Article
Engineering, Environmental
Lian Kong, Dong Li, Jingying Bi, Xiaoqiang Fan, Zean Xie, Xia Xiao, Zhen Zhao
Summary: Template-induced mesoporous Ni-Al mixed oxide catalysts synthesized by the template-assisted self-assembly method exhibit enhanced catalytic performance for the oxidative dehydrogenation of ethane to ethylene.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Jian Pan, Raul F. F. Lobo
Summary: Mn-ZSM5 catalysts exhibit high reaction rates, C2H4 selectivity, and stability for the ethane dehydrogenation reaction. The specific reaction rate increases with the Mn loading until reaching the optimal Mn amount of 3.4 wt% for zeolites with a Si/Al ratio of 12. Characterizations and analysis reveal the presence of MnO2 nanoparticles and (MnOH)+ groups on the external surface of the zeolite, with the former acting as catalytic sites and the latter aiding in stabilization of oxide particles. Mn-ZSM5 samples can catalyze EDH for over 150 h at 600 degrees C with a high reaction rate (>10 mmolC2H6 gcat-1 h-1) and high C2H4 selectivity (>98%). Furthermore, the spent catalyst can be regenerated by calcination in dry or wet air (3% steam).
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Abdulrhman S. Al-Awadi, Ahmed Mohamed El-Toni, Joselito P. Labis, Aslam Khan, Hamid Ghaithan, Attiyah A. Al-Zahrani, Ahmed E. Abasaeed, Saeed M. Al-Zahrani
Summary: Chromium oxide supported on mesoporous organo-silica (MOS) catalysts were synthesized with different Cr loadings by an incipient method. Among the prepared samples, the Cr(8)/MOS catalyst exhibited superior catalytic performance with 50.4% ethane conversion. Additionally, the effects of various catalytic factors on ethane conversion and ethylene selectivity in CO2-based ethane dehydrogenation were investigated.
Article
Chemistry, Physical
Xuedi Qin, Huanyang Wu, Ruihang Wang, Liang Wang, Lu Liu, Hangjie Li, Bo Yang, Hang Zhou, Zuwei Liao, Feng-Shou Xiao
Summary: This study developed a reaction process that utilizes CoS-1 catalyst and MnOx @ Na2WO4 for the dehydrogenation of ethane and selective hydrogen combustion, thereby improving the conversion of ethane and the selectivity of ethylene. The process resulted in a per-pass ethane conversion rate of 43.2% and ethylene selectivity of 93.1% at 590 degrees Celsius and 0.8 bar of ethane feed.
Article
Nanoscience & Nanotechnology
Xingjie Wang, Zoha H. Syed, Zhihengyu Chen, J. David Bazak, Xinyi Gong, Megan C. Wasson, Nancy M. Washton, Karena W. Chapman, Justin M. Notestein, Omar K. Farha
Summary: In order to increase catalytic efficiency, researchers have successfully introduced a redox-active heterometallic Ce12V6-oxo cluster into mesoporous silica material SBA-15, demonstrating improved structural integrity and higher reactivity, which provides new insights for catalyst design and applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Thermodynamics
Diego Maporti, Federico Galli, Paolo Mocellin, Gianluca Pauletto
Summary: This work reports the design of a flexible combined process in which electrified cracking and oxidative dehydrogenation processes are coupled. It identifies an economic viable alternative to the conventional fuel-fired cracking for the production of ethylene, reducing energy consumptions and carbon dioxide emissions.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Chemistry, Physical
Samira Zafarnak, Ali Bakhtyari, Hamed Taghvaei, Mohammad Reza Rahimpour, Adolfo Iulianelli
Summary: This study evaluates the carbon-dioxide-assisted dehydrogenation over alumina-supported catalysts, with particular focus on the performance of cobalt and molybdenum oxide catalysts in ethylene production. Time on steam effect on catalyst performance was also investigated.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Allison M. Arinaga, Anik Biswas, Xinrui Zhang, Jeffrey Greeley, Tobin J. Marks
Summary: Sulfur vapor is an effective oxidant for propane dehydrogenation, showing promising performance and propylene selectivity with vanadium-based catalysts. The support of the vanadium catalyst has significant effects on its reducibility and activity. Compared to traditional oxide catalysts, sulfided surfaces have less secondary oxidation of propylene. Therefore, sulfur vapor is a potential alternative for propane oxidation.
