Article
Chemistry, Physical
Pengcheng Liu, Bing Li, Daijun Yang, Cunman Zhang, Pingwen Ming
Summary: The ratio of ionomerto-carbon (I/C) has significant effects on the microstructure and macro-properties of proton-exchange membrane fuel cell catalyst inks. Higher I/C ratios exhibit stronger anti-agglomeration properties but weaker settling performance, while an I/C ratio of 0.75 provides a balance between anti-agglomeration, anti-settling, and coatability properties.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Aolei Gao, Wenwen Wang, Peng Wang, Hongchao Wu, Chenliang Gong, Aogui Wu, Gongyi Wei, Lei Wang
Summary: A nitrogen-rich rigid PBI binder (PBPBI-3CN) is prepared, which has a functionalized structure, good thermal stability, and good solubility in an environmentally friendly solvent. It can be used to fabricate high-performance MEA in high-temperature proton exchange membrane fuel cells, providing high peak power density, low resistance, and good stability. The protonation, hydrogen bond networks, and platform for proton transfer in the binder are confirmed.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Mongkol Tipplook, Gasidit Panomsuwan, Yukihiro Muta, Nagahiro Saito
Summary: A study demonstrated a one-step synthesis of amphiphilic functional group-modified carbon-supported platinum catalyst via liquid-phase plasma process, improving the efficiency and durability of PEMFCs. The research findings suggest that the number of hydrophilic and hydrophobic characters on the carbon surface plays a crucial role in the performance of PEMFCs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Shuiyun Shen, Junren Chen, Xiaohui Yan, Xiaojing Cheng, Lutian Zhao, Ziwen Ren, Lin Li, Junliang Zhang
Summary: The study reveals that the performance of non-precious metal catalysts needs to find a balance between oxygen reduction activity, proton conduction resistance, and oxygen transport resistance, requiring careful and deliberate designs for MEAs based on NPMCs.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Fengman Sun, Haijun Liu, Ming Chen, Haijiang Wang
Summary: By chemically modifying Pt/C catalyst, we designed a high-oxygen mass-transfer Pt/ionomer interface. The modified membrane electrode assembly (MEA) showed higher voltage at high humidity and reduced oxygen transport resistance. Decreasing the Rionomer of Pt/ionomer interface is the key to improving oxygen transport.
JOURNAL OF POWER SOURCES
(2023)
Article
Environmental Sciences
Asif Jamil, Sikander Rafiq, Tanveer Iqbal, Hafiza Aroosa Aslam Khan, Haris Mahmood Khan, Babar Azeem, M. Z. Mustafa, Abdulkader S. Hanbazazah
Summary: Fuel cells are environmentally friendly technology with high efficiency and economic advantages. Proton exchange membranes, especially for hydrogen fuel cells, have great potential but face challenges in terms of cost and degradation of proton exchange capacity over time.
Review
Chemistry, Physical
Jian Wang, Wei Ding, Zidong Wei
Summary: Proton exchange membrane fuel cells (PEMFCs) are considered as an environmentally friendly alternative to internal combustion engines for the future due to their ability to generate electricity from hydrogen while emitting only water. However, the high cost and scarcity of platinum (Pt) sources have hindered the widespread adoption of fuel cells. To achieve the desired Pt utilization level and improve performance, further research is needed to address challenges such as limited catalytic activity in real fuel cell operations.
ACTA PHYSICO-CHIMICA SINICA
(2021)
Review
Green & Sustainable Science & Technology
Stefanos Tzelepis, Kosmas A. Kavadias, George E. Marnellos, George Xydis
Summary: This paper provides a comprehensive review on macroscopic modelling studies of anode and cathode layers in proton exchange membrane fuel cells (PEMFCs), emphasizing the examination of both catalyst layers and providing valuable information on modelling techniques, assumptions, and validation procedures. It highlights the importance of simulating PEMFCs operation to understand the impact of electro-catalysts' physicochemical properties and stresses the need to investigate alternative electrode materials to enhance cell performance and reduce the use of costly materials like platinum.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Chemistry, Physical
Seon-Ho Lee, Seong Hyeon Woo, Beom Jun Pak, Sungmin Kim, Yun Sik Kang, Seunghee Woo, Seok-Hee Park, Tae-Hyun Yang, Sung-Dae Yim
Summary: This study examines the structural properties of spray-dried catalyst layers formed using different model inks and analyzes their impacts. Various analytical techniques reveal the influence of ink properties on the structure of the catalyst layers.
