Article
Chemistry, Physical
Fubo Gu, Xuetao Qin, Liu Pang, Ri Zhang, Mi Peng, Yao Xu, Song Hong, Jinglin Xie, Meng Wang, Dongmei Han, Dequan Xiao, Guangsheng Guo, Xiayan Wang, Zhihua Wang, Ding Ma
Summary: Direct oxidation of methane into value-added liquid chemicals utilizing rhodium dispersed on ZSM-5 catalysts under mild conditions shows high selectivity and efficiency. Increasing acidity over the catalyst improves methane conversion and formic acid selectivity, with activation of C-H bonds even at room temperature.
Review
Chemistry, Physical
Bernard Chukwuemeka Ekeoma, Mohammad Yusuf, Khairiraihanna Johari, Bawadi Abdullah
Summary: Dry reforming of methane (DRM) is a green alternative for utilizing greenhouse gases and producing syngas. The main limitations of DRM are catalyst sintering and coking. Recent studies have focused on Ni-based catalysts for DRM due to economic constraints on noble metal-based catalysts. Mesoporous silica (MS) supported catalysts show promise due to their high surface areas, thermal stability, and easy availability. However, research on MS as a catalyst support for DRM is still limited.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Ngoc Thang Tran, Thong Le Minh Pham, Trinh Duy Nguyen, Nguyen Van Cuong, Tan Ji Siang, Pham T. T. Phuong, A. A. Jalil, Quang Duc Truong, Sumaiya Zainal Abidin, Ftwi Y. Hagos, Sonil Nanda, Dai-Viet N. Vo
Summary: The study demonstrated that mesoporous gamma-alumina (gamma-Al2O3) synthesized as a support for Co catalyst showed excellent stability and high performance in methane dry reforming, indicating potential applications in the field.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Thiago Gomes de Araujo Moreira, Jose Faustino Souza de Carvalho Filho, Yuri Carvalho, Joao Monnerat Araujo Ribeiro de Almeida, Pedro Nothaft Romano, Eduardo Falabella Sousa-Aguiar
Summary: The study revealed that rhodium-based catalysts showed higher stability and catalytic performance in the dry reforming of methane reaction compared to nickel-based catalysts.
Article
Engineering, Environmental
Sungjoon Kweon, Sohun Oh, Siyeon Lee, Hyung-Ki Min, Min Bum Park
Summary: In this study, magnesium silicate delaminated MWW layers with two-dimensional crystal morphology were successfully synthesized. The crystal structures of Mg-DMLs and their magnesium content and basicity were found to change with increasing hydrothermal temperature. The X-ray photoelectron spectroscopy study showed the impact of magnesium species abundance on catalytic activity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Xiaobo Feng, Jie Yao, Yan Zeng, Yu Cui, Shun Kazumi, Reubroycharoen Prasert, Guangbo Liu, Jinhu Wu, Guohui Yang, Noritatsu Tsubaki
Summary: Converting syngas into ethanol remains a challenge, but a new route has been opened by converting dimethyl ether to methyl acetate on zeolite and further hydrogenating to ethanol on a Cu-based catalyst. By utilizing a nano-sized ZSM-35 zeolite and an auto-reduced CuZnAl catalyst, ethanol synthesis has been achieved with stable DME conversion and MA selectivity under optimized conditions.
Review
Chemistry, Physical
Jinxiong Tao, Yuxi Liu, Jiguang Deng, Lin Jing, Zhiquan Hou, Lu Wei, Zhiwei Wang, Hongxing Dai
Summary: The emission of methane contributes to the greenhouse effect and environmental problems. Conventional palladium catalysts are unstable under harsh conditions, but zeolite-supported noble metal catalysts show promise. This review summarizes the development and characteristics of these catalysts for methane combustion and highlights the importance of high-performance catalysts under realistic conditions.
