Article
Chemistry, Physical
Elif Seref, Melek Tercan, Hava Ozay, Pinar Ilgin, Ozgur Ozay
Summary: The biohybrid Na-Alg@Ru catalyst was prepared by stabilizing Ru(0) nanoparticles with biopolymer chains of sodium alginate. The in-situ prepared Ru(0) nanoparticles with an average particle size of 1.023 ± 0.097 nm were successfully used as a catalyst in hydrogen production from ammonia borane (AB) by hydrolysis reaction. The Na-Alg@Ru catalyst containing 3 mg Ru(0) metal showed 100% yield in the hydrolysis of 50 mM AB, with an estimated activation energy (Ea) of 61.05 kJ mol-1. Additionally, the Na-Alg@Ru nanoparticles were used in p(AAm)/NaAlg@Ru hydrogel films for hydrogen production in fuel cells, simulating a battery-like environment.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Licheng Liang, Linyan Bian, Yanping Fan, Shuyan Guan, Xianyun Liu, Qunying Sun, Baozhong Liu
Summary: Efficient catalysts are essential for sustainable utilization of hydrogen energy. Ru/Ti3C2-xNx catalysts were designed using N-doped two-dimensional material MXene as support for hydrogen generation from ammonia borane hydrolysis. The catalysts exhibited ultrafine particle size and high turnover frequency, attributed to the confinement and anchoring effects of Ti3C2-xNx. XPS and isotope experiments confirmed the role of N atoms in promoting the reaction and identified the rate-determining step as H2O dissociation. This research provides a strategy to enhance the catalytic performance of heterogeneous catalysts through N-doping.
Article
Chemistry, Physical
Ying Duan, Pan Guo, Dong Sui, Dongsheng Deng, Tianliang Lu, Yanliang Yang
Summary: This article reports a method for preparing a catalyst for the hydrolysis of ammonia borane and characterizes the catalyst. By dispersing noble metals highly on the surface of Cu nanoparticles, the catalytic activity of the catalyst is significantly improved. Among them, the Rh catalyst exhibits the highest catalytic activity and the lowest activation energy.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Ling Fu, Li Cai
Summary: A Ru-based catalyst was prepared using a natural polyphenolic polymer immobilized on collagen fiber as the stabilizer and carrier of Ru nanoparticles. The catalyst exhibited high catalytic activity in the hydrolysis of ammonia borane to produce hydrogen, with a high TOF and low activation energy. It also showed good reusability and stability, with only minor loss of activity and no agglomeration or leakage of Ru nanoparticles after repeated use.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Biochemistry & Molecular Biology
Oscar Ramirez, Sebastian Bonardd, Cesar Saldias, Macarena Kroff, James N. O'Shea, David Diaz Diaz, Angel Leiva
Summary: The bimetallic NiPt nanoparticles were successfully loaded into alginate hydrogel beads through in situ reduction process, and the prepared hybrid hydrogels showed excellent catalytic activity and stability for the hydrolysis of ammonia borane to produce hydrogen.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Physical
Jiaxin Liu, Peiyun Li, Renfeng Jiang, Xiucheng Zheng, Pu Liu
Summary: The study demonstrates the synthesis of an excellent ammonia borane hydrolysis catalyst by immobilizing ruthenium nanoparticles on chitosan natural polymers, showing high-performance hydrogen generation. Catalyzed by the optimal Ru/CS, the turnover frequency reaches up to 331.8 min(-1) in NaOH solution at 303 K, with an apparent activation energy of 41.3 kJ mol(-1, which outperforms many previously reported results.