Review
Chemistry, Multidisciplinary
Yihu Dai, Xing Gao, Qiaojuan Wang, Xiaoyue Wan, Chunmei Zhou, Yanhui Yang
Summary: This review outlines the progress of heterogeneous metals and metal oxides catalysts for the selective dehydrogenation of light alkanes developed in the past five years. The synthesis, structural information, catalytic properties and mechanisms of these catalysts for ethane-to-ethylene and propane-to-propylene dehydrogenation are comparatively summarized. Research indicates that these catalysts have potential application prospects in non-oxidative direct dehydrogenation reactions.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Chemistry, Physical
Jie Zhang, Lingting Ye, Kui Xie
Summary: This study demonstrates the potential application of electrochemical ethane oxidative dehydrogenation by preparing metal oxide materials and forming metal-oxide interfaces. The current density reaches 0.51 A cm-2 at 700°C, 1.0V and the ethane conversion rate is 38.9% with the ethylene yield of 24.9%.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Environmental
Runxia Cai, Leo Brody, Yuan Tian, Luke Neal, Arnab Bose, Fanxing Li
Summary: Chemical looping oxidative dehydrogenation (CL-ODH) has the potential to replace steam cracking for ethylene production. Accurate reactor modeling is crucial for scaling up and optimizing this new technology. A one-dimensional packed bed model was used to simulate the CL-ODH of ethane to ethylene, and the results were validated by experiments. Overall, this study provides insights for efficient and optimized operation of CL-ODH reactors.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yanliang Zhou, Yicong Chai, Xiaoyu Li, Zihao Wu, Jian Lin, Yujia Han, Lin Li, Haifeng Qi, Yiming Gu, Leilei Kang, Xiaodong Wang
Summary: The layered TiO2 catalyst M-TiO2, derived from Ti3C2Tx MXene material, shows significant enhancement in ethane ODH performance compared to P25 TiO2. The presence of Ti and oxygen vacancy defects on M-TiO2 plays a key role in the conversion of C2H6. Ti vacancy sites stabilize the structure and increase the reducibility of lattice oxygen, while oxygen vacancy sites facilitate the activation of O2 to recover lattice oxygen.
Article
Chemistry, Physical
Fang Jin, Xiaojie Cheng, Tianyu Wan, Jianhong Gong, Tingyu Liang, Guiying Wu
Summary: Oxidative dehydrogenation and chemical looping oxidative dehydrogenation methods were studied to break through the thermodynamic reaction limitation of ethane dehydrogenation to ethylene, utilizing LaMnO3 perovskite catalysts. The catalyst, prepared using citric acid-nitrate combustion, exhibited good activity and stability in the reactions.
CATALYSIS COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Yukiko Hosono, Hikaru Saito, Takuma Higo, Kosuke Watanabe, Kazuharu Ito, Hideaki Tsuneki, Shun Maeda, Kunihide Hashimoto, Yasushi Sekine
Summary: The study demonstrates that Ce0.8Co0.2O2 catalyst doped with transition metal shows high activity and selectivity for ethylene production in the presence of steam, operating through the Mars-van Krevelen mechanism. The Co-CeO2 interactions play a crucial role in controlling the characteristics of the reactive lattice oxygen suitable for EDH.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Dmitry Melnikov, Ekaterina Smirnova, Marina Reshetina, Andrei Novikov, Hongqiang Wang, Evgenii Ivanov, Vladimir Vinokurov, Aleksandr Glotov
Summary: The catalytic performance of chromia catalysts supported on different carriers was investigated, and it was found that the Cr/MCM-41/HNT catalyst showed the best catalytic performance in the CO2-assisted propane dehydrogenation. It exhibited the highest conversion, selectivity, and space-time yield.
Article
Materials Science, Multidisciplinary
P. Kutalek, P. Knotek, P. Janicek, R. Todorov, E. Cernoskova, J. Smolik, A. Atanasova, L. Tichy
Summary: The study focuses on the laser-induced solid-state reaction in double-layer As2S3 and Ge30Se70 thin films evaporated on substrates. The presence of a newly created intermix layer was confirmed using FTIR, AFM, and ellipsometry, showing a significantly higher shift of the short-wavelength absorption edge compared to the sum of shifts of individual virgin films.
