic electrolytes. Characterization data indicate that MW heating reduces N and O atoms while Fe content remained at approximately 1.3 wt% after heating for ≥ 1 s. These changes were accompanied by increased basicity of Fe-N-C catalyst beyond the level reported for Fe-N-C catalysts synthesized via pyrolysis at 1050 ºC under an Ar atmosphere. We propose that MW heating selectively removes metal-free N and O sites responsible for the 2e⁻ ORR pathway, as well as possibly Fe sites weakly bonded to the carbon framework, while preserving Fe–N_<em>x</em> sites held, thereby improving selectivity.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"455 ","pages":"Article 115304"},"PeriodicalIF":5.2,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143817632","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":"Non-conventional hydrogen sources for the catalytic hydrogenation of biomass-derived levulinic acid to produce γ-valerolactone under mild conditions","authors":"Adrian García ,&nbsp;Alberto Pérez-Calvo ,&nbsp;Elianny Da Silva ,&nbsp;Ginebra Sánchez ,&nbsp;Mahesh Eledath-Changarath ,&nbsp;Marie Krečmarová ,&nbsp;Juan F. Sánchez-Royo ,&nbsp;Maria Erans ,&nbsp;Ramón Fernández-Domene ,&nbsp;Rita Sánchez-Tovar ,&nbsp;Benjamin Solsona","doi":"10.1016/j.cattod.2025.115311","DOIUrl":"10.1016/j.cattod.2025.115311","url":null,"abstract":"<div><div>The use of biomass as a renewable energy source has been studied as an alternative to traditional and non-renewable energy sources in order to reduce the greenhouse gas emissions and decarbonize the economy. Levulinic acid (LA) is an important biomass-derived compound, that can be easily obtained by acid hydrolysis from biomass. LA can be transformed into high valuable chemical compounds by catalytic route, as for example in γ-valerolactone (GVL), which has important applications as additive or precursor of biofuels. The transformation of LA to GVL requires a hydrogen source and a proper catalyst. In this work, monometallic catalysts based on Ru and Ni as well as bimetallic RuNi supported on a zeolite have been synthesized and characterized by XRD, XPS and TEM. The hydrogenation of LA into GVL has been studied with these Ni/Ru catalysts using non-conventional hydrogen sources and the results have been compared with the traditional hydrogen source (pressurized molecular hydrogen). The alternative hydrogen sources used are: i) a system based on metallic Zn and water, where Zn can decompose water into hydrogen but it is oxidized to ZnO, ii) a combined system that uses hydrogen produced by photoelectrochemical (PEC) water splitting (WS) using a nanostructure of TiO₂. The bimetallic catalyst led to the highest yield to GVL when Zn was used in the reaction, but the yields achieved are not remarkable (less than 25 %). Conversely, the monometallic catalyst based on Ru was the one that exhibited the highest yield to GVL when pressurized and PEC hydrogen were used. In this case, yields to GVL exceeding 95 % were achieved at 30 °C although the reaction time required was lower when pressurized hydrogen was used. Interestingly, a new system for PEC WS has been proposed, improving the contact between hydrogen and levulinic acid. This new system decreases the induction time, and enhances the GVL formation, especially at low reaction times. Finally, these catalysts are stable after reaction regardless of the source of hydrogen employed.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"455 ","pages":"Article 115311"},"PeriodicalIF":5.2,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785548","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":"Reaction pathway of NOX reduction on a MnOX-CeO2 catalyst: An in-situ FTIR study","authors":"J.A. Martín-Martín ,&nbsp;A. Aranzabal ,&nbsp;E. Finocchio ,&nbsp;M.P. González-Marcos ,&nbsp;J.R. González-Velasco","doi":"10.1016/j.cattod.2025.115309","DOIUrl":"10.1016/j.cattod.2025.115309","url":null,"abstract":"<div><div>MnO_X-CeO₂ mixed oxide is a highly effective catalyst for NO reduction with NH₃ in exhaust gases, demonstrating excellent NO conversion and N₂ selectivity at low temperatures. However, at high temperatures, both conversion and selectivity decline, leading to increased formation of N₂O and NO₂. To understand this behavior, the reaction mechanism was investigated using in situ FTIR spectroscopy, which revealed two distinct pathways. At low temperatures, an Eley-Rideal mechanism dominates, where ammonia adsorbed on Lewis acid sites reacts with gas-phase NO, forming nitrosamine intermediates that rapidly decompose into N₂ and H₂O. At high temperatures, the Langmuir-Hinshelwood mechanism becomes predominant, involving the adsorption of both NH₃ and NO, with NO undergoing oxidation to nitrate species before reacting with NH₃-derived intermediates. The excessive deprotonation of adsorbed NH₃ under these conditions leads to the formation of N₂O as a by-product. These insights provide a deeper understanding of the temperature-dependent catalytic performance of MnO_X-CeO₂ in NO reduction.