Article
Multidisciplinary Sciences
Huan Yan, Kun He, Izabela A. Samek, Dian Jing, Macy G. Nanda, Peter C. Stair, Justin M. Notestein
Summary: The study demonstrated that growing In2O3 over Pt/Al2O3 using atomic layer deposition results in a nanostructure that kinetically couples domains through surface hydrogen atom transfer, improving the selective oxidative dehydrogenation of propane. In contrast, other nanostructures, such as Pt on In2O3 or Pt mixed with In2O3, were unable to organize the reactions effectively, resulting in more propane combustion.
Article
Chemistry, Applied
Xiaojiao Gao, Zehua Jin, Ruisheng Hu, Jia'nan Hu, Yaqin Bai, Pan Wang, Jie Zhang, Chunxiao Zhao
Summary: Ventilation air methane is a valuable resource with a massive reserve, but most of it is discharged into the air. The catalytic performance of CeO2/La2CoFeO6 is better than other samples, showing lower light-off temperature and complete combustion temperature.
JOURNAL OF RARE EARTHS
(2021)
Article
Chemistry, Multidisciplinary
Qian Zhang, Xunzhu Jiang, Yangyang Li, Yuanlong Tan, Qike Jiang, Xiaoyan Liu, Botao Qiao
Summary: Ni single atoms supported on calcium aluminate are efficient catalysts for propane oxidative dehydrogenation, exhibiting higher propylene selectivity and yield, as well as good stability.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Weilu Wang, Xudong Gong, Fang Wang, Xinyi Wei, Yanliu Dang, Yun Wu, Xianming Zhang
Summary: Ce-doped LaBO3 and its incorporation with 3d transition metals have shown great potential in eliminating propane. The addition of transition metals promotes the density of oxygen vacancies, enhancing the reduction and acidity of the material. This leads to a high conversion rate of propane.
Article
Chemistry, Physical
Jie Liu, Yong Liu, Hongchao Liu, Yi Fu, Zhiyang Chen, Wenliang Zhu
Summary: ZnO-based catalysts, especially supported on silicalite-1, show excellent performance in the PDH reaction with high propane yield and propylene selectivity, attributed to the interaction between ZnO species and silanol nests of the support. This study may pave the way for the development of highly efficient PDH catalysts.
Article
Environmental Sciences
Muhan Jia, Yan Fan, Zhirong Sun, Xiang Hu
Summary: In this study, a sol-gel method was used to prepare A-and B-site doped perovskite La0.5Sr0.5Co0.8Ni0.2O3 (LSCN), supported by ZrO2, which maintained high catalytic activity and inhibited the leaching of toxic Co ions. The ZrO2@La0.5Sr0.5Co0.8Ni0.2O3 (Z@LSCN82)/PMS system showed almost complete degradation of SMX in 30 minutes with a low leaching amount of Co ions. Various active species were present in the system, with SO4•− playing a major role, and the catalyst had high efficiency for SMX degradation in a wide pH range. The Z@LSCN82/PMS system showed great potential for practical wastewater treatment.
Article
Chemistry, Physical
Jian Wang, Min-Li Zhu, Yong-Hong Song, Zhao-Tie Liu, Li Wang, Zhong-Wen Liu
Summary: In this study, the catalytic performance of CrOx catalyst dispersed on dealuminated b zeolite was investigated using the oxidative dehydrogenation of propane with carbon dioxide as a probe reaction. The results revealed that the dispersion of Cr species and the content of initial highly-dispersed Cr6+ oxides played a crucial role in the activity of the catalyst. The researchers discovered that the oxygen from terminal Cr = O bonds in initial Cr6+ oxides reacted with propane molecules, generating coordinatively unsaturated Cr3+ oxides as active sites for the redox cycles of CO2-ODP.
JOURNAL OF CATALYSIS
(2022)
Article
Energy & Fuels
Medhat A. Nemitallah, Md Azazul Haque, Ahmed Abdelhafez, Syed A. M. Said, Mohamed A. Habib
Summary: The study found that reaction rates increase with the increase of equivalence ratio (phi) and oxygen fraction (OF) in premixed CO2-diluted oxy-propane flames. Flames with the same adiabatic flame temperature showed similar macro- and flowfield structures. As the flame temperature increases, the flame becomes more compact with higher Damkohler number.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Thermodynamics
Ran Sui, John Mantzaras, Zirui Liu, Chung K. Law
Summary: The heat release rates of fuel-lean propane/air mixtures over a rhodium wire catalyst were measured and simulated, and a full catalytic reaction mechanism was developed. The mechanism accurately describes the oxidation and ignition processes of propane on the rhodium catalyst, as validated by experiments and simulations.
