Results 41 to 50 of about 948,396 (365)

Homogeneously catalysed conversion of aqueous formaldehyde to H2 and carbonate

open access: yesNature Communications, 2017
Aqueous formaldehyde is an attractive hydrogen storage system due to the high weight percentage of hydrogen present. Here the authors report a highly active homogeneous ruthenium catalyst system, allowing hydrogen production from formaldehyde-water under
M. Trincado   +5 more
doaj   +1 more source

Magnetically Separable Base Catalysts: Heterogeneous Catalysis vs. Quasi-Homogeneous Catalysis

open access: yesApplied Sciences, 2012
The synthesis of magnetically separable quasi-homogeneous base catalyst and heterogeneous base catalyst is described. The quasi-homogeneous catalyst is achieved by supporting silane monomers functionalized with different amine groups directly on the ...
Raed Abu-Reziq, Howard Alper
doaj   +1 more source

Homogeneous, heterogeneous, and enzyme catalysis in microfluidics droplets

open access: yesSmart Molecules, 2023
Microfluidics has received extensive attention due to its ability to rapidly prepare a large number of microdroplets with controlled sizes and defined morphologies.
Fang Mei   +5 more
doaj   +1 more source

Trispyrazolylborate Ligands Supported on Vinyl Addition Polynorbornenes and Their Copper Derivatives as Recyclable Catalysts [PDF]

open access: yes, 2019
Polynorbornenes prepared by vinyl addition poly- merization and bearing pendant alkenyl groups serve as skeletons to support trispyrazolylborate ligands (Tpx) built at those alkenyl sites.
Albéniz Jiménez, Ana Carmen   +6 more
core   +2 more sources

Graphitic phosphorus coordinated single Fe atoms for hydrogenative transformations

open access: yesNature Communications, 2020
Phosphorus ligands have been extensively used in metal complexes for homogeneous catalysis. Here, the authors broaden this scope to heterogeneous catalysis by preparing a P-coordinated Fe single atom catalyst with excellent catalytic performance in ...
Xiangdong Long   +8 more
doaj   +1 more source

Density functional theory methods applied to homogeneous and heterogeneous catalysis: a short review and a practical user guide.

open access: yesPhysical Chemistry, Chemical Physics - PCCP
The application of density functional theory (DFT) methods in catalysis has been growing fast in the last few decades thanks to both the availability of more powerful high computing resources and the development of new efficient approximations and ...
Valeria Butera
semanticscholar   +1 more source

Review of catalytic systems and thermodynamics for the Guerbet condensation reaction and challenges for biomass valorization [PDF]

open access: yes, 2015
The Guerbet condensation reaction is an alcohol coupling reaction that has been known for more than a century. Because of the increasing availability of bio-based alcohol feedstock, this reaction is of growing importance and interest in terms of value ...
Gabriels, D   +4 more
core   +2 more sources

Model arenes hydrogenation with silica-supported rhodium nanoparticles:The role of the silica grains and of the solvent on catalytic activities [PDF]

open access: yes, 2009
Silica-supported rhodium-based nanoheterogeneous catalysts were easily prepared by impregnation with a pre-stabilized colloidal suspension. The resulting catalysts contain rhodium nanoparticles well-dispersed in the silica pores with a mean size of 5 nm.
Barthe, Laurie   +5 more
core   +4 more sources

Heterogeneous Catalysis on a Disordered Surface

open access: yes, 1995
We introduce a simple model of heterogeneous catalysis on a disordered surface which consists of two types of randomly distributed sites with different adsorption rates.
D. ben-Avraham   +17 more
core   +1 more source

Ring-opening copolymerization (ROCOP): synthesis and properties of polyesters and polycarbonates [PDF]

open access: yes, 2015
Controlled routes to prepare polyesters and polycarbonates are of interest due to the widespread application of these materials and the opportunities provided to prepare new copolymers. Furthermore, ring-opening copolymerization may enable new poly(ester–
Brooks, R   +5 more
core   +1 more source

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