Microporous and Mesoporous Materials最新文献

Improved adsorption and photocatalytic activity of ZSM-5-loaded fly ash–TiO2–Cu hybrid composites for crystal violet removal under visible-solar light irradiation 负载zsm -5的粉煤灰- tio2 - cu杂化复合材料在可见光-太阳照射下对结晶紫的吸附和光催化活性的提高

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-10-08 DOI: 10.1016/j.micromeso.2025.113892

Ridhima Sharma , Sanghamitra Barman , Bonamali Pal

{"title":"Improved adsorption and photocatalytic activity of ZSM-5-loaded fly ash–TiO2–Cu hybrid composites for crystal violet removal under visible-solar light irradiation","authors":"Ridhima Sharma , Sanghamitra Barman , Bonamali Pal","doi":"10.1016/j.micromeso.2025.113892","DOIUrl":"10.1016/j.micromeso.2025.113892","url":null,"abstract":"<div><div>In the present investigation, Cu photo-deposited fly ash–TiO2 (FT-Cu1) composites were synthesized. The prepared composite was modified with 1 wt%, 3 wt%, and 5 wt% of ZSM-5 zeolite and named as 1ZFT-Cu1, 3ZFT-Cu1, and 5ZFT-Cu1, respectively, for the removal of crystal violet dye. Experiments were conducted to evaluate the performance of the ZFT-Cu1 composites (1, 3, and 5 wt% ZSM-5 loadings) for the adsorption and photocatalytic degradation of crystal violet under visible and solar light. Structural and optical characterizations were performed using UV–VIS DRS, FE-SEM, XRD, FTIR, and BET surface area analysis. The results demonstrated enhanced crystallinity, decreased agglomeration, and improved visible-light absorption due to incorporation of ZSM-5 zeolite into the FT-Cu1 composite. Among the modified composites, the 3ZFT-Cu1 composite (3 wt% ZSM-5 loading) showed the highest photocatalytic activity, achieving 98 % removal of CV dye (Qe = 27 mg/g) under visible light and 95 % removal (Qe = 20.24 mg/g) under solar light at catalyst dose of 5 mg, dye concentration of 5 mg/L, contact time of 180 min, and pH 9. The adsorption data were well-fitted to Freundlich isotherms confirming multilayer coverage, and the kinetics adhered to a pseudo-first-order model. The enhanced efficiency is attributed to the synergistic effects of Cu doping, porous ZSM-5, and fly ash support, which improved light absorption and dye adsorption. Furthermore, 3ZFT-Cu1 retained 84 % degradation efficiency after five cycles, confirming good stability and reusability. The photodecomposition pathway of CV dye was identified through free radical trapping using hole scavengers, confirming its visible-light-active potential for dye-based wastewater treatment.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"400 ","pages":"Article 113892"},"PeriodicalIF":4.7,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263921","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}

引用次数: 0

Energy of transition from alpha-quartz for all regular zeolite frameworks calculated explicitly with periodic density functional method 用周期密度泛函方法显式计算了所有规则沸石骨架从α -石英的转变能

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-10-04 DOI: 10.1016/j.micromeso.2025.113873

Stoyan P. Gramatikov, Georgi N. Vayssilov

{"title":"Energy of transition from alpha-quartz for all regular zeolite frameworks calculated explicitly with periodic density functional method","authors":"Stoyan P. Gramatikov, Georgi N. Vayssilov","doi":"10.1016/j.micromeso.2025.113873","DOIUrl":"10.1016/j.micromeso.2025.113873","url":null,"abstract":"<div><div>As an unambiguous measure for the stability of the zeolite frameworks, the present work reports the values of the energy of transition from alpha-quartz for all 245 regular zeolite frameworks using explicitly periodic density functional calculations. The calculations are performed for completely silica structures. The calculated energy values fit very well to the available experimental data for the enthalpies of transition of the structures with lower stability, while for more stable frameworks the deviations are larger. Considering all studied zeolite frameworks, one cannot observe correlation between the stability of the structure and its framework density, but for silica zeolites there is a rough trend that a decrease of the framework density by 1.0 T atom per 1000 Å3, may be interpreted as increase of the energy of transition of the corresponding silicate zeolite framework by about 1.0 ± 0.3 kJ/mol per T atom. The reported results may be useful as a measure of the relative stability of the zeolite framework, which is important for their synthesis, transformations, treatments and applications.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"400 ","pages":"Article 113873"},"PeriodicalIF":4.7,"publicationDate":"2025-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263922","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}

