Article
Chemistry, Inorganic & Nuclear
Shun Ge, Lishan Gong, Pingping Yi, Xiufang Mo, Chao Liu, Xiao-Yi Yi, Piao He
Summary: A series of novel Cp*Ir complexes with nitrogen-rich NN bidentate ligands were developed for efficient catalytic dehydrogenation of formic acid in water. The study reveals the influence of ligand structure and water-assisted reaction steps on the catalytic activity, and proposes a plausible reaction mechanism.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Fuhua Xu, Wenkai Huang, Yanlan Wang, Didier Astruc, Xiang Liu
Summary: A simple and surfactant-free method was used to construct M16Pd1/C bimetallic nanomaterials for direct H-2 production by sodium formate (SF) decomposition in the presence of acetic acid. A highly selective on-off switch for on-demand H-2 release from SF was successfully developed by pH regulation.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Physical
Zaheer Khan, Ommer Bashir, Shaeel Ahmad AL-Thabaiti, M. Z. A. Rafiquee
Summary: The synthesis of glycine-capped copper nanoparticles was achieved using a complex-reduction method. The catalytic activity was found to increase with an increasing number of incorporated metals. Various kinetic parameters were calculated for different concentrations of promoter, catalyst, and temperature.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Review
Energy & Fuels
Dmitri A. Bulushev
Summary: Metal complexes serve as efficient catalysts for hydrogen production from formic acid, but difficulty in separation limits industrial applications; supporting metal complexes on different surfaces can provide surface sites for formic acid activation and improve performance; stable Ru and Ir supported metal complexes show higher catalytic activity than homogeneous metal complexes.
Article
Chemistry, Multidisciplinary
Risheng Li, Tetsuya Kodaira, Hajime Kawanami
Summary: In this study, a newly developed in situ/operando UV-vis-diffuse-reflectance spectroscopy system was used to continuously monitor catalytic formic acid dehydrogenation. By applying a simple method on the generated gas concentration in the center of a round cell through high-speed stirring, reliable spectra with a high S/N ratio were obtained without any mechanical errors from gas meters.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Liwei Guo, Zilong Li, Marie Cordier, Remi Marchal, Boris Le Guennic, Cedric Fischmeister
Summary: Research has found that new ruthenium and iridium complexes can efficiently dehydrogenate formic acid without any additives, providing a new approach to reducing the cost of energy transition.
Article
Nanoscience & Nanotechnology
Shahram Shaybanizadeh, Alireza Najafi Chermahini, Rafael Luque
Summary: The effective stabilization and uniform distribution of bimetallic Pd-Au alloy nanoparticles on boron nitride nanosheets enable high activity and selectivity for dehydrogenation of formic acid. Various factors that affect the reaction conditions were investigated.
Correction
Chemistry, Inorganic & Nuclear
Alejandra Gomez-Espana, Jorge L. Lopez-Morales, Belinda Espanol-Sanchez, Pilar Garcia-Orduna, Fernando J. Lahoz, Manuel Iglesias, Francisco J. Fernandez-Alvarez
Summary: This article investigates the catalytic performance of iridium complexes in the dehydrogenation of formic acid and examines the effect of auxiliary ligands on the catalytic performance.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Pengyu Xu, Fernando D. Bernal-Juan, Leon Lefferts
Summary: The addition of traces of oxygen can suppress the deactivation of Pd/γ-Al2O3 catalysts during formic acid decomposition, leading to improved H2 production efficiency. Oxygen preferentially oxidizes CO over H2, with the best effect observed when oxygen concentration is maintained below 0.1%.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Anqi Dong, Qing Jiang, Yitong Zhou
Summary: Efficient catalysts for formic acid decomposition have been extensively studied. In this study, the Au3Pd1 intermetallic compound is designed as a single atom catalyst for formic acid dehydrogenation. The thermodynamic stability, electronic structure, and reaction mechanism of the Au3Pd1 catalyst are systematically investigated, and it is found that surface charge polarization and atom-ordered arrangement play an important role in the efficient dehydrogenation process. The results suggest that this intermetallic-based catalyst can be applied to other systems and provide general guidance for designing efficient catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Hamed M. Alshammari, Mohammad Hayal Alotaibi, Obaid F. Aldosari, Abdulellah S. Alsolami, Nuha A. Alotaibi, Yahya A. Alzahrani, Mosaed S. Alhumaimess, Raja L. Alotaibi, Gamal A. El-Hiti
Summary: This study investigates the selective production of hydrogen through the catalytic decomposition of formic acid in the presence of iridium and iridium-palladium nanoparticles. Different conditions were tested, with the best results achieved at a certain temperature and formic acid concentration. The process shows promise for potential commercial applications.
