Microporous and Mesoporous Materials最新文献

{"title":"Advanced Ni(II)-Doped -ZIF-8 Nanoscale crystals: A breakthrough in efficient dihydropyrimidine synthesis and catalyst reusability with comprehensive structural characterization","authors":"Dara Muhammad Aziz,&nbsp;Dilshad Karim Hama","doi":"10.1016/j.micromeso.2025.113533","DOIUrl":"10.1016/j.micromeso.2025.113533","url":null,"abstract":"<div><div>Nickel(II) ions (Ni(II)) doped within the zinc-based metal-organic framework ZIF-8 have been demonstrated as highly effective heterogeneous catalysts for the three-component Biginelli condensation reaction. The Ni(10)-ZIF-8 catalyst achieved impressive yields of 96.16 % in ethanol within 100 min, demonstrating excellent selectivity under mild reaction conditions. The incorporation of Ni(II) ions into the ZIF-8 framework was accomplished via a room-temperature synthesis method, with optimal catalytic performance observed at a 10 % Ni doping level. The catalyst was characterized using XRD, SEM, FTIR, and TGA, confirming its high crystallinity and structural stability. Ni(10)-ZIF-8 displayed remarkable reusability, maintaining its catalytic efficiency over five consecutive cycles, with only a 20 % decrease in activity. These findings indicate that Ni(10)-ZIF-8 is not only a highly efficient and sustainable catalyst but also a promising candidate for large-scale applications in green chemistry. Additionally, the study highlights the impact of Ni doping on the catalytic efficiency and the importance of optimizing doping levels for enhanced performance.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"387 ","pages":"Article 113533"},"PeriodicalIF":4.8,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143162774","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":"Insight into the adsorption behaviors of siloxane on activated carbon fibers","authors":"Linhong Wen ,&nbsp;Jiahao Liu ,&nbsp;Junhao Wang ,&nbsp;Mengyan Wang ,&nbsp;Jianxiao Yang ,&nbsp;Yue Liu ,&nbsp;Xin Zhang","doi":"10.1016/j.micromeso.2025.113527","DOIUrl":"10.1016/j.micromeso.2025.113527","url":null,"abstract":"<div><div>A series of activated carbon fibers (ACFs) are employed to evaluate the adsorption capacity of octamethylcyclotetrasiloxane (D4). The pore structure and surface chemistry properties are well characterized, and the effects on D4 adsorption are explored. The results suggest that the viscose-based ACFs exhibit the highest dynamic adsorption capacity of 933 mg/g and static adsorption capacity of 656 mg/g at 25 °C. In particular, the D4 adsorption capacity on ACFs is related to the micropore structure of ACFs. In addition, the phenolic hydroxyl group of ACFs also play an important role in the adsorption process. Furthermore, the adsorption behavior obeyed the Freundlich model and that the diffusion of D4 in the pores rather than external diffusion is the rate-determining step during the mass transfer process at low temperature and low D4 concentration. More importantly, ACFs have abundant active sites, and the adsorption kinetics are dominated by adsorption onto active sites.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"387 ","pages":"Article 113527"},"PeriodicalIF":4.8,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143162777","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":"Novel preparation of amorphous aluminosilicates via amorphous borosilicates by B-to-Al exchange","authors":"Yuki Sada ,&nbsp;Shoko Miyagi ,&nbsp;Raquel Simancas ,&nbsp;Masato Yoshioka ,&nbsp;Tomoya Ishikawa ,&nbsp;Keita Nakao ,&nbsp;Yusuke Naraki ,&nbsp;Hiroki Yamada ,&nbsp;Seiya Shimono ,&nbsp;Koji Ohara ,&nbsp;Tsuneji Sano ,&nbsp;Tatsuya Okubo ,&nbsp;Toru Wakihara","doi":"10.1016/j.micromeso.2025.113529","DOIUrl":"10.1016/j.micromeso.2025.113529","url":null,"abstract":"<div><div>The preparation of precursor amorphous materials for zeolite synthesis is one of important units, which has a significant impact on zeolite crystallization behavior. In this study, we propose a novel preparation method to obtain amorphous aluminosilicates used for zeolite synthesis. It consists of in the precipitation of amorphous borosilicates followed by B-to-Al exchange, which