引用次数: 0

Tailoring nanosized ZSM-5 through seed-induced solvent-free crystallization for methanol-to-olefins conversion 通过种子诱导无溶剂结晶为甲醇-烯烃转化量身定制纳米ZSM-5

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-10-02 DOI: 10.1016/j.micromeso.2025.113881

Qi Zhou, Qiong Zhang, Ruoling Sun, Bo Liu, Zongqing Guo, Yuan Gao, Rongli Jiang

{"title":"Tailoring nanosized ZSM-5 through seed-induced solvent-free crystallization for methanol-to-olefins conversion","authors":"Qi Zhou, Qiong Zhang, Ruoling Sun, Bo Liu, Zongqing Guo, Yuan Gao, Rongli Jiang","doi":"10.1016/j.micromeso.2025.113881","DOIUrl":"10.1016/j.micromeso.2025.113881","url":null,"abstract":"<div><div>ZSM-5 catalysts are central to the methanol-to-olefins (MTO) process, yet their conventional hydrothermal synthesis requires excessive solvents and organic templates, hindering sustainability and economic feasibility. Here, we develop a seed-assisted, solvent-free synthesis strategy that precisely controls nucleation to produce nanosized ZSM-5 with hierarchical porosity and tunable acidity. Introducing 5–20 wt% of preformed seeds significantly accelerates nucleation, reduces crystal size from 15 μm to submicron scale of 0.4 μm, and enhances both crystallinity and mesoporosity while preserving phase purity. Among these, the 10 wt% seeded sample (ZA-10) achieves the optimal balance between crystal refinement and textural improvement. Systematic aluminum tuning at a Si/Al ratio of 30 further optimizes acid site distribution and pore structure, yielding a catalyst with the highest density of weak acid sites and largest mesopore volume. Consequently, ZA-10 demonstrates outstanding catalytic stability, maintaining over 90 % methanol conversion for 94 h and delivering 32.6 % propylene selectivity. In contrast, unseeded catalysts rapidly deactivate due to their larger crystal size and limited porosity. These findings confirm that integrating seed-assisted nucleation with controlled aluminum incorporation effectively overcomes key limitations of solvent-free ZSM-5 synthesis, providing a eco-friendly pathway toward high-performance MTO catalysts.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"400 ","pages":"Article 113881"},"PeriodicalIF":4.7,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219319","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}

引用次数: 0

Effect of the porous structure and the presence of amino groups on selective adsorption of methane, ethane, and carbon dioxide on zirconium-based UiO-66 structures 多孔结构和氨基的存在对锆基UiO-66结构对甲烷、乙烷和二氧化碳选择性吸附的影响

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-10-01 DOI: 10.1016/j.micromeso.2025.113880

Gregory S. Deyko , Vadim V. Vergun , Leonid A. Kravtsov , Gennadiy I. Kapustin , Lev M. Glukhov , Oleg G. Sinyashin , Leonid M. Kustov

{"title":"Effect of the porous structure and the presence of amino groups on selective adsorption of methane, ethane, and carbon dioxide on zirconium-based UiO-66 structures","authors":"Gregory S. Deyko , Vadim V. Vergun , Leonid A. Kravtsov , Gennadiy I. Kapustin , Lev M. Glukhov , Oleg G. Sinyashin , Leonid M. Kustov","doi":"10.1016/j.micromeso.2025.113880","DOIUrl":"10.1016/j.micromeso.2025.113880","url":null,"abstract":"<div><div>UiO-66 and NH2-UiO-66 materials with different porosity (microporous and mesoporous) prepared by solvothermal and microwave synthesis were compared in methane, ethane, and CO2 adsorption for the first time. Both microporous samples with or without amino groups exhibit significantly higher methane, ethane, and carbon dioxide uptakes (up to 30 %) compared to the corresponding mesoporous materials. Highest uptake of ethane and methane (6.75 mmol/g and 3.59 mmol/g at 20 atm, respectively) and carbon dioxide (13.89 mmol/g at 30 atm) were obtained on microporous micro-UiO-66 sample, while on its amino-functionalized microporous analog micro-NH2-UiO-66 the uptake values for all 3 mentioned gases are somewhat lower (4.46 mmol/g of ethane, 2.44 mmol/g of methane at 20 atm and 6.96 mmol/g of carbon dioxide at 30 atm). Adsorption of both hydrocarbons and carbon dioxide decreases in the following order: micro-UiO-66 > meso-UiO-66 > micro-NH2-UiO-66 > meso-NH2-UiO-66. The ideal selectivity and IAST selectivity were calculated for the first time for these materials. The maximum ideal selectivity was obtained for the micro-UiO-66 sample (3.17 : 1 for C2H6/CH4 at 5 atm). The best IAST selectivity was found for the micro-UiO-66 sample (7.94 : 1 for C2H6/CH4 at 15 atm), i.e. UiO-66 is a good candidate for natural gas separation. The presence of amino groups significantly enhances the IAST selectivity for the carbon dioxide/methane pair.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"400 ","pages":"Article 113880"},"PeriodicalIF":4.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263918","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}

