Review
Chemistry, Physical
Augustin Nouaille, Jan Lorkowski, Xavier Pannecoucke, Marc Mauduit, Thomas Poisson, Samuel Couve-Bonnaire
Summary: This article presents a review of the challenges in using fluoroalkenes in ring-closing metathesis and cross-metathesis, highlighting the major developments in this field in recent years.
Article
Chemistry, Physical
Felix Ziegler, Hamzeh Kraus, Mathis J. Benedikter, Dongren Wang, Johanna R. Bruckner, Michal Nowakowski, Kilian Weisser, Helena Solodenko, Guido Schmitz, Matthias Bauer, Niels Hansen, Michael R. Buchmeiser
Summary: By utilizing cationic molybdenum imido alkylidene N-heterocyclic carbene (NHC) complexes confined in tailored ordered mesoporous silica, high macrocyclization selectivities up to 98% and high substrate concentrations up to 0.1 M can be achieved. Molecular dynamics simulations reveal that high conversions are a result of the proximity between the surface-bound catalyst and surface-located substrates, leading to increased reaction efficiency.
Article
Chemistry, Physical
David Skoda, Ran Zhu, Barbora Hanulikova, Ales Styskalik, Vit Vykoukal, Petr Machac, Lucie Simonikova, Ivo Kuritka, Claude Poleunis, Damien P. Debecker, Yuriy Roman-Leshkov
Summary: In this study, we demonstrate that amorphous and porous molybdenum silicate microspheres are highly active catalysts for heterogeneous propylene metathesis. These microspheres were synthesized via a nonaqueous condensation method and showed significantly higher catalytic activity compared to conventional silica-supported catalysts.
Article
Polymer Science
Yisong Wang, Zepeng Zhang, Yan Xu
Summary: The regulation of cis-trans configuration is crucial for understanding the relationship between structure and properties of polymers. A new method of acyclic diene metathesis (ADMET) using readily available terminal acyclic dienes and a specific catalyst has achieved high selectivity in producing cis-configured polyalkenamers. This method is also compatible with triene monomers embedded with trans-olefins, offering a convenient tool for constructing alternative cis-trans configurations in polyalkenamers.
Editorial Material
Chemistry, Multidisciplinary
Leah N. N. Appelhans
Summary: Plasmonic heating by nanoparticles has been utilized to enhance various chemical reactions. Now, thermoplasmonic activation has been extended to latent ruthenium catalysts for olefin metathesis triggered by visible and infrared light.
Article
Chemistry, Physical
Alfred Worrad, Sagar Sourav, Stavros Caratzoulas, Dionisios G. Vlachos
Summary: The structure of supported MoOx/Al2O3 catalysts was investigated using AIMD and DFT. Phase diagrams were computed to understand the hydroxylation coverage under different conditions. The results showed that DFT is a cost-effective method for computing vibrational frequencies under certain hydrated conditions, but is susceptible to errors under dehydrated conditions. The power spectra of individual hydroxyls revealed a strong relationship between OH stretching frequencies and the surrounding coordination environment and MoOx anchoring location.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Koushani Kundu, Janis V. Musso, Mathis J. Benedikter, Wolfgang Frey, Katrin Gugeler, Johannes Kaestner, Michael R. Buchmeiser
Summary: Neutral and cationic Mo imido alkylidene CAAC complexes were synthesized and their synthetic peculiarities were investigated. Due to the Σ-donor/π-acceptor characteristics of CAACs, stabilizing donor ligands like nitriles were not required for these complexes. Selected complexes were characterized by single-crystal X-ray analysis. All cationic complexes showed higher activity compared to analogous NHC complexes in olefin metathesis reactions, with turnover numbers (TONs) up to 9500 even at room temperature. Some Mo imido alkylidene CAAC complexes exhibited tolerance towards functional groups like thioethers and sulfonamides.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Adrian Sytniczuk, Mariusz Milewski, Michal Dabrowski, Karol Grela, Anna Kajetanowicz
Summary: A set of macrocyclic unsaturated musk compounds were obtained through a high-concentration RCM process, achieved by forming oligomers and then undergoing backbiting metathesis reaction. The process exhibited high selectivity and yielded pure macrocyclic musk products. The reaction conditions were user-friendly and environmentally friendly, using commercially available catalyst and bio-sourced oleic acid substrates.