is inspired by post-synthesis treatment performed in zeolites. Amorphous borosilicates prepared under different conditions, aluminosilicates obtained by B-to-Al exchange, and CHA zeolites synthesized using the amorphous aluminosilicates were studied by various microstructural analyses, including UV-Raman spectroscopy, solid MAS NMR, and High-energy X-ray total scattering (HEXTS)/pair distribution function (PDF) analysis. The interesting finding is that Si/B ratios in the first mixture composition affect the subsequent progress of B-to-Al exchange and zeolite synthesis steps. In addition, the amorphous aluminosilicates prepared from amorphous borosilicates by B-to-Al exchange led to a wide synthesis window of CHA zeolite such as the reduction of the alkali concentration and the synthesis time. These results suggest that the novel amorphous aluminosilicates prepared from amorphous borosilicates by B-to-Al exchange could become a promising raw material for optimizing zeolite synthesis.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"387 ","pages":"Article 113529"},"PeriodicalIF":4.8,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143162784","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":"Two-stage synthesis of Fe-UZM-35 zeolite promoted by Fenton's reagent and its application in hydroxylation of phenol","authors":"Jiulong Chen ,&nbsp;Mengqi Ding ,&nbsp;Hongwei Li ,&nbsp;Sheng Liu ,&nbsp;Xuefeng Long ,&nbsp;Dong Ji ,&nbsp;Guixian Li ,&nbsp;Peng Dong ,&nbsp;Xinhong Zhao","doi":"10.1016/j.micromeso.2025.113528","DOIUrl":"10.1016/j.micromeso.2025.113528","url":null,"abstract":"<div><div>The synthesis of UZM-35 zeolite suffers from long crystallization times (4–14 days), irregular product morphology, and low purity and crystallinity, which significantly limit the material's potential applications. In this study, Fe-UZM-35 zeolite was synthesized using a two-stage crystallization method to address these issues. Initially, Fenton's reagent was employed as both an iron source and a hydroxyl radical generator, taking advantage of the hydroxyl radical's ability to accelerate zeolite nucleation. The system was first microwave-heated at low temperatures to achieve rapid and uniform nucleation, followed by conventional heating at higher temperatures to promote uniform growth of the zeolite crystal nuclei. The effects of Fenton's reagent dosage, low-temperature pretreatment duration, and high-temperature crystallization time on the zeolite's crystallization process were thoroughly investigated. It was found that Fe-UZM-35 zeolite with high crystallinity could be obtained under the conditions of a H₂O₂/Fe^IIO ratio of 2.5, a 5-h low-temperature pretreatment, and a 3-day high-temperature crystallization period. Several Fe-UZM-35 catalysts with varying iron contents were synthesized under these optimized conditions. The catalysts crystallinity, morphology, pore structure, iron species distribution, and acid properties were characterized using XRD, SEM, N₂ physisorption, UV–Vis, H₂-TPR, and NH₃-TPD, respectively. Selected catalysts were evaluated for catalytic performance in the hydroxylation of phenol as a model reaction. Results showed that the catalytic activity of iron-based zeolites is influenced by multiple factors, with Fe-UZM-35 zeolites exhibiting higher relative crystallinity, surface area, Lewis acid density, and hydrophobicity delivering the best catalytic performance.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"387 ","pages":"Article 113528"},"PeriodicalIF":4.8,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143162776","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":"Abnormal adsorption properties of the MOF CALF-20 as revealed by water and methanol vapor sorption","authors":"Julia Duplessis-Kergomard,&nbsp;Meryem Saidi,&nbsp;Olinda Gimello,&nbsp;Bernard Fraisse,&nbsp;Fabrice Salles,&nbsp;Philippe Trens","doi":"10.1016/j.micromeso.2025.113525","DOIUrl":"10.1016/j.micromeso.2025.113525","url":null,"abstract":"<div><div>MOF CALF-20 has been employed in industry due to its hydrophobic properties, which are conducive to CO₂ capture. Nevertheless, additional characteristics of this