Andrei Dubiniak , Leonid Kulikov , Sergey Egazar'yants , Anton Maximov , Eduard Karakhanov
{"title":"Metal-acid bifunctional catalysts based on porous aromatic frameworks for tandem alkylation-hydrogenation of phenolics with furanics","authors":"Andrei Dubiniak , Leonid Kulikov , Sergey Egazar'yants , Anton Maximov , Eduard Karakhanov","doi":"10.1016/j.micromeso.2025.113594","DOIUrl":"10.1016/j.micromeso.2025.113594","url":null,"abstract":"<div><div>Noble metal catalysts based on porous aromatic frameworks modified with sulfo groups were studied in tandem alkylation-hydrogenation reaction between lignocellulose-derived furanic (furfural, furfuryl alcohol and 5-hydroxymethylfurfural) and phenolic compounds (phenol, m-cresol, guaiacol) to produce high-density fuel precursors. Platinum catalysts were synthesized based on PAF-30-SO<sub>3</sub>H-3 and PAF-30-SO<sub>3</sub>H-5 supports with 3 and 5 % of sulfur, respectively, and both with 0.8 % of platinum. Hydroalkylation of mixtures of two substrates was performed. The reaction of guaiacol with furfuryl alcohol is characterized by the highest yields of long-chain products. The influence of substrates ratio, H<sub>2</sub> pressure, reaction temperature and time on selectivity and activity of the catalysts was studied. The highest yield (77 %) of long-chain oxygenates among all experiments was achieved under the following reaction conditions: 2 MPa H<sub>2</sub>, 4 h, 130 °C and 1:8 mol/mol furfuryl alcohol-guaiacol ratio. Catalysts Pd-PAF-30-SO<sub>3</sub>H-3 (with 1.1 % of palladium) and Ru-PAF-30-SO<sub>3</sub>H-3 (with 0.3 % of ruthenium) were tested in the tandem process to evaluate the impact of metal on reaction. To our knowledge, tandem alkylation-hydrogenation between biomass-derived furanics and phenolics over bifunctional catalysts based on organic polymers is reported for the first time. Moreover, some products of hydroalkylation (e.g., tricyclic oxygenates) haven't yet been described.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"390 ","pages":"Article 113594"},"PeriodicalIF":4.8,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jilong Peng , Xunqian Zhang , Rongqing Qin , Fang Lai , Na Shi , Qinggang Ren , Kungang Chai
{"title":"A chlorine-rich Zn-based metal-organic framework for efficient separation of C3H6/C2H4 and C2H6/C2H4","authors":"Jilong Peng , Xunqian Zhang , Rongqing Qin , Fang Lai , Na Shi , Qinggang Ren , Kungang Chai","doi":"10.1016/j.micromeso.2025.113600","DOIUrl":"10.1016/j.micromeso.2025.113600","url":null,"abstract":"<div><div>In the petrochemical industry, efficiently achieving one-step purification of ethylene (C<sub>2</sub>H<sub>4</sub>) from propylene (C<sub>3</sub>H<sub>6</sub>) or ethane (C<sub>2</sub>H<sub>6</sub>) is a highly sought-after yet challenging task. Herein, we present a chlorine-rich Zn-based metal-organic framework (DMOF-1-Cl<sub>2</sub>) that retains the essential topology of the parent DMOF-1 through the incorporation of 2,5-dichloroterephthalate linkers. The chlorine atoms within the square pores of DMOF-1-Cl<sub>2</sub>, due to their high electronegativity, serve as potential adsorption sites. Gas adsorptive experiments revealed its preferential adsorption of C<sub>3</sub>H<sub>6</sub> and C<sub>2</sub>H<sub>6</sub> over C<sub>2</sub>H<sub>4</sub> at different temperatures. Ideal adsorption solution theory calculation revealed that the selectivity of DMOF-1-Cl<sub>2</sub> for C<sub>3</sub>H<sub>6</sub>/C<sub>2</sub>H<sub>4</sub> and C<sub>2</sub>H<sub>6</sub>/C<sub>2</sub>H<sub>4</sub> reaches 20.8 and 2.2 at 313 K, respectively, outperforming its counterpart (DMOF-1-Br<sub>2</sub>) and most previously reported adsorbents. Theoretical calculations indicated that the gas molecules are primarily distributed around the chlorine atoms with multiple interactions. Furthermore, dynamic breakthrough experiments fully demonstrated the actual potential for achieving one-step purification of polymer-grade C<sub>2</sub>H<sub>4</sub>, in which DMOF-1-Cl<sub>2</sub> displayed high productivity of 206.1 and 31.6 L kg<sup>−1</sup> from C<sub>3</sub>H<sub>6</sub>/C<sub>2</sub>H<sub>4</sub> (2/5, v/v) and C<sub>2</sub>H<sub>6</sub>/C<sub>2</sub>H<sub>4</sub> (1/9, v/v), respectively. Despite the fact that the yield of C<sub>2</sub>H<sub>4</sub> separation from C<sub>2</sub>H<sub>6</sub>/C<sub>2</sub>H<sub>4</sub> mixtures is not extremely high, it still remains at a satisfactory level, demonstrating the practical value and potential of DMOF-1-Cl<sub>2</sub> for industrial applications.