COMBUSTION AND FLAME
(2022)
Article
Chemistry, Applied
Jeong-Chul Kim, John Lee, Seung Won Han, Hongjun Park, Hanyoung Park, Jeong Young Park, Ryong Ryoo
Summary: Investigated the transformation of PtY/MZ catalyst from powder form to industrial pellets. Addition of 20 wt% of pseudo-boehmite as a binder resulted in the highest mechanical strength and catalytic activity. Demonstrated the use of other non-acidic binders.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Materials Science, Ceramics
Froud Moradkhani, Amirhossein Shahbazi Kootenaei, Sarah Maghsoodi, Masoomeh Mirzaei, Alireza Azimi
Summary: Lanthanide perovskite oxides have gained attention due to their strong chemical stability and adjustable composition. La2CoMnO6 double perovskite oxide catalysts and derived materials La2-xCoMnO6 (x = 0.02, 0.05, 0.10, 0.15) were synthesized using a simple sol-gel method and their catalytic performance in propane combustion was studied. Nonstoichiometric samples showed different activity and stability compared to stoichiometric double perovskite. Among the samples, La2-0.05CoMnO6 showed the best performance in propane catalytic combustion. Propane achieved 90% conversion at 423 ℃ on this catalyst, which also exhibited better stability than stoichiometric perovskite. Various techniques such as XPS, XRD, ICP, H-2-TPR, O-2-TPD, and FTIR were used to characterize the samples and it was found that better reducibility and increased oxygen vacancy content contributed to improved propane degradation on the catalyst, which was related to the introduction of lanthanum ion deficiency in La2CoMnO6 samples.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Hamidreza Roozbahani, Sarah Maghsoodi, Behrouz Raei, Amirhossein Shahbazi Kootenaei, Zoha Azizi
Summary: La2MMnO6 (M=Co, Ni) dual perovskite oxides synthesized by sol-gel and gel-combustion methods exhibited good catalytic performance for the total oxidation of propane. Catalysts synthesized by the gel-combustion method showed higher specific surface area, oxygen capacity, reducibility, and oxygen mobility compared to those synthesized by the sol-gel method.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Inorganic & Nuclear
Kunhong Jiang, Zhenyu Li, Zehao Zhang, Jiefei Li, Xingyue Qi, Jian Zhou, Xiaojing Wang, Hang Wei, Haibin Chu
Summary: A CeMnO3 perovskite-supported Au nanoparticle catalyst enhances the selective oxidation of glycerol to glyceric acid. The strong interaction between CeMnO3 and Au facilitates electron transfer and stabilizes Au nanoparticles, resulting in improved catalytic activity and stability. The catalyst also promotes the adsorption of the glyceraldehyde intermediate, leading to further oxidation into glyceric acid. The study presents a promising strategy for the rational design of high-performance glycerol oxidation catalysts.
INORGANIC CHEMISTRY
(2023)
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.
Article
Engineering, Environmental
Zhengfeng Gu, Daiwei Liu, Mengnan Yu, Teng Bao, Xiaowei Liu, Ling Zhang, Haitao Ding, Zhimin Yu, Chengxun Deng
Summary: This study successfully synthesized Ni-Cu-loaded TiO2 catalysts with excellent catalytic activity and stability by controlling the molar ratio of Ni/Cu and the mass proportion of the TiO2 support. The 5Ni-Cu/TiO2 catalyst exhibited improved pore sizes and specific surface area, higher concentrations of oxygen vacancies and adsorbed oxygen species, and good redox properties.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Chanmin Lee, Joo-Il Park, Yong-Gun Shul, Hisahiro Einaga, Yasutake Teraoka
APPLIED CATALYSIS B-ENVIRONMENTAL
(2015)
Article
Chemistry, Applied
Hisahiro Einaga, Nanako Maeda, Shintaro Yamamoto, Yasutake Teraoka
Article
Chemistry, Applied
Tomoki Uchiyama, Reiko Karita, Maiko Nishibori, Hisahiro Einaga, Yasutake Teraoka
Article
Chemistry, Applied
Hisahiro Einaga, Shintaro Yamamoto, Nanako Maeda, Yasutake Teraoka
Article
Engineering, Environmental
Hisahiro Einaga, Junya Tokura, Yasutake Teraoka, Kazuhide Ito
CHEMICAL ENGINEERING JOURNAL
(2015)
Article
Chemistry, Applied
Kazuhiro Uemura, Srinivas Appari, Shinji Kudo, Jun-ichiro Hayashi, Hisahiro Einaga, Koyo Norinaga
