Article
Green & Sustainable Science & Technology
M. Srida, S. -Y. Chen, S. M. Smith, C. Ngamcharussrivichai, S. Boonyuen, H. Tateno, T. Mochizuki, A. Luengnaruemitchai
Summary: This study prepared bifunctional solid acid catalysts composed of aluminum (Al) as Lewis acid sites and sulfonic acid (SA) as Bronsted acid sites by direct synthesis. These catalysts were evaluated for the conversion of glucose to 5-hydroxymethylfurfural (HMF) and the 5Al-15SA-S15 catalyst achieved 95% conversion of glucose and a 51% yield of HMF with good stability and reusability. This study provides important insights into the properties and applications of solid acid catalysts.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Multidisciplinary Sciences
Tana Tana, Pengfei Han, Aidan J. Brock, Xin Mao, Sarina Sarina, Eric R. Waclawik, Aijun Du, Steven E. Bottle, Huai-Yong Zhu
Summary: 5-hydroxymethylfurfural (HMF) is a valuable platform chemical for sustainable fine-chemical and pharmaceutical industry based on biomass. The complex of fulvic acid with Al3+ ions exhibits solar absorption and photocatalytic activity for glucose conversion to HMF in one-pot reaction, offering prospects for new green photocatalytic systems. This mechanism creates the possibility of synthesizing a range of substances that have not previously been considered.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Yue Jiang, Dongwon Ka, Andy Huu Huynh, Jihyun Baek, Rui Ning, Shang-Jie Yu, Xiaolin Zheng
Summary: In this study, the potential of 2D exfoliated MgB2 nanosheets as solid fuels is investigated for overcoming the challenges of MgB2 combustion. The oxidation behavior and energetic performance of MgB2 nanosheets are analyzed and compared with bulk MgB2, B nanoparticles, and a B/Mg nanoparticle mixture. The results highlight the potential of MgB2 nanosheets as promising solid fuels with superior energetic properties.
Article
Chemistry, Multidisciplinary
Yue Jiang, Dongwon Ka, Andy Huu Huynh, Jihyun Baek, Rui Ning, Shang-Jie Yu, Xiaolin Zheng
Summary: This study investigates the potential of 2D exfoliated MgB2 nanosheets as solid fuels and analyzes their oxidation behavior and energetic performance through material characterization and combustion tests. The results show that MgB2 nanosheets exhibit superior energetic properties.
Review
Chemistry, Multidisciplinary
Yuechao Yang, Tiancheng Mu
Summary: Electrochemical conversion is becoming a powerful and promising method for producing high-value chemicals, particularly the electrooxidation of HMF to FDCA which may replace petroleum-based PET. This review discusses the reaction pathway/mechanism, catalysts, and coupling reactions of HMF electrochemical oxidation, providing insights for utilizing and producing renewable resources.
Article
Engineering, Environmental
Xinyu Cui, Lixiao Zheng, Qi Li, Yang Guo
Summary: We have developed a novel porous carbon-based solid acid catalyst through sulfonation and metal loading, which exhibits outstanding catalytic performance in the conversion of glucose to 5-hydroxymethylfurfural (HMF). The influencing factors including reaction temperature, time, catalysts loading amount, and type of solvent were systematically investigated, and the optimal conditions were determined. This study provides important theoretical and practical guidance for efficient HMF production and sustainable utilization of biomass waste.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Katarzyna Morawa Eblagon, Anna Malaika, Karolina Ptaszynska, M. Fernando R. Pereira, Mieczyslaw Kozlowski, Jose Luis Figueiredo
Summary: The study focused on the cascade conversion of glucose to 5-hydroxymethylfurfural (HMF), a key platform commodity, as a sustainable approach for producing platform molecules from biomass. Bifunctional catalysts were prepared by depositing/precipitating Nb2O5 onto phosphorylated carbon xerogels, and the Lewis acid (LA) sites were adjusted by varying the Nb loading. The catalytic tests revealed that LA sites were important for selective glucose conversion, while the absence of LA sites led to glucose degradation to humin. The removal of strong Bronsted acid (BA) sites originating from Nb2O5 significantly increased the selectivity to HMF and achieved a maximum HMF yield of 31%.
