Review
Polymer Science
Benjamin Le Droumaguet, Romain Poupart, Mohamed Guerrouache, Benjamin Carbonnier, Daniel Grande
Summary: Hybrid materials consisting of metallic nanoparticles adsorbed on porous polymeric supports have been a subject of intense research for many years. These materials benefit from intrinsic properties of both components, such as high specific surface area and catalytic properties, leading to successful catalytic reactions.
Article
Nanoscience & Nanotechnology
Yuting Yang, Yuzhuo Zhang, Tienan Wang, Xiaofei Jing, Yunling Liu
Summary: In this study, porous aromatic frameworks (PAFs) with diphosphine units were synthesized as efficient support materials for gold nanoparticles (AuNPs). These PAFs possess high surface areas and stability, allowing for scattered and accessible sites for gold coordination. The resulting Au-PAFs exhibited excellent catalytic activities in the reduction of 4-nitrophenol (4-NP) and other nitroaromatic derivatives. Furthermore, a continuous catalytic device with Au-PAF-160 catalyst was explored, demonstrating the potential applications of these materials in heterogeneous catalysis.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Hao Lv, Huaiyu Qin, Katsuhiko Ariga, Yusuke Yamauchi, Ben Liu
Summary: We report a general concurrent template strategy for the precise synthesis of mesoporous Pt-/Pd-based intermetallic nanoparticles with desired morphology and ordered mesostructure. This strategy provides a powerful method for the preparation of ordered mesoporous intermetallic nanocrystals suitable for selective catalysis and fuel cell electrocatalysis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Chemistry, Multidisciplinary
Kang Xia, Kazuya Yamaguchi, Kosuke Suzuki
Summary: This article provides an overview of recent advances in hybrid materials composed of polyoxometalates (POMs) and metal nanoparticles. The properties and applications of these materials in various fields such as electrochemistry, photochemistry, and catalysis are discussed. The combination of these two classic inorganic materials enables cooperative and synergistic behavior, presenting new possibilities for future development in this field.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Wenyan Li, Xinying Lin, Jing Long, Bo Zheng, Zhaorui Pan, Leiming Lang, Guangxiang Liu
Summary: The mesoporous core-shell structure Ag@SiO2 nanospheres are constructed to prevent aggregation of Ag nanoparticles during hydrogenation, leading to superior catalytic performance in terms of 100% conversion and selectivity in the hydrogenation of nitro compounds, with good recycling performance for multiple uses.
Article
Chemistry, Inorganic & Nuclear
Sebastian Scharf, Sebastian Notz, Rico Thomas, Michael Mehring, Christoph Tegenkamp, Petr Formanek, Rene Huebner, Heinrich Lang
Summary: Twin monomers form interpenetrating organic-inorganic hybrid materials through thermal polymerization. Carbonization and calcination produce porous MgO with high surface area, which shows excellent catalytic activity towards Meerwein-Ponndorf-Verley reductions. The twin polymerization of MgO with CuO or AgO leads to the formation of nanoparticle-decorated materials, which exhibit high catalytic reactivity towards the reduction of methylene blue.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yuki Saito, Shu Kobayashi
Summary: The application of heterogeneous catalysts in continuous-flow enantioselective hydroacylation reactions was studied. Catalysts were prepared by mixing supports and rhodium complexes, and showed excellent activity and enantioselectivity. Under optimized conditions, the catalysts exhibited high turnover numbers and could be applied to various substrates. Furthermore, sequential-flow reactions with other heterogeneous catalysts were demonstrated for the synthesis of biologically active molecules and functional materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Yanji Zhang, Jicheng Zhou
Summary: The Pt/@-ZrO2/SBA-15 catalyst demonstrated outstanding activity and selectivity for the hydrogenation of nitroarenes, achieving high turnover frequencies. The hybrid nanostructure catalyst showed high efficiency and recyclability, providing a new perspective for developing catalysts for various catalytic reactions.
