Article
Chemistry, Inorganic & Nuclear
Le Zhang, Feng Huo, Anqi Wang, Shaohua Chai, Jian Guan, Guijun Fan, Wuxinchen Yang, Guojun Ma, Ning Han, Yunfa Chen
Summary: Currently, the active sites of cobalt (Co) cations in different coordination structures remain elusive and challenging, despite the potential of Co-based oxides in catalytic ozone elimination. In this study, controllable synthesis of different Co-based oxides were achieved and their valences and coordinations were verified. The ozone decomposition performances revealed that Co-Oh(3+) and Co-Oh(2+) in octahedral coordination were superior to Co-Td(2+) in tetrahedral coordination. Notably, MgCo with octahedral coordination exhibited the highest decomposition efficiency and remained stable after long-term running. The high activity of MgCo can be attributed to the d-orbital splitting, facilitating electron transfer in ozone decomposition reactions.
INORGANIC CHEMISTRY
(2023)
Article
Electrochemistry
K. M. H. Bhadhon, J. R. McDermid
Summary: The effect of simulated continuous galvanizing process on the medium-Mn third generation advanced high strength steel was investigated. The study found that an intermediate flash pickling step can significantly reduce the thickness of external oxides on the steel surface, resulting in a surface with pure Fe and isolated external oxides.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Engineering, Environmental
Siyu Ding, Chen Zhu, Hajime Hojo, Hisahiro Einaga
Summary: The study investigated microwave-assisted heterogeneous catalytic oxidation of benzene using Cu-Mn spinel oxides, which showed superior activity and lower apparent activation energy under microwave heating, reducing the required reaction temperature. Transient tests revealed the high reactivity of Cu-Mn spinel oxides related to lattice oxygen on the catalyst surface, which was enhanced under microwave heating, leading to an accelerated benzene oxidation reaction. The combination of adsorption and catalytic oxidation processes efficiently decomposed benzene at low concentrations using Cu-Mn spinel oxides and zeolites.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Die Hu, Weiquan Li, Ke Yin, Bichun Huang
Summary: Mn/TiO2 and Ru-Mn/TiO2 catalysts were prepared and their catalytic performance in the oxidation of chlorobenzene was evaluated. The results showed that the Ru-Mn/TiO2 catalyst exhibited better activity compared to the Mn/TiO2 catalyst. The interaction between Ru and Mn species at the interfaces of Ru/Mn promoted the formation of oxygen vacancies and surface reactive oxygen species, enhancing the catalytic activity.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Environmental Sciences
Mojtaba Ghiassee, Mehran Rezaei, Fereshteh Meshkani, Sajad Mobini
Summary: Mn/Co mixed powders prepared by coprecipitation method showed excellent catalytic performance in low-temperature CO oxidation, with the best performance observed at a Mn/Co molar ratio of 1:1. Incorporation of 1wt.% Pd further enhanced the catalytic activity, with the catalyst exhibiting 100% CO conversion at 80 degrees C.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Electrochemistry
K. A. Dosaev, S. Ya. Istomin, D. A. Strebkov, G. A. Tsirlina, E. V. Antipov, E. R. Savinova
Summary: Using RDE and CV techniques, electrochemical behavior of different AMn2O4 spinel oxides in an alkaline solution, especially in the ORR, was studied. Surface modifications were observed on the studied spinels (except for MgMn2O4) during potential cycling, contact with alkaline solution, and electrode preparation. Mn3O4 spinel showed the strongest surface modifications due to the presence of easily oxidizable and unstable Mn(II). This work highlights the importance of degradation processes on the electrochemical characteristics of materials in the field of electrocatalysis.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Tahrizi Andana, Kenneth G. Rappe, Nicholas C. Nelson, Feng Gao, Yong Wang
Summary: A composite catalyst made of ceria-manganese oxide and Cu-SSZ-13 shows improved selective catalytic reduction (SCR) of NOx by ammonia at low temperatures, primarily through the interaction of the oxide phase with Bronsted acid bound NH3.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Materials Science, Ceramics
Jihene Arfaoui, Abdelhamid Ghorbel, Carolina Petitto, Gerard Delahay
Summary: A new series of Mn-based catalysts prepared by the sol-gel method show high efficiency in converting NO to N2 at low temperatures. The addition of cerium and/or sulfate can adjust the activity of the catalysts and increase the conversion rate.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yungang Wang, Xu Liang, Yanjun Dai, Li Zou, Dou Sun, Feixiang Li
Summary: In this study, a composite metal oxide catalyst Cu-x-Mn-y/SBA-15 was prepared by loading Cu and Mn on SBA-15 molecular sieve, and its catalytic performance in VOCs treatment was investigated. The results showed that the catalyst exhibited excellent catalytic activity and stability, achieving high toluene conversion rate.
