Applied Catalysis A: General最新文献

Exploring the bifunctional role of Pd/ZrO2-TiO2 in the production of secondary amines via reductive amination of furfural 探索Pd/ZrO2-TiO2在糠醛还原胺化生产仲胺中的双功能作用

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-18 DOI: 10.1016/j.apcata.2025.120455

Alex A. Fernández-Andrade , John A. Vergara , Daviel Gómez , Daniela González-Vera , Cristian H. Campos , Joan M. Rodríguez-Díaz , Luis E. Arteaga-Pérez

{"title":"Exploring the bifunctional role of Pd/ZrO2-TiO2 in the production of secondary amines via reductive amination of furfural","authors":"Alex A. Fernández-Andrade , John A. Vergara , Daviel Gómez , Daniela González-Vera , Cristian H. Campos , Joan M. Rodríguez-Díaz , Luis E. Arteaga-Pérez","doi":"10.1016/j.apcata.2025.120455","DOIUrl":"10.1016/j.apcata.2025.120455","url":null,"abstract":"<div><div>Environmental concerns and the pressing need for sustainable technologies have increased the interest in furfural (FUR) amination as an environmentally friendly alternative to current petroleum-based amination processes. Here we systematically investigate the bifunctional effect of Pd/ZrO<sub>2</sub>-TiO<sub>2</sub> for the one-pot reductive amination of FUR with aniline (ANI) using H<sub>2</sub> as the reducing agent. The structural characterization of Pd/ZrO<sub>2</sub>-TiO<sub>2</sub> indicated Ti atom substitutions by Zr, highly dispersed Zr sites, and modulated acidity. The Pd/ZrO<sub>2</sub>-TiO<sub>2</sub> catalyst was active and stable for converting FUR into N-furfurylaniline (FFA) following a sequential reaction map, involving the formation of an intermediate imine (IME), with subsequent hydrogenation. The water formed in the first reaction step does not interfere in the reaction performance as confirmed by FTIR-ATR <em>in situ</em> measurements. Finally, the effectiveness of the catalyst was explained by the presence of acid sites which enhance C<img>O and N = H activation, with subsequent hydrogenation promoted by Pd<sup>0</sup> sites.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120455"},"PeriodicalIF":4.7,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663185","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}

引用次数: 0

In-situ growth of NiFe-LDH/fluoride heterostructures on FeN4/C for bifunctional oxygen electrocatalysis 双功能氧电催化在FeN4/C上原位生长NiFe-LDH/氟化物异质结构

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-16 DOI: 10.1016/j.apcata.2025.120454

Jie Yang , Lixia Ma , Yuqi Zhang , Xuqian Zhao , Shouren Zhang , Luo Huang , Yunpeng Fang , Xiaojie Zhou , Jianghao Kang , Ruibin Jiang

{"title":"In-situ growth of NiFe-LDH/fluoride heterostructures on FeN4/C for bifunctional oxygen electrocatalysis","authors":"Jie Yang , Lixia Ma , Yuqi Zhang , Xuqian Zhao , Shouren Zhang , Luo Huang , Yunpeng Fang , Xiaojie Zhou , Jianghao Kang , Ruibin Jiang","doi":"10.1016/j.apcata.2025.120454","DOIUrl":"10.1016/j.apcata.2025.120454","url":null,"abstract":"<div><div>The design of low-cost and highly efficient bifunctional electrocatalyst towards oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is challengeable, which limits the commercial application of rechargeable zinc-air battery. Herein, an efficient ORR and OER bifunctional electrocatalyst (NiFe-LDH/F<sub>x</sub>−FeN<sub>4</sub>/C) is composed of nickel/iron-based heterostructures sparsely grown on carbon black (CB) with single FeN<sub>4</sub> sites. The NiFe-LDH/F<sub>x</sub><strong>−</strong>FeN<sub>4</sub>/C electrocatalysts are prepared through the pyrolysis of hemin chloride adsorbed on CB, followed by in-situ hydrothermal growth of NiFe-LDH/F<sub>x</sub> heterostructures. The NiFe-LDH/F<sub>x</sub> heterostructures are composed of NiFe-LDH, (NH<sub>4</sub>)<sub>3</sub>FeF<sub>6</sub>, and NiF<sub>2</sub>. The elevated valence states of Fe and Ni in heterostructures significantly increase the OER activity. The mesopores and large pores of the NiFe-LDH/F<sub>x</sub><strong>−</strong>FeN<sub>4</sub>/C facilitate the exposure of active sites and enhance mass transfer. These features contribute to the outstanding bifunctional activity of NiFe-LDH/F<sub>x</sub><strong>−</strong>FeN<sub>4</sub>/C, achieving a half-wave potential of 0.906 V for the ORR, an OER overpotential of 246 mV at 10 mA cm<sup>−2</sup>, and an extremely small voltage gap of 0.57 V. Additionally, the NiFe-LDH/F<sub>x</sub><strong>−</strong>FeN<sub>4</sub>/C-based RZAB also exhibits a peak power density of 209 mW cm<sup>−2</sup> and charging/discharging cycling stability for 445 h. This work establishes a novel strategy for the preparation of highly efficient bifunctional electrocatalysts through in-situ growth and heterostructure engineering.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120454"},"PeriodicalIF":4.7,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655561","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}

