Article
Chemistry, Physical
Lei Li, Zhi-Feng Jiao, Ji-Xiao Zhao, Dan Yao, Xiang Li, Xiang-Yun Guo
Summary: In this work, partially oxidized SiC (SiC-O) was found to enhance the catalytic selectivity for the selective hydrogenation of C=O in CAL when used as the support of Pt. The partially oxidized SiC surface changed the adsorption mode of CAL and facilitated the selective adsorption of C=O in CAL. The cooperative catalysis of metal and SiC was revealed in this study.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Marta Stucchi, Maela Manzoli, Filippo Bossola, Alberto Villa, Laura Prati
Summary: Selective hydrogenation catalysts with low noble metal content were synthesized from two different molybdenum precursors, and the catalytic behavior was influenced by the acidity of the catalysts. Heating treatment of the carbon support before Pt deposition improved catalytic performance by enhancing Pt dispersion and reduction, leading to different selectivities due to varied acid properties.
Article
Chemistry, Physical
Ran Tao, Bing-Qian Shan, Hao-Di Sun, Meng Ding, Qing-Song Xue, Jin-Gang Jiang, Peng Wu, Kun Zhang
Summary: The study used platinum-covered titanium oxide as a catalyst and reconstructed surface states to control the synthesis selectivity of unsaturated alcohols and aldehydes in hydrogenation reactions, achieving high selectivity.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Mengnan Li, Huiyue Xin, Tongyang Song, Chen Zhao, Peng Wu, Xiaohong Li
Summary: By adjusting the particle size of Pt, the TOF and selectivity of Pt/Co0.5Fe0.5Al2O4 catalysts for the selective hydrogenation of cinnamaldehyde were improved. The activation of both C=O and C=C bonds was achieved by stronger interaction between Co0.5Fe0.5Al2O4 and smaller Pt particles.
CATALYSIS COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Ruyi Geng, Huanhuan Jia, Youwei Xie, Dahai Pan, Feng Yu, Binbin Fan
Summary: UiO-66 supported Pt catalysts with different amounts of missing-linker defects (MLDs) were prepared and their catalytic properties were investigated. The Pt catalysts with more MLDs showed higher reaction conversion and selectivity. The preparation methods influenced the location and dispersion of Pt species on UiO-66 supports, and the location of supported Pt species on UiO-66 was the critical factor affecting catalytic performance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Kaiying Wang, Xiaoqing He, Jee-Ching Wang, Xinhua Liang
Summary: Pt-Co bimetallic catalysts with strong interaction and synergetic effects between Pt and Co were used for selective hydrogenation of cinnamaldehyde, achieving high selectivity and conversion. The addition of Co on Pt improved the activity and stability of the catalysts. The obtained catalysts showed excellent stability and reusability.
Article
Chemistry, Physical
Nilda Chasvin, Petr Svenda, Estela Pronsato, Alejandra Diez, Maria Alicia Volpe, Viktor Johanek, Carolina Pistonesi
Summary: The study investigated the adsorption and dissociation of ethanol on Pt/beta-Mo2C for catalytic H-2 production. Results showed that Pt modifies the lattice parameters of beta-Mo2C, affecting the Mo-Mo distances and chemical state of molybdenum and carbon. The presence of Pt increased the catalytic activity of beta-Mo2C for ethanol decomposition, demonstrating a higher production of H-2 at temperatures above 530 K.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Materials Science, Ceramics
Liu Wenwen, Miao Yuxin, Zhang Yifei, Wang Xinyu, Lan Yuting, Zhao Zhen
Summary: This study focused on designing and fabricating highly efficient and stable Pt nano-catalysts for improving the C=O hydrogenation selectivity of cinnamaldehyde. The results demonstrated that the morphology of different LDH supports significantly influenced the structure and properties of Pt/LDH catalysts, with interaction between LDH nanosheets and Pt facilitating dispersion and stabilization of Pt nanoparticles, and the alkaline sites and surface hydroxyl groups in LDH support enhancing catalytic activity and stability. Selectivity of cinnamon alcohol and conversion of cinnamon aldehyde were high after reaction under specific conditions, and the Pt/LDH catalyst showed excellent stability after repeated cycle tests.