引用次数: 0

Durability of Ag-Beta against reduction conditions and steam treatment for HC trap ag - β抗还原条件和HC疏水阀蒸汽处理的耐久性

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-09-29 DOI: 10.1016/j.micromeso.2025.113871

Kohei Kume , Motomu Sakai , Masahiko Matsukata

{"title":"Durability of Ag-Beta against reduction conditions and steam treatment for HC trap","authors":"Kohei Kume , Motomu Sakai , Masahiko Matsukata","doi":"10.1016/j.micromeso.2025.113871","DOIUrl":"10.1016/j.micromeso.2025.113871","url":null,"abstract":"<div><div>Hydrocarbon (HC) adsorption under humid conditions and long-term stability under exhaust gas environments remain critical challenges for HC trap materials. In this study, Ag-exchanged Beta zeolite (Ag-Beta) was evaluated as a potential HC adsorbent under wet conditions, focusing on its redox and hydrothermal durability. Propylene was used as a model HC in the presence of 12.7 % H2O to assess adsorption and desorption behaviors. Ag-Beta demonstrated a high propylene adsorption capacity and distinct desorption peak at ∼670 K, even under humid conditions, outperforming other ion-exchanged Beta samples. However, Ag+ in Ag-Beta was found to be susceptible to reduction and steam-induced destabilization, resulting in the formation of Ag nanoclusters (Agnδ+) and Ag aggregation, even under oxidizing atmospheres. Oxidative treatment could only partially restore the original performance. UV–vis and H2-TPR analyses revealed that these irreversible changes in Ag species were key contributors to performance degradation. Furthermore, steam treatment altered Ag + states primarily through direct interaction with H2O, rather than dealumination of the zeolite framework.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"399 ","pages":"Article 113871"},"PeriodicalIF":4.7,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217326","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}

引用次数: 0

Water-induced CO2 adsorption in ZIF-8: Insights from experiments and advanced Monte Carlo simulations 水诱导的二氧化碳吸附在ZIF-8：从实验和先进的蒙特卡罗模拟的见解

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-09-29 DOI: 10.1016/j.micromeso.2025.113842

Anastasios Gotzias, Charitomeni Veziri, George Theodorakopoulos, George Romanos

{"title":"Water-induced CO2 adsorption in ZIF-8: Insights from experiments and advanced Monte Carlo simulations","authors":"Anastasios Gotzias, Charitomeni Veziri, George Theodorakopoulos, George Romanos","doi":"10.1016/j.micromeso.2025.113842","DOIUrl":"10.1016/j.micromeso.2025.113842","url":null,"abstract":"<div><div>Water usually inhibits CO<math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math> capture in porous solids by competing for preferential adsorption sites, but under certain conditions it can actually increase uptake. CO<math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math> isotherms recorded at 303 K for dry and water-loaded ZIF-8 show that pre-adsorbed water markedly enhances the framework’s CO<math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math> capacity. To probe this effect, we ran Grand Canonical Monte Carlo (GCMC) simulations of CO<math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math> in ZIF-8 containing a fixed amount of water, considering two “gate-open” framework conformations of the imidazolate linkers. The simulations reveal that water clusters partially fill the pores, creating narrow interfacial pockets where CO<math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math> preferentially adsorbs. Because these pockets are hard to sample with standard GCMC moves, we employed continuous fractional component Monte Carlo (CFC-MC), which inserts and removes CO<math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math> gradually. This enhanced sampling approach accurately reproduced the experimental isotherms and revealed how water-induced adsorption and framework conformation jointly influence behavior in hydrophobic porous crystals. The proposed mechanism may play a key role in the development of emerging direct air capture (DAC) technologies for efficient atmospheric CO<math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math> removal.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"400 ","pages":"Article 113842"},"PeriodicalIF":4.7,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219318","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}