JOURNAL OF POWER SOURCES
(2023)
Article
Nanoscience & Nanotechnology
Yuqing Guo, Daozeng Yang, Bing Li, Daijun Yang, Pingwen Ming, Cunman Zhang
Summary: This study investigated the effects of the dielectric constant of a dispersion solvent and ionomer content on the rheology of graphitized carbon-supported Pt catalyst ink and the structure of catalyst layers. Increasing the solvent epsilon or ionomer content affected the zeta potential of catalyst particles in the ink and altered the internal interaction, leading to changes in ink rheology. Higher solvent epsilon enhanced ionomer adsorption onto catalysts, improving adhesion between ink particles and reducing CL cracking. Increasing ionomer content also increased fracture toughness of CLs, decreasing crack width.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Shuting Yang, Xili Liu, Fuquan Niu, Luyan Wang, Keke Su, Wenfeng Liu, Hongyu Dong, Hongyun Yue, Yanhong Yin
Summary: In this study, a single-atom Fe-N-C catalyst derived from a two-dimensional layered complex was designed and synthesized to solve the problems of agglomeration and poor stability in Fe single-atom catalysts for oxygen reduction reaction (ORR). The catalyst with unique two-dimensional hierarchical porous nanosheets showed superior ORR performance and excellent electrochemical stability, benefiting from its special edge effect, large specific surface area, and well-distributed Fe single atoms.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Thermodynamics
Ruijiao Yu, Hang Guo, Hao Chen, Fang Ye
Summary: In this study, a three-dimensional fuel cell model with agglomerate was used to investigate the effects of constant value and non-uniform distribution of ionomer on cell performance. The results show that higher ionomer content improves cell performance in the ohmic loss region but reduces it in the concentration loss region. Increasing ionomer content enhances the homogeneity of reaction rate distribution along the thickness direction. The distribution of ionomer content has a significant impact on the reaction rate around the inlet region with sufficient reactants. The results suggest that reducing ionomer content along the main flow direction and implementing a stepped distribution along the thickness direction can improve cell performance.
Article
Thermodynamics
Zhaoqi Ji, Maria Perez-Page, Jianuo Chen, Romeo Gonzalez Rodriguez, Rongsheng Cai, Sarah J. Haigh, Stuart M. Holmes
Summary: Combining reduced electrochemically exfoliated graphene oxide (rEGO) with carbon black (CB) as a hybrid support material enhances the performance of platinum (Pt) catalyst, leading to improved durability and activity compared to conventional Pt/CB catalyst. The hybrid material promotes a more efficient oxygen reduction reaction (ORR) activity and maintains stability over a longer period of time, showing potential for practical applications in hydrogen fuel cells.
Article
Biochemistry & Molecular Biology
Jie Song, Qing Ye, Kun Wang, Zhiyuan Guo, Meiling Dou
Summary: The study showed that PEMFCs operating at higher voltages experience electrode de-activation due to the corrosion of the carbon support, leading to detachment of Pt nanoparticles and subsequent Pt agglomeration, which reduces the catalytic surface area of the cathode Pt for oxygen reduction and decreases the cell performance. In order to improve the efficiency of PEMFCs operated under higher cell voltages, electrochemically stable Pt catalysts are highly desirable.
Article
Chemistry, Physical
Irina Falina, Angelina Pavlets, Anastasia Alekseenko, Ekaterina Titskaya, Natalia Kononenko
Summary: The increase in copper content in PtCux/C catalysts leads to a decrease in current density of MEA, while resistance remains almost unaffected. After MEA testing, the membrane saturation degree by Cu2+ ions does not exceed 40%, mainly due to transport limitations caused by weakly bound copper ions in the Nafion-contaminated three catalytic layers.
Article
Chemistry, Multidisciplinary
Zhixiao Xu, Song Jin, Nianji Zhang, Wenjing Deng, Min Ho Seo, Xiaolei Wang
Summary: By synthesizing an oxygen- and nitrogen-codoped carbon superstructure, the efficient host for high-DOD Zn metal anodes was created. The flower-shaped carbon (C-flower) host with microscale 3D hierarchical structures and zincophilic heteroatom dopants can guide Zn nucleation and growth, enabling horizontal plating with high Coulombic efficiency and long life.