Article
Chemistry, Physical
Nicolas Lentz, Martin Albrecht
Summary: This article reports on a highly efficient iridium-based catalyst for formic acid dehydrogenation. The catalyst exhibits high turnover frequencies and turnover numbers, and is characterized by its low cost and easy accessibility, making it suitable for industrial applications.
Article
Chemistry, Physical
Indranil Dutta, Sudipta Chatterjee, Hongfei Cheng, Rajesh Kumar Parsapur, Zhaolin Liu, Zibiao Li, Enyi Ye, Hajime Kawanami, Jonathan Sze Choong Low, Zhiping Lai, Xian Jun Loh, Kuo-Wei Huang
Summary: The storage and utilization of low-carbon electricity and decarbonization of transportation are crucial for the energy transition into a low-carbon economy. Formic acid (FA) is considered a promising energy carrier due to its high hydrogen storage capacity and low risk. This perspective summarizes recent developments in catalysts for FA dehydrogenation and high-pressure hydrogen production, highlighting the advantages and limitations of FA-to-power options. Existing life cycle assessment and economic analysis studies are reviewed to discuss the feasibility and future potential of FA as a fuel.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Nanxing Gao, Dongchen Han, Tongtong Yang, Qinglei Meng, Xian Wang, Changpeng Liu, Junjie Ge, Wei Xing
Summary: This study reveals the crucial role of water in formic acid dehydrogenation, showing that a water-promoted restructured catalyst exhibits high selectivity and stability. It provides a new pathway for green hydrogen storage and release.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Daoyu Dong, Weitao Yan, Yaqiu Tao, Yunfei Liu, Yinong Lu, Zhigang Pan
Summary: In this study, composite catalysts of MoS2 and MoO2 were prepared using a one-step hydrothermal method and used for photocatalytic hydrogen production. The 2H-MoS2/MoO2 composite catalyst showed the best performance with 48% MoO2 content, achieving a hydrogen yield of 960 mu mol/h and an improved selectivity by 22%. The excellent performance of the composite catalyst was attributed to the formation of a heterogeneous structure between MoS2 and MoO2, improving the migration of photogenerated carriers and reducing the possibilities of recombination.
Article
Chemistry, Physical
Ken Motokura, Sae Kawashima, Masayuki Nambo, Yuichi Manaka, Wang-Jae Chun
Article
Chemistry, Multidisciplinary
Ria Ayu Pramudita, Yuichi Manaka, Ken Motokura
CHEMISTRY-A EUROPEAN JOURNAL
(2020)
Article
Chemistry, Physical
Fumihiko Kosaka, Toshiaki Yamaguchi, Yuji Ando, Takehisa Mochizuki, Hideyuki Takagi, Koichi Matsuoka, Yoshinobu Fujishiro, Koji Kuramoto
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Chemistry, Physical
Fumihiko Kosaka, Toshiaki Yamaguchi, Yuji Ando, Takehisa Mochizuki, Hideyuki Takagi, Koichi Matsuoka, Koji Kuramoto
Summary: The study proposes a method to manage temperature distribution in CO2 methanation reactors by using gradient-distributed Ni-YSZ catalysts. The catalyst successfully prevents hotspot formation at the reactor inlet, resulting in high CH4 yields with minimal temperature differences in the reactor. This approach using gradient-distributed catalysts could be a potential method to achieve high CO2 conversion in compact reactors.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Tetsuya Nanba, Yuki Nagata, Keisuke Kobayashi, Rahat Javaid, Ryosuke Atsumi, Masayasu Nishi, Takehisa Mochizuki, Yuichi Manaka, Hirokazu Kojima, Taku Tsujimura, Hideyuki Matsumoto, Takayoshi Fujimoto, Koichi Suzuki, Takahiro Oouchi, Sho Kameda, Yuki Hoshino, Sho Fujimoto, Mototaka Kai, Yasushi Fujimura
Summary: Ru/CeO2 catalysts have potential for catalyzing the synthesis of ammonia from renewable hydrogen, with different Ru precursors and types of CeO2 influencing the activity. The optimized Ru/CeO2 catalyst showed good activity at high pressure, with CeO2 with high surface area resulting in higher synthesis rates. The effects of operation load on NH3 production were acceptable.