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"390 ","pages":"Article 113600"},"PeriodicalIF":4.8,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gabriela Zelenková , Tomáš Zelenka , Dorota Majda , Eva Kinnertová , Miroslav Almáši
{"title":"Exploring macroporosity and partial mesoporosity in carbon materials through thermoporometry with menthol","authors":"Gabriela Zelenková , Tomáš Zelenka , Dorota Majda , Eva Kinnertová , Miroslav Almáši","doi":"10.1016/j.micromeso.2025.113598","DOIUrl":"10.1016/j.micromeso.2025.113598","url":null,"abstract":"<div><div>This study explores using menthol as a novel solid probe in thermoporometry (TPM) to analyze meso- and macroporosity in carbonaceous materials, which is traditionally challenging for conventional liquid probes like water. Four carbon samples with varying pore sizes were characterized to assess ability of menthol to complement traditional methods such as nitrogen physisorption, mercury intrusion, and scanning electron microscopy (SEM) techniques. The results showed that menthol has a detection range from 20 nm to 1500 nm. This allows it to effectively and accurately identify macropores and large mesopores. Optimizing conditions — sample drying, contact time, and heating rate — was essential for accurate results. Pre-drying the carbon samples at 195 °C for 1–4 days minimized moisture interference, and a contact time of 1 h proved sufficient for pore filling. A heating rate of 1 °C min<sup>−1</sup> was found to offer optimal peak resolution and baseline stability in DSC curves. The findings suggest that menthol-based TPM is a reliable alternative to traditional methods, expanding the scope of porosity analysis in carbon materials and enabling the effective characterization of larger pores. This study establishes menthol's potential as a versatile probe in TPM, offering a new approach to the comprehensive characterization of porous structures.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"390 ","pages":"Article 113598"},"PeriodicalIF":4.8,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Iliana Kyriazidou, Mojtaba Sinaei Nobandegani, Jonas Hedlund, Liang Yu
{"title":"Adsorption of CO2, CH4, N2 and He on MFI, CHA and DDR zeolites","authors":"Iliana Kyriazidou, Mojtaba Sinaei Nobandegani, Jonas Hedlund, Liang Yu","doi":"10.1016/j.micromeso.2025.113599","DOIUrl":"10.1016/j.micromeso.2025.113599","url":null,"abstract":"<div><div>The adsorption equilibrium isotherms of the common components of natural gas and biogas, CO<sub>2</sub>, CH<sub>4</sub>, N<sub>2</sub>, and He were experimentally measured over wide temperature ranges on all-silica MFI, CHA, and DDR zeolite crystals. First, large zeolite crystals, suitable for adsorption measurements, were synthesized and characterized by XRD and SEM. In the next step, gas adsorption data was recorded and the Toth equation was fitted to the measured adsorption data, and the adsorption capacity at saturation (<em>C</em><sub><em>sat</em></sub>), affinity constant (<em>b</em>), and Toth heterogeneity parameter (<em>t</em>) were estimated. Finally, the van't Hoff equation was used to calculate the isosteric enthalpy of adsorption and adsorption entropy for all gases on each zeolite. The results reveal that the Toth equation can accurately predict the adsorption of gases on the studied microporous zeolite crystals in the investigated temperature range. To the best of our knowledge, the saturation adsorption capacity and adsorption enthalpy for helium on CHA and DDR zeolites have been determined experimentally for the first time in the present work. The estimated adsorption parameters presented in this work are accurate, primarily due to the large crystals used for the adsorption measurements and the recording of low-temperature adsorption equilibrium isotherms over broad temperature ranges. These factors are crucial for the reliability of our results, which are invaluable for understanding adsorption and mass transfer in zeolite materials, as well as for advancing the development of zeolite materials for gas separation.