Catalysis Today最新文献

{"title":"Nickel (II) and Cobalt (II) Based 2D mixed metal-metal organic frameworks (MM-MOFs) for electrocatalytic water splitting reactions","authors":"Janak,&nbsp;Ritika Jaryal,&nbsp;Sakshi,&nbsp;Rakesh Kumar,&nbsp;Sadhika Khullar","doi":"10.1016/j.cattod.2024.115117","DOIUrl":"10.1016/j.cattod.2024.115117","url":null,"abstract":"<div><div>Hydrogen and oxygen production from electrocatalytic water splitting offers a sustainable strategy towards achieving renewable energy. However, sluggish kinetics of the reaction require expensive platinum (Pt) and ruthenium dioxide (RuO₂)/ iridium dioxide (IrO₂)-based electrocatalysts where the high cost of the catalyst hinders the practical use of water splitting reaction. Two-dimensional mixed metal metal-organic frameworks (2D MM-MOFs) have emerged as alternative promising electrocatalysts. In MM-MOFs, the metal centers play a crucial role in determining the catalytic activity. Among several MM-MOFs explored for water splitting reaction, Co(II) and Ni(II)-based MM-MOFs have shown a significant potential, rendering them as promising materials for efficient and sustainable electrochemical energy conversion and storage technologies. Herein, we highlight recent advancements in the development of Ni(II) and Co(II)-based 2D MM-MOFs, emphasizing their outstanding electrocatalytic performance for hydrogen evolution reaction and oxygen evolution reaction. Strategies for the effective design and development of electrocatalysts along with the challenges are also discussed.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"446 ","pages":"Article 115117"},"PeriodicalIF":5.2,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic effect of adsorption and photo-catalysis in removal of various textile dyes: Excellent efficacy of molybdenum disulfide-zinc oxide hybrids","authors":"A. Dhariwal ,&nbsp;D. Banerjee ,&nbsp;N. Sen ,&nbsp;N. Chakraborty ,&nbsp;K.K. Chattopadhyay","doi":"10.1016/j.cattod.2024.115116","DOIUrl":"10.1016/j.cattod.2024.115116","url":null,"abstract":"<div><div>The present work reports the development of molybdenum disulfide (MoS₂) wrapped zinc oxide nano-rods through an in-situ hydrothermal approach at a moderate temperature of 200 °C. The as-developed samples were characterized by different sophisticate techniques like X-ray diffraction (XRD), Field emission scanning electron microscopes (FESEM), Fourier Transformed Infrared (FTIR), UV-Visible (UV-Vis) and photoluminescence (PL) spectroscopy. The composition analysis was done with the help of energy-dispersive x-ray (EDX) and stability of the sample against elevated temperature was estimated with the help of thermo gravimetric as well as differential thermal analysis (TG-DTA). XRD shows that the crystallinity of MoS₂ was not very high whereas pure ZnO shows well-crystalline features. FESEM micrographs confirmed growth of fractal nature of MoS₂ over ZnO rods. FTIR showed the different bond present in the material whereas UV-Vis spectra aided to have ideas about the band gap of all the samples. PL study shows that ZnO gives the most intense luminescence signal carrying the signature of both band to band and defect induced transition. In case of hybrid sample the emission wavelength gets shifted from dark blue to cyan region. It has been shown that the MoS₂ has excellent efficacy in removing different textile dyes like Bengal rose, malachite green, methyl orange or rhodamine B and thus when it is combined with ZnO the removal efficiency of the ZnO increases significantly. It has also been shown that for pure MoS₂ adsorption is the key mechanism of the dye removal whereas for pure ZnO photo-catalysis is the major contribution for the removal. In case of the hybrid sample, thus synergistic effect of the two processes gives the best result and in most of the cases over 90 % removal was achieved within 15 minutes only. Efforts have been given to explain the result in terms of dye structure and its interaction, surface area as optical band gap of the sample.