JOURNAL OF CATALYSIS
(2021)
Article
Nanoscience & Nanotechnology
Xuewen Guo, Jabor Rabeah, Ruixue Sun, Dengxu Wang, Esteban Mejia
Summary: A series of hybrid porous polymers (HPPs) based on polyhedral oligomeric silsesquioxane (POSS) were synthesized and successfully used as metal-free heterogeneous photocatalysts for cross-dehydrogenative coupling reactions, showing efficient catalytic performance under visible light. The novel catalysts can be easily recovered and reused, with mechanistic investigations revealing the oxidation-reduction process during photoexcitation.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Chemistry, Multidisciplinary
Mykyta O. Ivanytsya, Vladyslav V. Subotin, Konstantin S. Gavrilenko, Serhiy V. Ryabukhin, Dmytro M. Volochnyuk, Sergey V. Kolotilov
Summary: The actual problems of catalyst development for hydrogenation of heterocyclic compounds are summarized and discussed in this review. The scope includes composites of nanoparticles of platinum group metals and 3d metals for heterogeneous catalytic processes. The review focuses on catalyst activity increase, decrease of precious metals content, selectivity, reproducibility, and quality control of the catalysts.
Review
Chemistry, Multidisciplinary
Chun Xu, Chang Lei, Yue Wang, Chengzhong Yu
Summary: Dendritic mesoporous silica nanoparticles have attracted attention due to their wide applications, but the terminology used is ambiguous. This review provides a critical analysis of reported dendritic silica nanoparticles according to their structural classification, updating the understanding of their formation mechanisms and the control of structural parameters. The review also focuses on the applications of dendritic mesoporous nanoparticles in the biomedical field, offering new insights into the structure-property relationship.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Yue Cao, Yong Wu, Yuanteng Zhang, Jing Zhou, Wei Xiao, Dong Gu
Summary: Mesoporous cobalt oxide as a catalyst shows excellent performance in the synthesis of N-heterocycles, with high turnover numbers and easy recyclability for at least six times. Comparative studies reveal that the high surface area of the catalyst plays a crucial role in catalytic reactivity.
Article
Chemistry, Inorganic & Nuclear
Israel T. Pulido-Diaz, Alejandro Serrano-Maldonado, Carlos Cesar Lopez-Suarez, Pedro A. Mendez-Ocampo, Benjamin Portales-Martinez, Aida Gutierrez-Alejandre, Karla P. Salas-Martin, Itzel Guerrero-Rios
Summary: The study demonstrates that nicotinamide groups grafted on ordered mesoporous silica (OMS) can serve as stabilizers for RhNPs used as catalysts, forming spherical rhodium nanoparticles with a narrow size distribution. On the contrary, amine-functionalized OMS tends to form RhNP aggregates after catalytic reactions, affecting the reaction efficiency. Supported RhNPs also exhibit selective reduction of different groups and show high activity in reductive amination reactions.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Jie Gao, Rui Ma, Lu Feng, Yuefeng Liu, Ralf Jackstell, Rajenahally V. Jagadeesh, Matthias Beller
Summary: This study introduces a general protocol for the selective hydrogenation and deuteration of alkenes, utilizing a specific nickel-graphitic shell-based core-shell-structured catalyst to achieve high yields of corresponding alkanes and deuterium-labeled alkanes at ambient conditions. The synthetic utility and practicability of this Ni-based hydrogenation protocol is demonstrated through gram-scale reactions and efficient catalyst recycling experiments.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Yunhao Sun, Qiang Niu, Shize Yang, Pengfei Zhang
Summary: Metal decorated-mesoporous carbons (MMCs) combine the advantages of mesoporous materials and metal species. A cobalt@mesoporous carbon (Co@MC) catalyst was successfully synthesized, and the effect of different calcination temperatures on cobalt species was studied. The Co@MC catalyst showed high phenol conversion and cyclohexanone selectivity in the phenol hydrogenation reaction.
