Catalysis Today最新文献

{"title":"Selectivity modulation in Fischer-Tropsch synthesis through reducibility control of cobalt-species containing HMS framework","authors":"T.A. Zepeda","doi":"10.1016/j.cattod.2024.115110","DOIUrl":"10.1016/j.cattod.2024.115110","url":null,"abstract":"<div><div>Here reports the modulation of selectivity in Fischer-Tropsch synthesis through the control of cobalt reducibility within a hexagonal mesoporous silica (HMS) framework. Cobalt loading, varied from 3 % to 12.5 wt%, generated different surface and bulk cobalt species that interact variably with the support, significantly influencing their reducibility and the resultant catalytic behavior. This variation significantly affected the reducibility of the cobalt species, influencing on the catalytic behavior. The control of reducibility and stability of Co species is contingent on the cobalt loading. Higher cobalt content enhances the reducibility of Co species, shifting product selectivity from long-chain hydrocarbons to lighter olefins and oxygenates. At a TOS of 4 h, the active phase predominantly involves metallic Co species, while CO₂ and oxygenates formation is closely linked to the pair Co⁰-Co²⁺ active phase. After a TOS of 120 h, samples with higher cobalt content (6.1–15.8 % wt.) exhibited notable deactivation and changes in selectivity and hydrocarbon distribution. These changes were associated with the formation of a Co₂C phase, which inhibits methane formation and chain growth while enhancing the production of lower olefins and oxygenates through a synergistic interaction at the Co⁰ and Co₂C interface, also improves the WGS reaction, thereby increasing CO₂ selectivity.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"445 ","pages":"Article 115110"},"PeriodicalIF":5.2,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemistry in rechargeable zinc-air battery: A mechanistic overview","authors":"Arkaj Singh,&nbsp;Ravinder Sharma,&nbsp;Akriti Gautam,&nbsp;Bhavnish Kumar,&nbsp;Sneha Mittal,&nbsp;Aditi Halder","doi":"10.1016/j.cattod.2024.115108","DOIUrl":"10.1016/j.cattod.2024.115108","url":null,"abstract":"<div><div>The progress in civilization can be related to the development of newer technological development and associated energy demand to run those systems. The personalized healthcare systems, the depletion of conventional fossil fuel reserve led us to think about alternative energy storage devices. Thus, it is important to develop energy storage materials with the property of good mechanical strength and stability for longer hours. Zn-air batteries (ZAB) show the promises to be an alternative of Li-air batteries for this purpose. ZABs can fulfill our need of stringent requirements such as high energy density, cost-effectiveness and it is safer as compared to Li-ion batteries. The stability of zinc in aqueous and air environments makes ZAB technology more reliable and effective for small to large-scale flexible electronics. To further enhance its efficiency, different scientific materials and methods have been developed over decades, of which this review provides detailed insight into the parameters and mechanisms related to the key components of the ZAB for enhancing the performance of ZAB. We summarized the working mechanism of overall reversible-ZABs and then independently we explained the mechanism and problems associated with cathode, anode, and electrolyte, followed by the current breakthrough related to each. Aspects such as role of optimal e_g occupancy in bifunctional activity, inhibition of zinc dendrite, and gel polymer electrolytes with enhanced conductivity and strength are specifically highlighted. To facilitate a broad discussion among different research communities, important scientific hurdles and their potential solution related to R-ZABs are also summarized.