Article
Chemistry, Physical
Meng Yuan, An Guo, Yalan Chen, Xiaolan Wang, Guangyin Fan, Xiaojun Yu
Summary: This study develops a unique strategy to enhance Ru-catalysed hydrogen evolution from ammonia borane hydrolysis by doping boron impurities into urchin-like TiO2 nanoribbon assemblies, leading to significantly improved catalytic performance.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Siming Wang, An Guo, Yumei Peng, Yi Wang, Yan Long, Guangyin Fan
Summary: This study developed an alkaline ultrasonic irradiation-mediated catalytic system, which significantly enhanced the catalytic activity for hydrogen production from the hydrolytic dehydrogenation of ammonia borane without the need for additional heating, achieving an ultrahigh turnover frequency. The results demonstrate that alkaline ultrasonic irradiation is beneficial for promoting the hydrogen generation reaction in ammonia borane hydrolysis, providing an environmentally friendly pathway for the sustainable development of hydrogen energy.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Shilong Yang, Yue Zhu, Jiaxin Liu, Xiucheng Zheng, Xiaoli Zhang, Pu Liu
Summary: In this study, a variety of composites were prepared from chitosan (CS) and hexagonal boron nitride (h-BN) with the assistance of ultrasonication. Ru nanoparticles (NPs) were anchored onto the composites through an adsorption-chemical reduction approach. The Ru/CS-h-BN catalyst with 20% CS loading showed the highest catalytic activity for ammonia borane (AB) hydrolysis, providing a new avenue for the development of structure-sensitive nano-metal materials.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Energy & Fuels
Miriam Navlani-Garcia, David Salinas-Torres, Diego Cazorla-Amoros
Summary: This review summarizes recent Ru-based heterogeneous catalysts used in the hydrolytic dehydrogenation of ammonia borane, with a focus on those supported on carbon materials and oxides.
Review
Chemistry, Physical
Saim Ozkar
Summary: This review summarizes recent studies on the preparation and use of magnetically separable transition metal nanoparticles (TMNs) as reusable catalysts for the hydrolytic dehydrogenation of ammonia borane (AB). Research includes intrinsically magnetic TMNs, core-shell multimetallic nanoparticles, and TMNs supported on various materials.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Yue-Wei Wei, Guang Yang, Xi-Xi Xu, Yan-Yan Liu, Nai-Xin Kang, Bao-Jun Li, Yong-Zhao Wang, Yong-Xiang Zhao
Summary: In this paper, a carbon-coated zeolite prepared by high temperature calcination using glucose as carbon source was used as a composite support for ultrafine Ru nanoparticles, which showed outstanding catalytic activity in the hydrolysis of ammonia borane (AB). The catalyst exhibited a turnover frequency of 892 min(-1) at room temperature, outperforming many previously reported catalysts. The excellent catalytic activity was attributed to the carbon layer effectively limiting Ru nanoparticle aggregation and the role of zeolite in pre-activating water. The study of catalyst concentration, AB concentration, and NaOH concentration further investigated the hydrolysis rate of AB.
Article
Energy & Fuels
Yasar Karatas, Tayfun Cetin, Ihsan Nuri Akkus, Yuksel Akinay, Mehmet Gulcan
Summary: The study synthesizes Rh (0) nanoparticles deposited MXene catalysts using a simple method and demonstrates their effectiveness in hydrogen production from the hydrolysis of ammonia-borane. The Rh/MXene catalyst shows good catalytic performance and stability in the hydrogen production reaction.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Derya Ozhava, Yasemin Cigdem, Sureyya Erturk
Summary: This study presents the preparation and use of magnetically isolable nanocatalyst Rh0@Fe3O4, consisting of rhodium nanoparticles (Rh0NPs) on the surface of magnetite nanospheres, for the methanolysis of ammonia borane (MAB). The Rh0NPs are well stabilized and homogeneously distributed on the nanospheres with a mean particle size of 2.8 ± 0.5 nm. The Rh0@Fe3O4 nanocatalyst exhibits high catalytic activity and can be reused multiple times, with a remarkable TOF value of 184 min-1 and maintaining 100% initial activity after four reuses of MAB at room temperature.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Xiaofa Su, Sifang Li
Summary: A new type of PVP-stabilized bimetallic Co-Ni nanoparticles as catalyst for hydrogen production from methanolysis of ammonia borane showed good catalytic performance, magnetic recyclability, and synergistic effect between Co and Ni.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Applied
Miriam Navlani-Garcia, David Salinas-Torres, Francisco Daniel Vazquez-Alvarez, Diego Cazorla-Amoros
Summary: This study developed Pd nanoparticles-based catalysts supported on composites formed by MWCNTs and g-C3N4 for the dehydrogenation of formic acid in the liquid phase. The composition of the support was found to affect the performance of the catalyst, with the catalyst containing 63 wt. % of C3N4 exhibiting the best activity.