引用次数: 0

Direct production of high-purity ethylene from ternary C2 gas mixtures with a robust Al-based metal–organic framework 直接生产高纯度乙烯的三元C2气体混合物与强大的铝基金属有机框架

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-09-29 DOI: 10.1016/j.micromeso.2025.113879

Nawab Zada , Donghui Jo , Donghyun Kim , Ji Woong Yoon , Su-Kyung Lee , Kyung Ho Cho , U-Hwang Lee

{"title":"Direct production of high-purity ethylene from ternary C2 gas mixtures with a robust Al-based metal–organic framework","authors":"Nawab Zada , Donghui Jo , Donghyun Kim , Ji Woong Yoon , Su-Kyung Lee , Kyung Ho Cho , U-Hwang Lee","doi":"10.1016/j.micromeso.2025.113879","DOIUrl":"10.1016/j.micromeso.2025.113879","url":null,"abstract":"<div><div>Developing adsorbents that facilitate the separation of high-purity ethylene (C2H4, >99.9 %) directly from C2 ternary gas mixtures has become increasingly imperative for reducing separation costs in the petrochemical industry. However, the physicochemical properties of C2H4 are consistently positioned at an intermediate level between those of ethane (C2H6) and acetylene (C2H2), posing significant challenges in designing suitable adsorbents. In this context, we present the aluminum-based metal–organic framework adsorbent, CAU-1, which demonstrates preferential adsorption capabilities towards C2H6 and C2H2 compared to C2H4. This results in good selectivity values of C2H6/C2H4 (1.46) and C2H2/C2H4 (1.44). The dynamic breakthrough experiment indicated the potential for one-step production of high-purity C2H4 from ternary C2 gas mixtures utilizing CAU-1, achieving a productivity of 0.43 mmol g−1. Furthermore, computational simulations revealed that its separation efficacy is attributed to multiple interactions with C2H6 and C2H2, facilitated by C−H···O interactions associated with the abundant methoxy and hydroxide in the Al8 cluster of the CAU-1 structure.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"400 ","pages":"Article 113879"},"PeriodicalIF":4.7,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145189672","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}

引用次数: 0

At scale synthesis and granulation of water-based aluminium fumarate metal-organic framework - crystallinity, textural properties, and structural integrity 水基富马酸铝金属有机骨架的规模化合成和造粒——结晶度、结构性质和结构完整性

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-09-28 DOI: 10.1016/j.micromeso.2025.113878

Mukondeleli K. Muluvhu , Orevaoghene Eterigho-Ikelegbe , Thembelihle Mehlo , Nicholas Musyoka , Michael O. Daramola

{"title":"At scale synthesis and granulation of water-based aluminium fumarate metal-organic framework - crystallinity, textural properties, and structural integrity","authors":"Mukondeleli K. Muluvhu , Orevaoghene Eterigho-Ikelegbe , Thembelihle Mehlo , Nicholas Musyoka , Michael O. Daramola","doi":"10.1016/j.micromeso.2025.113878","DOIUrl":"10.1016/j.micromeso.2025.113878","url":null,"abstract":"<div><div>The large-scale synthesis and shaping of metal-organic frameworks (MOFs) for industrial applications is a growing research focus and preserving the intrinsic properties of MOF powder during shaping is crucial for practical implementation. Herein, aluminium fumarate (Al-fum) MOF granules were produced with a 95 wt% MOF powder to 5 wt% binder ratio and the impacts of poly(vinyl alcohol) (PVA) and poly(vinylidene fluoride) (PVDF) binders on the properties of the shaped MOF granules were compared. The shaped granules were characterized for crystallinity, morphology, thermal stability, functional groups, textural properties, and mechanical strength. XRD confirmed that Al-fum MOF retained its crystallinity after granulation with PVA. MOF powder BET surface area of 952.23 m2/g was obtained using tap water, and 1117.95 m2/g with deionized water (DIW) as the solvent for synthesis. The binder additives resulted in 6.8 % loss in BET surface area upon granulation. Specifically, the PVA binder confers better mechanical strength, withstanding a load of 20 N, whereas Al-fum MOF/PVDF granules endured only 11 N. This study successfully demonstrated the feasibility of producing water-based Al-fum MOF powder at scale and industrial shaping it into granules while maintaining crystallinity, porosity, functionality, and sufficient mechanical stability.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"400 ","pages":"Article 113878"},"PeriodicalIF":4.7,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263919","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}