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"455 ","pages":"Article 115309"},"PeriodicalIF":5.2,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143817633","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":"Supercritical CO2 as sustainable solvent for selective photo-oxidation of monoterpenes with dioxo-Mo complex/TiO2-nanotubes","authors":"Henry Martínez Q. ,&nbsp;Estefany Pájaro ,&nbsp;Edgar A. Páez-Mozo ,&nbsp;Henry Adolfo Lambis-Miranda ,&nbsp;Fernando Martínez O.","doi":"10.1016/j.cattod.2025.115305","DOIUrl":"10.1016/j.cattod.2025.115305","url":null,"abstract":"<div><div>The selective oxidation of monoterpenes to the corresponding epoxides by the photo-stimulated Oxygen Atom Transfer (OAT) reaction was achieved in the supercritical CO₂ medium (sc-CO₂) under the action of molecular oxygen and the catalytic action of the dioxo-molybdenum complex anchored on TiO₂ nanotubes, MoCl₂O₂(2,2′-bipyridine-4,4′-dicarboxylato)/TiO₂-NT, [MoCl₂O₂(Bipy)/TiO₂-NT]. It was observed that the supercritical medium enhanced the photo-stimulated oxygen transfer activity compared to the previously reported liquid-phase reaction conducted with acetonitrile as a solvent. The reaction rate in supercritical CO₂ (sc-CO₂) showed a pronounced dependence on pressure, reaching a maximum at about 14 MPa at 313.15 K. This fact can be attributed to the influence of pressure on the phase behavior of the reaction system, the diffusivity of the components, and the solvent power of sc-CO₂. In order to propose future applications, turpentine oil was also evaluated in the photo-oxidation reaction with O₂, showing that the mixture of monoterpenes can be oxidized to form the respective epoxides.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"455 ","pages":"Article 115305"},"PeriodicalIF":5.2,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143817682","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":"Copper phosphide quantum dot: A bifunctional catalyst for electro- and photochemical transformation of biomass-derived 5-hydroxymethylfurfural","authors":"Tarisha Gupta ,&nbsp;R. Bhavana ,&nbsp;Souradip Ganguly ,&nbsp;Sirshendu Ghosh ,&nbsp;Biswajit Mondal","doi":"10.1016/j.cattod.2025.115302","DOIUrl":"10.1016/j.cattod.2025.115302","url":null,"abstract":"<div><div>The extensive reliance on fossil fuel enables the harnessing of biomass-derived compounds, such as 5-Hydroxymethylfurfural (HMF), for the sustainable production of valuable products. Copper-based materials are gaining interest as heterogeneous electrocatalysts due to their abundance and tuneable redox states. Herein, we report copper phosphide (Cu₃P) quantum dot as a bifunctional electrocatalyst for oxidation and reduction of HMF into 2,5-Furandicarboxylic acid and 2,5-bis(hydroxymethyl)furan, respectively, which serve as the platform chemicals. We have achieved faradaic efficiency of 57 % in 1 M KOH and 45 % in pH 4 PBS at 10 and −2 mA cm⁻² current density for HMFOR and HMFRR, respectively. This work presents the scope of replacing anodic and cathodic reactions of conventional water electrolysis with less energy cost, easy catalyst synthesis, and ambient conditions.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"455 ","pages":"Article 115302"},"PeriodicalIF":5.2,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785549","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":"Synthesis of Cu-Al hydrotalcite precursors with different interlayer anions for application in the NO reduction by CO","authors":"Thainá Gomes ,&nbsp;Daniel Lopes ,&nbsp;Maxwell W. Terban ,&nbsp;Adriana Maria da Silva ,&nbsp;Fatima Maria Zanon Zotin ,&nbsp;Luz Amparo Palacio","doi":"10.1016/j.cattod.2025.115313","DOIUrl":"10.1016/j.cattod.2025.115313","url":null,"abstract":"<div><div>Cu-Al hydrotalcite materials were obtained by coprecipitation with different interlayer anions: carbonate, terephthalate, and tris-dipicolinate cerium complex. Subsequently, they were calcined and tested for NO reduction by CO. The precursors and catalysts were studied to determine their structural, compositional, textural, morphological and reactivity properties. X-ray diffraction, PDF (pair distribution function) simulation and Fourier transform infrared spectroscopy analyses indicated that the hydrotalcite phase was obtained for all precursors with the desired occupation of interlayer anions. Copper reduction was achieved at lower temperatures with catalysts containing cerium, as indicated by TPR, which is correlated with the oxygen vacancies found by XPS and Raman. Through X-ray diffraction, the crystalline copper species present in the spent catalysts were identified: the catalyst from the carbonate precursor exhibited reduced (Cu⁺ and Cu⁰) and oxidized (Cu²⁺) copper species, while the rest of the catalysts only presented the reduced species. Although the catalyst with carbonate between the layers and without Ce is the most active, this activity is related to its high capacity to form N₂O at low temperatures, which is undesirable. The highest N₂ selectivity at low NO conversions was reached with the catalyst obtained from the terephthalate-precursor and, while at intermediated NO conversions, the highest N₂ selectivity was reached with the catalyst originated from cerium complex-precursor.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"455 ","pages":"Article 115313"},"PeriodicalIF":5.2,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799488","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}