Article
Chemistry, Applied
V. O. Samoilov, M. U. Sultanova, R. S. Borisov, A. A. Kozhevnikov, V. A. Lavrentyev, A. Sh. Utepbergenova, A. L. Maximov
Summary: A technological concept for producing a hydrocarbon LOHC prototype from LCO was proposed through experimental studies. The LCO was converted into an alkyldecalin fraction via a distillation-hydrogenation approach. The obtained LOHC showed the potential for hydrogen storage and release.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Organic
V. A. Yarchak, L. A. Kulikov, A. L. Maximov, E. A. Karakhanov
Summary: Porous aromatic framework PAF-30 was modified by introducing complexing groups to synthesize catalyst supports PAF-30-dpa-Mo, PAF-30-dpcl-Mo, and PAF-30-AA-Mo. Various analytical methods were used to characterize the materials, and the catalytic activity was tested in the epoxidation of cyclohexene, 1-hexene, 1-octene, and styrene. The reusability of the catalysts was assessed using cyclohexene epoxidation.
PETROLEUM CHEMISTRY
(2023)
Article
Chemistry, Physical
Dmitry E. E. Tsaplin, Vera A. A. Ostroumova, Leonid A. A. Kulikov, Anna V. V. Zolotukhina, Alexey A. A. Sadovnikov, Michail D. D. Kryuchkov, Sergey V. V. Egazaryants, Anton L. L. Maksimov, Kaige Wang, Zhongyang Luo, Evgeny R. R. Naranov
Summary: In this study, the textural, structural, morphological, and acidic properties of TiO2/Al-ZSM-12 zeolite synthesized via the hydrothermal method were investigated. Various methods such as XRD, low-temperature nitrogen adsorption-desorption, spectroscopy, and solid-state NMR were used to characterize the materials. It was found that TiO2/Al-ZSM-12 zeolite exhibited higher acidity and catalytic activity compared to the unsubstituted zeolite Al-ZSM-12.
Article
Biochemistry & Molecular Biology
Danila S. Bakhtin, Alexander O. Malakhov, Alexey V. Volkov, Leonid A. Kulikov, Inna V. Petrova, Ilya L. Borisov, Stepan D. Bazhenov
Summary: This study aimed to mitigate the physical aging in thin-film composite (TFC) membranes based on polymer intrinsic microporosity (PTMSP) by introducing polymer additives, including soft, branched polyethyleneimine (PEI) and rigid, porous aromatic framework PAF-11. The results showed that the introduction of cross-linked PEI improved the TFC performance, maintaining a CO2 permeance level of 30%. However, the best results were achieved by combining porous, rigid, and soft polymeric additives, which preserved the transport characteristics of the TFC membrane at 43% after 450 days.
Article
Chemistry, Physical
Tatiana Kuchinskaya, Lilit Mamian, Mariia Knyazeva, Anton Maximov
Summary: The catalytic activity of unsupported NiMoS catalysts prepared by thermal decomposition of a precursor was studied in diphenyl ether hydrodeoxygenation. The amount of sulfiding agent added was found to affect the morphological and structural features of the catalysts, with a lower amount resulting in a more active catalyst due to increased dispersion of the active phase particles.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Engineering, Chemical
Zareta M. Matieva, Natalia Kolesnichenko, Yulia M. Snatenkova, Alexander A. Panin, Anton L. Maximov, A. V. Topchiev
Summary: This study demonstrated the direct conversion of CO2 to liquid hydrocarbons using a combination of CuZnAl/Al2O3 and Zn-HZSM-5 catalysts. The best performance was achieved with a CuZnAl-Al2O3/Zn-HZSM-5 physical mixture catalyst in a 1:1 weight ratio. Under specific experimental conditions, the CO2 conversion rate was 20%, with a selectivity of 47% for C5+ hydrocarbons (78% based on total hydrocarbons), and a selectivity of methane below 2%.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Review
Chemistry, Organic
M. V. Kulikova, A. Yu. Krylova, K. O. Krysanova, A. B. Kulikov, A. L. Maximov
Summary: Torrefaction and hydrothermal carbonization are low-temperature thermochemical procedures that convert biomass into biocoal, which is a carbon-neutral alternative to fossil coal. Biocoals have hydrophobic properties, increased energy density, and similar calorific value to brown coals compared to untreated biomass. The formation mechanisms of biocoal differ between the two processes due to the presence of a large amount of water in hydrothermal carbonization. This review focuses on papers discussing specific features of low-temperature heat treatment of biomass and the conversion trends of biomass structural components (cellulose, hemicellulose, lignin) during torrefaction and hydrothermal carbonization.