Article
Chemistry, Multidisciplinary
Junil Choi, Minho Kim, Song Kyu Kang, Jihoon Kim, Jungseub Ha, Hyun Ho Shin, Taiho Park, Won Bae Kim
Summary: In this study, a bifunctional electrode material for electrochemical oxidations and CO2 electrolysis was successfully prepared. By in situ phase transition and exsolution of Ni-Fe alloy nanoparticles in a reducing atmosphere, NiFe-R.P.PSFNNb exhibited superior electrochemical performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Xuzi Zhang, Song Jin, Min Ho Seo, Chaoqun Shang, Guofu Zhou, Xin Wang, Ge Li
Summary: This study successfully suppressed the growth of lithium dendrites in the anode by constructing a unique porous structure. The chemical bonding between Cu3P/CoP heterostructures and lithium atoms was found to regulate the plating behavior of lithium. The graphene composite anode designed in this study exhibited high cycling efficiency, low voltage hysteresis, and long lifespan.
Article
Chemistry, Multidisciplinary
Lee Seul Oh, Minseon Park, Yoo Sei Park, Youngmin Kim, Wongeun Yoon, Jeemin Hwang, Eunho Lim, Jong Hyeok Park, Sung Mook Choi, Min Ho Seo, Won Bae Kim, Hyung Ju Kim
Summary: Both experimental and computational methods are used in this work to investigate the effect of electrochemically-synthesized CuCo-oxide, Cu-oxide, and Co-oxide catalysts on the glycerol oxidation reaction. The Cu-based oxides show enhanced ability in cleaving C-C bonds, leading to high selectivity for glycolic acid and formic acid production, compared to the conventional Au and Pt catalysts.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Sukhwa Hong, Kahyun Ham, Jeemin Hwang, Sinwoo Kang, Min Ho Seo, Young-Woo Choi, Byungchan Han, Jaeyoung Lee, Kangwoo Cho
Summary: In this study, a highly efficient and stable oxygen evolution reaction (OER) electrocatalyst is developed by using scalable solution casting method to deposit doped nanoparticles on Ni foam. Advanced X-ray absorption spectroscopy and density functional theory calculations reveal the changes in catalytic active sites, providing new insights for precious-metal doped Ni-Fe oxide electrocatalysts.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Environmental
Jung-Eun Cha, Seol Jang, Dong-Jun Seo, Jeemin Hwang, Min Ho Seo, Young-Woo Choi, Won Bae Kim
Summary: This article introduces a reinforced composite membrane with a two-layered asymmetric structure, which is fabricated by impregnating the Nafion on a porous polyethylene substrate. It both reduces the cost of the membrane used in proton exchange membrane fuel cells and enhances the performance of the cell.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Hyun Ho Shin, Junil Choi, Taiho Park, Won Bae Kim
Summary: Anode-supported proton-conducting solid oxide fuel cells (PC-SOFCs) fabricated with two different proton-conducting oxides, BaCe0.7Zr0.1Y0.1Yb0.1O3-delta (BCZYYb) and BaZr0.8Y0.2O3-delta (BZY), were compared to investigate their electrochemical performances when fueled with syngas. The BCZYYb cells exhibited higher maximum power density (MPD) than the BZY cells when operating on H-2, but degraded more rapidly when operating on syngas. Decreasing the anode thickness improved the stability of BCZYYb cells on syngas. Heterogeneous catalysis experiments showed no significant difference in catalytic activity between the anode powders prepared with the two proton-conducting oxides.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Song Kyu Kang, Minho Kim, Hyun Ho Shin, Wongeun Yoon, Seungjun Lee, Daehee Jang, Junil Choi, Gwan Hyeon Park, Jungsoo Park, Won Bae Kim
Summary: Mn3-xFexO4 nanosheets with interconnected conductive networks were synthesized, showing high reversible capacity and rate capability, which can overcome the theoretical limitations of conventional metal oxide materials and boost Li-ion storage capacity by surface alteration.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Jeongmyeong Kim, Minji Yun, Byeongju Song, Won Bae Kim, Yongju Yun
Summary: The development of chiral catalysts is crucial for producing enantiopure compounds, which are highly sought after by the pharmaceutical and fine chemical industries. Heterogeneous catalysts, such as supported and chirally modified Pt catalysts, offer advantages like high stability, easy separation, and reusability. In this study, a highly efficient and versatile Pt/B-SiO2 catalyst was developed through the facile impregnation method, demonstrating excellent enantioselective hydrogenation performance for alpha-keto esters.