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"446 ","pages":"Article 115116"},"PeriodicalIF":5.2,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization and optimization of biodiesel production from corn oil using heterogeneous MoO3/MCM-41 catalysts","authors":"Jéssica Caroline Freitas Cavalcante,&nbsp;André Miranda da Silva,&nbsp;Paula Mikaelly Batista Caldas,&nbsp;Bianca Viana de Sousa Barbosa,&nbsp;Heleno Bispo da Silva Júnior,&nbsp;José Jailson Nicácio Alves","doi":"10.1016/j.cattod.2024.115119","DOIUrl":"10.1016/j.cattod.2024.115119","url":null,"abstract":"<div><div>Different types of heterogeneous catalysts have been developed worldwide and tested for biodiesel production from corn oil as a feedstock via the transesterification and esterification reactions. In this study, varying contents of MoO₃ were incorporated into the mesoporous molecular sieve MCM-41 using the pore saturation method to form heterogeneous catalysts (MoO₃/MCM-41). Characterization results confirmed the formation of the MCM-41 structure and the mesoporous phase filling by molybdenum, along with different surface areas, volume, and pore diameters. The silanol groups impart acidity to the molecular sieve, and a molybdenum content above the optimum reduced the availability of acidic sites on the catalyst surface, filling the micro and mesoporous channels, resulting in lower acidity. Catalytic performance was evaluated using a 2² factorial design with three center points to optimize reaction parameters including MoO₃content and temperature. The maximum yield was 87.87 %, achieved with a 3 % catalyst load containing 15 wt% MoO₃, at an oil-to-alcohol molar ratio of 1:20 at 150 °C for 3 h. Temperature had the most significant influence on biodiesel yield.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"446 ","pages":"Article 115119"},"PeriodicalIF":5.2,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improvement of data and metadata quality in catalysis research: A use case-driven methodology","authors":"Nadiia Huskova,&nbsp;Yuliia Dikova,&nbsp;Taras Petrenko,&nbsp;Thomas Bönisch","doi":"10.1016/j.cattod.2024.115111","DOIUrl":"10.1016/j.cattod.2024.115111","url":null,"abstract":"<div><div>The goal of the NFDI4Cat project is to establish a National Research Data Infrastructure for catalysis research in Germany that ensures the data and metadata collected and shared by researchers are of high quality and adhere to established standards. To achieve this goal, a comprehensive use case (UC) collection methodology has been developed. The methodology is based on the collection and analysis of use cases for research workflows and data therein provided by the researchers working in the field of catalysis. The proposed methodology includes detailed guidelines for the information collected within a particular UC, ensuring that it is relevant, accurate and complete. The collected UC data are then evaluated based on established criteria for data and metadata quality. Any identified issues are addressed through the collaboration with the respective researchers, to ensure that the use cases meet the required standards. The collected use cases are then standardized, which in particular includes mapping the data and metadata to relevant ontologies and vocabularies, as well as ensuring consistency across different use cases. The standardization process is coupled with a semantic representation of metadata within the Resource Description Framework (RDF) followed by appropriate extension of the ontology being developed. The semantic framework allows for easy integration and cross-referencing of data. It ensures that the data are machine-readable, linked, and can be easily integrated with other datasets, making it more discoverable and useful for the catalysis research community. Within the project, special attention is paid on the collection of UCs from different fields, including biocatalysis, homogeneous catalysis, and heterogeneous catalysis. This will provide a comprehensive representation of the metadata related to catalysis. The proposed methodology serves as a valuable resource for the catalysis research community, promoting adherence to established standards and ensuring that the data and metadata shared by researchers are of high quality.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"446 ","pages":"Article 115111"},"PeriodicalIF":5.2,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The application of graphitic nitrogen from corn stover for the selective catalytic oxidation of 5-hydroxymethyl furfural","authors":"Wei Lv ,&nbsp;Yao Wang ,&nbsp;Hong Chen ,&nbsp;Yongqi Tang ,&nbsp;Yongdan Li","doi":"10.1016/j.cattod.2024.115113","DOIUrl":"10.1016/j.cattod.2024.115113","url":null,"abstract":"<div><div>Nitrogen atom-doped biomass carbon prepared from corn stover is a newly discovered metal-free catalyst that shows good activity on the selective oxidation of 5-hydroxymethylfurfural (5-HMF) to 2,5-diformylfuran (DFF). Here, the presence of graphitic nitrogen on the catalyst surface activated the oxygen adsorbed on the carbon sites next to the graphitic nitrogen in the carbon material and promoted the formation of oxygen radicals on the surface-active sites, improving the HMF oxidation process. The results show that the catalyst NC-800 reacted with acetonitrile as the reaction solvent at 110 °C and 1.0 MPa O₂ for 8 h to obtain 93.0 % HMF conversion and 94.4 % DFF selectivity, and the 5-HMF conversion and DFF selectivity were maintained at more than 85 % after five cyclic tests, with excellent cyclic stability. One of the main factors influencing the material flaws is the variation in pyrolysis temperature. Using maize stover, a readily available and renewable biomass, in the catalytic oxidation of biomass platform compounds may improve biomass utilization more extensively.