Article
Chemistry, Multidisciplinary
Xianghong Ge, Hui Liu, Xingxing Ding, Yanyan Liu, Xingsheng Li, Xianli Wu, Baojun Li
Summary: This study successfully fabricated Ru@CNT composite microsponge using supercritical CO2, achieving the selective anchoring of metal nanoparticles into the internal space of carbon nanotubes. The catalytic activity of Ru@CNTs was found to be significantly influenced by the catalyst preparation temperature, hydrogenation temperature, and time.
Article
Chemistry, Multidisciplinary
Hui Wang, Ambra Maria Fiore, Christophe Fliedel, Eric Manoury, Karine Philippot, Maria Michela Dell'Anna, Piero Mastrorilli, Rinaldo Poli
Summary: Rhodium nanoparticles embedded in amphiphilic core-crosslinked micelle latexes were synthesized through reduction. The choice of outer shell material greatly influenced the migration and dispersion of the nanoparticles.
NANOSCALE ADVANCES
(2021)
Article
Multidisciplinary Sciences
Liang Ling, Chenyang Hu, Linhong Long, Xue Zhang, Lixing Zhao, Liu Leo Liu, Hui Chen, Meiming Luo, Xiaoming Zeng
Summary: The hydrogenation of alkynes allows for the synthesis of olefins, which have various industrial applications. Achieving stereochemical control in this reaction has been a challenge. This study reports on a chromium-catalyzed method for selectively synthesizing E- and Z-olefins via the hydrogenation of alkynes, controlled by two carbene ligands.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Simon Rengshausen, Casey Van Stappen, Natalia Levin, Simon Tricard, Kylie L. Luska, Serena DeBeer, Bruno Chaudret, Alexis Bordet, Walter Leitner
Summary: Synthesis, characterization, and catalytic properties of bimetallic cobalt-rhodium nanoparticles immobilized in an imidazolium-based supported ionic liquid phase are described. The Co:Rh ratio has a critical influence on catalytic activity and selectivity, showing clear synergistic effects. Particularly, a sharp switch in hydrogenation ability for 6-membered aromatic rings is observed within a narrow composition range.
Article
Food Science & Technology
Dianyu Yu, Jie Cheng, Ning Wang, Ziyue Li, Xing Chen, Fei Wu, Fuming Yang, Liqi Wang
Summary: The Rh/MWCNT catalyst prepared by the impregnation method successfully converted linoleic acid in evening primrose oil to conjugated linoleic acid, exhibiting good catalytic properties and the ability for multiple reuses. This provides a theoretical basis for the production of conjugated linoleic acid and shows potential applications in catalysis.
JOURNAL OF FOOD PROCESSING AND PRESERVATION
(2021)
Article
Chemistry, Inorganic & Nuclear
Wen-Zhong Jiao, Peng Yin, Lei Tong, Shi-Long Xu, Chang-Song Ma, Lu-Jie Zuo, Ao Wang, Hai-Wei Liang
Summary: This article introduces a new method for controlling the size of Pd-based intermetallic nanoparticles (i-NPs) by taking advantage of the strong chemical interaction between Al3+ sites and Pd-based i-NPs. The researchers synthesized six types of Pd-based i-NPs, with four of them maintaining a small average particle size. One of the prepared Pd3Pb-based i-NPs exhibited outstanding performance in catalyzing the semi-hydrogenation of phenylacetylene.
INORGANIC CHEMISTRY
(2022)
Article
Engineering, Chemical
Cun Liu, Peng Zhu, Haiou Liu, Xiongfu Zhang
Summary: This study utilized a top-down strategy to encapsulate Rh species within one-dimensional KL channels and then reduce the catalysts at different temperatures, in order to tailor the locations and electronic states of Rh nanoparticles for selective phenol hydrogenation. Kinetic studies showed that increasing the reduction temperature improved the activity of Rh catalysts, while maintaining similar time profiles. The improved activity was attributed to the more electron-rich chemical state of Rh nanoparticles as they migrated from the central location to the edge or surface of the KL zeolite, facilitating electron acceptance from potassium.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Maodi Wang, Qihua Yang
Summary: The modulation of the microenvironment of active sites using porous materials enriched with organic functional groups can solve the trade-off problem between activity and selectivity in selective hydrogenation with supported metal catalysts. The enrichment, oriented adsorption and activation of substrates induced by non-covalent interactions determine the hydrogenation activity and selectivity.