Review
Chemistry, Physical
A. H. Hatta, A. A. Jalil, N. S. Hassan, M. Y. S. Hamid, A. F. A. Rahman, L. P. Teh, D. Prasetyoko
Summary: This paper provides a detailed overview of bimetallic catalysts for CO methanation, including the synthesis method and its effect on physicochemical characteristics. The bimetallic catalyst can enhance reaction effectiveness by adjusting the interaction between metal-support and metal-metal, and it also improves particle size and dispersion. The paper also presents the mechanism of CO methanation over the bimetallic catalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Borna Zandkarimi, Patricia Poths, Anastassia N. Alexandrova
Summary: Size selection does not completely suppress Ostwald ripening of supported catalytic nanoparticles due to the presence of different geometric and electronic structures. A competing pathways theory has been proposed to describe the size-specific sintering behavior at the atomistic level.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Younhwa Kim, Sungsu Kang, Dohun Kang, Kyung Rok Lee, Chyan Kyung Song, Jongbaek Sung, Ji Soo Kim, Hyunjoo Lee, Jungwon Park, Jongheop Yi
Summary: The study successfully developed a supported single-phase nanocatalyst by controlling the interaction between metal oxide and h-BN support. By utilizing this catalyst, single-phase corundum-Rh2O3(I) formation was achieved, leading to the successful production of syngas in methane partial oxidation with a H-2/CO ratio of 2.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Applied
Pedro Nothaft Romano, Jose Faustino Souza de Carvalho Filho, Joao Monnerat Araujo Ribeiro de Almeida, Eduardo Falabella Sousa-Aguiar
Summary: A series of mono and bimetallic catalysts based on Ni, Rh, and Pd supported on different materials were evaluated for the dry reforming of methane reaction. Ni-based catalysts suffered from deactivation but could be regenerated, while Pd-based catalysts deactivated due to coke deposition. Rh-based catalysts showed remarkable activity and stability.
Article
Thermodynamics
Nerijus Striugas, Kestutis Zakarauskas, Rolandas Paulauskas, Aurimas Lisauskas, Adolfas Jancauskas
Summary: Biomass is a main renewable energy source and biomass conversion technologies, such as plasma-assisted gasification, can be used for biomethane production. The performance of two catalysts, magnesium nickel and magnesium nickel hydride, were investigated and found to have good activity and functionality for converting carbon dioxide and carbon monoxide-containing syngas.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Chemistry, Applied
A. Portillo, A. Ateka, J. Ere Na, J. Bilbao, A. T. Aguayo
Summary: Different acid catalysts, such as SAPO-34, have been tested in the direct synthesis of light olefins. The presence of strongly acidic sites in SAPO-34 favors the reaction mechanism and shape selectivity, resulting in higher olefins selectivity. However, the catalysts undergo deactivation due to coke deposition, and the regeneration of SAPO-34 requires the removal of soft coke and combustion of hard coke.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Physical
Patricia Poths, Guangjing Li, Tsugunosuke Masubuchi, Harry W. T. Morgan, Zisheng Zhang, Anastassia N. Alexandrova, Scott L. Anderson
Summary: Supported sub-nano clusters have great potential as economical and active catalysts, but rapid deactivation by poisoning and sintering hinders their widespread use. However, self-limiting poisoning can actually stabilize and enhance cluster catalysis, as evidenced by Pt-Ge alloy clusters supported on alumina which undergo slow and self-limiting coking under thermal dehydrogenation conditions. The resulting Pt4GeC2 clusters exhibit high catalytic activity and selectivity against further coking, suggesting a practical approach to cluster catalysis.
Article
Chemistry, Applied
Chenguang Wang, Chengyan Wen, Zheng Liang, Zhipeng Tian, Qian Jiang, Yuhe Liao, Xunzhu Jiang, Lungang Chen, Qiying Liu, Longlong Ma, Michiel Dusselier
Summary: A unique structured hybrid catalyst composed of Fe3O4 nanoparticles and acidic zeolite is developed for the direct conversion of syngas to aromatics. The catalyst achieves a high aromatic productivity of 214 mmol(aromatics) h (1) gFe (1) with a remarkable 62% aromatic selectivity in hydrocarbons. It also exhibits excellent sintering resistance ability and maintains stable aromatics production over 570 hours.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Tat Boonyakarn, Jan J. Wiesfeld, Miyuki Asakawa, Lulu Chen, Atsushi Fukuoka, Emiel J. M. Hensen, Kiyotaka Nakajima
Summary: An acetal protection strategy was used to efficiently synthesize 2,5-diformyfuran. Organic deposits formed during the reaction led to a decrease in catalyst activity, which could be resolved by sonication treatment.