Review
Energy & Fuels
Minho Kim, Hwichan Ahn, Junil Choi, Won Bae Kim
Summary: Silicon is a promising alternative to graphite anode in lithium-ion batteries, but it faces challenges such as particle pulverization and unstable solid electrolyte interphase. All-solid-state batteries provide a different interface for silicon anodes, offering potential for improved electrochemical stability and lifespan. Incorporating silicon anodes into all-solid-state batteries is a strong strategy to overcome the limitations of conventional anode materials, but contact losses between silicon and solid-state electrolyte need to be addressed for optimal performance and stability.
Review
Chemistry, Physical
Venkata Thulasivarma Chebrolu, Daehee Jang, Gokana Mohana Rani, Chaeeun Lim, Kijung Yong, Won Bae Kim
Summary: The concept of green ammonia with zero carbon emissions has gained attention as countries seek to reduce their reliance on fossil fuels. The electrochemical nitrogen reduction reaction (ENRR) has emerged as a promising approach to produce ammonia, but there are challenges in terms of efficiency and production rates. This review provides an overview of the importance of ammonia as an energy carrier, the theory and mechanism of ENRR, different electrolytic systems for ammonia synthesis, and the latest advances in electrocatalysts for ENRR.
Article
Energy & Fuels
Jaejin Bae, Junhyuk Ji, Minho Kim, Song Kyu Kang, Gwan Hyeon Park, Yun Ho Jeong, Changshin Jo, Won Bae Kim
Summary: Nowadays, thickness optimization of an electrode is an effective approach for enhancing the energy density and areal capacity of Li-ion batteries. This paper presents a simple electrospinning technique to fabricate lithium titanium oxide (LTO) nanowire sheet bundles with controllable electrode thickness. The unique microscale layer-by-layer configuration of the LTO nanowires in the sheet bundles enables high areal capacity and efficient penetration of electrolytes. The fabricated LNSB electrode exhibits an ultrahigh areal capacity, outperforming commercial graphite anodes, and holds promise for advanced energy storage applications.
Article
Engineering, Electrical & Electronic
Jae Won Youn, Gwan Hyeon Park, Minho Kim, Song Kyu Kang, Daehee Jang, Won Bae Kim
Summary: F-doped carbon layer coating is an effective surface modification method to enhance the intrinsic conductivity of active materials and facilitate the accommodation of solvated Li+ ions near the carbon surface. By using a cost-effective coating material PVDF, high electrochemical performance can be achieved in lithium-ion capacitors (LICs). A uniform and thin coating of an F-doped amorphous carbon layer on natural graphite (NG) surface results in a high energy density and improved capacity retention compared to pristine NG.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Haeryang Lim, Jae-Yeop Jeong, Dae Hwan Lee, Shin-Woo Myeong, Giwon Shin, Dayeong Choi, Won Bae Kim, Sung Mook Choi, Taiho Park
Summary: In this study, a novel aryl ether-free poly(fluorene) anion exchange membranes (AEMs) were developed and their morphology and conformation were analyzed. It was found that PFPB-QA, with the lowest glass transition temperature, exhibited the most oriented structure and well-connected ion transport channels, achieving high conductivity and alkaline stability.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Multidisciplinary
Daehee Jang, Hyunsu Han, Junbeom Maeng, Wongeun Yoon, Minseon Park, Won Bae Kim
Summary: This study prepares and investigates highly active and stable PdSb nanoparticle catalysts for electrooxidation reactions of various alcohols under alkaline conditions. The optimized PdxSby/PC catalysts show high catalytic activity and long-term stability, which can significantly improve the catalytic performance of alcohol fuel cells.
MATERIALS ADVANCES
(2022)
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)