引用次数: 0

Cu-MOF-derived Cu/C catalysts via solvent polarity engineering with renewable ligand for efficient hydrogenation of levulinic acid to γ-valerolactone 基于可再生配体的Cu- mof衍生Cu/C催化剂的高效乙酰丙酸加氢制备γ-戊内酯

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-15 DOI: 10.1016/j.apcata.2025.120453

Weimeng Cai , Haojie Du , Erju Wang , Yuting Qiang , Kunhong Hu , Jianhua Guo

{"title":"Cu-MOF-derived Cu/C catalysts via solvent polarity engineering with renewable ligand for efficient hydrogenation of levulinic acid to γ-valerolactone","authors":"Weimeng Cai , Haojie Du , Erju Wang , Yuting Qiang , Kunhong Hu , Jianhua Guo","doi":"10.1016/j.apcata.2025.120453","DOIUrl":"10.1016/j.apcata.2025.120453","url":null,"abstract":"<div><div>The synthesis of value-added chemicals from renewable biomass is becoming increasingly important in the transition to a sustainable and low-carbon energy system. Herein, we demonstrate a solvent-polarity modulation strategy to engineer biomass-derived Cu-MOF using 2,5-furandicarboxylic acid (FDCA) as a renewable ligand, where tailored β/α ratios via Kamlet-Taft parameters balance nucleation-growth kinetics to optimize textural properties. Pyrolyzed Cu-MOF at 500 °C under a nitrogen atmosphere yield the Cu/C catalysts, which were subsequently employed in the selective hydrogenation of levulinic acid (LA) to γ-valerolactone (GVL). Among the various solvents used, the Cu-MOF precursor synthesized in a mixed solvent of methanol and N, N-dimethylformamide (DMF) demonstrated the highest catalytic performance, outperforming those synthesized in other solvents. This highlights the significant impact of solvent selection on the structure of Cu-MOF, which in turn affects their hydrogenation activity. Advanced characterization confirming that the uniform Cu dispersion (confirmed by HRTEM mapping) and Cu⁰/Cu⁺ electronic synergy (via Cu Auger analysis) enhanced hydrogenation performance. Additionally, the biomass-derived catalysts exhibited excellent durability. Overall, this research provides a promising approach to develop highly efficient catalysts using renewable ligands and demonstrates the potential of regulating catalyst properties through the strategic selection of solvents, as informed by Kamlet-Taft parameters.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120453"},"PeriodicalIF":4.7,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144665524","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}

引用次数: 0

Superb three-dimensional porous-structured metal foam-supported Ni/Ce/Al-CF ensemble as an active structured catalyst for hydrogen production via methanol decomposition 极好的三维多孔结构金属泡沫支撑Ni/Ce/Al-CF系综作为甲醇分解制氢的活性结构催化剂

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-13 DOI: 10.1016/j.apcata.2025.120450

Lijie Fu , Yong Men , Shuya Wu , Shuyi Xu , Guohong Wang , Chongchong Kong , Jinguo Wang , Feng Shi , Zhenrong Yan , Xuelong Miao