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"446 ","pages":"Article 115113"},"PeriodicalIF":5.2,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydroxyapatite supported Ni and La2O3 boost methane-enriched gas production from pyrolysis-steam reforming of corn stalk","authors":"Lianghuan Wei ,&nbsp;Ning Lin ,&nbsp;Jixiang Cai ,&nbsp;Fang Huang ,&nbsp;Zejun Liu ,&nbsp;Hengli Qian ,&nbsp;Chao Xie ,&nbsp;Weizun Li ,&nbsp;Meiting Ju ,&nbsp;Qidong Hou","doi":"10.1016/j.cattod.2024.115112","DOIUrl":"10.1016/j.cattod.2024.115112","url":null,"abstract":"<div><div>The production of methane-enriched gas via thermo-chemical process is an important approach for biomass valorization. However, current pyrolysis processes generally give low yield of value-added gas product. Herein, a series of Ni-based materials with hydroxyapatite (HAP) and titanium silicate (TS) as supports were prepared and investigated as catalysts to boost CH₄ production from pyrolysis-steam reforming of corn stalk. The surface element composition, chemical state and crystal structure of materials were characterized by transmission electron microscope (TEM), N₂ adsorption-desorption, X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analysis. The expected loading of Ni, La and Ce were successfully loaded onto HAP via simple impregnation method, while the loading of active metals on TS is finite. Ni-5La₂O₃/HAP exhibited the best catalytic activity for pyrolysis-steam reforming of corn stalk, attaining CH₄ yield (19.41 mmol/g) that is 89.9 % and 46.2 % higher than control experiment and Ni-5CeO₂/MCM-41, indicating that loading high-density Ni and La species onto HAP supports can greatly boost the CH₄ formation. However, the catalysts lost activity obviously during recycling experiment probably due to carbon accumulation.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"446 ","pages":"Article 115112"},"PeriodicalIF":5.2,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Continuous Flow valorization of furanics: From decarbonylation of 5-Hydroxymethyl-furfural to furfuryl alcohol conversion into valuable oxidative coupling products","authors":"Kelvin A. Sanoja-López,&nbsp;Dayanara D. Salinas-Echeverría,&nbsp;Rafael Luque","doi":"10.1016/j.cattod.2024.115109","DOIUrl":"10.1016/j.cattod.2024.115109","url":null,"abstract":"<div><div>This study focuses on the tandem multi-step valorization of 5-hydroxymethylfurfural (HMF) to valuable furanic derivatives using a catalytic process with 10 % Pd/C in continuous flow under mild operating conditions. The results demonstrate the selective conversion of 5-HMF to furfuryl alcohol with yields exceeding 99 % under mild conditions and short times of reaction, subsequently followed by the conversion of furfuryl alcohol to valuable products (imines) via oxidative coupling. This continuous flow approach offers several advantages over batch methods, including the ability to achieve high yields with precise control of parameters such as temperature, pressure, and flow rate, thereby facilitating process optimization and scalability.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"446 ","pages":"Article 115109"},"PeriodicalIF":5.2,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable hydrogenation of xylose to xylitol using nickel-alumina catalysts supported on hexagonal mesoporous silica in water vis-à-vis aqueous isopropanol as solvent","authors":"Sneha R. Shetty ,&nbsp;Ganapati D. Yadav","doi":"10.1016/j.cattod.2024.115105","DOIUrl":"10.1016/j.cattod.2024.115105","url":null,"abstract":"<div><div>Hydrogenation of xylose to xylitol is commercially attractive. The use of water as well as aqueous isopropanol as solvent using a novel robust catalyst was targeted in this work. This work showed that a nickel-alumina catalyst supported on hexagonal mesoporous silica (HMS) can effectively transform lignocellulose-derived xylose fraction to the value-added product, xylitol. HMS support was modified by simultaneous impregnating nickel (6 wt%) and alumina (4 wt%) which was subsequently oxidized. The catalyst was evaluated for its hydrogenation ability of xylose to xylitol. Identical reactions were carried out with HMS, alumina, Al/HMS