Article
Chemistry, Physical
Laurent Vanoye, Boris Guicheret, Camila Rivera-Carcamo, Jeremy Audevard, Javier Navarro-Ruiz, Iker del Rosal, Iann C. Gerber, Cristian H. Campos, Bruno Fernandes Machado, Jerome Volkman, Regis Philippe, Philippe Serp, Alain Favre-Reguillon
Summary: This study reports on the synthesis, characterization, and kinetic evaluation of two highly active Pd catalysts supported on different carbon supports. The activities of both catalysts were high due to the unique cooperative catalysis between Pd single atoms and nanoparticles. However, heat management during the reactor operation with these catalysts is crucial to avoid deactivation and thermal runaway.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Ziyi Zhang, Yunhao Zang, Feng Gao, Jiangying Qu, Jianfeng Gu, Xuetan Lin
Summary: A sulfur-containing zirconia supported nickel catalyst was prepared to convert CO2 to CO efficiently and stably. By adjusting the support size, the catalyst showed improved activity and achieved high CO2 conversion with selective production of CO.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Bon Seung Goo, Kyungrok Ham, Yeji Han, Seunghoon Lee, Hayoon Jung, Yongmin Kwon, Youngmin Kim, Jong Wook Hong, Sang Woo Han
Summary: This study developed a novel approach to investigate the intrinsic catalytic reactivity of edge and terrace atoms in nanocrystal catalysts. By comparing the catalytic behaviors of edge-covered Pd NCs with those of pristine Pd NCs, researchers successfully decoupled the activity of edge and {110}-plane atoms.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Bon Seung Goo, Kyungrok Ham, Yeji Han, Seunghoon Lee, Hayoon Jung, Yongmin Kwon, Youngmin Kim, Jong Wook Hong, Sang Woo Han
Summary: This study successfully decouples the activity of the edge and {110}-plane atoms of Pd NCs by comparing the catalytic behaviors of edge-covered Pd NCs with pristine Pd NCs, providing a new method for more precise examination of the surface properties of various NC catalysts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
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.
Review
Chemistry, Multidisciplinary
Tianjun Zhang, Andrew G. Walsh, Jihong Yu, Peng Zhang
Summary: This review discusses the development and application of single-atom alloy catalysts, highlighting structural analysis at the atomic scale using microscopy and spectroscopy tools, electronic properties research through X-ray spectroscopy techniques and quantum calculations, and catalytic activity in representative reactions. It also proposes future perspectives for single-atom alloy catalysts from structural, electronic, and reactivity aspects.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Chemistry, Physical
Wen Zhao, Tianlong Wang, Baoan Wang, Ran Wang, Yu Xia, Mengping Liu, Lihong Tian
Summary: Palladium nanodendrites supported on oxygenated carbon layer were prepared by adjusting the mass ratio of Pd (II) precursor and carbon dots derived from sucrose. Oxygen-bearing groups on carbon dots played a crucial role in reducing Pd(II) into Pd(0), controlling nanoparticle growth, and stabilizing Pd nanodendrites. The as-prepared Pd/ O-carbon exhibited size-dependent catalytic activity and long-term chemical stability in the reduction reaction.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Applied
Shahram Alijani, Sofia Capelli, Claudio Evangelisti, Laura Prati, Alberto Villa, Stefano Cattaneo
Summary: Hydrodeoxygenation of lignin is crucial for biomass valorization to reduce oxygen content and synthesize various products. Pd nanoparticles supported on carbon materials are highly active in hydrogenation and hydrogenolysis reactions. Carbon supports with different properties significantly impact the activity and selectivity of the hydrogenation process.
Article
Chemistry, Physical
Xinkai Yang, Hongxin Ding, Yuanhang Ren, Yikun Kang, Yefei Li, Zhen Hua Li, Bin Yue, Heyong He, Xueying Chen
Summary: Surface-clean Pd nanocrystals enclosed by different facets without capping agents have been successfully synthesized, and it was found that Pd {100} facet exhibits higher turnover frequency in acetophenone hydrogenation.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Jeremy Audevard, Javier Navarro-Ruiz, Vincent Bernardin, Yann Tison, Anna Corrias, Iker Del Rosal, Alain Favre-Reguillon, Regis Philippe, Iann C. Gerber, Philippe Serp
Summary: Pd/C catalysts are widely used in hydrogenation reactions, with Pd nanoparticles promoting H-spillover. However, in selective hydrogenation, unpromoted Pd/C catalysts are not effective. Pd single atom catalysts, although selective, have low activity. By utilizing a cooperative catalysis between Pd nanoparticles and Pd single atoms, high selectivity and activity can be achieved.