PETROLEUM CHEMISTRY
(2023)
Article
Chemistry, Organic
A. V. Akopyan, E. A. Eseva, M. O. Lukashov, L. A. Kulikov
Summary: Molybdenum-containing catalysts based on PAF-30 mesoporous carbon material were synthesized for oxidation of sulfur-containing compounds (SCs) in a model fuel. The PAF-30 support was modified with functional groups containing a positively charged nitrogen atom. The modified supports were studied and optimized for various classes of SCs oxidation in model mixtures.
PETROLEUM CHEMISTRY
(2023)
Article
Chemistry, Physical
Yulia Kardasheva, Maria Terenina, Daniil Sokolov, Natalia Sinikova, Sergey Kardashev, Eduard Karakhanov
Summary: A new phosphorous-free rhodium catalyst supported on nitrogen-doped silica was developed for the hydroformylation of alkenes. The catalyst and obtained material were thoroughly characterized using various techniques. The catalyst exhibited excellent performance in the hydroformylation of octene-1, achieving high conversions and yields for aldehydes. It also showed good activity for styrene and cyclohexene, and could be used repeatedly without significant loss of activity.
Article
Chemistry, Physical
Evgeny Naranov, Alexey Sadovnikov, Olga Arapova, Tatiana Kuchinskaya, Oleg Usoltsev, Aram Bugaev, Kwinten Janssens, Dirk De Vos, Anton Maximov
Summary: The in-situ formation of supported hydrous ruthenium oxide (HRO) from RuO2 over micro-mesoporous materials is reported for the selective hydrogenation of bio-oil under mild reaction conditions (200 degrees C, 20 bar H2) in an aqueous medium. The phase composition of HRO was determined using a variety of characterization techniques for the first time. HRO was generated during the hydrodeoxygenation process, as demonstrated by synchrotron radiation and in-situ X-ray absorption spectroscopy (XAS). Hydrodeoxygenation (HDO) of real bio-oil was successfully performed at 200 degrees C, 20 bar H2 on RuO2-containing catalysts, with the approximate composition of HRO after 3 hours consisting of metallic Ru, RuO2, and RuOOH phases in approximately equal ratios.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Biochemistry & Molecular Biology
Anton Lvovich Maximov, Mayya V. Kulikova, Alexey E. Kuz'min, Mikhail I. Ivantsov
Summary: This study investigated the homogeneous acetic acid synthesis-type Ru-Co-Li/N-methylpyrrolidone catalyst for CO and H-2 transformations at moderately high pressures. Different reaction conditions were examined and the selectivity of products such as acetic acid, methyl acetate, aldehydes, ethyl acetate, long-chain hydrocarbons, and alcohols were observed. The formation of different product groups and the influence of Ru-Co cluster size on hydrocarbon chain growth were discussed.
Article
Chemistry, Organic
I. G. Baigildin, E. A. Izergina, M. Yu. Talanova, E. A. Karakhanov, A. L. Maximov, A. V. Vutolkina
Summary: This study investigated the hydrogenation of aromatics using unsupported NiMoS catalysts synthesized in situ. The catalyst was found to be active for the hydrogenation reactions of naphthalene and its derivatives, and the reaction was influenced by temperature, pressure, reaction time, and water gas shift reaction conditions.
PETROLEUM CHEMISTRY
(2023)
Article
Chemistry, Organic
E. A. Roldugina, M. P. Boronoev, I. I. Shakirov, Yu. S. Kardasheva, S. V. Kardashev, A. L. Maximov, E. A. Karakhanov
Summary: The paper investigates the performance of ruthenium and nickel catalysts supported on aluminum-modified SBA-15 mesoporous silicate in aqueous-phase furfural hydrogenation. Increasing the reaction temperature and hydrogen pressure enhances the selectivity towards methyltetrahydrofuran. The ruthenium catalyst shows higher activity than the nickel catalyst under 250°C and 5 MPa H2 conditions.
PETROLEUM CHEMISTRY
(2023)