JOURNAL OF INORGANIC MATERIALS
(2021)
Article
Chemistry, Physical
Zhexi Gao, Luoyu Cai, Chenglin Miao, Tianli Hui, Qian Wang, Dianqing Li, Junting Feng
Summary: In this study, a Pt/CoAl-LDHs catalyst was prepared for the hydrogenation of cinnamaldehyde (CAL) to cinnamyl alcohol (COL). The catalyst showed high selectivity and conversion, attributed to the strengthened metal-support interactions and electron-rich Pt delta- sites provided by the Co2+-O2--Al3+ structure in CoAl-LDHs.
Article
Energy & Fuels
Hao Chen, Haishuai Cui, Yang Lv, Pingle Liu, Fang Hao, Wei Xiong, He'an Luo
Summary: Cu/ZnO/ZrO2 catalysts with different ZnO morphologies were prepared and used for CO2 hydrogenation to methanol. The catalyst with flower-like ZnO morphology showed the highest catalytic performance and possess the most oxygen vacancies. The experimental results and DFT calculations suggest that oxygen vacancies play a crucial role in promoting the reaction and reducing the energy barriers.
Article
Chemistry, Applied
Xia Gong, Quanquan Shi, Xinyu Zhang, Jinmei Li, Guichen Ping, Hui Xu, Hongjing Ding, Gao Li
Summary: By introducing Fe species, the catalytic performance of PtFex/CeO2 catalysts in the selective hydrogenation of cinnamaldehyde (CAL) is improved, showing increased CAL conversion and selectivity towards cinnamyl alcohol (COL). XPS results indicate that the electron transfer from Fe to Pt promotes CAL adsorption, leading to enhanced CAL conversion. The interaction between PtFe and CeO2 support improves the COL selectivity by enabling CAL adsorption via an interaction of the C=O group with surface oxygen defect sites.
JOURNAL OF RARE EARTHS
(2023)
Article
Engineering, Environmental
Le Yu, Junyan Zhou, Zhaoyi Xu, Shourong Zheng
Summary: The newly designed Pt@NCMK-3 catalyst shows high activity and stability in eliminating Cr(VI) pollution simultaneously at near neutral pH, with superior breakthrough performance under experimental conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Ying Zhang, Jinfang Su, Junnan Chen, Chengshan Dai, Bingsen Zhang
Summary: In this study, a series of PtxFey-Al2O3 bimetallic catalysts were prepared, and the introduction of Fe significantly modified the properties of Pt, enhancing the selectivity of C=O hydrogenation. Among them, Pt3Fe-Al2O3 exhibited the best catalytic performance, with excellent reusability and relatively stable structure.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Physical
Yi Tang, Hongkun Li, Kuncheng Cui, Yongde Xia, Guoyuan Yuan, Jian Feng, Wei Xiong
Summary: The chemoselective hydrogenation of cinnamaldehyde to cinnamyl alcohol was accelerated by a Pt nanocatalyst supported on an amorphous coordination polymer. The prepared 1.0wt.%Pt/Co-Asp nanocatalyst exhibited excellent catalytic activity and selectivity, which can be attributed to the synergistic effect between Pt nanoparticles and the amorphous Co-Asp polymer.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Chengshan Dai, Ying Zhang, Junnan Chen, Xia Zhong, Liyun Zhang, Bingsen Zhang
Summary: This study investigates the effect of support morphology on the catalytic performance of selective hydrogenation reactions. The results show that the properties of metal nanoparticles can be modified by the nature of the support, leading to improved catalytic activity and stability.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Jose J. Delgado-Marin, Alejandra Rendon-Patino, Vijay Kumar Velisoju, Gadde Sathish Kumar, Naydu Zambrano, Magnus Rueping, Jorge Gascon, Pedro Castano, Javier Narciso, Enrique V. Ramos-Fernandez
Summary: We demonstrate that ZIFs used as catalysts for CO2 insertion suffer from irreversible degradation by leaching, leading to decreased stability and catalytic activity. Additional treatments are necessary to improve their stability.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Physical
Il Son Khan, Luis Garzon-Tovar, Toni Grell, Genrikh Shterk, Jose Cerrillo, Tuiana Shoinkhorova, Juan C. Navarro, Faisal Alahmadi, Angel Sousa, Anastasiya Bavykina, Daria Poloneeva, Mustafa Caglayan, Stephanie Terruzzi, Javier Ruiz-Martinez, Nikolay Kosinov, Valentina Colombo, Jorge Gascon
Summary: The use of metal-organic frameworks (MOFs) as precursors for heterogeneous catalysts has attracted much attention. Steaming during the controlled decomposition of MOFs leads to the formation of smaller, well-dispersed metal nanoparticles, resulting in more efficient catalysts. This study demonstrates the benefits of steam addition, including improved phase composition control and catalyst activity, for CO2 hydrogenation.