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"390 ","pages":"Article 113599"},"PeriodicalIF":4.8,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Reyna Ojeda-López , J. Marcos Esparza-Schulz , Isaac J. Pérez-Hermosillo , Enrique Vilarrasa-García , Enrique Rodriguez-Castellón
{"title":"Role of silanol groups and hydrothermal rehydroxylation on the functionalization of SBA-15 with APTES for CO2 capture","authors":"Reyna Ojeda-López , J. Marcos Esparza-Schulz , Isaac J. Pérez-Hermosillo , Enrique Vilarrasa-García , Enrique Rodriguez-Castellón","doi":"10.1016/j.micromeso.2025.113597","DOIUrl":"10.1016/j.micromeso.2025.113597","url":null,"abstract":"<div><div>To identify the most suitable initial characteristics of an APTES-functionalized SBA-15 material, a series of SBA-15 samples was synthesized. Firstly, to remove the template, two methods were employed: i) water and ethanol washing method, and ii) calcination method where three calcination temperatures were explored (350, 450 and 550 °C), all carried out in a constant air flow. The purpose of avoiding calcination of the material is to prevent the loss of silanol groups, which play a key role in the chemical modification with amino groups. And secondly, a portion of these materials were subjected to a hydrothermal process to improve the amount of surface silanol groups, groups on which APTES molecules are anchored. As a result, eight materials were obtained and subsequently functionalized with APTES. Based on the nitrogen adsorption isotherms, an increase in pore size was observed when the material is rehydroxylated, which demonstrates the formation of silanol groups. Upon functionalization, the average pore size decreased by approximately 1.0 nm, suggesting the formation of new bonds between the surface silanol groups with the ethoxy groups of the APTES molecule. The CO<sub>2</sub> uptake capacity showed promising results for most of the materials, with the uncalcined materials presenting the highest values, 2.52 and 2.32 mmol g<sup>−1</sup> at 1 bar and 25 °C for S15WC-F and S15WC-FR, respectively.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"390 ","pages":"Article 113597"},"PeriodicalIF":4.8,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Allen Burton, Trong Pham, Hilda Vroman, Stuart Soled, Eugene Terefenko, Andre Sutrisno
{"title":"Zeolite structure directing agents based upon bulky pyridinium molecules","authors":"Allen Burton, Trong Pham, Hilda Vroman, Stuart Soled, Eugene Terefenko, Andre Sutrisno","doi":"10.1016/j.micromeso.2025.113575","DOIUrl":"10.1016/j.micromeso.2025.113575","url":null,"abstract":"<div><div>We report new zeolite frameworks synthesized with bulky pyridinium molecules as structure directing agents (SDAs). Aluminosilicate zeolite EMM-63 is prepared in potassium-containing hydroxide media with N,2,3,5-tetramethypyridinium or its skeletal isomer N,2,4,6-tetramethylpyridinium. Two new zeolites (EMM-64 and EMM-65) are prepared with 1-methyl-6,7-dihydro-5H-cyclopenta[b]pyridin-1-ium. EMM-64 is crystallized in fluoride media with or without aluminum, and EMM-65 is prepared as a borosilicate in hydroxide media. The same SDA molecule can be used to prepare an aluminosilicate with the <strong>RTH</strong> topology, a framework with large cavities and an 8 × 8 channel system. Within each <strong>RTH</strong> cavity, two SDA molecules form a dimer that is not pi-stacked but instead packs with each pyridinium ring interacting with the unsaturated C5 ring of the neighboring molecule. These interactions optimize the van der Waals interactions both within the dimer and between the dimer and the zeolite framework. The diffraction data of EMM-64 are indexed in tetragonal space group <em>I4</em><sub><em>1</em></sub><em>22</em> or <em>I4</em><sub><em>3</em></sub><em>22</em> with unit cell dimensions <em>a</em> = 13.8 Å and <em>c</em> = 18.0 Å, and the unit cell composition is |C<sub>9</sub>NH<sub>12</sub>F<sub>0.9</sub>|<sub>4</sub>Si<sub>64</sub>O<sub>128</sub>. The dense framework structure of EMM-64 possesses a tortuous 3D 8R channel system and is unusual in that the framework is chiral. EMM-64 possesses a 5<sup>12</sup>8<sup>4</sup> cavity with a flat shape like that of the occluded SDA molecule. The fluoride is sited within the 4<sup>2</sup>5<sup>4</sup>6<sup>2</sup> cages of EMM-64.