porous material are worthy of investigation, including its mechanical properties and flexibility. When CALF-20 is subjected to water vapor, it exhibits a slight contraction, which may be attributed to its hydrophobic nature. Conversely, when CALF-20 adsorbs methanol, it exhibits a 30 % increase in volume. Furthermore, our findings indicate that the interactions between MOFs and water or methanol are dependent on the crystalline phase. The aforementioned interactions exhibit a range of values between −37.8 and −54 kJ mol⁻¹ in the case of water, whereas they consistently approach −53 kJ mol⁻¹ in the case of ethanol, irrespective of the crystalline phase. This has significant implications for methanol adsorption in water-saturated CALF-20. Our findings suggest that the water confined in the pores can be pushed out by the methanol flow, whereas this phenomenon does not occur in the case of water adsorption in CALF-20 that has already been filled with methanol. These findings pave the way to improvements in Sorption-Enhanced Reaction Process technology for pure methanol production from carbon dioxide, where selective sorbents are required for shifting the methanol production equilibrium.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"387 ","pages":"Article 113525"},"PeriodicalIF":4.8,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163918","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}

{"title":"Comparative study on adsorption performance of Pb(II) using fly ash-based mesoporous silica through sol-gel method with different aging temperature","authors":"Dandan Liu ,&nbsp;Shiyao Qin ,&nbsp;Huimin Qiao ,&nbsp;Xin Xing ,&nbsp;Kezhou Yan","doi":"10.1016/j.micromeso.2025.113523","DOIUrl":"10.1016/j.micromeso.2025.113523","url":null,"abstract":"<div><div>The preparation of mesoporous silica materials from fly ash for the adsorption of heavy metals represents a significant approach to resource utilization. In this study, the sol-gel process was employed to synthesize amino-functionalized mesoporous silica with varying pore structure properties (denoted as MS-NH₂-T, where T = 20 °C, 40 °C, and 90 °C) by controlling the aging temperature. The effects of adsorption conditions on the adsorption efficiency of Pb(II) were investigated, and the differences in the adsorption behavior of amino-functionalized mesoporous silica with distinct pore structures were compared and analyzed using typical adsorption isotherms, adsorption kinetics, and rate-limiting adsorption kinetics models. The results indicated variations in specific surface area (625 m² g⁻¹, 640 m² g⁻¹, and 345 m² g⁻¹), average pore size (3 nm, 7 nm, and 15 nm), and total pore volume (0.5 cm³ g⁻¹, 1.0 cm³ g⁻¹, and 1.3 cm³ g⁻¹) among the mesoporous silica synthesized at different aging temperatures. Following amino modification, Pb(II) can be adsorbed through mechanisms such as pore adsorption, electrostatic attraction, and complexation. The adsorption capacities of the amino-functionalized mesoporous silica with varying pore structures were found to be 330 mg g⁻¹, 303 mg g⁻¹, and 204 mg g⁻¹, respectively. Furthermore, the adsorption rate constant of the MS-NH₂-90 material, which features a larger pore size and volume, was determined to be 0.0290 and 0.0008, with a time to reach adsorption equilibrium of 60 min, outperforming the MS-NH₂-20 and MS-NH₂-40 materials under identical conditions (initial concentration of 300 mg L⁻¹). Overall, mesoporous silica with a larger specific surface area demonstrates a higher adsorption capacity, while materials with increased pore size and pore volume exhibit faster adsorption rates. The findings of this study will assist in the selection of the most appropriate amino-functionalized mesoporous silica materials for the adsorption of Pb(II), based on whether the emphasis is on adsorption rate or capacity.