Editorial Material
Chemistry, Physical
Roman Bulanek
Article
Chemistry, Physical
Pavel Cicmanec, Jiri Kotera, Jan Vaculik, Roman Bulanek
Summary: This study provides important information on the relationship between the amount of ethanol in zeolite lattice and the activation energy values of H/D exchange, which is a measure of the acid-base properties of zeolites, and their catalytic activity.
Article
Chemistry, Physical
Gediminas Monastyreckis, Juan Tortosa Siles, Petr Knotek, Maria Omastova, Andrey Aniskevich, Daiva Zeleniakiene
Summary: This study compares the de-icing performance of traditional carbon fiber-based coatings with novel MXene and PEDOT-CNT nanocoatings. The nanocoatings show significantly higher average temperature increase and faster de-icing speed under the same power density, making them a promising solution for efficient de-icing of large composite structures.
Article
Chemistry, Physical
J. Smolik, P. Knotek, J. Schwarz, E. Cernoskova, P. Janicek, K. Melanova, L. Zarybnicka, M. Pouzar, P. Kutalek, J. Stanek, J. Edlman, L. Tichy
Summary: Direct laser writing was performed into high refractive-index glasses to create microlenses and microcraters. The presence of Bi2O3 significantly affected the threshold power densities of microlens and microcrater formation. The glasses with different Bi2O3 content had similar optical, physical, and thermal properties.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Jana Machotova, Petr Knotek, Eva Cernoskova, Roman Svoboda, Lucie Zarybnicka, Miroslav Kohl, Andrea Kalendova
Summary: This paper reports on the preparation of polyacrylate latexes with improved water resistance, wettability, and surface properties. By incorporating fluorinated monomers, using polymerizable emulsifiers, and employing intra- and interparticle covalent crosslinking, highly water-resistant and hydrophobic coatings with self-healing ability were successfully prepared.
Article
Environmental Sciences
Tomas Matys Grygar, Michal Hosek, Tomas Navratil, Jan Bednarek, Jindrich Honig, Jitka Elznicova, Jan Pacina, Jan Rohovec, Jan Sedlacek, Oliver Sass
Summary: Our study focuses on mercury contamination hotspots originating from a chemical factory in Germany. The legacy of the factory has been consistently endangering the river ecosystem in the Czech Republic. We identified the peak contamination of fine sediments entering a downstream reservoir and summarized the historical and current mercury concentrations in the river system.
Article
Geography, Physical
Jitka Elznicova, Timea Kiss, Hans von Suchodoletz, Tamas Bartyik, Gyorgy Sipos, Zuzana Lendakova, Kamila Facevicova, Ivana Pavlu, Jaromir Kovarnik, Tomas Matys Grygar
Summary: This paper investigates the transformation of the channel pattern of the Jizera River in Czechia, from meandering to low-sinuous. By analyzing the topography and historical maps, it is found that the transition is likely to be climatic-driven, possibly influenced by past climatic extremes.
EARTH SURFACE PROCESSES AND LANDFORMS
(2023)
Article
Environmental Sciences
Tomas Matys Grygar, Jitka Elznicova, Stepanka Tumova, Tomas Kylich, Jan Skala, Karel Hron, Miguel Angel Alvarez-Vazquez
Summary: The aim of this work was to construct maps of anthropogenic contamination of agricultural soils in Czech Republic by risk elements. Conventional approaches to geochemical maps can only visualize extreme contamination, while weak and/or diffuse contamination requires expert opinion to distinguish natural and anthropogenic factors. Geogenic and lithological anomalies play important roles in understanding contamination sources. Element concentration ratios, such as Co, Cu, Pb, and Zn, can be used to separate geogenic and lithogenic anomalies. Expert opinion is necessary to distinguish anthropogenic contamination from natural variability. The interpretation of geochemical maps and identification of anthropogenic contamination become more complicated in larger and more heterogeneous mapped areas.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Katerina Kopecka, Lenka Vitkova, Zuzana Kronekova, Lenka Musilova, Petr Smolka, Filip Mikulka, Klara Melanova, Petr Knotek, Martin Humenik, Antonin Minarik, Ales Mracek
Summary: Layered nanoparticles with surface charge can modify the rheological properties of extrudable materials by inducing electrostatic repulsion and creating a house-of-cards structure. These nanoparticles provide mechanical support and increase viscosity and storage modulus. They also exhibit shear-induced orientation and decreased viscosity during flow. In this study, we synthesized and exfoliated phenylphosphonate-phosphate particles that can be intercalated by hydrophilic polymers. These nanoparticles were used as rheological modifiers for sodium alginate and effectively increased viscosity and exhibited shear-thinning behavior. The resulting nanocomposite hydrogels showed potential as a bioink for 3D printing in tissue engineering and biomedical applications with good shape fidelity, nontoxicity, and satisfactory cell viability.