Article
Polymer Science
Janis V. Musso, Paul Gebel, Vincent Gramm, Wolfgang Frey, Michael R. Buchmeiser
Summary: A system for visible-light-controlled ring-opening metathesis polymerization (ROMP) was developed by combining thermally latent group 6 olefin metathesis initiators with a photoredox catalyst. This system can be applied to two-dimensional (2D) photolithography, and it exhibits high activity and stability without the need for thermal or UV post-curing.
Article
Chemistry, Multidisciplinary
Yucheng Mu, Felix W. W. Hartrampf, Elsie C. Yu, Katherine E. Lounsbury, Richard R. Schrock, Filippo Romiti, Amir H. Hoveyda
Summary: This study introduces a new method for synthesizing trisubstituted macrocyclic olefins, which can produce stereoisomers and overcome unexpected difficulties. The effectiveness of the method is demonstrated through two examples.
Article
Chemistry, Multidisciplinary
Can Qin, Tobias Koengeter, Fengyue Zhao, Yucheng Mu, Fang Liu, K. N. Houk, Amir H. Hoveyda
Summary: This study introduces catalytic cross-metathesis reactions that can produce trisubstituted alkenes with high stereoisomeric purity. The reactions can generate Z-trisubstituted alpha-methyl, alpha,beta-unsaturated, alkyl and aryl esters, thiol esters, and acid fluorides. The use of specific Mo catalysts and commercially available paraffin tablets containing a Mo complex achieves efficient transformations.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Kosuke Ono, Satoru Onodera, Hidetoshi Kawai
Summary: A novel synthetic strategy using boroxine formation for large macrocyclic molecules has been developed. This strategy utilizes the boroxine moiety as a covalent template to produce macrocyclic compounds through reactions with alkenyl chains. This method eliminates the need for template molecules and simplifies the synthetic procedure.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Organic
Atsushi Ueda, Yui Makura, Sana Kakazu, Takuma Kato, Tomohiro Umeno, Kazuhiro Hirayama, Mitsunobu Doi, Makoto Oba, Masakazu Tanaka
Summary: In this study, a selective E-type ring-closing metathesis reaction was discovered in α-helical stapled peptides. By using chiral carbocyclic α,α-disubstituted α-amino acids, a high E-selectivity was achieved, while standard acyclic amino acids resulted in lower selectivity. The stapled octapeptide exhibited a right-handed α-helical crystal structure.
Article
Chemistry, Multidisciplinary
Jun Zhu, Rui Zhang, Guangbin Dong
Summary: A rare reversible C-C single-bond metathesis reaction catalyzed by ruthenium was reported, enabling the synthesis of biaryl compounds under redox-neutral and pH-neutral conditions. The reaction mode involves unexpected 18-electron closed-shell intermediates and is expected to inspire the development of more general C-C single-bond metathesis and orthogonal cross-coupling reactions.