Article
Chemistry, Multidisciplinary
Chantal J. Abou-Fayssal, Christophe Fliedel, Rinaldo Poli, Anders Riisager, Karine Philippot, Eric Manoury
Summary: This study introduces a method to improve the confinement of rhodium nanoparticles (RhNPs) in nanoreactors by introducing phosphine oxide as anchoring groups in the hydrophobic core of amphiphilic star-block copolymers. The RhNP-loaded latex exhibits excellent catalytic activity and recyclability, making it a promising candidate for aqueous biphasic catalysis.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Physical
Seda Karaboga
Summary: The study focuses on the preparation and characterization of tungsten(VI) oxide supported rhodium(0) nanoparticles (Rh-0/WO3 NPs) used as catalysts for releasing H-2 from dimethylamine borane (DMAB). Rh-0/WO3 NPs exhibit high catalytic activity, with the sample containing 0.1% wt. Rh showing the highest catalytic activity (TOF = 2816 h(-1)). Additionally, the Rh-0/WO3 NPs show good reusability, retaining 55% of their initial catalytic activity after being reused in the dehydrogenation reaction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Yi-Xuan Ding, Zhou-Hao Zhu, Mu-Wang Chen, Chang-Bin Yu, Yong-Gui Zhou
Summary: In this study, the asymmetric hydrogenation of all-carbon aromatic rings was achieved using rhodium/diphosphine catalysts. The introduction of chiral diphosphine ligands with steric hindrance and strong electron-donating properties was key to the success in obtaining axially chiral cyclic compounds with high enantioselectivity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Chemistry, Multidisciplinary
Ruiyan Sun, Yuhe Liao, Shao-Tao Bai, Mingyuan Zheng, Cheng Zhou, Tao Zhang, Bert F. Sels
Summary: This review comprehensively summarizes the latest advancements in heterogeneous catalysis of CO2 hydrogenation to formic acid/formate, highlighting nanostructured and single atom catalysts based on noble metals. Key factors related to catalytic activity are emphasized, providing a strong foundation for rational catalyst design.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Organic
M. Nasiruzzaman Shaikh, Abdul Aziz, S. M. Shakil Hussain, Aasif Helal
Summary: In this study, a simple method for immobilizing phosphine complex on ultrasmall magnetic nanoparticles for catalytic reactions was described. A diphenylphosphino-ferrocenylethyl amine was conjugated with dopamine hydrochloride to form a complex, which was then anchored on the surface of magnetic nanoparticles to prepare the catalyst. The experimental results showed that the catalyst exhibited good catalytic performance and wide applicability in transfer hydrogenation and hydroformylation reactions.
ASIAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Reshma Kokane, Yann Corre, Erhard Kemnitz, Mohan K. Dongare, Francine Agbossou-Niedercorn, Christophe Michon, Shubhangi B. Umbarkar
Summary: The Pd/MgF2-x(OH)(x) palladium catalyst supported on acidic fluorinated magnesium hydroxide exhibited good catalytic activity in hydrogenation reactions, with the support's acid sites playing a key role in pre-activating N-heterocycle substrates. Additionally, the catalyst showed high recyclability up to 10 times without loss of activity or palladium leaching.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Applied
Aritomo Yamaguchi, Yuka Murakami, Kiyoyuki Yamazaki, Masayuki Shirai, Norihito Hiyoshi
Summary: This study investigated the conditions for the stereoselective hydrogenation of guaiacol and found that using the Rh/C catalyst in supercritical CO2 resulted in a higher proportion of cis-2-methoxycyclohexanol.
