Publications related to Catalytic hydrogenation of alkenes under biphasic conditions

Three-Phase Catalytic Hydrogenation of a Functionalized Alkyne: Mass Transfer and Kinetic Studies with in Situ Hydrogen Monitoring

Albert Renken, Lioubov Kiwi, Martin Grasemann

Systematic studies of mass transfer interactions with intrinsic reaction kinetics were performed for the threephase selective hydrogenation of 2-methyl-3-butyn-2-ol (MBY) to 2-methyl-3-buten-2-ol (MBE) over a modified Pd/CaC

{O}_{3}

catalyst under solvent ...

2008

Novel catalytic applications of carbon nanofibers on sintered metal fibers filters as structured supports

Marina Ruta

Supported metal catalysts are important from both an industrial and a scientific point of view. They are used, amongst others, in large-scale processes such as catalytic reforming, hydrotreating, polymerization reactions and hydrogenations. Often, these ca ...

EPFL2008

Biphasic Hydrogenation over PVP Stabilized Rh Nanoparticles in Hydroxyl Functionalized Ionic Liquids

Paul Joseph Dyson, Lioubov Kiwi, Gabor Laurenczy, Zhaofu Fei, Ning Yan, Rocio Micaela Crespo Quesada, Yuehui Li, Xuemei Yang

Polyvinylpyrrolidone stabilized rhodium nanoparticles are highly sol. in hydroxyl-functionalized ionic liqs., providing an effective and highly stable catalytic system. In hydrogenation reactions, excellent results were obtained, and transmission electron ...

2008

Enantioselective C-C bond activation of allenyl cyclobutanes: access to cyclohexenones with quaternary stereogenic centers

Nicolai Cramer

Chiral rhodium(I) complexes activate allenyl tert-cyclobutanols efficiently through enantioselective insertion into a C-C œÉ bond of the cyclobutane. Ring expansion by this method produced cyclohexenones with quaternary stereogenic centers with excellent e ...

Wiley-VCH Verlag GmbH & Co. KGaA2008

In situ NMR characterisation of an intermediate in the catalytic hydrogenation of CO2 and HCO3– in aqueous solution

Paul Joseph Dyson, Gabor Laurenczy

The water soluble ruthenium(II) complex [RuCl2(PTA)([9]aneS3)] (PTA = 1,3,5-triaza-7-phosphadamantane, [9]aneS3 = 1,4,7-trithiacyclononane) catalyzes the hydrogenation of CO2 and bicarbonate in aqueous solution. ...

2007

A Metallacage Encapsulating Chloride as a Probe for a Solvation Scale in Ionic Liquids

Paul Joseph Dyson, Corinne Daguenet

With the purpose of assessing the reactivity of chloride ions dissolved in ionic liquids (ILs), a relative scale for the solvation of chloride is given for a series of ILs based on the bis(trifluoromethane)sulfonimide ([Tf2N]) anion and differen ...

2007

Mechanistic Studies on the Formation of eta(2)-Diphosphine (eta(6)-p-cymene)ruthenium(II) Compounds

Paul Joseph Dyson, Gabor Laurenczy, Céline Fellay

A new range of pendent diphosphine (η6-p-cymene)ruthenium(II) complexes, [RuCl(PPh3)(η1-(P-P))(η6-p-cymene)]PF6 (P-P = dppm, cis-PPh2CHCHPPh2

2007

Catalytic Activity of Bis-phosphine Ruthenium(II)-Arene Compounds: Chemoselective Hydrogenation and Mechanistic Insights

Paul Joseph Dyson

Bis-phosphine Ru(II)-arene complexes are highly active and chemoselective catalysts for the hydrogenation of aldehydes in the presence of olefinic bonds. Mechanistic studies, including comparisons with a structural analog, reactions of an isolated hydride ...

2007

Carbon dioxide hydrogenation catalyzed by a ruthenium dihydride: a DFT and high-pressure spectroscopic investigation

Gabor Laurenczy

Reaction pathways during CO2 hydrogenation catalyzed by the Ru dihydride complex [Ru(dmpe)2H2] (dmpe=Me2PCH2CH2PMe2) have been studied by DFT calculations and by IR ...

2007

Heterogeneous dehalogenation of arylhalides in the presence of ionic liquids

Gabor Laurenczy

Dehydrohalogenation of haloaromatics in ionic liquids derived from ethylmethylimidazolium or similar salts has been performed using Pd-C, Pd(OAc)2 and other catalysts using formate salts as a hydrogen source. In the ionic liquid [emim][BF4< ...

2007

Catalytic hydrogenation of alkenes under biphasic conditions

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Three-Phase Catalytic Hydrogenation of a Functionalized Alkyne: Mass Transfer and Kinetic Studies with in Situ Hydrogen Monitoring

Novel catalytic applications of carbon nanofibers on sintered metal fibers filters as structured supports

Biphasic Hydrogenation over PVP Stabilized Rh Nanoparticles in Hydroxyl Functionalized Ionic Liquids

Enantioselective C-C bond activation of allenyl cyclobutanes: access to cyclohexenones with quaternary stereogenic centers

In situ NMR characterisation of an intermediate in the catalytic hydrogenation of CO2 and HCO3– in aqueous solution

A Metallacage Encapsulating Chloride as a Probe for a Solvation Scale in Ionic Liquids

Mechanistic Studies on the Formation of eta(2)-Diphosphine (eta(6)-p-cymene)ruthenium(II) Compounds

Catalytic Activity of Bis-phosphine Ruthenium(II)-Arene Compounds: Chemoselective Hydrogenation and Mechanistic Insights

Carbon dioxide hydrogenation catalyzed by a ruthenium dihydride: a DFT and high-pressure spectroscopic investigation

Heterogeneous dehalogenation of arylhalides in the presence of ionic liquids

Three-Phase Catalytic Hydrogenation of a Functionalized Alkyne: Mass Transfer and Kinetic Studies with in Situ Hydrogen Monitoring

Mechanistic Studies on the Formation of eta(2)-Diphosphine (eta(6)-p-cymene)ruthenium(II) Compounds

Enantioselective C-C bond activation of allenyl cyclobutanes: access to cyclohexenones with quaternary stereogenic centers

Catalytic Activity of Bis-phosphine Ruthenium(II)-Arene Compounds: Chemoselective Hydrogenation and Mechanistic Insights

A Metallacage Encapsulating Chloride as a Probe for a Solvation Scale in Ionic Liquids

Novel catalytic applications of carbon nanofibers on sintered metal fibers filters as structured supports

Heterogeneous dehalogenation of arylhalides in the presence of ionic liquids

Carbon dioxide hydrogenation catalyzed by a ruthenium dihydride: a DFT and high-pressure spectroscopic investigation

In situ NMR characterisation of an intermediate in the catalytic hydrogenation of CO2 and HCO3– in aqueous solution

Biphasic Hydrogenation over PVP Stabilized Rh Nanoparticles in Hydroxyl Functionalized Ionic Liquids