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"387 ","pages":"Article 113523"},"PeriodicalIF":4.8,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143162779","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":"On the hydrophobicity/hydrophilicity of hierarchically porous ZIFs","authors":"Eder Amayuelas ,&nbsp;Zhi Xu ,&nbsp;Le Li ,&nbsp;Paul Iacomi ,&nbsp;Yaroslav Grosu","doi":"10.1016/j.micromeso.2025.113513","DOIUrl":"10.1016/j.micromeso.2025.113513","url":null,"abstract":"<div><div>Among MOFs, zeolitic imidazolate frameworks (ZIFs) are particularly notable for their zeolite-like structures and microporous properties, which are crucial for gas separation, catalytic activities, and energy applications. However, their microporous nature can hinder diffusion in certain applications. Recent efforts have focused on incorporating mesoporosity into ZIFs, enhancing their properties for diffusion-limited processes. This raises a question on the hydrophobicity/hydrophilicity of the formed mesoporosity, which is crucial for the applicability of such hierarchical MOFs in terms of their transport and chemical properties. In this study, we investigate the hydrophobicity/hydrophobicity of various hierarchical meso-microporous samples of ZIF-8 MOF (<em>m</em>ZIF) by means of water intrusion-extrusion porosimetry. Different synthesis routes, precursor batches, and particle sizes were employed to evaluate the effects of mesoporosity on intrusion pressure, volume, and stability. The results reveal that while micropores of ZIF-8 maintain their hydrophobic nature, the mesopores are hydrophilic and are wetted by water spontaneously under ambient conditions. By this study, we demonstrate that the H₂O intrusion-extrusion technique represents an accurate technique to independently access the hydrophobicity of hierarchical meso-microporous MOFs.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"387 ","pages":"Article 113513"},"PeriodicalIF":4.8,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163919","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":"Vertically aligned mesoporous silica films bearing covalently bound tris(2,2′-bipyridyl)ruthenium(II) redox photocatalysts","authors":"Mahmoud Rahal ,&nbsp;Cheryl Karman ,&nbsp;Neus Vilà ,&nbsp;Christelle Despas ,&nbsp;Mariela Alicia Brites Helu ,&nbsp;Jaafar Ghanbaja ,&nbsp;Malik Sebbat ,&nbsp;Akshay Silswal ,&nbsp;Gediminas Jonusauskas ,&nbsp;Nathan McClenaghan ,&nbsp;Emmanuel Oheix ,&nbsp;Bénédicte Lebeau ,&nbsp;Morgan Cormier ,&nbsp;Jean-Philippe Goddard ,&nbsp;Alain Walcarius","doi":"10.1016/j.micromeso.2025.113524","DOIUrl":"10.1016/j.micromeso.2025.113524","url":null,"abstract":"<div><div>This work reports a strategy to prepare mesoporous silica films with preferential vertical alignment of pore channels with covalently attached tris(2,2′-bipyridyl)ruthenium(II) redox photocatalysts, <em>i.e.</em> [Ru(bpy)₂(bpy’)]²⁺ (prepared from a precursor grafting agent containing 2,2′-bipyridine (bpy) and derivatized 4,4′-dimethyl-2,2′-bipyridine (bpy’) units). This was achieved by the electrochemically assisted self-assembly of vertically-aligned mesoporous silica films containing varying amounts of azide groups and their subsequent derivatization by click coupling with an alkyne-bearing [Ru(bpy)₂(bpy’)]²⁺ reagent. The effectiveness of the functionalization processes was monitored by infrared spectroscopy, indicating a best compromise reached for an azide content large enough to immobilize a high content of [Ru(bpy)₂(bpy’)]²⁺ moieties, but not too large to avoid steric constraints and leading to lower yields of the click reaction. The structural integrity (hexagonal order and mesopore orientation) after functionalization was checked by transmission electron microscopy and grazing-incidence small-angle X-ray scattering. The films were generated on transparent indium-tin oxide electrodes and cyclic voltammetry experiments demonstrated a good electrochemical response via electron hopping between adjacent [Ru(bpy)₂(bpy’)]²⁺ moieties immobilized in the nanochannels, which was dependent on the functionalization level and proved stable upon repetitive potential cycling as a result of their covalent attachment to the silica walls. These films also exhibit luminescence, which can be exploited for photoelectrochemical applications, <em>e.g.</em>, detection by electrochemiluminescence or electrochemical regeneration of photocatalyst, as illustrated here from preliminary experiments.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"387 ","pages":"Article 113524"},"PeriodicalIF":4.8,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163661","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}