{"title":"Superb three-dimensional porous-structured metal foam-supported Ni/Ce/Al-CF ensemble as an active structured catalyst for hydrogen production via methanol decomposition","authors":"Lijie Fu , Yong Men , Shuya Wu , Shuyi Xu , Guohong Wang , Chongchong Kong , Jinguo Wang , Feng Shi , Zhenrong Yan , Xuelong Miao","doi":"10.1016/j.apcata.2025.120450","DOIUrl":"10.1016/j.apcata.2025.120450","url":null,"abstract":"<div><div>A series of metal foam-supported Ni-based catalysts-monometallic Ni-CF, bimetallic Ni/Ce-CF, Ni/Al-CF and trimetallic Ni/Ce/Al-CF-were prepared by modified wet chemical etching (MWCE) and employed for hydrogen production via methanol decomposition (MD) in the temperature range of 200–325 ℃. Among those catalysts, the 2Ni/3Ce/3Al-Cu foam (CF) catalyst shows the superior catalytic performance for hydrogen production, achieving a remarkable activity of almost complete methanol conversion (99.3 %) and high H<sub>2</sub> selectivity of 91.8 % at 300 ℃. Moreover, the performance of 2Ni/3Ce/3Al-CF catalyst remained stable during the stability test for up to 40 h at 275 ℃. SEM and BET characterization show that etched copper foam can remarkably enlarge the specific surface area of the structured catalyst, provide more active sites, and enhance its catalytic activity. The strong interaction among Ni, Ce and Al induce the synergistic effect by creating abundant oxygen vacancies in the trimetallic system as evidenced by XPS. H<sub>2</sub>-TPR and XPS further revealed a crucial balance between reducibility and metal-support interactions: Al-containing catalysts like 2Ni/3Ce/3Al-CF exhibit higher reduction thresholds and confirming the role of Al in stabilizing oxidized Ni species via strong metal-support interactions. And CH<sub>3</sub>OH-TPD analysis indicated the catalyst had much higher low-temperature hydrogen production than other catalysts because of the synergistic effect of three metals, consistent with the catalyst activity test results. The developed strategy may provide insights into the development of the design principles for high-performance structured catalysts for hydrogen production via methanol decomposition.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120450"},"PeriodicalIF":4.7,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632318","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}

引用次数: 0

Ce3+-incorporated HZSM-5 as efficient catalysts with rich-strong Brønsted acid sites for cyclohexene hydration Ce3+-掺入HZSM-5作为环己烯水化的高效催化剂，具有丰富的强Brønsted酸位

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-13 DOI: 10.1016/j.apcata.2025.120451

Hefang Wang , Shijiao Hao , Hui Jiang, Xiaofei Ma, Hashim Khan, Jingwei Liu, Weiqian Qi

{"title":"Ce3+-incorporated HZSM-5 as efficient catalysts with rich-strong Brønsted acid sites for cyclohexene hydration","authors":"Hefang Wang , Shijiao Hao , Hui Jiang, Xiaofei Ma, Hashim Khan, Jingwei Liu, Weiqian Qi","doi":"10.1016/j.apcata.2025.120451","DOIUrl":"10.1016/j.apcata.2025.120451","url":null,"abstract":"<div><div>A series of Ce<sup>3+</sup> incorporated HZSM-5 catalysts were prepared by wet impregnation method for cyclohexene hydration. XRD, Vacuum-IR, XPS, and <sup>29</sup>Si NMR confirmed the successful incorporation of Ce<sup>3+</sup> into the HZSM-5. NH<sub>3</sub>-TPD and Py-IR analyses revealed that Ce-HZSM-5 catalyst significantly increased strong Brønsted acid density compared to HZSM-5. Further, the strong Brønsted/Lewis acid ratio of 3.0Ce-HZSM-5 is 4-fold higher than that of HZSM-5 (9.2 vs 2.3). As a result, the catalyst exhibited excellent activity with 12.7 % conversion of cyclohexene and 99.9 % selectivity to cyclohexanol and maintained high catalytic performance after five cycles. In situ FTIR was used to investigate the cyclohexene hydration reaction mechanism. The results showed that Ce<sup>3+</sup> interacts with Si–OH to form a new strong Bronsted acid site (Si–OH–Ce). This site can effectively promote the activation of cyclohexene and significantly enhance the catalytic hydration performance.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120451"},"PeriodicalIF":4.7,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663186","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}

引用次数: 0

Solvent-induced one-pot catalytic conversion of xylose to high yield γ-valerolactone over Zr-Beta zeolite 溶剂诱导木糖在Zr-Beta沸石上一锅催化转化为高产γ-戊内酯

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-12 DOI: 10.1016/j.apcata.2025.120449

Tinghao Han , Zhongdi Liu , Lincai Peng , Weipeng Song , Huai Liu , Wenlong Jia , Rui Zhang