Article
Chemistry, Multidisciplinary
Takuya Sagawa, Hirokazu Kobayashi, Chinatsu Murata, Yukatsu Shichibu, Katsuaki Konishi, Mineo Hashizume, Atsushi Fukuoka
Summary: Chitin is a rich marine biomass that can be used to produce renewable organonitrogen compounds. This study focuses on the catalytic conversion of 2-acetamide-2-deoxysorbitol (ADS) into oxazolidinones. Specifically, the isomer 2,3-OX, which possesses specific chirality suitable for antibiotic applications, was selectively obtained with a high yield using the ubiquitous base catalyst KHCO3. DFT calculations revealed that innermolecular hydrogen bonds in the transition states play a crucial role in the selective formation of 2,3-OX.
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2022)
Article
Chemistry, Physical
Jan J. Wiesfeld, Miyuki Asakawa, Takayuki Aoshima, Atsushi Fukuoka, Emiel J. M. Hensen, Kiyotaka Nakajima
Summary: A novel catalytic strategy involving protective chemistry has been developed for the selective production of FFCA and FDCA from concentrated HMF solutions. By protecting the reactive formyl group of HMF with PDO, degradation and premature oxidation of HMF is suppressed. The presented chemistry contributes to the development of novel manufacturing routes of prospective biobased monomer precursors using protecting agents.
Article
Chemistry, Physical
Yayati Naresh Palai, Abhijit Shrotri, Atsushi Fukuoka
Summary: Selective production of succinic acid from furfural with H2O2 over a pure Lewis acid catalyst, Sn-Beta, was reported. The optimized reaction conditions resulted in a 53% yield of succinic acid, and the catalyst was recyclable. The Sn-Beta catalyst activates furfural by coordinating to the carbonyl group, and does not activate H2O2.
Article
Chemistry, Multidisciplinary
Hirokazu Kobayashi, Yusuke Suzuki, Takuya Sagawa, Makoto Saito, Atsushi Fukuoka
Summary: Oligosaccharides, especially chitin-oligosaccharides, have important functions in various fields, particularly in agriculture. However, the selective synthesis of oligosaccharides has been a challenge. In this study, a carbon catalyst was used to convert chitin into chitin-oligosaccharides with high selectivity and good yields.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Nazmul H. Md. Dostagir, Atsushi Fukuoka, Abhijit Shrotri
Summary: In this study, a mixed oxide catalyst doped with indium (In) was found to selectively synthesize CO at low temperature and high pressure, with a formation rate of 22 μmol g(-1) s(-1). The CO selectivity exceeded 99% at 350℃ and 3 MPa pressure. The catalyst exhibited durability for over 100 hours of continuous operation. The formation of methanol and methane was limited due to the redox mechanism of the catalyst at the oxide interface. This study highlights the development of a promoter-free oxide catalyst for CO2 hydrogenation and emphasizes the importance of the redox property for selective synthesis of CO2 to CO under unfavorable conditions.
Article
Chemistry, Physical
Aika Harako, Shuhei Shimoda, Keita Suzuki, Atsushi Fukuoka, Tomoya Takada
Summary: Electron beam (EB) irradiation was used to improve the photocatalytic efficiency of graphitic carbon nitride (g-C3N4) for Rhodamine B (RhB) decomposition. Irradiation up to 200 kGy increased the efficiency, but further irradiation decreased it. EB irradiation altered the chemical structure and surface properties of g-C3N4. Low-dose irradiation introduced defects and increased surface hollow depth, improving the photocatalytic efficiency. In contrast, high-dose irradiation decreased surface hollow depth due to intense structural destruction.
CHEMICAL PHYSICS LETTERS
(2023)
Review
Energy & Fuels
Atsushi Fukuoka, Hirokazu Kobayashi
Summary: This review article summarizes our research on heterogeneous catalysis for converting cellulose and chitin into valuable chemicals. We discovered that Pt supported on carbon is a more active and durable catalyst for cellulose hydrolysis, and weakly acidic carbon can be used for the synthesis of glucose and other valuable cello-oligosaccharides. We also studied the depolymerization of chitin to oligomers and N-acetylglucosamine using mechanocatalysis.