Article
Chemistry, Physical
Guoxiang Yang, Yasutaka Kuwahara, Kohsuke Mori, Catherine Louis, Hiromi Yamashita
Summary: In this study, a heterogeneous catalyst for carbon dioxide hydrogenation was developed, which showed both excellent activity and recyclability. The catalyst consisted of a mononuclear Ru complex, N, P-containing porous organic polymers (POPs), and mesoporous hollow carbon spheres (MHCS). The optimized catalyst exhibited high catalytic activity and durability, attributed to the high surface area and large pore volume of MHCS, as well as the dispersion and stabilization capability of POPs. Ru3+-POPs encapsulated into MHCS reduced the activation energy barrier for CO2 hydrogenation.
Article
Nanoscience & Nanotechnology
Yukari Yamazaki, Tetsuya Toyonaga, Naoto Doshita, Kohsuke Mori, Yasutaka Kuwahara, Suzuko Yamazaki, Hiromi Yamashita
Summary: Hydrogen spillover induces defects in TiO2, improving conductivity and visible light absorption. Crystal facet engineering enhances activity by influencing electron and hole recombination. Pt-deposited TiO2-x nanorods synthesized through crystal facet engineering exhibit high catalytic activity under visible light.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Yasutaka Kuwahara, Masahiro Okada, Hao Ge, Hiromi Yamashita
Summary: The reduction of alpha-MoO3 using hydrogen spillover process combined with noble metal nanoparticles leads to the formation of hydrogen molybdenum bronze with plasmon-induced optical features. Pd-loaded hydrogen molybdenum bronze catalyst effectively promotes the hydrodeoxygenation of aromatic ketones to alkyl aromatics, and this catalytic activity is further enhanced under visible light irradiation due to the plasmonic effect.
Article
Engineering, Environmental
Ting Zhang, Yichan Wen, Zhelun Pan, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita, Yixin Zhao, Xufang Qian
Summary: Fenton reaction plays important roles in biological and environmental remediation, but the low efficiency of H2O2/Fe(II/III) oxidation under acidic conditions limits its application. The study reveals that carbon quantum dots (CQDs) exhibit a higher H2O2 utilization efficiency and can improve the selectivity of toxic intermediates. Furthermore, the CQDs-Fe(III)/H2O2 process is less affected by inorganic ions and dissolved organic matter (DOM) in groundwater.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Applied
Zaza Hazrina Hashim, Yasutaka Kuwahara, Aiko Hanaki, Abdul Rahman Mohamed, Hiromi Yamashita
Summary: Investigations have been conducted on the use of excess slag waste in the iron and steel making industries, leading to the development of a carbon dioxide (CO2) capturing adsorbent. Various analytical techniques were employed to determine the morphological and physicochemical characteristics of the synthesized samples, revealing that the adsorbent synthesized using formic acid exhibited the highest CO2 adsorption capacity and regenerative ability. This environmentally friendly and economical adsorbent with high adsorption and reuse capability is advantageous for reducing CO2 emissions from the industry and promoting its long-term sustainability.
Article
Chemistry, Applied
Priyanka Verma, Kenjirou Tamaki, Toru Shimojitosho, Takeharu Yoshii, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Summary: The study focuses on the effect of surface plasmon resonance on noble metal nanoparticles, and finds that coupling gold nanorods with Pd-rGO nanocomposite can enhance the catalytic performance. The successful synthesis of Pd/Au NRs@rGO catalyst was confirmed by various characterization techniques. Under visible light irradiation conditions, medium-sized gold nanorods show superior catalytic performance.
Article
Chemistry, Applied
Kenjirou Tamaki, Priyanka Verma, Takeharu Yoshii, Toru Shimojitosho, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Summary: Research on the use of surface plasmon resonance induced by visible to near-infrared light for photocatalytic reactions has gained attention for solar energy utilization. This study focused on the synthesis and characterization of Pd/Au NRs@rGO nanocatalyst, which showed improved photocatalytic yield of formic acid through plasmon-mediated catalytic reactions under visible light irradiation. The prepared catalyst exhibited efficient transport of hot electrons to the reaction substrate, leading to a 2.7-fold increase in formic acid yield compared to dark reaction conditions.