and Ni/HMS to ascertain the activity of each moiety in the reaction. Before the reaction, the catalyst was reduced in a tubular reactor in the presence of hydrogen. Reaction parameters such as speed of agitation, type of precursor, metal loading, catalyst loading, solvent, concentration and temperature were studied and optimized. At 130℃ and 20 bar H₂, initial xylose concentration of 0.2 mmol/mL with water: isopropanol (1:1 v/v) mixture as solvent, conversion of xylose was found to be 98 % with a selectivity of 97 % towards xylitol. Comparison was also made with water alone as a solvent. A kinetic study of the reaction was performed. The transformation of xylose to xylitol using this novel catalyst is a green process since it entails substantially lower metal loading when compared to the conventional Raney nickel catalysts, it does not involve the use of noble metals such as Pt, Pd, Rh or Ru, and also does not suffer from the problem of metal leaching, making it superior to those catalysts reported yet.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"446 ","pages":"Article 115105"},"PeriodicalIF":5.2,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of manganese oxides supported on zeolite Y on catalytic oxidation of benzene by ozone","authors":"Xuerui Zheng ,&nbsp;Hisahiro Einaga","doi":"10.1016/j.cattod.2024.115104","DOIUrl":"10.1016/j.cattod.2024.115104","url":null,"abstract":"<div><div>Manganese oxide catalysts with different structures and loading levels were supported on zeolite Y catalysts using a dry impregnation method for the oxidation of low concentrations of benzene with ozone. X-ray diffraction (XRD) and X-ray absorption fine structure (XAFS) studies revealed that manganese oxide was highly dispersed on the zeolite in a low oxidation state for those prepared with the acetate precursor, and highly oxidized and aggregated manganese oxide for those prepared with the nitrate precursor. In the reaction at 70 ℃, the benzene oxidation rate, CO₂ selectivity, and ozone/benzene decomposition ratio were independent of the manganese loading, manganese precursor, and zeolite Y porosity. These catalytic properties were found to be less dependent on the manganese oxide structure. A slight increase in the reaction temperature enhanced both the catalytic activity and the catalyst performance, while the presence of water vapor had no significant impact. The XAFS analysis of the spent catalysts indicated that during the benzene decomposition reaction, the structure of the manganese oxide loaded on the catalyst was altered, and its oxidation state was uniformly reduced.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"446 ","pages":"Article 115104"},"PeriodicalIF":5.2,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ni/Al2O3 promoted by CeO2, CeO2-La2O3, and CeO2-ZrO2 supported on cordierite monoliths for methane steam reforming","authors":"Victória Gonçalves F Pereira ,&nbsp;Ana Serrano-Lotina ,&nbsp;Raquel Portela ,&nbsp;Miguel A. Bañares ,&nbsp;Clarissa Perdomo Rodrigues ,&nbsp;Fabio Souza Toniolo","doi":"10.1016/j.cattod.2024.115107","DOIUrl":"10.1016/j.cattod.2024.115107","url":null,"abstract":"<div><div>Promotion of Ni-based catalysts supported on cordierite monoliths was investigated for methane steam reforming. First, cordierite was coated by ɣ-Al₂O_3, and then the catalyst components were deposited by successive wet impregnation, obtaining: NiAl/cordierite; NiCeAl/cordierite; NiCeLaAl/cordierite and NiCeZrAl/cordierite. The monolithic catalysts were characterized by adherence test, Scanning Electron Microscopy with Energy-Dispersive X-ray Spectroscopy (SEM-EDX), N₂ physisorption, Temperature-Programmed Reduction (TPR), CO chemisorption, as well as by <em>in situ</em> and <em>operando</em> Raman spectroscopy. The catalyst layer showed very good adherence and distribution of the components over the cordierite surface. The catalysts presented high activity between 600 and 800 °C at a H₂O/CH₄ molar ratio=1.5, except for NiCeAl/cordierite, which obtained lower methane conversion, associated with its lower nickel dispersion. The catalysts showed high stability under extreme conditions for carbon deposition (600 °C and H₂O/CH₄=1), over 90 h on stream. Raman spectroscopy revealed the presence of oxygen vacancies, which may be increased during ceria reduction, highlighting the potential of these catalysts to enhance the resistance to deactivation by carbon deposition in long-term tests.</div></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":"445 ","pages":"Article 115107"},"PeriodicalIF":5.2,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552721","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}