Article
Energy & Fuels
Chengrui Xu, Shiwei Dong, Tianhu Chen, Haibo Liu, Xuehua Zou, Minghao Ji, Zhengyan Han, Daobing Shu, Can Wang, Dong Chen
Summary: A series of CuMn mixed oxides catalysts (CMO-T) were prepared from CuMn layered double hydroxides (CuMn-LDH) and showed high catalytic activity and stability in the oxidation of toluene. The formation of a copper-manganese solid solution with abundant multiple-phase interfaces and the strong interaction between Cu and Mn contributed to the enhanced performance. The facile method of preparing mixed-metal solid solutions from LDH precursors has potential applications in catalytic oxidation.
Article
Engineering, Chemical
Baojiang Zhang, Lilong Zhou, Miao Qi, Zhengjie Li, Jilong Han, Kunjie Li, Yunsong Zhang, Fariba Dehghani, Runjing Liu, Jimmy Yun
Summary: A porous silica supported amorphous MnOx catalyst with excellent stability and high activity for catalytic combustion of volatile organic compounds (VOCs) has been successfully constructed. The Si-O-Mn hybridization was found to enhance the activity by promoting the spillover of active oxygen species.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Chemical
Baojiang Zhang, Lilong Zhou, Miao Qi, Zhengjie Li, Jilong Han, Kunjie Li, Yunsong Zhang, Fariba Dehghani, Runjing Liu, Jimmy Yun
Summary: In this study, porous silica supported amorphous MnOx catalyst with excellent stability and high activity for toluene combustion was constructed. The Si-O-Mn interaction promoted the spillover of active oxygen species and enhanced the catalytic activity. This study provides a convenient and effective method to prepare efficient catalysts with high activity and good thermal stability for VOC catalytic combustion.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Environmental Sciences
Yuheng Huang, Xiaoliu Huangfu, Chengxue Ma, Ziqiang Liu
Summary: Microorganisms can oxidize Mn(II) to biogenic Mn oxides through enzyme-mediated and non-enzyme-mediated processes, which are considered as the source and sink of heavy metals. Understanding the interactions between Mn(II) oxidizing microorganisms and heavy metals is important for studying microbial-mediated self-purification of water bodies.
Article
Chemistry, Physical
Tong Qiao, Zhigang Liu, Changhong Liu, Wei Meng, Hong Sun, Ying Lu
Summary: The study demonstrates that the location of MnOx nanoparticles in MnOx-ZSM-5 catalysts significantly influences the catalytic activity for NH3-SCR, with MnOx clusters dispersed on the outside exhibiting higher activity at low temperatures than those encapsulated in the channels of the support. The redox ability and Mn3+ species play crucial roles in enhancing the oxidation of NO and formation of unstable NOx intermediates, ultimately improving the SCR activity at lower temperatures.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Engineering, Environmental
Emma L. Trainer, Matthew Ginder-Vogel, Christina K. Remucal
Summary: Dissolved organic matter (DOM) varies in composition across different water sources, impacting its reactivity with manganese oxides. Highly aromatic DOM undergoes significant changes, while lignin-like carbon reacts selectively with acid birnessite in all samples to form a variety of aqueous products. This highlights the link between DOM composition and its oxidative transformation in diverse water systems.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Ferenc Martinovic, Fabio Alessandro Deorsola, Marco Armandi, Barbara Bonelli, Regina Palkovits, Samir Bensaid, Raffaele Pirone
Summary: A composite catalyst formed by mixing Cu-SSZ-13 with CeO2-SnO2 through solid-state synthesis showed resistance to hydrocarbon poisoning in NH3-mediated NOx-SCR reaction. The addition of CeO2-SnO2 enhanced the resistance towards propylene poisoning, with the primary active sites playing a complex role in preventing hydrocarbon poisoning. The mechanism proposed for deactivation and poisoning prevention involved HONO/nitrate intermediates formed over CeO2-SnO2 re-activating the zeolitic copper for SCR reaction, highlighting the importance of the interaction between different active sites.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Quang Nguyen Tran, Olinda Gimello, Nathalie Tanchoux, Monica Ceretti, Stefania Albonetti, Werner Paulus, Barbara Bonelli, Francesco Di Renzo
Summary: LaAlO3 perovskites and their substitutions exhibit different catalytic behaviors in the gas-phase conversion of ethanol, mainly influenced by their acidic and basic properties. Copper and cobalt substituted materials are prone to forming surface oxygen vacancies, facilitating the self-condensation of acetaldehyde. Gallium substitution promotes both dehydrogenation of ethylene and dehydration of higher alcohols.