Article
Engineering, Chemical
Ke Wang, Sijia Liu, Runming Hao, An Du, Yang Wang
Summary: By introducing a catalytic system guided by catalytic coupling at multiple length scales, a high yield and purity of HMF was achieved from glucose, while maintaining good selectivity of the catalyst in repeated use.
Article
Chemistry, Multidisciplinary
Wenze Guo, Emiel J. M. Hensen, Wei Qi, Hero J. Heeres, Jun Yue
Summary: The study presented a mesoporous Lewis-Brensted bifunctional solid acid catalyst prepared by grafting titania on SBA-15 followed by phosphation, achieving selective tandem catalysis for glucose conversion via fructose to HMF with enhanced catalytic performance and stability.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Wenze Guo, Emiel J. M. Hensen, Wei Qi, Hero J. Heeres, Jun Yue
Summary: A mesoporous solid acid catalyst was prepared by grafting titania on SBA-15 followed by phosphation. The catalyst showed high acidity and selectivity in the conversion of glucose to HMF via fructose. It exhibited good catalytic activity and stability, making it a promising catalyst for biomass conversion.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Jiehao Hu, Mengting Yu, Yao Li, Xiaoli Shen, Shenyu Cheng, Tianyou Xu, Chengsheng Ge, Yihang Yu, Zhaoyang Ju
Summary: This study investigates the dehydration mechanism of fructose to HMF catalyzed by different functionalized ILs using density functional theory calculations. The overall reaction process includes three dehydration steps, with the second step being the rate-determining step. Functionalized cations show good proton transfer ability and catalyze the dehydration reaction. Anions can form strong H-bonds with fructose and cations, providing a polar environment for stabilizing intermediates and transition states. The high catalytic activity is attributed to the synergetic catalysis of cations and anions in completing the dehydration of fructose.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Hao Zhang, Gaocan Qi, Wei Liu, Shusheng Zhang, Qian Liu, Jun Luo, Xijun Liu
Summary: Selective electrocatalytic oxidation of biomass-derived HMF to valuable FDCA using Mn-doped FePSe3 nanosheets is achieved under ambient conditions. The catalyst exhibits high faradaic efficiency, yield rate, and stability, surpassing the values for pure FePSe3. In addition, the catalyst shows excellent activity for alkaline hydrogen evolution. Furthermore, the catalyst is applied as both the anode and cathode in a single electrolyzer for simultaneous production of hydrogen and FDCA.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Forestry
Cyril Aymonier, Nikolay V. Gromov, Oxana P. Taran, Valentin N. Parmon
Summary: This study demonstrates the possibility of producing glucose and 5-HMF from inedible cellulose using solid acid catalysts based on Sibunit carbon material; the acidity of the catalyst and the nature and amount of surface acid groups affect the formation of glucose and 5-HMF; through proper processing, yields of up to 75% and 10% for glucose and 5-HMF, respectively, can be obtained from polysaccharides.
WOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Applied
Haocheng Xu, Xiaoyun Li, Wenxuan Hu, Lefu Lu, Jingguang Chen, Yameng Zhu, Huanran Zhou, Chuanling Si
Summary: This article reviews the research progress of solid acid catalysts in the conversion of biomass to 5-hydroxymethylfurfural (HMF). The advantages and disadvantages of different catalytic systems are evaluated, and the latest methods for the reactor, segregation, and depuration of HMF are discussed. This provides valuable insight for the design of efficient new solid acid catalysts and the promotion of industrial HMF production.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Hui Guo, Long Han, Humair Ahmed Baloch, Zhonghui Wang, Jia Xia, Chengkun Zhang, Xuejian Yin
Summary: This work prepared carbonaceous solid acid catalysts with Bronsted acid and Lewis acid using pine biomass as raw materials through chloride salts impregnation, carbonization, and sulfonation. The catalysts were applied to convert glucose into HMF in a biphasic system involving NaCl solution and γ-valerolactone. The results showed that the PC-2Al-SO3H catalyst achieved high glucose conversion and HMF yield, and exhibited stable activity.