Article
Engineering, Chemical
R. Turgis, G. Arrachart, S. Michel, S. Legeai, M. Lejeune, M. Draye, S. Pellet-Rostaing
SEPARATION AND PURIFICATION TECHNOLOGY
(2018)
Article
Engineering, Chemical
Alain Favre-Reguillon, Micheline Draye, Gerard Cote, Kenneth R. Czerwinsky
SEPARATION AND PURIFICATION TECHNOLOGY
(2019)
Article
Acoustics
Tony Cousin, Gregory Chatel, Nathalie Kardos, Bruno Andrioletti, Micheline Draye
ULTRASONICS SONOCHEMISTRY
(2019)
Article
Metallurgy & Metallurgical Engineering
Cyril Micheau, Manuel Lejeune, Guilhem Arrachart, Micheline Draye, Raphael Turgis, Stephanie Michel, Sophie Legeai, Stephane Pellet-Rostaing
Review
Engineering, Environmental
Marion Zwingelstein, Micheline Draye, Jean-Luc Besombes, Christine Piot, Gregory Chatel
Article
Chemistry, Multidisciplinary
Cyril Micheau, Guilhem Arrachart, Raphael Turgis, Manuel Lejeune, Micheline Draye, Stephanie Michel, Sophie Legeai, Stephane Pellet-Rostaing
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Biochemistry & Molecular Biology
Rachel Pflieger, Manuel Lejeune, Micheline Draye
Summary: This study investigates the sonochemical degradation of [BEPip][NTf2] ionic liquid and its correlation with sonoluminescence spectra and viscosity, as well as effects of water presence. The results show that the initial evolution of sonoluminescence intensity is closely related to liquid viscosity. Furthermore, the presence of water enhances sonoluminescence and accelerates the degradation process.
Article
Food Science & Technology
Alexandre Vandeponseele, Micheline Draye, Christine Piot, Damien Bernard, Philippe Fanget, Gregory Chatel
Summary: Water content in spent coffee grounds can act as a co-solvent in supercritical CO2 extraction, influencing the extraction of both lipids and polar molecules. While pressure has the most significant effect on lipid extraction, moisture content plays a more important role in the extraction of polar molecules, mainly caffeine.
Article
Plant Sciences
Vanille Quinty, Cyril Colas, Rouba Nasreddine, Reine Nehme, Christine Piot, Micheline Draye, Emilie Destandau, David Da Silva, Gregory Chatel
Summary: Polygonum cuspidatum is a problematic invasive plant species with negative consequences. Recycling its abundant plant waste could be a sustainable management solution. This study explores the cosmetic potential of different parts of P. cuspidatum and evaluates their activities on various targets.
Article
Green & Sustainable Science & Technology
Alexandre Vandeponseele, Micheline Draye, Christine Piot, Gregory Chatel
Summary: This study explores the potential of recovering caffeine from spent coffee grounds, considering various parameters such as brewing methods, storage conditions, extraction parameters, and purification parameters. The results show that extracting caffeine from spent coffee grounds is a promising and straightforward method that aligns with an established market.
CLEAN TECHNOLOGIES
(2021)
Article
Chemistry, Multidisciplinary
Tony Cousin, Gregory Chatel, Bruno Andrioletti, Micheline Draye
Summary: The identification of intermediates and by-products formed during the oxidative cleavage of cycloalkenes has led to the proposal of a comprehensive reaction scheme. The mechanism explains the pathways for the formation of dicarboxylic acids and short chain diacids, providing a useful tool for scientists aiming to establish environmentally friendly conditions for this process.