FUEL PROCESSING TECHNOLOGY
(2015)
Article
Chemistry, Physical
Hisahiro Einaga, Nanako Maeda, Yusuke Nagai
CATALYSIS SCIENCE & TECHNOLOGY
(2015)
Article
Chemistry, Physical
Masashi Hattori, Hisahiro Einaga, Takeshi Daio, Masaharu Tsuji
JOURNAL OF MATERIALS CHEMISTRY A
(2015)
Article
Chemistry, Physical
Hisahiro Einaga, Narihiro Urahama, Akihiro Tou, Yasutake Teraoka
Article
Chemistry, Applied
A. Tou, H. Einaga, Y. Teraoka
Article
Chemistry, Physical
Hisahiro Einaga, Junki Kawarada, Kana Kimura, Yasutake Teraoka
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2014)
Article
Chemistry, Physical
Hisahiro Einaga, Yasutake Teraoka, Atsushi Ogata
JOURNAL OF CATALYSIS
(2013)
Article
Chemistry, Physical
Hisahiro Einaga, Akihiro Kiya, Satoru Yoshioka, Yasutake Teraoka
CATALYSIS SCIENCE & TECHNOLOGY
(2014)
Article
Materials Science, Ceramics
Tomoki Uchiyama, Maiko Nishibori, Hisahiro Einaga, Yasutake Teraoka
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2015)
Article
Chemistry, Physical
Akihiro Tou, Hisahiro Einaga, Yasutake Teraoka
REACTION KINETICS MECHANISMS AND CATALYSIS
(2015)
Article
Chemistry, Applied
Qingyuan Zheng, Jack H. Williams, Scott Elgersma, Mick D. Mantle, Andrew J. Sederman, G. Leendert Bezemer, Constant M. Guedon, Lynn F. Gladden
Summary: In this study, a pilot-scale fixed-bed reactor compatible with NMR/MRI was developed for Fischer-Tropsch synthesis. Multiple magnetic resonance techniques were applied to quantitatively characterize different product species within catalyst pellets, providing valuable information for catalyst and reactor optimization.
Article
Chemistry, Applied
Lisa Ramisch, Sebastian Pfaff, Sabrina M. Gericke, Edvin Lundgren, Johan Zetterberg
Summary: We present a combination of optical operando techniques that allow simultaneous measurement of adsorbed species on catalyst surfaces, monitoring of surface oxide formation, and imaging of the gas phase above the catalyst surface. The experimental setup was validated by studying CO oxidation on Pd(100) at different pressures, revealing the effects of pressure on the heterogeneous catalytic reaction.
Article
Chemistry, Applied
Marta Paniagua, Gabriel Morales, Juan A. Melero, Daniel Garcia-Salgado
Summary: The influence of common impurities in levulinic acid on the catalytic performance of different acid catalysts for bio-jet fuel production was studied. It was found that furfural had the greatest detrimental effect on catalyst performance, while propyl-sulfonic acid-modified SBA-15 and sulfonic acid resin Amberlyst-70 showed good regeneration ability.
Article
Chemistry, Applied
Jesus Tapiador, Pedro Leo, Guillermo Calleja, Gisela Orcajo
Summary: This study presents a new MOF material, Zn-URJC-13, with acid and basic sites, permanent porosity, and high affinity to CO2 molecules. The Zn-URJC-13 catalyst exhibits efficient performance in CO2 cycloaddition reactions and can be reused multiple times.
Article
Chemistry, Applied
Dan Zhao, Vita A. Kondratenko, Dmitry E. Doronkin, Shanlei Han, Jan-Dierk Grunwaldt, Uwe Rodemerck, David Linke, Evgenii V. Kondratenko
Summary: This study demonstrates the potential of cheap and commercially available Zr or Ti-based supports and ZnO to serve as active and selective catalysts for propane dehydrogenation (PDH). The catalytically active species formed in situ under PDH conditions consist of isolated ZnOx. ZnOx on the surface of LaZrOx shows the highest rate of propene formation.
Article
Chemistry, Applied
Hanbyeol Kim, Jung Rae Kim, Young-Kwon Park, Jeong-Myeong Ha, Jungho Jae
Summary: In this study, metal phosphates were used as catalysts for biomass conversion to produce sustainable aromatics through DielsAlder cycloaddition reactions. The effects of synthesis method, activation method, and P/Ti molar ratio on the structure and acid properties of titanium phosphate catalysts were systematically studied. The mesoporous titanium phosphate catalyst synthesized by hydrothermal method at 180℃ for 12 h followed by ethanol refluxing at 60℃ for 24 h at a molar P/Ti ratio of 1 showed the highest surface area and acid site density.