Article
Chemistry, Physical
Pierfrancesco Ticali, Sara Morandi, Genrikh Shterk, Samy Ould-Chikh, Adrian Ramirez, Jorge Gascon, Sang-Ho Chung, Javier Ruiz-Martinez, Silvia Bordiga
Summary: The present work investigates the application of a previously studied PdZn/ZrO2+SAPO-34 bifunctional catalyst for CO2 conversion. High activity and selectivity for propane were observed. The results obtained from NAP-XPS measurements and CO adsorption at liquid-nitrogen temperature (LNT) followed by FT-IR spectroscopy provide insights into the behavior of the catalyst. Fresh, used, and regenerated states of the catalyst were characterized, revealing interactions between different components and the formation of new species in the catalyst framework.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Multidisciplinary
Qingpeng Cheng, Guanna Li, Xueli Yao, Lirong Zheng, Junhu Wang, Abdul-Hamid Emwas, Pedro Castano, Javier Ruiz-Martinez, Yu Han
Summary: This study presents a facile synthesis strategy for incorporating more Fe into the zeolite framework. The Fe-ZSM-5 catalyst prepared using this method has three times as many active sites as conventional Fe-ZSM-5, leading to a record-high C-1 oxygenate yield in the selective oxidation of CH4.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Enrique V. V. Ramos-Fernandez, Javier Narciso
Summary: SiC is one of the most important ceramics due to its excellent properties and wide range of applications. The traditional Acheson method for industrial production has remained unchanged for 125 years. However, laboratory synthesis methods cannot be directly extrapolated to the industrial level. This study compares the results of SiC synthesis at both the industrial and laboratory level, highlighting the importance of analyzing coke composition and the presence of certain metals in the ashes.
Article
Chemistry, Multidisciplinary
Ana Cristina Perez-Sequera, Manuel Antonio Diaz-Perez, Mayra Anabel Lara Angulo, Juan P. Holgado, Juan Carlos Serrano-Ruiz
Summary: A simple and scalable method was used to obtain heterogeneous indium nanoparticles and carbon-supported indium nanoparticles under mild conditions. Physicochemical characterization revealed different morphologies for the In nanoparticles. The best catalyst exhibited high formate Faradaic efficiency and stable current density, with the presence of oxidized In species potentially contributing to improved performance.
Review
Chemistry, Physical
Leidy Figueroa-Quintero, David Villalgordo-Hernandez, Jose J. Delgado-Marin, Javier Narciso, Vijay Kumar Velisoju, Pedro Castano, Jorge Gascon, Enrique V. Ramos-Fernandez
Summary: Metal-organic frameworks (MOFs) are porous hybrid materials with potential applications in catalysis, adsorption, drug delivery, mixed matrix membranes, and stabilization of porous liquids. While there has been considerable focus on functionalizing the inner surface of MOF crystals, methods to selectively functionalize the outer crystal surface are less developed. This article provides an overview of different types of post-synthetic modifications and their applications in various fields.
Article
Chemistry, Multidisciplinary
Rushana Khairova, Sarah Komaty, Alla Dikhtiarenko, Jose Luis Cerrillo, Sudheesh Kumar Veeranmaril, Selvedin Telalovic, Antonio Aguilar Tapia, Jean-Louis Hazemann, Javier Ruiz-Martinez, Jorge Gascon
Summary: Metal encapsulation in zeolitic materials through one-pot hydrothermal synthesis is an attractive technique to prepare zeolites with high metal dispersion. Metallosiloxanes are used as an alternative metal precursor, leading to quantitative metal loading and high dispersion. Fe-MFI zeolites synthesized using this method exhibit high catalytic activity in NH3-mediated selective catalytic reduction (SCR) of NOx.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Edgar S. Duran-Uribe, Antonio Sepulveda-Escribano, Enrique V. Ramos-Fernandez
Summary: Transition metal phosphides have attracted great interest as catalysts for hydrogenation reactions. In this study, cobalt phosphide nanoparticles supported on carbon were synthesized using microwave assistance and applied in the hydrogenation of 1-chloro-4-nitrobenzene. The catalytic activity was found to depend on the reduction temperature, with the phosphorus-rich cobalt phosphide obtained at low temperatures exhibiting the highest activity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Stefan Adrian F. Nastase, Yiru Ye, Teng Li, Sang -Ho Chung, Javier Ruiz-Martinez, Abhishek Dutta Chowdhury, Luigi Cavallo
Summary: Zeolites are widely used and researched in various reaction processes. Understanding the reaction mechanisms involved has been a long-term challenge, but computational simulations analyzing 13C chemical shifts of different compounds have proven useful.