Article
Environmental Sciences
F. Demichelis, T. Tommasi, F. A. Deorsola, D. Marchisio, G. Mancini, D. Fino
Summary: Increasing the substrate inoculum ratio and incubation time decreases environmental impacts and increases economic profitability in anaerobic digestion configurations. The most economically profitable plant size is 30,000 tons/year of OFMSW, while the optimal size for maximal revenues and minimal costs is 50,000 tons/year. The highest environmental sustainability and economic profitability were achieved with incubated inocula WAS and CAS at the highest S:I ratio of 2:1.
Article
Crystallography
Freddy Liendo, Mara Arduino, Fabio A. Deorsola, Samir Bensaid
Summary: This study aims to investigate the impact of different monovalent ions on the nucleation and growth rates of CaCO3 precipitation. Results show that the use of Na2CO3 led to faster nucleation kinetics, while (NH4)2CO3 stabilized vaterite and hindered its transformation. The growth rate was found to be influenced by crystal size and magma density, with the ion effect likely related to the ionic radius of the foreign ion.
JOURNAL OF CRYSTAL GROWTH
(2022)
Article
Materials Science, Multidisciplinary
Anira Latif, A. Manan Memon, Tanveer A. Gadhi, Imtiaz Ali Bhurt, Najeebullah Channa, Rasool Bux Mahar, Imran Ali, Alessandro Chiado, Barbara Bonelli
Summary: 3D structured clay filters were synthesized using 3D printed molds and Bi2O3 photocatalyst was successfully immobilized on the surface. Characterization techniques confirmed the presence of the catalyst on the clay and revealed its potential for the treatment of organic pollutants.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Review
Chemistry, Multidisciplinary
Maela Manzoli, Francesca S. Freyria, Nicola Blangetti, Barbara Bonelli
Summary: This article reviews the advancements in the study of phase-pure brookite and brookite-containing TiO2 mixed phases, emphasizing their potential applications in photocatalysis. It is important to understand the roles of brookite-containing heterojunctions, surface properties, crystalline structure, and their influence on phase transitions for their applications in catalysis and electrochemistry.
Article
Chemistry, Physical
Serena Esposito, Brigida Silvestri, Carmelina Rossano, Valeria Vermile, Claudio Imparato, Maela Manzoli, Barbara Bonelli, Vincenzo Russo, Eric M. Gaigneaux, Antonio Aronne, Martino Di Serio
Summary: The transformation of GVL into LA requires the use of bifunctional catalysts synthesized by solgel route. The interaction between the metals and their relative amount and dispersion play a crucial role in determining the catalytic activity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Ferenc Martinovic, Sabrina Ballauri, Nicola Blangetti, Samir Bensaid, Raffaele Pirone, Barbara Bonelli, Marco Armandi, Fabio Alessandro Deorsola
Summary: Solid state ion exchange was successfully used to introduce Fe cations into the small pore CHA structured SSZ-13 zeolite. Characterization of the produced catalysts revealed highly dispersed and heterogeneous Fe sites, with the type depending on the Al distribution in the zeolite. Dimeric Fe species formed preferentially at the start of the exchange, while isolated cations were formed once Al exchange sites were fully saturated.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Green & Sustainable Science & Technology
Francesca Demichelis, Fabio Alessandro Deorsola, Elisa Robotti, Giancarlo Cravotto, Emilio Marengo, Tonia Tommasi, Giorgio Grillo, Debora Fino
Summary: The study investigated the effects of four different pre-treatment methods on the anaerobic digestion (AD) of real organic fraction municipal solid waste (OFMSW) and compared them. The results showed that the most promising configurations were thermal pre-treatment at 120 degrees C for 45 min (with 10-day inoculum incubation and substrate: inoculum (SI) ratio of 2:1) and hydrodynamic-cavitation treatment at 55 degrees C (with 10-day inoculum incubation and SI of 3:1). Moreover, the AD of ultrasound pre-treated OFMSW had the lowest performance, possibly due to the release of lignocellulosic inhibitors.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Physical
Tanveer A. Gadhi, Imtiaz Ali Bhurt, Tayyab A. Qureshi, Imran Ali, Anira Latif, Rasool Bux Mahar, Najeebullah Channa, Barbara Bonelli
Summary: In this study, 3D-structured clay filters were prepared and coated with iron-doped titanium dioxide (Fe-TiO2) using 3D printing and sol-gel soaking and calcination techniques. The coated filters showed uniform coatings of round-shaped Fe-TiO2 on the tiny pore of the clay filter, and had an optical energy band gap of around 2.8 eV. The Fe-TiO2-coated clay filters exhibited high denitrification efficiency and photocatalytic degradation performance for indigo carmine dye.