Article
Chemistry, Applied
Ilaria Barlocco, Silvio Bellomi, Juan J. Delgado, Xiaowei Chen, Laura Prati, Nikolaos Dimitratos, Alberto Roldan, Alberto Villa
Summary: Palladium nanoparticles were deposited on oxygen and phosphorous functionalized carbon nanofibers to investigate the support-metal effect on the formic acid decomposition reaction. Characterization and evaluation of catalytic performance confirmed the superior properties of the catalysts in both functionalized materials. Density functional theory simulations further provided insights into the interaction between Pd clusters and different support surfaces.
Article
Chemistry, Multidisciplinary
Ye Hwan Lee, Jeong Yoon Ahn, Dinh Duc Nguyen, Soon Woong Chang, Sung Su Kim, Sang Moon Lee
Summary: The study revealed that the reducibility of both metal and support at low temperature, strong metal support interaction, and small Ni particle size are important factors for low-temperature CO2 methanation. The differences in CO2 adsorption properties and reaction pathways were discussed based on reduced and unreduced Ni based supported catalysts.
Article
Chemistry, Physical
Jose L. Cerrillo, Christian W. Lopes, Fernando Rey, Antonio E. Palomares
Summary: The catalytic behavior of palladium catalysts depends on the support nature and metal precursor used. Alumina-supported catalyst shows the best results due to its physical-chemical properties, while the Pd precursor salt influences the catalytic activity by affecting the Pd nanocrystal size. Homogeneous and large Pd metallic crystallites are preferred for better catalytic performance.
Article
Chemistry, Physical
Cristina Ruiz-Garcia, Miguel A. Gilarranz
Summary: Nitrogen-doped porous carbons were prepared using chitosan as a precursor, showing homogeneous nitrogen doping and a lamellar morphology. Catalysts with well-dispersed Pd nanoparticles were synthesized and tested for hydrodechlorination, demonstrating fast and total removal of 4-chlorophenol despite low metal content.
Article
Chemistry, Physical
Sourav Ghosh, Laurence Courtheoux, Sylvette Brunet, Patrick Lacroix-Desmazes, Annie Pradel, Etienne Girard, Denis Uzio
Summary: Several CoMoS/carbons were synthesized using hydrothermal-type approaches followed by a surface reaction with Co for the promotion step. The impact of carbon nanostructures (1D nanofibers/tubes or 2D nanosheets) as a matrix on the characteristics and catalytic properties of CoMoS crystallites was investigated in hydrotreating reactions. The microstructure was found to affect the HDS mechanism of 4-MethylDiBenzoThiophene (4-MDBT) and the selectivity of 3-MethylThiophene (3-MT) HDS/2,3-DiMethylBut-2-eNe (2,3-DM2BN) hydrogenation.
Article
Chemistry, Multidisciplinary
R. M. Mironenko, O. B. Belskaya, V. A. Likholobov
Summary: The rate and selectivity of the liquid-phase hydrogenation of furfural depend on the chemical nature of the catalyst and solvent.
RUSSIAN CHEMICAL BULLETIN
(2022)
Review
Chemistry, Multidisciplinary
Roman M. Mironenko, Vladimir A. Likholobov, Olga B. Belskaya
Summary: The results of studies related to the development of palladium +/- carbon catalyst and the mechanisms involved are analyzed and integrated in this paper. The focus is on Pd/NGC compositions (NGC is nanoglobular carbon), and the methods for preparing NGC, particularly carbon black, are considered. The paper also discusses the factors influencing the catalytic properties of Pd/NGC and compares it with other carbon-supported palladium catalysts. The bibliography includes 623 references.
RUSSIAN CHEMICAL REVIEWS
(2022)
Article
Chemistry, Physical
Andrey N. Lebedev, Konstantin S. Rodygin, Roman M. Mironenko, Elina R. Saybulina, Valentine P. Ananikov
Summary: A simple and efficient strategy for synthesizing metal/alloy-on-carbon catalysts has been developed, resulting in highly active catalysts with intrinsic hierarchical organization, excellent stability, and high selectivity.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Olga B. Belskaya, Roman M. Mironenko, Tatiana Gulyaeva, Mikhail Trenikhin, Ivan Muromtsev, Svetlana Trubina, Valentina V. Zvereva, Vladimir A. Likholobov
Summary: The changes in the properties and state of nickel in the synthesis of nickel catalysts using NiAl-layered double hydroxides were investigated. It was found that the use of NiAl LDH as the catalyst precursor allows for the obtaining of active dispersed nickel particles, and higher catalyst reduction temperature leads to increased catalyst activity and conversion rate.