{"title":"Solvent-induced one-pot catalytic conversion of xylose to high yield γ-valerolactone over Zr-Beta zeolite","authors":"Tinghao Han , Zhongdi Liu , Lincai Peng , Weipeng Song , Huai Liu , Wenlong Jia , Rui Zhang","doi":"10.1016/j.apcata.2025.120449","DOIUrl":"10.1016/j.apcata.2025.120449","url":null,"abstract":"<div><div>The efficient production of γ-valerolactone (GVL) with high yield directly from xylose is of particular interest but remains a great challenge due to the long reaction path. We herein developed a facile catalytic system to directly convert xylose to GVL with a record-high yield of 54.3 %, employing β-zeolite supported Zr-based catalyst in 1,4-dioxane/isopropanol co-solvent. Using Zr(NO<sub>3</sub>)<sub>4</sub>·5 H<sub>2</sub>O as the Zr sources resulting in well-retained β-zeolite structure, larger surface area and pore volume and better dispersion of Zr species, as well as balanced acidic sites where higher amount of Brønsted acid sites promoted the ring-opening of furfural alcohol for this cascade reaction. Notably, the introduction of 1,4-dioxane facilitated the <em>in situ</em> formation of furfural (i.e. yield-determining step) by diluting the competitive adsorption behavior between isopropanol and xylose, allowing more xylose molecules to access the active center, thus promoting the sequential production of GVL with unexpectedly high yield. The present work provides a efficient and straightforward preparation of GVL from xylose, paving the pathway towards higher atom economy.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120449"},"PeriodicalIF":4.7,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632368","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}

引用次数: 0

Two-dimensional MOF derived NiFe-VOx with high catalytic activity and corrosion resistance for seawater splitting 二维MOF衍生NiFe-VOx具有高催化活性和耐腐蚀性能

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-12 DOI: 10.1016/j.apcata.2025.120448

Yingying Yao, Siru Chen, Yufei Feng, Yanjie Wang, Jiabin Xiong, Yaomin Zhao

{"title":"Two-dimensional MOF derived NiFe-VOx with high catalytic activity and corrosion resistance for seawater splitting","authors":"Yingying Yao, Siru Chen, Yufei Feng, Yanjie Wang, Jiabin Xiong, Yaomin Zhao","doi":"10.1016/j.apcata.2025.120448","DOIUrl":"10.1016/j.apcata.2025.120448","url":null,"abstract":"<div><div>Developing highly efficient and corrosion resistance electrocatalysts for seawater splitting can produce H<sub>2</sub> as well as alleviate the shortage of freshwater. In this work, two-dimensional Ni-Fe metal-organic framework on Ni foam (NF) is in situ transferred into NiFe-VO<sub>x</sub>/NF. Electrochemical measurements demonstrate that the optimized NiFe<sub>4</sub>-VO<sub>x</sub>/NF only requires 285 mV of overpotential to achieve a current density of 100 mA cm<sup>−2</sup> in alkaline natural seawater. In addition, the catalyst can run stably for at least 100 h at high current density in alkaline natural seawater. The post analysis indicates that during the electrochemical reaction process, NiFe<sub>4</sub>-VO<sub>x</sub> can transfer into high active Fe(Ni)OOH, therefore improving the catalytic activity of oxygen evolution reaction (OER). What is exciting is that the metavanadate ions formed on the catalyst surface can act as a corrosion resistant layer, effectively avoiding the corrosion of chloride ions. This work not only provide a new catalyst for seawater splitting, but also reveals the mechanisms for the improved catalytic activity and resistance to corrosion, which can inspire the development of electrocatalysts for seawater splitting.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120448"},"PeriodicalIF":4.7,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623340","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}

引用次数: 0

Catalytic oxidation of toluene promoted by Mn-Ce solid solutions with multiple active sites and high oxygen mobility 具有多活性位点和高氧迁移率的锰铈固溶体对甲苯的催化氧化作用

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-11 DOI: 10.1016/j.apcata.2025.120446