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"390 ","pages":"Article 113575"},"PeriodicalIF":4.8,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Huanhao Lin , Xin Sun , Yucheng Jin , Yunkai Yu , Yueming Liu
{"title":"Ammonia-assisted dry-gel conversion for preparation of TS-1 with enriched Ti(OSi)3OH active sites","authors":"Huanhao Lin , Xin Sun , Yucheng Jin , Yunkai Yu , Yueming Liu","doi":"10.1016/j.micromeso.2025.113595","DOIUrl":"10.1016/j.micromeso.2025.113595","url":null,"abstract":"<div><div>Defective Ti(IV) species, i.e. Ti(OSi)<sub>3</sub>OH, are highly active catalytic sites within the TS-1 framework, and developing efficient methods to enrich these species has attracted significant attention from both academia and industry sectors. Herein, we developed an ammonia-assisted dry-gel conversion (DGC) method to synthesize TS-1-AM enriched with Ti(OSi)<sub>3</sub>OH species using NH<sub>3</sub> (ammonia, AM) as a modifier. Comprehensive characterization using XRD, UV–Vis, SEM, XPS, pyridine-IR, solid-state MAS NMR confirmed the abundant presence of Ti(OSi)<sub>3</sub>OH species in TS-1-AM. The modified catalyst demonstrated exceptional performance in alkene epoxidation, achieving approximately 150% higher catalytic activity compared to the parent TS-1, while maintaining excellent cycling stability. Further studies revealed that the synergistic effect of NH<sub>3</sub> and H<sub>2</sub>O molecules facilitated the selective cleavage of framework Si-O-Ti bonds, promoting the conversion of Ti(OSi)<sub>4</sub> species to Ti(OSi)<sub>3</sub>OH species. Furthermore, the condensation of surface silica hydroxyls, particularly silica hydroxyl nests, enhanced surface hydrophobicity. This straightforward DGC method provides an efficient approach for synthesizing titanosilicates enriched with highly active Ti(OSi)<sub>3</sub>OH species.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"390 ","pages":"Article 113595"},"PeriodicalIF":4.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143636866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Efficient synthesis of smaller crystal ZSM-5 zeolite in low TPAOH-to-silica ratio dry-gel hydrothermal system","authors":"Jiahui Hu, Hao Jiang, Yitong Guo, Jing Liu, Dan Xu, Guoxing Wu, Yanhui Yi, Zhongkui Zhao, Hongchen Guo","doi":"10.1016/j.micromeso.2025.113596","DOIUrl":"10.1016/j.micromeso.2025.113596","url":null,"abstract":"<div><div>The present study is related to the synthesis of nano-sized ZSM-5 zeolite with a dry-gel hydrothermal (DHT) method which is different from the known dry-gel conversion (DGC) method, for it allows the crystallization of the dry-gel in water or n-butylamine solution and the use of common autoclaves. The effects of TPAOH/SiO<sub>2</sub> ratio on the crystal size of ZSM-5 zeolite product, and the viability of synthesizing nano-sized ZSM-5 zeolite using the new method from a TPAOH-poor dry-gel with the aid of co-template n-butylamine are emphasized. Results show that, under the same TPAOH/SiO<sub>2</sub> ratio conditions, DHT synthesis is more beneficial for obtaining smaller crystal size ZSM-5 zeolite than the conventional hydrothermal (CHT) synthesis. The DHT synthesis can be implemented with a TPAOH-rich dry-gel (for example, TPAOH/SiO<sub>2</sub>≥0.15) by using simply water as crystallizing solution, to yield discrete nano-sized ZSM-5 zeolite (crystal size 70 nm), or with a TPAOH-poor dry-gel (for example, TPAOH/SiO<sub>2</sub> = 0.075) by using a concentrated NBA aqueous solution (for example, a solution contains 75 % NBA) as crystallizing solution, to yield aggregates of nano-sized ZSM-5 zeolite (primary particle size 200 nm). The nano-sized ZSM-5 zeolites synthesized by the DHT method are inclined to have larger mesoporous and macroporous volume. After being doped with zinc ions, they become promising catalysts for the aromatization of n-hexane (n-h).</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"390 ","pages":"Article 113596"},"PeriodicalIF":4.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rimita Bose , Volodymyr Bon , Thasleem B. Nanakkal , Parasuraman Selvam , Stefan Kaskel , Niket S. Kaisare
