Article
Chemistry, Applied
Hande Gunes, Deniz Sanli Yildiz, Barkin Ozener, Gokhan Hisar, Sarshad Rommel, Mark Aindow, Selmi Erim Bozbag, Can Erkey
Summary: Pt/Al2O3 and PtPd/Al2O3 catalysts prepared via supercritical deposition method using supercritical carbon dioxide showed good catalytic activity for NO and C3H6 oxidation and C3H6-SCR reactions. Particle size and activity were affected by Pt loading and Pd addition.
Article
Chemistry, Multidisciplinary
Byeong Jun Cha, Ji Yoon Choi, Soo Hyun Kim, Shufang Zhao, Sher Ali Khan, Beomgyun Jeong, Young Dok Kim
Summary: Temperature-regulated chemical vapor deposition was used to disperse iron oxide nanoparticles on porous Al2O3 to create a catalytic Fe-oxide/Al2O3 structure for NH3 oxidation. The Fe-oxide/Al2O3 achieved almost complete NH3 removal, with N2 as the main product and no detectable NOx emissions at all temperatures. The results of spectroscopic analysis suggest an NH3 oxidation mechanism mediated by N2H4 on the Fe-oxide/Al2O3 surface. A dual catalytic filter system was designed using Fe-oxide/Al2O3 to fully oxidize NH3 to N2 in a clean and energy-efficient manner.
Article
Food Science & Technology
Fan Wang, Yan-Ning Lin, Yu Xu, Yong-Bing Ba, Zhao-Huan Zhang, Li Zhao, Wing Lam, Fu-Lan Guan, Yong Zhao, Chang-Hua Xu
Summary: In this study, the molecular sterilization mechanism of acidic electrolyzed water (AEW) on Gram-positive and Gram-negative bacteria was demonstrated using various techniques. AEW mainly induced oligopeptide destruction in bacterial cell wall, forming holes and increasing cell membrane permeability. This allowed AEW to invade the cell and demolish nucleic acids and other bioactive substances, ultimately leading to cell death. The developed methodology could be a powerful tool for understanding cell response mechanisms to environmental stimuli.
Article
Chemistry, Multidisciplinary
Chunyan Wang, Fulin Yang, Ligang Feng
Summary: The bi-functional catalytic ability of an Ir-based catalyst for acidic overall water splitting was achieved by using tellurium nanorods as a support, which resulted from the special electronic coupling and synergism between Ir and Te elements.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Xiaoxue Luo, Xiaoxia Tang, Jingtian Ni, Baijing Wu, Cunpu Li, Minhua Shao, Zidong Wei
Summary: In this study, MnO2 with an asymmetric electronic configuration was designed to discriminate the spin-paired pi electrons of styrene. On the MnO2/(Ru0.3Ti0.7)O-2/Ti bifunctional anode, one of these discriminated pi electrons combined with reactive oxygen species (ROS) such as (OH)-O-center dot, (OOH)-O-center dot, etc., to form benzaldehyde via Grob fragmentation instead of benzoic acid. However, only benzoic acid was obtained from the oxidation of styrene on the anodes MOs/(Ru0.3Ti0.7)O-2/Ti, where MOs are other metal oxides with symmetric electronic configurations.
Article
Chemistry, Applied
Xiaotong Meng, Yuchao Lyu, Junhao Liu, Wenshuo Ma, Yupeng Tian, Jianye Fu, Xinmei Liu
Summary: A chemical resurrection method was developed to resurrect and recycle the industrial spent NiMo/Al2O3 hydrofining catalyst. The treatment with citric acid and ethylene glycol can recover the hydrodesulfurization activity of the resurrected catalyst to a level higher than that over the spent and industrially regenerated catalyst.
Article
Chemistry, Physical
Taoyuan Ouyang, Yaoning Bai, Xu Wang, Xinru Li, Yuwei Yan, Zichen Wang, Xiaodi Jiang, Xiaoming Cai, Jinming Cai, Honglin Tan
Summary: Experimental evidence shows that CuFe2O4 has excellent catalytic performance in the SCR reaction, but its specific reaction mechanism has not been thoroughly explored. Our study investigates the adsorption model of NH3 and the SCR reaction mechanism on CuFe2O4 before and after Zn doping. The results demonstrate that NH3 is chemically adsorbed on the surface and Zn doping provides more reactive sites for NH3 molecules, effectively reducing the energy barrier of the reaction. Additionally, the study evaluates the feasibility of the reaction between adsorbed NO and surface active O atoms. The sulfur resistance is also improved by Zn doping. Our study offers valuable theoretical guidance for the development of ferrite spinel and doping modification.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Applied
Hassnain Abbas Khan, Mohamad Abou-Daher, Ana-Luiza S. de Freitas, Janardhanraj Subburaj, Omar EI Tall, Aamir Farooq
Summary: This work investigates the oxidation of methane, propane and ethylene in the presence of carbon monoxide (CO) and water vapors over Pt and Pd mono and bimetallic catalysts supported on SBA-15. The study finds that Pd exhibits higher activity towards alkanes (methane and propane) at low temperatures, while Pt is more active for ethylene. Optimal alloying compositions have the potential to minimize the decrease in conversion activity in the presence of CO and water vapors.