Article
Chemistry, Applied
Yasin Khani, Sumin Pyo, Kwang-Eun Jeong, Chul-Ung Kim, Moonis Ali Khan, Byong-Hun Jeon, Kun-Yi Andrew Lin, Siyoung Q. Choi, Young-Kwon Park
Summary: A protonated form of Zeolite Socony Mobil-5 (H-ZSM-5) catalyst was synthesized through a hydrothermal method using different sources of silica. The effect of loading the catalyst with yttrium, samarium, and gadolinium on the acidic properties was investigated. Among the metal-loaded catalysts, the Sm/LHZ catalyst showed the best performance in the methanol to propylene conversion due to its high amount of weak and intermediate acid sites, while the Gd-LHZ catalyst increased the selectivity towards ethane and propane.
Article
Chemistry, Applied
Michael Franc, Ivana Cisarova, Jan Vesely
Summary: The present study investigates an enantioselective cyclization of enals with imidazolone derivatives catalyzed by a combination of achiral Pd(0) complex and chiral secondary amine. Corresponding spirocyclic imidazolones were produced in high yields with moderate diastereoselectivity and excellent enantioselectivity. The developed co-operative catalytic methodology provides a highly substituted spirocyclic scaffold with four stereogenic centers under mild conditions.
Article
Chemistry, Applied
Mauro Alvarez, Jennifer Cueto, David P. Serrano, Pablo Marin, Salvador Ordonez
Summary: This study focuses on improving the formulation and preparation methods of catalysts for the production of dimethyl carbonate. By using suitable catalyst preparation methods and copper salt precursors, the researchers successfully produced catalysts with optimal performance for dimethyl carbonate formation.
Article
Chemistry, Applied
Claudia J. Keijzer, Luc C. J. Smulders, Dennie Wezendonk, Jan Willem de Rijk, Petra E. de Jongh
Summary: This study investigates the catalytic behavior of alpha-alumina supported silver catalysts in the presence of chloride. It is found that the particle size of silver can affect the selectivity of the catalyst, but different strategies lead to different results. In this size range, the selectivity of ethylene oxide is correlated to the Ag : Al2O3 surface ratio.
Article
Chemistry, Applied
Takeshi Aihara, Wataru Aoki, Michikazu Hara, Keigo Kamata
Summary: The development of acid-base bifunctional catalysts is important for promoting specific chemical transformations. In this study, Ti-based perovskite oxides were synthesized and used as catalysts for two C-C bond-forming reactions (cyanosilylation and Knoevenagel condensation). The highly pure SrTiO3 nanoparticles with a high specific surface area exhibited the highest catalytic performance, and could be easily recovered and reused.
Article
Chemistry, Applied
Olga Gorlova, Petra Pribylova, Eliska Vyskocilova, Katerina Peroutkova, Jan Kohout, Iva Paterova
Summary: This study investigates the Baeyer-Villiger oxidation of beta-cyclocitral using tin-modified mixed oxides as catalysts. The optimal reaction conditions and the effects of various factors on the reaction course and selectivity were determined. The results show that tin-modified mixed oxides exhibit high activity and selectivity in the oxidation reaction.
Article
Chemistry, Applied
M. I. Avila, M. M. Alonso-Doncel, L. Briones, G. Gomez-Pozuelo, J. M. Escola, D. P. Serrano, A. Peral, J. A. Botas
Summary: The catalytic fast pyrolysis of lignin using ion-exchanged zeolite catalysts showed significant improvements in bio-oil quality and the production of aromatic hydrocarbons and oxygenated compounds.
Article
Chemistry, Applied
Enrico Catizzone, Giorgia Ferrarelli, Paolo Bruno, Girolamo Giordano, Massimo Migliori
Summary: The acid-catalysed alcohol conversion reaction is a promising route for de-fossilization strategies. Research on pure alcohol conversion and simultaneous dehydration of mixed alcohols have shown different product compositions, with the type and distribution of acid sites affecting the reaction mechanism.
Article
Chemistry, Applied
Alireza Ranjbari, Juho Kim, Jihee Yu, Jiyun Kim, Mireu Park, Nayoung Kim, Kristof Demeestere, Philippe M. Heynderickx
Summary: This study investigated a novel kinetic model for the adsorption and photocatalytic degradation of methyl orange using commercial ZnO and reduced ZnO photocatalysts. The results provided new insights into the interaction of catalysts with molecules of different charges and compared with a previous study on methylene blue. The presence of oxygen vacancies in ZnO and their effects on adsorption and photocatalytic degradation were analyzed, and the photocatalytic degradation rate of reduced ZnO was found to increase significantly.