Article
Chemistry, Physical
Hao Ge, Yasutaka Kuwahara, Kazuki Kusu, Zhenfeng Bian, Hiromi Yamashita
Summary: This study demonstrates a simple strategy of utilizing plasmonic absorption effect to enhance the photothermal catalysis of CO2 to CH4. In situ infrared spectroscopic analysis reveals the pathway of the photothermal catalytic CO2 methanation reaction. This research provides new insights for developing efficient plasmonic catalysts for CO2 methanation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Nanoscience & Nanotechnology
Dmitri A. Bulushev, Fedor S. Golub, Svetlana Trubina, Valentina V. Zvereva, Lyubov G. Bulusheva, Evgeny Y. Gerasimov, Miriam Navlani-Garcia, Anna D. Krot, Himanshu Sekhar Jena
Summary: In this study, we synthesized single-atom Pd catalysts supported on different materials and tested their catalytic performance in formic acid decomposition for hydrogen production. The Pd/CTF-1 catalyst showed the highest performance, while the Pd/bipyCTF catalyst exhibited very high selectivity at higher temperatures.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Dmitri A. Bulushev, Fedor S. Golub, Svetlana V. Trubina, Valentina V. Zvereva, Evgeny Y. Gerasimov, Igor P. Prosvirin, Miriam Navlani-Garcia, Himanshu Sekhar Jena
Summary: Covalent triazine frameworks (CTF) have been used as supports for metal catalysts, and the nature of the CTF support can influence the catalytic properties. In this study, Pd catalysts supported on hatnCTF and acacCTF were compared with a Pd/g-C3N4 catalyst for formic acid decomposition. The Pd/hatnCTF catalyst showed significantly higher activity, attributed to single-atom Pd2+-C1N3 sites as the main active species.
ACS APPLIED NANO MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Hao Ge, Yasutaka Kuwahara, Hiromi Yamashita
Summary: The review explores the potential use of defective molybdenum oxide (HxMoO3-y) as a promising plasmonic material for various catalytic reactions due to its strong plasmonic absorption. The LSPR effect of HxMoO3-y can be tuned by controlling the doping amount, leading to the formation of unique and useful active sites in catalytic processes.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Hao Ge, Yasutaka Kuwahara, Kazuki Kusu, Hisayoshi Kobayashi, Hiromi Yamashita
Summary: This study presents a novel approach for photothermal catalytic reduction of CO2 using a Mo-doped Pt/WOy catalyst. The Pt/HxMoWOy catalyst exhibits excellent catalytic performance due to the abundance of surface free electrons and oxygen vacancies which play a crucial role in CO2 adsorption and transfer of photoinduced electrons. Experimental and analytical results confirm the feasibility and mechanism of this catalyst, with Mo doping being shown to promote the formation of oxygen vacancies.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Materials Science, Multidisciplinary
Mario Garcia-Rodriguez, Gabriel Alemany-Molina, Lorena Maria Sanchez-Moreno, Jessica Alejandra Chaparro-Garnica, Javier Fernandez-Catala, Laura Cano-Casanova, Angel Berenguer-Murcia, David Salinas-Torres, Miriam Navlani-Garcia
BOLETIN DEL GRUPO ESPANOL DEL CARBON
(2022)
Article
Chemistry, Multidisciplinary
Priyanka Verma, Yasutaka Kuwahara, Kohsuke Mori, Robert Raja, Hiromi Yamashita
Summary: Plasmonic nanostructures offer unique opportunities for enhancing chemical reactions under light irradiation. However, challenges such as lower efficiency, stability, and understanding of reaction mechanisms still exist. This review explores plasmonic catalysis, including trends, challenges, and applications, using advanced characterization techniques to establish the structure-property relationship of plasmonic hybrid nanostructures based on noble metals in hydrogen generation and CO2 reduction reactions.
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)