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"445 ","pages":"Article 115108"},"PeriodicalIF":5.2,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552748","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 reactivity of small Ag/Pt bimetallic cluster for ORR: A comprehensive study using density functional theory approach","authors":"Sandeep Nigam ,&nbsp;Chiranjib Majumder","doi":"10.1016/j.cattod.2024.115102","DOIUrl":"10.1016/j.cattod.2024.115102","url":null,"abstract":"<div><div>Bimetallic clusters, as the name suggests, are known to act as bifunctional catalyst. Therefore, it is possible to tune the composition of the catalyst to achieve the best performance for a specific reaction. In the first part of this work, we explore the geometric and electronic structures of various Ag-Pt bimetallic clusters and find the right composition for ORR, one of the most sought-after reactions in the field of energy materials. We have considered Ag-Pt bimetallic clusters in both free and on Al₂O₃(0001) support. The results reveal that the equilibrium structures of the bimetallic Ag_nPt_m (n+m ≤ 12 atoms) clusters are governed by a balance of competing interactions (<em>Pt-Pt vs Ag-Pt vs cluster-support interactions</em>). Whilst the isolated decamer cluster with 5:5 or 6:4 composition (Ag₆Pt₄ and Ag₅Pt₅) shows atomically segregated structures, Ag rich clusters (Ag₉Pt_1–3) prefer to form core-shell pattern where Pt forms the core surrounded by Ag atoms. In general, these clusters adopt pseudo-planar structure on alumina support following the surface template. Analysis of the electronic structure shows that Al₂O₃ surface induces significant broadening in the energy states of the bimetallic cluster, which in turn facilitates higher mixing between <em>d</em>-states of the Ag and Pt in the complex. Finally, the <em>d</em>-band centre descriptor model has been utilized to underscore the chemical reactivity of these bimetallic clusters. Remarkably, the Ag₆Pt₄@Al₂O₃ cluster with <em>d</em>-band centre at −2.68 eV is found to be in “just right” zone for ORR. This is further corroborated by the reduction (∼ 25 %) in oxidation reaction enthalpy of the Ag₆Pt₄@Al₂O₃ than standard Pt(111) catalytic surface.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"445 ","pages":"Article 115102"},"PeriodicalIF":5.2,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552722","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":"Green synthesis of niobium (V) oxide nanoparticles using pecan nutshell (Carya illinoinensis) and evaluation of its antioxidant activity","authors":"Luís Fernando Wentz Brum ,&nbsp;Maurício Dalla Costa Rodrigues da Silva ,&nbsp;Cristiane dos Santos ,&nbsp;Giovani Pavoski ,&nbsp;Denise Crocce Romano Espinosa ,&nbsp;William Leonardo da Silva","doi":"10.1016/j.cattod.2024.115106","DOIUrl":"10.1016/j.cattod.2024.115106","url":null,"abstract":"<div><div>Niobium is a metal that has been attracting great interest in producing high-technology materials, in which niobium oxide nanoparticles (Nb₂O₅-NPs) are inserted. In this context, the present study aims to develop and characterize structurally and morphologically niobium (V) oxide nanoparticles (Nb₂O₅-NPs) by the green synthesis method from pecan nutshell (<em>C. illinoinensis</em>) extract. Nb₂O₅-NPs were characterized by Attenuated Total Reflection Fourier Transform Infrared (ATR-FTIR), Scanning Electron Microscopy (SEM), X-ray diffraction (XRD) and N₂ porosimetry (BET/BJH method). The antioxidant potential of the pecan nutshell extract was determined for the quantification of phenolic compounds and flavonoids. The XRD diffractogram showed that the Nb₂O₅-NPs presented a semicrystalline structure with the presence of the pseudohexagonal phase of Nb₂O₅. The ATR-FTIR spectrum confirmed the presence of a band vibration of the Nb-O at 600 cm⁻¹. The Nb₂O₅-NPs presented spherical morphology according to the SEM micrography with a specific surface area of 1.72 m² g⁻¹ and 36.31 nm pore diameter (isotherm type III) by the N₂ porosimetry. The pecan nutshell extract showed the presence of polyphenols (336.8 mgAG mL⁻¹) and flavonoids (200.1 mgCt mL⁻¹), demonstrating the high potential to act as a bioreducing and stabilizing agent for the green synthesis of Nb₂O₅-NPs. Therefore, the green synthesis of Nb₂O₅-NPs is feasible with potential application in different fields.