{"title":"Construction of PAC@Zeolite@GO composite with high adsorption capacity and environmentally friendly for defluoridation by synergistic effects","authors":"Ting Wang ,&nbsp;Juan Liu ,&nbsp;Ting Li ,&nbsp;Jinshui Mao ,&nbsp;Zhaoqi Shao ,&nbsp;Xiaocheng Li ,&nbsp;Sili Ren","doi":"10.1016/j.micromeso.2025.113521","DOIUrl":"10.1016/j.micromeso.2025.113521","url":null,"abstract":"<div><div>Toxic fluoride-containing industrial wastewater discharged from rare earth mining, coal, and metallurgical industries has been considered as one of the major problems threatening human health. Seeking ultra-high adsorption capacity, low secondary pollution and low-cost fluoride adsorption technologies from wastewater has been the goal of environmental remediation. In this study, based on a photo-catalytic reduction reaction, the polyaluminum chloride (PAC) and graphene oxide (GO) co-modified zeolite (PAC@Zeolite@GO composite) were synthesized for efficiently removing fluoride from wastewater. Under optimal conditions (pH = 3, t = 240 min, T = 298 K, m = 25 mg L⁻¹, C₀ = 450 mg L⁻¹), the adsorption capacity of PAC@Zeolite@GO composite toward fluoride was as high as ∼1264 mg g⁻¹. Even after 3 times of recycling, the adsorption capacity could still reach 978.3 mg g⁻¹. The fitting results of kinetics, isotherm and thermodynamics indicated that the adsorption process is an endothermic one, complies with the Langmuir isothermal adsorption and the pseudo-second-order kinetic model. The residual F⁻ after PAC@Zeolite@GO composite adsorption and dissolved Al³⁺ were as low as 0.69 mg L⁻¹ and 0.09 mg L⁻¹, which reached the drinking water standard. The prominent adsorption ability of PAC@Zeolite@GO composite was attributed to electrostatic adsorption, ion exchange, hydrogen bond and complexation reactions. Based on their efficient performance, the PAC@Zeolite@GO composite is expected to be an effective and environmentally friendly, low-cost adsorbent for the defluorination of wastewater.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"387 ","pages":"Article 113521"},"PeriodicalIF":4.8,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143162783","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":"Synthesis of MIL-101 embedded in SBA-16 functionalized with carboxyl groups as a catalyst for Knoevenagel reaction","authors":"Chunlai Liu ,&nbsp;Wei Wang ,&nbsp;Na Wang ,&nbsp;Jiaxin Fan ,&nbsp;Songlin Shi ,&nbsp;Peihang Shen ,&nbsp;Zelong Liu ,&nbsp;Jianglei Hu ,&nbsp;Fengwei Shi","doi":"10.1016/j.micromeso.2025.113522","DOIUrl":"10.1016/j.micromeso.2025.113522","url":null,"abstract":"<div><div>In this paper, carboxyl-functionalized silica (SBA-16-xC) was prepared by one-pot method using 2-cyanoethyltriethoxysilane (CTES) as a carboxylate precursor reagent and then MIL-101 functionalized composites (SBA-16-xC@MIL-101) were synthesized in situ by using carboxyl groups (-COOH) of the functionalized silica to adsorb chromium ions. The physicochemical properties of composites were characterized by Nitrogen adsorption/desorption, FT-IR, XPS, XRD, TG, SEM, TEM, and ¹³C NMR. That the cyano groups (-CN) were completely converted to carboxyl groups and MIL-101 was successfully prepared in the pores and surface of SBA-16-xC. SBA-16-1C@MIL-101 was employed as a catalyst for the Knoevenagel reaction was carried out using benzaldehyde and malononitrile as raw materials and water as a solvent. The reaction rate gradually increased with increasing reaction temperature. At a reaction temperature of 50 °C, the conversion of benzaldehyde reached 100 % after 50 min with an average reaction rate of 9.03 × 10⁻³ mol/(L·min). In recycling experiments, SBA-16-1C@MIL-101 did not show any significant change in catalytic performance after five cycles.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"387 ","pages":"Article 113522"},"PeriodicalIF":4.8,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163915","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}