Article
Materials Science, Coatings & Films
Hanna Sopha, Jana Bacova, Kaushik Baishya, Marcela Sepulveda, Jhonatan Rodriguez-Pereira, Jan Capek, Ludek Hromadko, Raul Zazpe, Sitaramanjaneya M. Thalluri, Jan Mistrik, Petr Knotek, Tomas Rousar, Jan M. Macak
Summary: The study compares the cytotoxicity of black TiO2 nanotubes with white TiO2 nanotubes and multi-walled carbon nanotubes (MWCNTs). The TiO2 nanotubes were prepared by anodic oxidation and categorized into white and black forms. A thin TiO2 coating was also added to the black TiO2 nanotubes using Atomic Layer Deposition (ALD). The results showed that the cell viability was not affected by TiO2 nanotubes up to a concentration of 100 μg/mL, while MWCNTs significantly decreased the cell viability at a similar concentration. Adding ALD TiO2 coating on the black TiO2 nanotubes eliminated the mild toxic effects observed in both white and black TiO2 nanotubes.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Physical
P. Kutalek, E. Samsonova, J. Smolik, P. Knotek, J. Schwarz, E. Cernoskova, P. Janicek, L. Tichy
Summary: Laser direct writing at 532 nm was used to create microlenses and microcraters in stoichiometric (GeS2)x(As2S3)(1-x) bulk glasses. The influence of chemical composition and illumination conditions on microlens formation was studied. Characterization of the microlenses and nonilluminated area was carried out to identify potential differences in properties. The microlenses showed potential applicability in miniaturization optics. In-situ microlens formation was also studied using a modified thermo-mechanical analyzer.
APPLIED SURFACE SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Klara Melnova, Katerina Kopecka, Ludvik Benes, Petr Kutalek, Petr Knotek, Zuzana Zmrhalova, Jan Svoboda
Summary: In this study, a promising photoprotective additive that combines the advantages of organic UV absorbers and inorganic particles without compromising the properties of the paint material was proposed. The additive involved the intercalation of a well-known organic UV absorber, PBISA, into ZnAl-LDH. Three ZnAl-LDH intercalates with PBISA were prepared and characterized. An effective UV protection film was prepared using one of the intercalates and incorporated into a polyurethane-acrylate lacquer, offering a viable solution for surface modification of plastic products.
Article
Materials Science, Multidisciplinary
Jan Zich, Martin Misek, Vaclav Holy, Karel Carva, Jakub Cizek, Jiri Navratil, Patrik Cermak, Petr Knotek, Katerina Cermak Sraitrova, Stanislav Cichon, Jiri Hejtmanek, Zdenek Jirak, Cestmir Drasar
Summary: Fe-intercalated Bi2Se3 single crystals exhibit unique physical properties, including superconductivity, pronounced Shubnikov-de Haas oscillations, and high carrier mobility. These properties are correlated with the structural properties and point defects of the crystals. The study suggests that the inhomogeneous distribution of defects in the sample volume may be responsible for the interesting properties of Bi2Se3.
Article
Environmental Studies
Johana Zacharova, Jiri Riezner, Jitka Elznicova, Iva Machova, Karel Kubat, Diana Holcova, Michal Holec, Jan Pacina, Jiri Stojdl, Tomas Matys Grygar
Summary: Studying the distribution and characteristics of pluziny is of great significance for the preservation and planning of agricultural landscapes, and it has been proven that pluziny has a positive impact on geodiversity and biodiversity.
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)