Review
Chemistry, Organic
Jennifer Morvan, Antonio Del Vecchio, Jakub Talcik, Dylan Bouetard, Marc Mauduit
Summary: Asymmetric Olefin Metathesis (AOM) is a highly versatile synthetic tool for producing chiral building blocks with excellent enantiopurity. Catalysts that can control both the Z-selectivity and enantioselectivity of metathesis transformations are in high demand due to the ubiquity of Z-alkene moiety in natural products. This review comprehensively covers all the breakthroughs achieved in the challenging field of Z-enantioselective olefin metathesis, which is important in the total synthesis of complex molecules.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Xiaoling Zhao, Shu Zeng, Xueliang Zhang, Quanzheng Deng, Xiujie Li, Wenguang Yu, Kake Zhu, Shutao Xu, Jichang Liu, Lu Han
Summary: Controlling crystal size and shape is crucial for the synthesis of hierarchical zeolites with improved mass transport and catalytic properties. The reported single-step crystallization method using structure-directing agents resulted in aligned nanocrystals with enhanced propene selectivity and catalyst lifetime in dimethyl ether-to-olefins conversion, demonstrating the potential for rational synthesis of hierarchical zeolitic materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Nanoscience & Nanotechnology
Wen Liu, Junjie Li, Zhenni Liu, Zhiqiang Yang, Xuebin Liu, Xingzhi Tan, Longya Xu, Xiujie Li, Xiangxue Zhu
Summary: A facile synthesis route was developed for preparing ZSM-48 zeolite with ultralarge mesoporosity, improving its catalytic stability in the m-xylene isomerization reaction and promoting its practical application.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Heng Dai, Choongsze Lee, Wen Liu, Taimin Yang, Jakob Claret, Xiaodong Zou, Paul J. Dauenhauer, Xiujie Li, Jeffrey D. Rimer
Summary: Designing zeolite catalysts with improved mass transport properties is essential for networks with one- or two-dimensional pore topologies. Introducing fins can significantly enhance catalyst lifetime and selectivity, with confirmation of identical crystallographic registry between fins and seeds. Time-resolved titration of acid sites verifies the improved mass transport properties of ferrierite with fins compared to conventional analogues.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Chemical
Weifeng Chu, Shenglin Liu, Wenjie Xin, Yanan Wang, Zhenni Liu, Chuanyu Yang, Yuzhong Wang, Longya Xu, Xiujie Li, Xiangxue Zhu
Summary: MWW zeolite is an excellent catalyst for the liquid-phase alkylation of benzene with light olefins. In this study, MCM-49 zeolite was synthesized with cyclohexylamine and shaped into cylindrical catalysts using silica sol and pseudoboehmite. The properties of the parent zeolite and shaped catalysts were characterized, and the catalytic performance of the shaped catalysts was evaluated. The results showed that HMCM-49-SiO2, with fewer Lewis acid sites and excellent diffusion property, exhibited superior catalytic performance and stability compared to the counterpart using Al2O3 as a binder.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Applied
Wen Liu, Pengfei Wei, Junjie Li, Yanan Wang, Shirui Xu, Zhiqiang Yang, Xuebin Liu, Longya Xu, Xiujie Li, Xiangxue Zhu
Summary: This study successfully controlled the morphology of Al-rich EUO zeolite through inter-zeolite transformation and discovered a solid phase crystallization mechanism. The EUO zeolite obtained by this new strategy showed higher selectivity. This research provides new insights into zeolite morphology control and crystallization mechanisms through inter-zeolite transformation.
Article
Chemistry, Applied
Pengfei Wei, Wen Liu, Junjie Li, Yanan Wang, Qiang Yu, Zhiqiang Yang, Xuebin Liu, Longya Xu, Xiujie Li, Xiangxue Zhu
Summary: This study investigated the formation mechanisms of EUO zeolites from different precursors, revealing the effects of hydrolysis temperature and timing of aluminum source introduction on EUO crystal nucleation.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Physical
Jiapei Wang, Min Liu, Junjie Li, Chuanfu Wang, Xinbao Zhang, Yingbin Zheng, Xiujie Li, Longya Xu, Xinwen Guo, Chunshan Song, Xiangxue Zhu
Summary: In this study, the phase evolution of Fe-based catalysts in CO2-assisted dehydrogenation was investigated. It was found that Fe3C is the active phase for propane dehydrogenation and shows high activity for reforming and cracking when CO2 is introduced. Higher CO2/i-C4H10 feed ratio leads to a longer persistence of iron species in a higher valence state. Fe3O4 phase remains stable with a CO2/i-C4H10 feed ratio of 1/2 or higher, resulting in a relatively stable isobutane conversion.
Article
Chemistry, Physical
Yehong Wang, Jiapei Wang, Yuda Zhang, Qiang Guo, Jie An, Yafei Liang, Yanan Wang, Pengfei Cao, Marc Heggen, Rafal E. Dunin-Borkowski, Xiangxue Zhu, Xiujie Li, Feng Wang
Summary: This study reports the application of a Sn-doped catalyst in CO2 oxidative dehydrogenation of propane. By forming PtSn alloy and increasing oxygen vacancy concentration in CeO2 support, propane conversion and propylene selectivity are improved.