Zedong Chen , Jiabin Zhou , Xianjie Liu , Dan Liu , Quanjun Xiang

{"title":"Catalytic oxidation of toluene promoted by Mn-Ce solid solutions with multiple active sites and high oxygen mobility","authors":"Zedong Chen , Jiabin Zhou , Xianjie Liu , Dan Liu , Quanjun Xiang","doi":"10.1016/j.apcata.2025.120446","DOIUrl":"10.1016/j.apcata.2025.120446","url":null,"abstract":"<div><div>In this study, the active site density and lattice oxygen mobility on the surface of (MnCe)O<sub>x</sub> solid solution catalysts were synchronously optimized by controlling the ratio and sequence of the addition of tetrapropylammonium hydroxide and dextran. This led to the exceptional performance of co-modified Mn-Ce solid solution catalysts in efficiently degrading toluene. The best catalytic performance of toluene oxidation was achieved after applying 0.1 mol/L tetrapropylammonium hydroxide followed by 2 % dextran modified (MnCe)O<sub>x</sub> (0.1T-2 % D-MC). The toluene conversion rate reached 90 % at 211 °C. As observed by scanning electron microscopy (SEM) and Raman spectroscopy (Raman), tetrapropylammonium hydroxide tends to interact with CeO<sub>2</sub>, thus generating oxygen vacancies. Meanwhile, the porous structure on the catalyst surface was induced to form, the specific surface area was increased, the active component grain size was reduced, and the active site density was increased. Oxygen temperature programmed desorption (O<sub>2</sub>-TPD) and X-ray photoelectron spectroscopy (XPS) results showed that dextran interacted with MnO<sub>x</sub> to produce lattice defects, and complexed with metal ions, thus the rate of cycling of lattice oxygen species was increased. The Mn-CeO<sub>2</sub> (111)-O<sub>v</sub>-OH model exhibits excellent adsorption capacity for toluene and oxygen molecules (-0.9025 eV, −5.9739 eV). A new approach to utilize organic substances and auxiliary agents with targeting properties as modifiers is proposed in this paper. The limitations of MnCe binary catalysts in practical applications were successfully broken through. A new idea and method for solving related scientific problems are provided by the research results.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120446"},"PeriodicalIF":4.7,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623339","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}

引用次数: 0

Rational design of MoS2-supported single-atom catalysts for enhancing phenol deoxygenation: Unveiling synergistic electronic-geometric effects and a universal structure-activity descriptor 合理设计二硫化钼负载单原子催化剂促进苯酚脱氧：揭示协同电子几何效应和通用结构活性描述符

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-11 DOI: 10.1016/j.apcata.2025.120447

Jiehang Wei, Xin Wang, Tao Ma, Shouqin Mu, Yingtao Liu

引用次数: 0

Palladium-loaded lanthanum metal organic framework for vanillin hydrodeoxygenation 香草醛氢脱氧负载钯金属镧有机骨架

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-07-10 DOI: 10.1016/j.apcata.2025.120442

Kavya Pradeepan , Shun Nishimura

{"title":"Palladium-loaded lanthanum metal organic framework for vanillin hydrodeoxygenation","authors":"Kavya Pradeepan , Shun Nishimura","doi":"10.1016/j.apcata.2025.120442","DOIUrl":"10.1016/j.apcata.2025.120442","url":null,"abstract":"<div><div>Metal organic frameworks (MOFs) as effective supports have attracted interest in heterogeneous catalysis, especially for stabilizing metal species on the porous structure. Herein, we synthesize palladium-loaded lanthanum-based MOF (Pd/La-MOF) as an efficient catalyst for vanillin hydrodeoxygenation (HDO). The successful incorporation of Pd nanoparticles onto the La-MOF support was confirmed by a transmission electron microscopy (TEM), while the structural integrity of the La-MOF post-metal loading was verified through X-ray diffraction (XRD) analysis. Thermogravimetric analysis (TGA) demonstrated the thermal stability of the catalyst under reaction conditions. Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS) and N<sub>2</sub> adsorption–desorption isotherms were employed to evaluate the functional groups, oxidation state, metal support interaction and specific surface area of the material. Catalytic performance of as-prepared Pd/La-MOF catalysts was evaluated for vanillin HDO. Among the different Pd loadings (0.5, 1.0, and 2.0 wt%), the 1.0 wt% Pd/La-MOF exhibited the highest creosol yield of 93 % within 6 h at 160°C under 1.0 MPa H₂ pressure. The reaction mechanism was proposed based on time-profile analysis. Comparative analysis with other Pd-loaded supports demonstrated the superior catalytic efficiency of La-MOF. Additionally, poisoning and leaching studies confirmed the role of acidic sites in creosol formation and the absence of Pd leaching during the reaction. Recyclability tests, along with post-reaction XRD and TEM analyses, confirmed the structural stability of the catalyst and uniform dispersion of Pd nanoparticles after multiple cycles. These results highlight the potential of La-MOF as a thermally stable and effective support for metal-based catalysts, particularly in the Pd-catalyzed HDO reactions.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120442"},"PeriodicalIF":4.7,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596172","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}

引用次数: 0