NEW JOURNAL OF CHEMISTRY
(2021)
Review
Chemistry, Multidisciplinary
Alexandre Vandeponseele, Micheline Draye, Christine Piot, Gregory Chatel
Review
Chemistry, Medicinal
Micheline Draye, Gregory Chatel, Romain Duwald
Review
Chemistry, Physical
Tony Cousin, Gregory Chatel, Nathalie Kardos, Bruno Andrioletti, Micheline Draye
CATALYSIS SCIENCE & TECHNOLOGY
(2019)
Article
Chemistry, Physical
Rachel Pflieger, Manuel Lejeune, Cedric Noel, Thierry Belmonte, Sergey I. Nikitenko, Micheline Draye
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2019)
Article
Chemistry, Organic
Dilek Isik Tasgin, Irem Bayraktar
Summary: We present a synthetic method for pyrrolizine-3-one derivatives and investigate their photophysical properties. These compounds are prepared through a series of reactions involving substituted pyrroles in one-pot, two-step oxidation, and intramolecular cyclization processes. The photophysical properties of the synthesized compounds are studied using UV-Vis and fluorescence spectroscopy in various solvents. The introduction of pyrrolyl substituents has a significant impact on Stokes shifts and quantum yield values.
SYNTHETIC COMMUNICATIONS
(2024)
Article
Chemistry, Organic
Satish Kumar Burra, Vaikunta Rao Lakinani, Raghunadh Akula, Chiranjeevi Yankkanti
Summary: A novel and green strategy for the construction of biologically relevant substituted indolyl-4H-chromenes scaffolds is reported, using L-proline as a catalyst and water as a promoter solvent. This catalytic system offers wider applicability, shorter reaction times, and high yields, making it an ideal condition for green chemistry.
SYNTHETIC COMMUNICATIONS
(2024)
Review
Chemistry, Organic
Abouelhaoul El Alami, Amine El Maraghi, Fatima Youssoufi, Assiya Atif, Hamid Sdassi
Summary: Nitrobenzimidazoles have become increasingly important in the design of new compounds in medicinal, therapeutic and chemical fields. This review provides an overview of the synthesis strategies and biological activities of nitrobenzimidazole derivatives.
SYNTHETIC COMMUNICATIONS
(2024)
Article
Chemistry, Organic
Nilesh Raghunath Khedkar, Alex Joseph, Milind Sindkhedkar
Summary: In this study, a new library of 3-(2-(pyrimidin-5-yl)thiazol-4-yl)-1,2,4-oxadiazole compounds was designed and synthesized as potential anticancer agents using in silico fragment-based drug design. The compounds were tested for their anticancer activity in vitro, and one compound exhibited excellent activity against multiple cancer cell lines.
SYNTHETIC COMMUNICATIONS
(2024)
Article
Chemistry, Organic
Terungwa H. Iorkula, Bryce A. Tolman, Scott R. Burt, Matt A. Peterson
Summary: A new method for synthesizing C-6 substituted products has been discovered in this study, which utilizes lower doses of fluoride and CsF as a catalyst, with high reaction yields and cost-effectiveness under suitable conditions.
SYNTHETIC COMMUNICATIONS
(2024)
Review
Chemistry, Organic
Ranjana Aggarwal, Swati Sharma
Summary: This review article mainly focuses on the synthesis of 3(5)-trifluoromethylpyrazoles via condensation reaction of trifluoromethyl-beta-diketones with hydrazines. It emphasizes the importance of fluorine-containing compounds and pyrazoles in the field of biology. The literature reported condensation reactions of trifluoromethyl-beta-diketones with hydrazines are covered.
SYNTHETIC COMMUNICATIONS
(2024)
Article
Chemistry, Organic
F. M. Alshareef, Sami A. Al-Harbi, Esam S. Allehyani, Omeima Abdullah, Magdy A. Ibrahim
Summary: This study aimed to construct a novel category of linear annulated chromeno[3',2':5,6]pyrido[2,3-d][1,3]thiazolo[3,2-a]pyrimidines. The chemical reactivity of the synthesized compounds was investigated, and they showed significant antimicrobial activity against various strains.
SYNTHETIC COMMUNICATIONS
(2024)
Article
Chemistry, Organic
Preethi Dhanapal, S. L. Manju
Summary: Thiazole based Schiff base scaffolds have become an integral part of drug development in recent years, playing a versatile role as building blocks for lead drug molecules. This study presents a facile one pot synthetic method for producing novel 4-aryl thiazoles with high yield, shorter reaction time, and milder conditions, without the need for catalysts or purification techniques.
SYNTHETIC COMMUNICATIONS
(2024)