JOURNAL OF CATALYSIS
(2023)
Article
Biochemistry & Molecular Biology
Valentina Balloi, Manuel Antonio Diaz-Perez, Mayra Anabel Lara-Angulo, David Villalgordo-Hernandez, Javier Narciso, Enrique V. Ramos-Fernandez, Juan Carlos Serrano-Ruiz
Summary: For the first time, four different Zeolite Imidazolate Frameworks are presented as catalysts for the formose reaction in liquid phase, and their performance is compared with that of the typical homogeneous catalyst (calcium hydroxide). The research finds that the porous structure and mild basicity of these solids make them suitable for obtaining enhanced selectivity at 30% formaldehyde conversion. However, most MOFs tested show low structural stability under reaction conditions, indicating a need to search for new MOF families with higher robustness.
Article
Green & Sustainable Science & Technology
Wei Jin, Jesus Gandara-Loe, Laura Pastor-Perez, Juan J. Villora-Pico, Antonio Sepulveda-Escribano, Roberto Rinaldi, Tomas Ramirez Reina
Summary: This study proposes an integrated approach combining aqueous phase reforming (APR) and hydrodeoxygenation (HDO) for the hydrotreatment of guaiacol, a model compound representing lignin-derived phenols in pyrolysis bio-oils. The study explores the effect of metal species, Pt-promoting effect on Ni-Pt catalyst supported on activated carbon (AC), and the choice of hydrogen source (methanol or glycerol) on the conversion of guaiacol. The findings highlight the significant improvement in guaiacol conversion with bimetallic Ni-Pt/AC catalysts using methanol as the hydrogen source, and the importance of hydrogen source selection for catalyst performance and stability.
Article
Chemistry, Physical
Teng Li, Sang-Ho Chung, Stefan Nastase, Adrian Galilea, Yan Wang, Ildar Mukhambetov, Moussa Zaarour, Juan Carlos Navarro de Miguel, Jurjen Cazemier, Abhay Dokania, Liliana Panarone, Jorge Gascon, Luigi Cavallo, Javier Ruiz-Martinez
Summary: In this study, two H-ZSM-5 zeolites with different aluminum distributions were compared, and it was found that aluminum enrichment closer to the surface leads to more paired acid sites and enhanced catalytic activity. Furthermore, this aluminum distribution accelerates cascade reactions to produce aromatics and improves their diffusion out of the zeolite. By exploiting this feature, hollow zeolites were successfully fabricated, combining optimized active sites and improved diffusion and confinement properties to achieve the highest capacity for aromatic production.
Article
Chemistry, Physical
Mustafa Caglayan, Abdallah Nassereddine, Stefan-Adrian F. Nastase, Antonio Aguilar-Tapia, Alla Dikhtiarenko, Sang-Ho Chung, Genrikh Shterk, Tuiana Shoinkhorova, Jean-Louis Hazemann, Javier Ruiz-Martinez, Luigi Cavallo, Samy Ould-Chikh, Jorge Gascon
Summary: Tungsten is a promising metal with higher thermal stability for replacing molybdenum in methane dehydroaromatization (MDA) catalysis. However, the MDA activity of W-ZSM-5 catalysts is lower than their Mo counterpart. In order to understand the differences in catalytic activity, thorough investigations are conducted on the dispersion and distribution of W sites on the zeolite.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Rushana Khairova, Sarah Komaty, Alla Dikhtiarenko, Jose Luis Cerrillo, Sudheesh Kumar Veeranmaril, Selvedin Telalovic, Antonio Aguilar Tapia, Jean-Louis Hazemann, Javier Ruiz-Martinez, Jorge Gascon
Summary: Encapsulating metal in zeolitic materials through one-pot hydrothermal synthesis is an attractive technique to prepare zeolites with high metal dispersion. This study introduces the use of metallosiloxanes as an alternative metal precursor and demonstrates their effectiveness in achieving quantitative metal loading and high dispersion. Fe-MFI zeolites obtained through this method exhibit high catalytic activity and good tolerance in the NH3-mediated SCR of NOx.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
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)