Article
Materials Science, Ceramics
Min Ji Kang, Dang-Hyok Yoon
Summary: Motivated by the different chromaticity present in the sintered Al2O3 prepared from various same-grade powders, this study examined the probable factor that affects the color by surface chemistry. The results showed that surface hydroxyl ions play a significant role in determining the color of sintered Al2O3, and UV irradiation can alter their amount, leading to a change in color.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Environmental Sciences
Zhuofan Chen, Yanfen Liao, Yin Chen, Xiaoqian Ma
Summary: This study evaluated the performance of different catalysts in removing nitrogen oxides and volatile organic compounds from the flue gas of coal-fired power plants. The mechanisms and intermediates formed during the reaction process were revealed through characterization and computational methods. The findings of this study are of great significance for improving the flue gas treatment technology of coal-fired power plants.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
Miren Agote-Aran, Martin Elsener, Frank W. Schuetze, Christian M. Schilling, Manasa Sridhar, Evangelos Katsaounis, Oliver Kroecher, Davide Ferri
Summary: Understanding the poisoning mechanism in Diesel oxidation catalysts is crucial in preventing long term catalyst deterioration in vehicles. Both impregnation and spraying methods of artificial phosphorus poisoning were studied on a commercial DOC, with spraying resulting in more detrimental poison distribution and decreased NO oxidation performance compared to impregnation. Sequential treatments were conducted to gain deeper insight into the catalyst deactivation mechanism.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Gabriela Grzybek, Kinga Gora-Marek, Piotr Patulski, Magdalena Greluk, Marek Rotko, Grzegorz Slowik, Andrzej Kotarba
Summary: The precise optimization of K loading and dispersion on the Co vertical bar alpha-Al2O3 catalyst plays a key role in improving the efficiency of hydrogen production via ethanol steam reforming process.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Engineering, Chemical
Hiroshi Okamoto, Takanobu Kajino, Hiroaki Yoto, Kazuki Tamai, Yuji Yoshiyama, Saburo Hosokawa, Tsunehiro Tanaka, Takaki Yamada, Teruki Motohashi
Summary: Insights into NOx storage materials are crucial, with the YBaCo4O7+delta oxide showing superior NOx storage and catalytic oxidation capabilities as a potential candidate for the NOx abatement industry.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Physical
Michele Carosso, Eleonora Vottero, Sara Morandi, Maela Manzoli, Davide Ferri, Thibault Fovanna, Riccardo Pellegrini, Andrea Piovano, Elena Groppo
Summary: The decomposition of ethanol over two Pd/Al2O3 catalysts was investigated using transmission FT-IR and ATR-IR spectroscopies. The regularity of Pd particles and initial Pd oxidation state were found to significantly impact the products formed, with ethanol oxidation to acetates being the kinetically favored reaction path. The presence of a solvent also dampened the decarbonylation process due to competition for surface sites.