{"title":"Coadsorption of CO2/CH4 onto zeolitic imidazolate frameworks: The role of inner surface polarity, framework flexibility and topology","authors":"Rimita Bose , Volodymyr Bon , Thasleem B. Nanakkal , Parasuraman Selvam , Stefan Kaskel , Niket S. Kaisare","doi":"10.1016/j.micromeso.2025.113557","DOIUrl":"10.1016/j.micromeso.2025.113557","url":null,"abstract":"<div><div>The ZIF sub-family of metal-organic frameworks (MOFs) possesses considerable robustness, tunability of pores, flexibility. These properties make ZIFs potential materials for selective CO<sub>2</sub> adsorption from mixture of gases. However, the lack of experimental multi-component co-adsorption studies makes it challenging for translating the fundamental understanding towards large-scale separation applications. Hence, we focused on both single component adsorption and CO<sub>2</sub>/CH<sub>4</sub> co-adsorption measurements. The selected frameworks include ZIF-8, ZIF-90, ZIF-7, ZIF-11 and ZIF-71, which laid the foundation of understanding the influence of functional groups, structural flexibility, crystal size and topology on CO<sub>2</sub> selectivity in presence of CH<sub>4</sub>. The results indicate that polar functional group and gate-opening flexibility are a couple of key parameters to improve CO<sub>2</sub> selectivity for ZIFs. Topology of ZIFs, on the other hand, did not show a significant effect on CO<sub>2</sub> selectivity. The Ideal Adsorbed Solution Theory (IAST) is used to show the compatibility between the theoretical and experimental selectivity. The IAST exhibits mismatch for ZIF-90, indicates limitation of the theory in considering the thermodynamic analysis of framework-guest interactions. The present study highlights the factors influencing CO<sub>2</sub> selectivity in presence of CH<sub>4</sub> through both single and multi-component adsorption isotherms.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"390 ","pages":"Article 113557"},"PeriodicalIF":4.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Katarzyna Stawicka, Julia Gajewska, Maria Ziolek, Maciej Trejda
{"title":"The effect of SBA-15 doping with NbVOx and TaVOx on the extractive catalytic oxidative desulfurization of dibenzothiophene","authors":"Katarzyna Stawicka, Julia Gajewska, Maria Ziolek, Maciej Trejda","doi":"10.1016/j.micromeso.2025.113592","DOIUrl":"10.1016/j.micromeso.2025.113592","url":null,"abstract":"<div><div>Unsupported NbVO<sub>x</sub> and TaVO<sub>x</sub> mixed oxides as well as materials based on SBA-15 silica support were prepared, characterized and applied as catalysts for extractive catalytic oxidative desulfurization (ECODS) of dibenzothiophene (DBT). Properties of the materials obtained and the role of active centers and mesoporous support in the catalytic process were examined by low-temperature nitrogen physisorption, XRD, SEM-EDS, XPS, UV–Vis, chemisorption of pyridine combined with FT-IR spectroscopy as well as by test reactions, i.e. dehydration and dehydrogenation of 2-propanol and cyclization and dehydration of 2,5-hexanedione. The highest effectiveness of DBT removal from the oil phase, reaching up to 98 % within 15 min at 60 °C was shown by the supported materials prepared by impregnation method. The superior efficiency of DBT removal achieved for niobium containing samples could be related to its ability to interact with hydrogen peroxide towards the formation of reactive oxygen species.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"390 ","pages":"Article 113592"},"PeriodicalIF":4.8,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}