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"445 ","pages":"Article 115106"},"PeriodicalIF":5.2,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531570","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 photo/electrocatalytic efficiency of Zn-decorated TiO2 nanostructures for sustainable hydrogen evolution","authors":"Mohd Fazil ,&nbsp;Jahangeer Ahmed ,&nbsp;Tokeer Ahmad","doi":"10.1016/j.cattod.2024.115103","DOIUrl":"10.1016/j.cattod.2024.115103","url":null,"abstract":"<div><div>Monophasic 1, 2.5, and 5 % Zn-decorated TiO₂ nanocatalysts have been fabricated by environmentally benign hydrothermal synthesis by avoiding expensive chemicals. As- prepared nanostructures have been investigated utilizing various sophisticated instruments like XRD, scanning and transmission electron microscopy, EDAX, Raman, optoelectronics as well as BET Surface Area studies. 2.5 % Zn- decorated TiO₂ was found to have superior photocatalytic performance, exhibiting an H₂ formation of 25.55 mmol<span><math><msubsup><mrow><mi>g</mi></mrow><mrow><mi>cat</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msubsup></math></span> in 8 hours and average H₂ generation of 3.15 mmol<span><math><msubsup><mrow><mi>g</mi></mrow><mrow><mi>cat</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msubsup></math></span>h⁻¹ at 170 W light intensity. Additionally, electrochemical investigations showed that 5 % and 2.5 % Zn-doped TiO₂ had a higher cathodic and anodic current density of 10 mA/cm² at −0.95, indicating that it has a higher HER catalytic activity, respectively. The synergistic impact of pristine TiO₂ and Zn-incorporated TiO₂ nanocatalysts is responsible for the increased kinetics of H₂ evolution, as it increases the separation and transfer of photo-charged (e^-/h⁺ pair) carriers and decreases redox potential for HER.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"445 ","pages":"Article 115103"},"PeriodicalIF":5.2,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531572","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":"Layered double hydroxides for industrial wastewater remediation: A review","authors":"Sudarshan Sarkar,&nbsp;Chandan Upadhyay","doi":"10.1016/j.cattod.2024.115101","DOIUrl":"10.1016/j.cattod.2024.115101","url":null,"abstract":"<div><div>Tanneries and textile industries significantly impact aquatic ecosystems through the discharge of effluents containing heavy metals, dyes, and metal-resistant bacterial pathogens. This review examines the potential of layered double hydroxides (LDHs) for addressing these environmental challenges. It offers a comprehensive analysis of LDH morphology, synthesis techniques, and performance in wastewater remediation. LDHs are ionic lamellar hydroxides, containing two different metal cations in the main layers and anionic species in the interlayer, have attracted substantial research interest due to their ease of synthesis and unique properties. This review distinguishes itself by correlating various synthesis methods for LDHs directly with their efficacy in wastewater remediation, offering insights not typically covered in other reviews. Furthermore, the review explores the critical role of interlayer anions, such as carbonate and sulfate, in determining its influence in the structural, chemical, and physical properties of LDHs. It also addresses how modifications with graphitic carbon nitride (gC₃N₄) and graphene-based materials enhance LDH’s performance by increasing surface area, delaying charge recombination, and improving adsorption and photocatalytic activity. he review evaluates the impact of these factors on the removal of pollutants from wastewater and provides an in-depth discussion of the mechanisms involved in pollutant removal, including adsorption, ion exchange, and photocatalysis. It also highlights the antibacterial properties of LDHs, particularly when combined with advanced materials, demonstrating their potential antimicrobial efficacy. In addition to presenting a fresh perspective on the correlation between synthesis methods and performance outcomes, this review offers a comprehensive overview of the limitations and challenges associated with LDH technologies. It provides valuable insights into the optimization process and practical considerations, making it an essential resource for advancing LDH technologies in real-world wastewater treatment applications.