Article
Chemistry, Physical
Stefano Gervasi, Nicola Blangetti, Francesca S. S. Freyria, Salvatore Guastella, Barbara Bonelli
Summary: For the first time, Fe-doping was performed on high-surface-area anatase/brookite TiO2 through a simple sol-gel synthesis and mild temperature calcination. The Fe doping affected the crystallite growth and cell volume of the brookite phase. It also increased the specific surface area and decreased the bandgap energy. The photocatalytic degradation of simazine was improved by Fe doping under both UV and simulated solar light.
Article
Chemistry, Physical
Nicola Blangetti, Francesca S. Freyria, Maria Chiara Calviello, Nicoletta Ditaranto, Salvatore Guastella, Barbara Bonelli
Summary: The photocatalytic degradation of paracetamol in aqueous solution was studied using four commercial TiO2 powders under 1 SUN. The anatase and brookite powders showed higher activity than P25, while rutile powder showed low activity. Surface impurities likely derived from K3PO4 significantly affected the activity of the anatase powder, while the presence of Cl at the surface of rutile did not affect its activity much. The high activity of brookite powder was attributed to its physicochemical properties including band structure and particle size.
Article
Chemistry, Physical
Mallikarjun Madagalam, Mattia Bartoli, Michele Rosito, Nicola Blangetti, Marco Etzi Coller Pascuzzi, Elisa Padovano, Barbara Bonelli, Sandro Carrara, Alberto Tagliaferro
Summary: To deepen the understanding of electron transfer at the electrochemical interface, the performance of ZnxNi1-xFe2O4 (x = 0, 0.2, 0.4, 0.6, 0.8, 1) nanomaterials in electrochemical sensing was studied. Nanomaterials were synthesized using a simple autocombustion synthesis procedure. The ZnFe2O4 sensor showed the best performances in terms of rate constant, peak-to-peak separation, sensitivity, and detection limit. Nanomaterials energy bands mapping with the experimental redox potentials was performed to predict electron transfer. The importance of surface states/defects in the electron transfer mechanism was highlighted.
Article
Chemistry, Physical
Ferenc Martinovic, Camilla Galletti, Samir Bensaid, Raffaele Pirone, Fabio Alessandro Deorsola
Summary: The study explored the potential use of La-based perovskites doped with Ag as cGPF soot oxidation catalysts, focusing on the effects of different conditions on the catalyst and soot oxidation. Results showed a significant reduction in soot oxidation temperature and high oxygen storage capacity in certain catalysts under specific conditions.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Maria Portarapillo, Gianluca Landi, Giuseppina Luciani, Claudio Imparato, Giuseppe Vitiello, Fabio A. Deorsola, Antonio Aronne, Almerinda Di Benedetto
Summary: Ce0.75Zr0.25O2 catalysts doped with potassium or transition metals (Cu, Mn, Fe), as well as co-doped materials, were studied for their redox properties in solar thermochemical splitting cycles. The results showed that doping with non-reducible K cations promoted the increase of both surface and bulk oxygen vacancies, and K-doped and Fe-K co-doped materials exhibited the best redox performances with high reduction degree, large H-2 amounts, and fast kinetics.
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)