JOURNAL OF THE JAPAN PETROLEUM INSTITUTE
(2021)
Article
Chemistry, Physical
Megumu Inaba, Zhanguo Zhang, Koichi Matsuoka, Yasushi Soneda
Summary: The study investigated the effect of siloxane coexistence on the production of hydrogen and carbon nanofiber by methane decomposition. Siloxane addition enhanced catalytic activity, accelerated deactivation, and resulted in carbon species formation at lower temperatures. Coexistence of CO2 and siloxane prolonged the catalytic lifetime by inhibiting carbon deposition on the catalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Koichi Matsuoka, Koji Kuramoto, Sou Hosokai, Hiroaki Sato, Yosuke Tsuboi
Summary: This study found that in coal gasification, controlling the accumulation of char in the fluidized bed and optimizing operating conditions can effectively reduce tar emissions.
Review
Energy & Fuels
Yuichi Manaka
Summary: This review discusses the catalytic conversion of CO2 to chemically useful molecules, including hydrosilylation, formic acid synthesis, formic acid decomposition, and urea synthesis. These catalytic systems will aid in the sustainable recycling of CO2.
JOURNAL OF THE JAPAN PETROLEUM INSTITUTE
(2021)
Article
Energy & Fuels
Sou Hosokai, Yoshizo Suzuki, Koichi Matsuoka, Koji Kuramoto
Summary: This study investigated the characteristics of in situ coal tar reforming with char, revealing that increasing the amount of additional char decreased heavier tar and rising operation pressure restricted the reforming reaction of heavy tar with additional char. Additionally, the pore structure of char was found to be plugged after the tar-reforming reaction, resulting in a decrease in available pores with increased operation pressure.
Article
Multidisciplinary Sciences
Yuichi Manaka, Yuki Nagata, Keisuke Kobayashi, Daisuke Kobayashi, Tetsuya Nanba
Summary: This paper investigates a simple screening method for catalysts that can be used for renewable energy by combining three catalyst evaluation methods. The combination of evaluation methods can intuitively provide the necessary information for catalyst screening.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Keisuke Kobayashi, Yuichi Manaka, Tetsuya Nanba
Summary: The conversion of nitrogen monoxide (NO) to ammonia (NH3) over copper (Cu) catalysts was investigated. It was found that Cu/CeO2 exhibited high NH3 selectivity for the NO-CO-H2O reaction at temperatures above 150 degrees C, while NH3 formation in the NO-H2 reaction was almost negligible at this temperature. The enhancement of the water-gas shift reaction was proposed to be effective in the conversion of NO to NH3.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Yoshihiro Goto, Masashi Kikugawa, Keisuke Kobayashi, Yuichi Manaka, Tetsuya Nanba, Hideyuki Matsumoto, Mitsuru Matsumoto, Masakazu Aoki, Haruo Imagawa
Summary: A facile method was developed to prepare BaTiO2.5H0.5 oxyhydride nanoparticles on a TiH2 surface via the conventional wet impregnation method using TiH2 and Ba hydroxide. The Ru-loaded catalyst Ru/BaTiO2.5H0.5-TiH2 exhibited significantly higher ammonia synthesis activity than the benchmark Ru catalyst Ru-Cs/MgO due to the suppression of hydrogen poisoning. This study demonstrated the importance of appropriate raw material selection for the formation of BaTiO2.5H0.5 oxyhydride nanoparticles using the conventional synthesis method.
Article
Chemistry, Physical
Siming Ding, Yuichi Manaka, Masayuki Nambo, Wang-Jae Chun, Ikuyoshi Tomita, Ken Motokura
Summary: We have developed a mesoporous-silica-supported Pd complex catalyst that promotes the Tsuji-Trost allylation of dicarbonyl compounds with allylic alcohols. By doping the silicate backbone with aluminum, the acidity of the support is increased, leading to enhanced catalytic activity in allylation.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Yuanyuan Kong, Siming Ding, Koichiro Endo, Kiyotaka Nakajima, Yuichi Manaka, Wang-Jae Chun, Ikuyoshi Tomita, Ken Motokura
Summary: The Rh-catalyzed 1,4-addition reaction of arylboronic acid is crucial in the synthesis of beta-arylcarbonyl compounds. This study immobilized Rh complexes and organic functional groups on mesoporous silica, resulting in significantly improved catalytic activity and yield in water. The catalyst showed broad applicability to a variety of arylboronic acids and enones.
Article
Chemistry, Physical
Ken Motokura, Nao Ozawa, Risako Sato, Yuichi Manaka, Wang-Jae Chun
Summary: Utilizing elements such as iron as catalysts instead of precious metals is a key step towards environmentally friendly synthesis. The porous FeO(OH) catalyst on Mg-Al hydrotalcite demonstrated high efficiency in synthesizing 2-substituted quinoline derivatives through dehydrogenative oxidation-cyclization reactions. The process proceeded effectively under non-noble-metal catalysis in air without the need for additional homogeneous bases or solvents.