JOURNAL OF THE JAPAN PETROLEUM INSTITUTE
(2023)
Article
Chemistry, Multidisciplinary
Abhijit Shrotri, Kiko Eguchi, Lina Mahardiani, Hirokazu Kobayashi, Masakuni Yamashita, Hiroshi Yagita, Atsushi Fukuoka
Summary: Cellulose hydrolysis to glucose using a heterogeneous catalyst can be achieved by solvent-assisted adsorption as a pretreatment step, wherein phosphoric acid (H3PO4) performs better than other solvents. This method has a high glucose yield of 73%.
CHEMISTRY-SWITZERLAND
(2023)
Review
Chemistry, Physical
Yayati Naresh Palai, Atsushi Fukuoka, Abhijit Shrotri
Summary: This article summarizes the recent developments in catalytic synthesis of C4 chemicals from biomass-derived sugars and their derivatives, and suggests future research directions. C4 chemicals play a vital role in the chemical industry, and sourcing them from biomass can reduce reliance on petrochemicals.
Article
Engineering, Environmental
Ryoto Ono, Shuhei Shimoda, Atsushi Fukuoka, Tomoya Takada
Summary: We investigated the effects of pore structure and adsorption conditions on the fluoride removal capacity of Zr-modified porous carbons. Zr modification significantly improved the adsorption capacity of the porous carbons, with the maximum amount of fluoride adsorbed increasing by 3-10 times. The adsorption capacity depended on the pore size and was influenced by pH and the presence of coexisting anions.
CHEMICAL ENGINEERING JOURNAL ADVANCES
(2023)
Article
Chemistry, Physical
Lingcong Li, Abhijit Shrotri, Kazuya Kato, Atsushi Fukuoka, Hirokazu Kobayashi
Summary: This study demonstrates that a mordenite-supported rhenium catalyst is more active and resistant to oxidation compared to traditional oxide-supported rhenium catalysts in the partial oxidation of methane reaction. The catalyst produces CO and H-2 at high yields and low temperatures, with mordenite stabilizing low valent rhenium species that facilitate the direct oxidation pathway of methane.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Hirokazu Kobayashi, Takuya Sagawa, Atsushi Fukuoka
Summary: This article summarises several methods for converting chitin into N-acetylglucosamine and oligomers, and introduces the importance and application prospects of chitin for establishing a sustainable carbon and nitrogen cycle.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Daniele Padovan, Koichiro Endo, Takeshi Matsumoto, Toshiyuki Yokoi, Atsushi Fukuoka, Hideki Kato, Kiyotaka Nakajima
Summary: The acid-base properties of amphoteric crystalline YNbO4 are adjusted by impregnating phosphate groups, resulting in materials with increased activity and selectivity in glucose dehydration. The introduction of phosphate groups leads to the optimal catalyst, 5P-YNbO4, which exhibits 50% selectivity at 75% conversion. The catalyst can be deactivated due to carbon deposits, but its activity can be completely recovered through washing and calcination.