Article
Chemistry, Physical
Yury G. Kryazhev, Irina V. Anikeeva, Mikhail V. Trenikhin, Tatiana I. Gulyaeva, Valeriy P. Melnikov, Vladimir A. Likholobov, Olga B. Belskaya
Summary: Porous carbon-carbon composite materials were synthesized using polyvinyl chloride solutions in dimethyl sulfoxide and modifying additives. The obtained composites showed a porous carbon structure with either carbon nanoglobules or crumpled sheet carbon particles, depending on the additives used. The study analyzed transmission electron microscopy images to study local areas of the materials and determine the distances between graphene layers. The synthesized materials showed varying fractions of mesopores and specific surface areas, making them suitable for various applications.
Article
Energy & Fuels
E. N. Terekhova, O. B. Belskaya, M. V. Trenikhin, A. V. Babenko, I. V. Muromtzev, V. A. Likholobov
Summary: Carbon-mineral supports obtained from carbonization of sapropels were used to synthesize nickel-containing catalysts. The study investigated the effect of catalyst composition on the catalytic hydroliquefaction of sapropel organic matter. Catalysts based on a support prepared from mineral-type sapropel showed higher activity.
Article
Chemistry, Physical
Elena N. Terekhova, Olga B. Belskaya, Rinat R. Izmaylov, Mikhail V. Trenikhin, Vladimir A. Likholobov
Summary: Nickel catalysts were synthesized using carbon-mineral supports derived from sapropel, and the effect of support nature and active component precursor on catalytic activity in liquid-phase nitrobenzene hydrogenation was studied. Catalysts with a smaller fraction of carbon in the support exhibited higher activity regardless of the precursor nature. The catalysts synthesized using nickel nitrate and nickel formate showed the highest activity with nitrobenzene conversion of 65% and 51% respectively after 1 hour of reaction. The catalysts maintained high activity with 100% aniline selectivity after six reaction cycles. The presence of sulfur in the nickel precursor decreased catalytic activity (conversion less than 3%) due to the formation of the sulfide phase.
Article
Chemistry, Inorganic & Nuclear
Olga B. Belskaya, Elena N. Terekhova, Oksana V. Gorbunova, Ivan V. Muromtsev, Mikhail V. Trenikhin, Aleksei N. Salanov, Vladimir A. Likholobov
Summary: The paper discusses the synthesis and application of CuAl layered double hydroxides (LDHs) as catalysts for selective hydrogenation. Homogeneous LDHs were obtained through co-precipitation and mechanochemical methods, and the important parameters for their formation were identified. The co-precipitation method was found to be most influenced by pH and CO32-/Al3+ ratio, while mechanochemical synthesis allowed for shorter synthesis time and improved catalytic activity. Both catalysts showed high selectivity for double bond hydrogenation with significantly higher conversion for the mechanochemically synthesized sample.
Review
Chemistry, Physical
R. M. Mironenko, O. B. Belskaya, V. A. Likholobov
Summary: Hydrogenation of furfural with heterogeneous catalysts is a promising method for synthesizing oxygen-containing compounds from renewable raw materials. The composition of the catalyst and its preparation conditions determine the predominant routes of reductive conversions during furfural hydrogenation. This review discusses methods for controlling the physicochemical and functional properties of Pd, Ni, Co, and Cu-containing catalytic compositions and their influence on the activity and selectivity of supported catalysts in furfural hydrogenation under aqueous-phase conditions.
DOKLADY PHYSICAL CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Oleg Potapenko, Vladimir P. Doronin, Tatyana P. Sorokina, Vladimir A. Likholobov
Summary: The review summarizes and critically analyzes recent exploratory and basic studies on hydrogen transfer reactions in hydrocarbon conversion processes. It discusses the regularities of these reactions in various systems, focusing on the role of intermolecular hydrogen transfer in zeolite-catalyzed cracking of hydrocarbons. The review also includes data on the development and properties of zeolite-based catalysts for hydrocarbon cracking.
RUSSIAN CHEMICAL REVIEWS
(2023)
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.