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"445 ","pages":"Article 115101"},"PeriodicalIF":5.2,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531571","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":"Ethyl esters synthesis catalyzed by lipase B from Candida antarctica immobilized on NiFe2O4 magnetic nanoparticles","authors":"Gabrielle A.R. da Silva ,&nbsp;Thamires M. de L.O. da Silva ,&nbsp;João Paulo da S.Q. Menezes ,&nbsp;Elizabeth Cristina T. Veloso ,&nbsp;Gizele C. Fontes-Sant’Ana ,&nbsp;Noemi Raquel C. Huaman ,&nbsp;Rodrigo Brackmann ,&nbsp;Marta A.P. Langone","doi":"10.1016/j.cattod.2024.115099","DOIUrl":"10.1016/j.cattod.2024.115099","url":null,"abstract":"<div><div>The development of heterogeneous biocatalysts allows the expansion of the application of enzymes in different industrial processes, favoring the establishment of clean technologies. This work investigates the capacity of nickel ferrite magnetic nanoparticles (NiFe₂O₄) as a support for lipase B from <em>Candida antarctica</em> (CalB) immobilization. The adsorption capacity of the support revealed a maximum value of 15 mg_protein/g_support, according to the Langmuir isotherm model. Efficiency immobilization by physical adsorption was low (21.3 %), and CalB was covalently immobilized after functionalization of NiFe₂O₄ with APTMS (3-aminopropyl trimethoxysilane) and activation with glutaraldehyde (GA), showing higher immobilization yield (62.9 %). The spinel ferrite NiFe₂O₄ was characterized by many physicochemical analyses. The enzyme derivatives obtained (NiFe₂O₄-CalB and NiFe₂O₄-APTMS-GA-CalB) were evaluated in the synthesis of alkyl esters. Despite no production was observed in the transesterification reactions, esterification led to 37.3 ± 1.0 % and 62.1 ± 0.2 % of oleic acid conversions using NiFe₂O₄-APTMS-GA-CalB and NiFe₂O₄-CalB, respectively. After 4 cycles, NiFe₂O₄-CalB maintained 92 % of its initial activity. Nickel ferrite magnetic nanoparticles form an efficient heterogeneous catalyst with lipase, which could be used to remove the content of free fatty acids (FFAs), like oleic acid, present in cheap raw materials to produce biodiesel.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"445 ","pages":"Article 115099"},"PeriodicalIF":5.2,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552810","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 and reactivity of Nb/graphene-MCM-48 and Al/graphene-MCM-48 IN CO2 chemical fixation","authors":"Adriele Sabrina Todero ,&nbsp;Fabiana de Oliveira Pereira ,&nbsp;Paloma Truccolo Reato ,&nbsp;Diana Finkler ,&nbsp;Alexander Junges ,&nbsp;Rogério Marcos Dallago ,&nbsp;Katia Bernardo-Gusmão ,&nbsp;Marcelo Luis Mignoni","doi":"10.1016/j.cattod.2024.115085","DOIUrl":"10.1016/j.cattod.2024.115085","url":null,"abstract":"<div><div>Mesoporous materials such as the <em>Mobil Composition of Matter</em> (MCM), play a crucial role in the chemical fixation of carbon dioxide (CO₂). These materials exhibit a porous structure with intermediate-sized pores, providing a high surface area and a uniform pore distribution. The objective of this study is to synthesize the mesoporous material MCM-48 using the ionic solid chloride of 1-hexadecyl-3-methylimidazolium ([C16MI]Cl) as a directing agent and tetraethoxysilane (TEOS) as a silica precursor and apply this material as a catalyst in the cycloaddition reaction of CO2 to propylene oxide to produce propylene carbonate. Compounds such as graphene, aluminum, and niobium are employed in different Si/compound molar ratios (1, 5, and 10) to enhance the material properties. The Nb/Graphene-MCM-48 material with a Si/Nb ratio of 10 demonstrated the best catalytic performance in the CO₂ cycloaddition, achieving a yield of 85 % and a selectivity of 99 % for propylene carbonate. The results demonstrate that MCMs are highly efficient in the selective conversion of CO2 into cyclic carbonate, offering promising applications for CO₂ emission mitigation. This study advances decarbonization and sustainable development, aligning with the Sustainable Development Goals (SDGs) 3 (Good Health and Well-Being), 9 (Industry, Innovation, and Infrastructure), 12 (Responsible Consumption and Production), and 15 (Life on Land) by promoting technologies that reduce environmental impact and support sustainable industrial practices.