引用次数: 0

Indirect oxidative carbonylation of methanol to dimethyl carbonate on Pd/NaY: high stability by ethylenediamine as polydentate ligands 乙二胺作为多齿配体在Pd/NaY上间接氧化羰基化制碳酸二甲酯：高稳定性

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-09-25 DOI: 10.1016/j.micromeso.2025.113875

Qiuyun Huang, Shiyu Liu, Weihua Shen, Yunjin Fang

{"title":"Indirect oxidative carbonylation of methanol to dimethyl carbonate on Pd/NaY: high stability by ethylenediamine as polydentate ligands","authors":"Qiuyun Huang, Shiyu Liu, Weihua Shen, Yunjin Fang","doi":"10.1016/j.micromeso.2025.113875","DOIUrl":"10.1016/j.micromeso.2025.113875","url":null,"abstract":"<div><div>A series of Pd/NaY catalyst with different Pd complexes (Pd(NH3)4/NaY, Pd(en)2/NaY, Pd(py)2/NaY and Pd(NH2CH2COO)2/NaY) were prepared as catalysts for the indirect oxidative carbonylation of methanol to dimethyl carbonate (DMC). The Pd complex ([Pd(en)2]2+, [Pd(py)2]2+ and Pd(NH2CH2COO)2) were produced as new active components. Among them, the Pd(en)2/NaY catalyst performed best with the CO conversion of 41.7 %, the DMC selectivity based on CO of 99.8 % for a 100 h test. On the other hand, the CO conversion decreased from 41.9 % (1 h) to 22 % on Pd(NH3)4/NaY catalyst within 56 h reaction. It was found that the Pd(en)2/NaY catalyst had homogeneous and steady clusters, which can be attributed to interactions between the ethylenediamine ligands and Pd clusters. This work not only explained the deactivation of Pd/NaY catalyst, but also provide a useful method to stabilize catalysts.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"399 ","pages":"Article 113875"},"PeriodicalIF":4.7,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217327","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}

引用次数: 0

Nano-sized seeds induced synthesis of ZSM-58 membranes for continuous separation of CO2 纳米种子诱导合成了用于CO2连续分离的ZSM-58膜

IF 4.7 3区材料科学

Microporous and Mesoporous Materials Pub Date : 2025-09-25 DOI: 10.1016/j.micromeso.2025.113877

Fengming Mo , Tao Huang , Jinqiang Peng , Yaoyao Shen , Ting Wu , Yuqing Li , Fei Zhang , Xiangshu Chen , Hidetoshi Kita

{"title":"Nano-sized seeds induced synthesis of ZSM-58 membranes for continuous separation of CO2","authors":"Fengming Mo , Tao Huang , Jinqiang Peng , Yaoyao Shen , Ting Wu , Yuqing Li , Fei Zhang , Xiangshu Chen , Hidetoshi Kita","doi":"10.1016/j.micromeso.2025.113877","DOIUrl":"10.1016/j.micromeso.2025.113877","url":null,"abstract":"<div><div>ZSM-58 membranes were successfully prepared using nanosized ZSM-58 crystals as seeds via a secondary growth method. The effects of various synthesis conditions, including temperature and time, were systematically investigated to elucidate their influence on crystalline structure and morphology. The performance of the membranes synthesized by nano-crystal seeding is superior to that of the membranes synthesized by micro-crystal seeding. The results demonstrate that the ZSM-58 membrane exhibits high selectivity for CO2/CH4 (142.40), CO2/N2 (28.62) and CO2/CO (13.79). Additionally, the CO2 permeance values for binary gas mixtures are 2.56 × 10−7 mol m−2 s−1·Pa−1, 2.31 × 10−7 mol m−2 s−1·Pa−1 and 2.40 × 10−7 mol m−2 s−1·Pa−1, respectively. Furthermore, under continuous operation for 100 h with an equimolar gas mixture, the membrane's separation performance remains stable, with CO2 permeability and CO2/CH4 selectivity values of 2.42 × 10−7 mol m−2 s−1·Pa−1 and 141.53, respectively. These findings indicate that the ZSM-58 zeolite membrane possesses excellent long-term stability and holds significant potential for industrial CO2 removal applications.</div></div>","PeriodicalId":392,"journal":{"name":"Microporous and Mesoporous Materials","volume":"399 ","pages":"Article 113877"},"PeriodicalIF":4.7,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217324","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}

引用次数: 0