Article
Nanoscience & Nanotechnology
Wen Liu, Junjie Li, Qiang Yu, Huihui Chen, Wenjuan Liu, Zhiqiang Yang, Xuebin Liu, Zhaochao Xu, Shutao Xu, Xiangxue Zhu, Xiujie Li
Summary: A hollow Al-rich ZSM-48 zeolite with improved diffusion ability and acid density has been successfully synthesized through an alumination-recrystallization strategy, solving the challenges of diffusion limitation and acid deficiency. The obtained zeolite shows excellent catalytic stability and high p-xylene yield, indicating its strong potential for industrial applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Qiang Yu, Junjie Li, Wen Liu, Yanan Wang, Weifeng Chu, Xinbao Zhang, Longya Xu, Xiangxue Zhu, Xiujie Li
Summary: A novel microporous silica-based material (MIS) with abundant micropores and wide range of pore sizes was successfully synthesized using tetrabutylammonium hydroxide (TBAOH). The optimized MIS showed high adsorption capacity for m-xylene and other volatile organic compounds (VOCs), making it a promising adsorbent for VOC removal.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Yanan Wang, Yu Zhang, Wen Liu, Qiang Yu, Zhenni Liu, Shirui Xu, Jie An, Xiujie Li, Xiangxue Zhu
Summary: Here, an efficient and rapid synthesis strategy for MOR zeolite with the assistance of organic/inorganic additives is developed. The strategy effectively promotes the nucleation of MOR and benefits the recycling of the organic structure directing agent TEAOH. By this strategy, nano-sized MOR zeolite with large mesoporous volume is successfully synthesized.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Applied
Dongpu Zhao, Xiujie Li, Weifeng Chu, Yanan Wang, Wenjie Xin, Chao Feng, Guangjin Hou, Longya Xu, Shenglin Liu, Xiangxue Zhu
Summary: Zeolite Beta nanospheres and hollow-boxes were successfully synthesized using a simple hydrothermal method. The role of NMP changed with the variation of crystallization temperature and TEAOH content. Undesired zeolites may be formed under high synthesis temperature, high Si/ Al ratio, and low TEAOH content. The obtained catalysts exhibited excellent catalytic activity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Applied
Qiong Wu, Jiamin Yuan, Chunmu Guo, Zhenni Liu, Xiujie Li, Zhiqiang Liu, Wei Wang, Wei Wu
Summary: In this study, one-dimensional SAPO-11, SAPO-31, and SAPO-41 with different pore sizes were synthesized and used as supports for Pd catalysts. Molecular dynamics simulation revealed that the diffusion of reactants and intermediates in the micropore channels was strongly affected by the opening size of the channels. The Pd/SAPO-31 catalyst showed the highest activity and yield of iso-hexadecane in the hydroisomerization of n-hexadecane, attributed to improved diffusion and favorable metal-acid balance. Furthermore, it was found that the hydroisomerization over Pd/SAPO-31 occurred via the key lock mechanism, leading to a high proportion of multi-branched iso-hexadecane at high conversion of n-hexadecane. The Pd/SAPO-31 catalyst was proven to be an effective bifunctional catalyst for industrial biodiesel production.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Engineering, Chemical
Wen Liu, Junjie Li, Qiang Yu, Yanan Wang, Weifeng Chu, Yingbin Zheng, Zhiqiang Yang, Xuebin Liu, Xiujie Li, Xiangxue Zhu
Summary: This study developed a direct synthesis route for submicron (500 nm) spherical ZSM-48 zeolite with the assistance of F- ions at low crystallization temperature. Through detailed investigation, a reliable formation mechanism of spherical ZSM-48 zeolite was proposed. The submicron spherical ZSM-48 zeolite showed significantly improved stability and higher selectivity for p-xylene in m-xylene isomerization compared to traditional zeolite.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Applied
Weifeng Chu, Xiaona Liu, Zhiqiang Yang, Hiroya Nakata, Xingzhi Tan, Xuebin Liu, Longya Xu, Peng Guo, Xiujie Li, Xiangxue Zhu
Summary: By conducting Rietveld refinement against powder X-ray diffraction data, this study unraveled the constrained Al crystallographic sites in FER-type zeolites, revealing distinct local environments and Al-rich positions, which can explain the limited catalytic activity in certain reactions.
CHINESE JOURNAL OF CATALYSIS
(2021)
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)