RESEARCH ON CHEMICAL INTERMEDIATES
(2023)
Article
Chemistry, Multidisciplinary
Atsushi Takagaki, Wataru Obata, Tatsumi Ishihara
Summary: Calcium oxide was found to be an effective solid catalyst for the selective production of formic acid from monosaccharides in water under mild reaction conditions. The main reaction pathway involves C-C bond cleavage and base-catalyzed reactions, leading to the formation of fructose and trioses intermediates, which then further decompose into formic acid. The catalytic activity remained unchanged for further reuse after simple post-calcination.
Article
Chemistry, Physical
Maksymilian Kluczny, Jun Tae Song, Taner Akbay, Eiki Niwa, Atsushi Takagaki, Tatsumi Ishihara
Summary: This study investigates the influence of partial substitutions of Bi with Ca2+, Sr2+, Ba2+, La3+, Ga3+ and Sn4+ on the electrical properties of Sillen-Aurivillius phase Bi4NbO8Cl, finding that low valence cations substitutions are effective for increasing electrical conductivity, with Sr2+ substitution being the most effective. The oxygen-ion conductivity in Sr-doped Bi4NbO8Cl mainly occurs along the Bi2O22+ layer, indicating that it is a new family of fast oxide-ion conductors with optimized Sr doping at x = 0.1.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Atsushi Takagaki, Yuta Tsuji, Tatsuya Yamasaki, Sun Kim, Tetsuya Shishido, Tatsumi Ishihara, Kazunari Yoshizawa
Summary: This study demonstrates the importance of low-temperature activation of methane and its conversion into useful compounds. The researchers found that supported platinum oxide can activate methane near room temperature and selectively produce methanol in the presence of oxygen.
CHEMICAL COMMUNICATIONS
(2023)
Article
Electrochemistry
Dengyao Yang, Motonori Watanabe, Atsushi Takagaki, Tatsumi Ishihara
Summary: Water-acetonitrile hybrid electrolyte with high concentration of LiTFSI and LiFSI salts is studied for high potential and large capacity dual-ion battery. The hybrid electrolyte shows wide electrochemical stability window and addition of acetonitrile enhances solvation structure of water to lithium ion, improving battery performance.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Akihiko Kudo, Yoshihisa Sakata, Junko N. Kondo, Michikazu Hara, Jun Kubota, Shigeru Ikeda, Tsuyoshi Takata, Ryu Abe, Atsushi Takagaki, Takashi Hisatomi
Summary: Professor Kazunari Domen has focused on the research of catalysis, including the development of various photocatalysts, such as layered oxide and oxynitride photocatalysts, as well as oxysulfide photocatalysts with visible-light response. He has also explored water splitting using mechanocatalysis with metal oxides suspended in distilled water. In addition, Professor Domen has advanced the understanding of catalytic mechanisms through spectroscopic techniques such as transmission infrared spectroscopy and interfacial sum-frequency spectroscopy. Furthermore, he has investigated the use of carbon-based and layered solid acid materials as efficient catalysts.
Article
Chemistry, Physical
I. Tyrone Ghampson, Hiroki Miura, Junichi Murakami, Kyoko K. Bando, Tetsuya Kodaira, Atsushi Takagaki, Tatsumi Ishihara, Tetsuya Shishido
Summary: This study investigates the activation of methane with nitric oxide on Au-Pt nanoparticles supported on alumina. The reaction produces HCN through C-H bond cleavage, NO dissociation, and C-N coupling reactions. The catalysts with different Au/Pt ratios have similar particle morphology and bulk properties but exhibit differences in electronic and geometric surface properties due to Au surface enrichment. The relative proportion of electron-deficient Pt sites on the catalysts' surface correlates with their activity for CH4 conversion and HCN formation.