Article
Chemistry, Physical
Takeshi Mori, Tatsuhiro Shigyo, Takafumi Nomura, Yuki Osanai, Kiyotaka Nakajima, Atsushi Fukuoka
Summary: This study investigates the ethylene oxidation activities of silica-supported platinum-based catalysts and demonstrates their effectiveness in delaying the ripening of perishables and extending their shelf-lives. The rate of ethylene production from the perishables and the rate of ethylene decomposition by the catalysts were successfully quantified, allowing for estimation of the minimum amount of catalyst required for practical application in storage rooms.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Zi-Ye Liu, Qian-Yu Wang, Ji-Ming Hu
Summary: In this study, a layered carbon dot composite catalyst (NiFe LDH@CDs) was prepared using a one-step coprecipitation method, without the need for heating or hydrothermal treatment. The CD-functionalized catalyst facilitated rapid charge transfer and accelerated the oxygen evolution reaction. Additionally, the heterojunction structure formed between NiFe LDH and CDs efficiently suppressed photoelectron-hole recombination.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Rohit Kumar, Ankit Kumar Srivastava, Palaniyappan Nagarasu, Vedichi Madhu, Ekambaram Balaraman
Summary: We designed and synthesized a NN-CoII bidentate complex and used it for the amination of alcohols under mild and solventless conditions. The complex exhibited good reactivity towards both primary and sterically hindered secondary alcohols, providing high yields of amines. The pyrazole moiety in the ligand played a crucial role in the reaction. Furthermore, we demonstrated the reusability of the complex as a homogeneous cobalt catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Shivanand Chettri, Liang-Ting Wu, Sagarmani Rasaily, Debesh Sharma, Bikram Gurung, Rajani Dewan, Sudarsan Tamang, Jyh-Chiang Jiang, Anand Pariyar
Summary: Replicating the enzymatic surface microenvironment in vitro is challenging, but constructing an analogous model could facilitate our understanding of surface effects and aid in developing an efficient bioinspired catalytic system. In this study, five unique Cu2O morphologies were generated, and the surface morphology variations were found to be a consequence of differences in the exposure of low-index facets. The reactivity of Cu2O was found to be influenced by the proportion of {110} planes, with r-Cu2O exhibiting the highest reactivity.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Yong Tang, Jianhao Qiu, Dingliang Dai, Guanglu Xia, Lu Zhang, Jianfeng Yao
Summary: Defect engineering has been shown to improve the photocatalytic performance. This study investigated the use of defect-rich UiO-66-NH2 wrapped by ZnIn2S4 as a catalyst for photocatalytic H2O2 production. The defects in UiO-66-NH2 enhanced O-2 adsorption and charge separation, leading to higher H2O2 yield. The insights from this work can advance the research in defect engineering of MOFs and photocatalytic H2O2 synthesis.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Ruiyang Qu, Shuxin Mao, Jana Weiss, Vita A. Kondratenko, Evgenii V. Kondratenko, Stephan Bartling, Haifeng Qi, Annette-Enrica Surkus, Kathrin Junge, Matthias Beller
Summary: The hydrogenation of amides, a challenging reaction usually performed at high temperatures, has been achieved under milder conditions using a new Pt-MoOx/TiO2 catalyst. This catalyst system enables the selective hydrogenation of various amides and imides.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Xiaoran Niu, Ao Wang, Lei Tong, Lei Wang, Yuan Kong, Chenliang Su, Hai-Wei Liang
Summary: This study introduces a novel intermetallic PdCu3 catalyst supported on defective nanodiamond-graphene (ND@G), which exhibits high selectivity (95%) and remarkable activity (turnover frequency: 2940 h(-1)), six times higher than that of the commercial Lindlar catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Review
Chemistry, Physical
Zhiyuan Zheng, Yiming Yue, Hongying Zhuo, Qinggang Liu, Yanqiang Huang
Summary: This review presents the recent research advances on single-atom catalysis for deep reduction of CO2. Detailed introductions and summaries were classified into three categories based on proton-coupled multi-electron transfer approaches: strengthening metal-support interaction, rational design and regulation of coordination environment, and development of SACs with multi-atom active sites. The challenges and future research directions in the field of SACs for CO2 reduction are also proposed.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Shiv Kumar, Paramita Datta, Anup Bhunia, Swadhin K. Mandal
Summary: This article reports a transition-metal-free process for in situ denitrogenation of tosylhydrazones, resulting in the production of various sulfones. The authors used a phenalenyl-based odd alternant hydrocarbon as a photoredox catalyst, which acted as a potent oxidant to facilitate the denitrogenation reaction. The method showed wide functional-group tolerance and high yields, making it suitable for late-stage modification of natural products.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
L. A. Luque-Alvarez, J. Gonzalez-Arias, F. Romero-Sarria, T. R. Reina, L. F. Bobadilla, J. A. Odriozola
Summary: Currently, the production of acetic acid through the carbonylation reaction of methanol has limitations, leading to the exploration of alternative methods using heterogeneous catalysts. This study investigates the methanol carbonylation reaction over a Cu-H-MOR catalyst and proposes a reaction mechanism based on the catalytic behavior and performance of the catalyst. The results provide insights into the reaction mechanism and the involvement of acid and redox centers.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