Article
Engineering, Environmental
Chih-Han Liu, Junjie Chen, Todd J. Toops, Jae-Soon Choi, Cyril Thomas, Michael J. Lance, Eleni A. Kyriakidou
Summary: Novel palladium(Pd)/SiO2(core)@Zr(shell) structured DOCs were developed with improved low-temperature activity and hydrothermal stability for diesel oxidation applications. The catalyst achieved 90% CO and total hydrocarbon conversion at temperatures of 178 and 372 degrees Celsius, respectively.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Masaaki Haneda, Kenji Takamura, Yasuyuki Doi, Nicolas Bion, Laurence Vivier
JOURNAL OF MATERIALS SCIENCE
(2017)
Article
Chemistry, Applied
Yasuyuki Doi, Masaaki Haneda
Article
Chemistry, Multidisciplinary
Teruaki Fuchigami, Ryosuke Kimata, Masaaki Haneda, Ken-ichi Kakimoto
Article
Chemistry, Physical
Masaaki Haneda, Makoto Tanaka, Yasuyuki Doi, Nicolas Bion
MOLECULAR CATALYSIS
(2018)
Article
Chemistry, Multidisciplinary
Bo Huang, Hirokazu Kobayashi, Tomokazu Yamamoto, Takaaki Toriyama, Syo Matsumura, Yoshihide Nishida, Katsutoshi Sato, Katsutoshi Nagaoka, Masaaki Haneda, Wei Xie, Yusuke Nanba, Michihisa Koyama, Fenglong Wang, Shogo Kawaguchi, Yoshiki Kubota, Hiroshi Kitagawa
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Chemistry, Multidisciplinary
Masaaki Haneda, Yuya Katsuragawa, Yuichiro Nakamura, Atsuya Towata
FRONTIERS IN CHEMISTRY
(2018)
Article
Physics, Condensed Matter
Rongguang Gan, Yoshihide Nishida, Masaaki Haneda
Summary: This study investigates the effect of B site element in LaBO3 perovskites on the catalytic performance for the oxidative coupling of methane reaction. LaAlO3, LaGaO3, LaInO3, and LaYbO3 catalysts exhibit higher activity in the formation of C-2 hydrocarbons in the reaction. The study reveals that the formation of CH3·, as the first step in the reaction, is strongly influenced by the B site element.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2022)
Article
Chemistry, Physical
Yoshihide Nishida, Katsutoshi Sato, Chandan Chaudhari, Hiroshi Yamada, Takaaki Toriyama, Tomokazu Yamamoto, Syo Matsumura, Susan Menez Aspera, Hiroshi Nakanishi, Masaaki Haneda, Katsutoshi Nagaoka
Summary: The selective hydrogenation of nitriles to single products under ambient conditions was achieved without heat, pressurization, or long reaction times by bimetalization between palladium (Pd) and platinum (Pt) nanoparticles. The resulting catalyst showed high yield of secondary amines, suggesting potential for efficient and green synthesis methods in various industrial applications.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Daiya Kobayashi, Hirokazu Kobayashi, Kohei Kusada, Tomokazu Yamamoto, Takaaki Toriyama, Syo Matsumura, Shogo Kawaguchi, Yoshiki Kubota, Masaaki Haneda, Susan Menez Aspera, Hiroshi Nakanishi, Shigebumi Arai, Hiroshi Kitagawa
Summary: PtW NPs/Al2O3 is a highly active and selective catalyst for RWGS, exhibiting higher activity at low temperatures compared to Pt/Al2O3. The enhanced activity of PtW NPs comes from alloying Pt with W, which helps resist sintering of Pt NPs and promotes CO2 adsorption and CO desorption on the catalyst. Additionally, PtW NPs/Al2O3 shows high durability and excellent catalytic performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
Shotaro Tada, Norifumi Asakuma, Shiori Ando, Toru Asaka, Yusuke Daiko, Sawao Honda, Masaaki Haneda, Samuel Bernard, Ralf Riedel, Yuji Iwamoto
Summary: This study investigates the H-2 chemisorption properties and possible structural reorientation of Al active sites in amorphous Si-Al-N ceramics. The results indicate that Al incorporation generates micro/mesoporosity and reactive sites, with potential reversible structural changes around the Al nuclei.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
Masaaki Haneda, Yuichiro Nakamura, Tatsuya Yamada, Shigekazu Minami, Naohiro Kato, Katsuya Iwashina, Yoshinori Endo, Yunosuke Nakahara, Kinichi Iwachido
Summary: The study evaluated the light-off performance of engine-aged model three-way catalysts and found a satisfactory correlation between the light-off temperatures under simulated- and real-exhaust gas conditions. It was observed that the quality of the Pd-support oxide interface and the surface state of Pd particles were strongly affected by high-temperature engine ageing. Additionally, Pd particles with a high fraction of corner sites were found to be highly active for three-way catalytic reactions.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Masaaki Haneda, Yusuke Kawaguchi, Atsuya Towata
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
(2017)
Article
Chemistry, Applied
Masaaki Haneda, Mina Todo, Yuichiro Nakamura, Mastomo Hattori
Article
Chemistry, Physical
Masaaki Haneda, Yasutaka Tomida, Teruo Takahashi, Yousuke Azuma, Tomonari Fujimoto
CATALYSIS COMMUNICATIONS
(2017)
Article
Chemistry, Applied
Masakuni Ozawa, Masahiro Takahashi-Morita, Katsutoshi Kobayashi, Masaaki Haneda
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)