Article
Chemistry, Physical
Atsushi Takagaki, Kyoko K. Bando, Tatsuya Yamasaki, Junichi Murakami, Nobuya Suganuma, I. Tyrone Ghampson, Tetsuya Kodaira, Tatsumi Ishihara, Tetsuya Shishido
Summary: Methane (CH4) was converted to hydrogen cyanide (HCN) using a commercial Pt/Al2O3 catalyst with nitric oxide (NO) as an oxidant. The yield of HCN was maintained at 1% after 100 hours at 400°C and increased to 3.2% at 425°C but then decreased rapidly. In situ XAFS and FTIR measurements revealed the presence of Pt-CN species, which correlated with the production of HCN. However, these species continuously accumulated at temperatures above 400°C.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Nobuya Suganuma, I. Tyrone Ghampson, Hiroki Miura, Junichi Murakami, Kyoko K. Bando, Tetsuya Kodaira, Tatsuya Yamasaki, Atsushi Takagaki, Tatsumi Ishihara, Tetsuya Shishido
Summary: Platinum nanoparticles supported on various metal oxides were investigated for the catalytic activation of methane with nitric oxide at low temperatures and atmospheric pressure. The presence of hydrogen cyanide (HCN) was detected only on the (theta + gamma)-Al2O3-supported Pt catalyst. The difference in catalytic behavior for C-N coupling was found to be related to the relative concentrations of adsorbed CHx and NO species.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Xiao-Feng Shen, Motonori Watanabe, Jun Tae Song, Atsushi Takagaki, Tatsuki Abe, Keiji Tanaka, Tatsumi Ishihara
Summary: This study investigates the effects of -F position substitution and hydrophobicity optimization on the photocatalytic activity of BODIPY dyes. Experimental and theoretical results show that -F substitution and longer alkyl chains enhance the photocatalytic activity, resulting in higher hydrogen production rate and turnover frequency. This study highlights the importance of -F position substitution and hydrophobicity optimization in enhancing the photocatalytic activity of metal-free organic dyes.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Atsushi Takagaki, Taiga Ozaki, Jun Tae Song, Eiki Niwa, Motonori Watanabe, Tatsumi Ishihara
Summary: The acid catalytic activity of strained rutile-type TiO2 can be enhanced by increasing the degree of applied strain.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Zhe Tan, Jun Tae Song, Atsushi Takagaki, Tatsumi Ishihara
Summary: The study demonstrated that Ce nitrate has a positive effect on improving the performance and stability of solid oxide cells. Infiltration of Ce at higher concentrations led to a significant reduction in IR loss and overpotential, resulting in increased maximum power density.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Electrochemistry
Tomohiro Mishina, Naoya Fujiwara, Shohei Tada, Atsushi Takagaki, Ryuji Kikuchi, Shigeo Ted Oyama
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2020)
Article
Chemistry, Physical
Nuttavut Kosem, Yuki Honda, Motonori Watanabe, Atsushi Takagaki, Zahra Pourmand Tehrani, Fatima Haydous, Thomas Lippert, Tatsumi Ishihara
CATALYSIS SCIENCE & TECHNOLOGY
(2020)
Article
Chemistry, Physical
Siman Fang, Atsushi Takagaki, Motonori Watanabe, Tatsumi Ishihara
CATALYSIS SCIENCE & TECHNOLOGY
(2020)
Article
Chemistry, Physical
Yoonyoung Kim, Motonori Watanabe, Junko Matsuda, Aleksandar Staykov, Hajime Kusaba, Atsushi Takagaki, Taner Akbay, Tatsumi Ishihara
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