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"445 ","pages":"Article 115085"},"PeriodicalIF":5.2,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532060","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 exploration of tailoring of hetero-nanostructures of α-MoO3 for efficient electrocatalytic and photocatalytic applications","authors":"Kanhaiya Saini ,&nbsp;Reetu Sharma ,&nbsp;Amit Kumar Sharma ,&nbsp;Balaram Pani ,&nbsp;Anjana Sarkar","doi":"10.1016/j.cattod.2024.115092","DOIUrl":"10.1016/j.cattod.2024.115092","url":null,"abstract":"<div><div>The primary focus of this review is the wide range of techniques available for generating α-MoO₃ nanostructures. Some examples of these processes are hydrothermal method, solvothermal method, sol-gel methods, spray pyrolysis chemical, thermal evaporation, and own heterostructures. The various crystal and electronic structures of α-MoO₃ offer a wealth of possibilities for the discovery of electrocatalysts that are suited for the creation of hydrogen through the splitting of water molecules. The orthorhombic form of α-MoO₃ has showed potential electrocatalytic activity for the hydrogen evolution reaction (HER), while the polymorph has shown poor oxygen evolution reaction (OER) activity. This is the case even though both forms have been investigated. The as-prepared nanostructures were found to be effective photocatalysts for the breakdown of acridine orange when exposed to ultraviolet light. A high photocatalytic property was shown by the generated mixed morphology, which consisted of hexagonal nanoplatelets and nano bars, in order to breakdown the carcinogenic Acridine Orange dye. In addition, as a result of their 1-Dimensional and 2-Dimensional nanostructure feature, they are capable of being recycled with relative ease while maintaining their photocatalytic activity. In order to highlight the potential of α-MoO₃ heterogeneous nanostructures for electrocatalytic and photocatalytic processes like CO₂ reduction, hydrogen evolution, and pollutant degradation, this review will analyze and summarize recent developments in these areas. Also covered in this article are number of contemporary difficulties as well as prospective research directions based on α-MoO₃ nanostructures.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"445 ","pages":"Article 115092"},"PeriodicalIF":5.2,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531569","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":"Engineering porous clay nanoarchitectures from unusual commercial organoclay: Supported manganese oxide as stable catalysts in the total oxidation of volatile organic compounds","authors":"Rosana Balzer ,&nbsp;Alexander Sachse ,&nbsp;Jean-Dominique Comparot ,&nbsp;Maria do Carmo Martins Alves ,&nbsp;Jonder Morais ,&nbsp;Katia Bernardo-Gusmão ,&nbsp;Anderson Joel Schwanke","doi":"10.1016/j.cattod.2024.115098","DOIUrl":"10.1016/j.cattod.2024.115098","url":null,"abstract":"<div><div>The porous engineering of clay nanoarchitectures (PCN) achieved from a well-known but little-explored commercial organoclay C-20A is reported. Thorough characterizations (by XRD, TGA, N₂ sorption, ICP, SEM, TEM, ²⁷Al MAS NMR, DR UV-Vis, XPS, Py-FTIR and H₂-TPR) confirmed a delaminated structure presenting a specific surface area of 504 m² g⁻¹, twelve times higher than the sodic montmorillonite used as reference and featuring a new pore system comprising a size range from supermicropores to small mesopores (1.3–10 nm). The role of these PCN as support of manganese oxide for the gas-phase total catalytic oxidation of volatile organic compounds (VOCs) was evaluated. PCN with 5 % of Mn resulted in a higher nanoparticle dispersion (10 nm) compared to the sodic montmorillonite (17 nm). The highest catalytic activity was reached with PCN containing 10 % of Mn achieving a benzene, toluene and <em>ortho</em>-xylene oxidation of 54 %, 39 % and 34 %, respectively, at 350 °C. The catalyst was stable up to 36 h under these conditions.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"445 ","pages":"Article 115098"},"PeriodicalIF":5.2,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532061","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}