Ruthenium Catalyst
Ruthenium Catalyst - Related Videos
10:51
The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
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Cited by 4 •
2015
Ruthenium phosphine complexes are widely used for homogeneous catalytic reactions such as hydrogenations. The synthesis of a series of novel tridentate ruthenium complexes bearing the N-triphos ligand N(CH2PPh2)3 is reported. Additionally, the stoichiometric reaction of a dihydride Ru–N-triphos complex with levulinic acid is described.
10:39
Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction
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Cited by 3 •
2018
A removable water-soluble N-heterocyclic carbene (NHC) ligand in aqueous media via host-guest interaction has been developed. We demonstrated representative olefin metathesis reactions in water as well as in dichloromethane. Via either host-guest interaction or extraction, the residual ruthenium (Ru) catalyst was as low as 0.14 ppm after the reaction.
07:39
Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst
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Cited by 5 •
2016
This article describes a process for producing polymeric self-assembled nanoparticles using visible light mediated dispersion polymerization. Using low energy visible light to control the polymerization allows for the reproducible formation of self-assembled worm-like micelles at high solids content.
11:15
HKUST-1 as a Heterogeneous Catalyst for the Synthesis of Vanillin
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Cited by 12 •
2016
The conversion of trans-ferulic acid to vanillin was achieved by heterogeneous catalysis. HKUST-1 was employed in this synthesis and the essential step in the catalytic process was the generation of unsaturated metal sites. Thus, when the catalyst was activated under vacuum, full vanillin conversion (yield of 95%) was obtained.
09:53
Predicting Catalyst Extrudate Breakage Based on the Modulus of Rupture
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Cited by 3 •
2018
Here we present a protocol to measure the modulus of rupture of an extruded catalyst and the breakage of said catalyst extrudates by collision against a surface or by compression in a fixed bed.
FAQs
Ruthenium catalysts can promote reactivity through several complementary pathways: they may coordinate reactants, change oxidation state, or form reactive metal-carbon bonds. These interactions create lower-energy routes than the uncatalyzed alternative and help determine which bonds form, how quickly a transformation proceeds, and, when relevant, which stereochemical outcome is favored.
Catalyst design controls how ruthenium interacts with reactants during a reaction. Changes in these interactions can influence the reaction rate, product selectivity, and stereochemistry, meaning the relative formation of different products or three-dimensional arrangements. This control is especially important when synthetic chemists need efficient transformations that produce a preferred product rather than a mixture.
Ruthenium catalysts support several distinct transformation types, including hydrogenation, olefin metathesis, oxidation, and carbon-carbon bond formation. Each class applies the catalyst's reactivity to a different synthetic challenge: modifying unsaturated compounds, reorganizing olefins, adding oxygen-related functionality, or constructing carbon frameworks. The appropriate reaction class depends on the desired chemical transformation.
Temporary coordination with reactants and the formation of reactive metal-carbon bonds can guide how reacting partners approach one another. Changes in ruthenium oxidation state also alter the sequence of interactions available during the transformation. Together, these features can affect stereochemistry as well as product selectivity, making mechanistic control important when a specific molecular arrangement is required.
Selection begins with the desired transformation, such as hydrogenation, olefin metathesis, oxidation, or carbon-carbon bond formation. Researchers then consider how catalyst behavior may affect reaction rate, selectivity, stereochemistry, and product yield. This process links catalyst design to the practical goal of controlling a challenging chemical reaction while limiting unnecessary waste.
Important outcomes include reaction rate, product selectivity, stereochemical control, and yield. Researchers can use these measures to determine whether a catalyst provides the intended transformation and favors the desired product. Evaluation also helps compare catalyst systems in terms of efficiency and waste reduction, supporting improvements in synthetic procedures and broader catalyst development.
Ruthenium catalysis contributes to pharmaceutical synthesis, materials development, and energy-related research. In these areas, the catalysts enable transformations such as hydrogenation, olefin metathesis, oxidation, and carbon-carbon bond formation. Ongoing work seeks systems that are more efficient, selective, and sustainable, extending their usefulness across synthetic chemistry and applied scientific research.