Results 21 to 30 of about 1,055,415 (308)

Coordination tailoring of Cu single sites on C3N4 realizes selective CO2 hydrogenation at low temperature

open access: yesNature Communications, 2021
CO2 hydrogenation has attracted intense scientific attention yet suffers from the disadvantage of poor activity and low selectivity. Here, the authors report that Cu single atom catalysts with tailored coordination environments on C3N4 serve as highly ...
Tang Yang   +9 more
doaj   +1 more source

Surface Molecule Manipulated Pt/TiO2 Catalysts for Selective Hydrogenation of Cinnamaldehyde [PDF]

open access: yes, 2021
Surface states—the electronic states emerging as a solid material terminates at a surface—are usually vulnerable to contaminations and defects. This fundamental limitation has prohibited systematic studies of the potential role of surface states in ...
Meng, Ding   +7 more
core   +1 more source

Selective Hydrogenation of 1-Hexyne Using Pd-Cu and Pd-W Supported on Alumina Catalysts

open access: yesChemical Engineering Transactions, 2013
Vinyl acetylene and 1-butyne are by products in mixed C4 separation processes and they must be eliminated due to their high flammability. However, C4 acetylene can be upgraded to higher value hydrocarbons such as 1,3-butadiene and 1-butene by using ...
P. Insorn   +2 more
doaj   +1 more source

Asymmetric hydrogenation of 1,1-diarylethylenes and benzophenones through a relay strategy

open access: yesNature Communications, 2023
Homogenous transition-metal catalysts bearing a chiral ligand are widely used for asymmetric hydrogenation of unsaturated compounds such as olefins and ketones, providing efficient concise access to products with chiral carbon centers.
Ke Li   +3 more
doaj   +1 more source

Noble Metal Nanoparticles Stabilized by Hyper-Cross-Linked Polystyrene as Effective Catalysts in Hydrogenation of Arenes

open access: yesMolecules, 2021
This work is addressing the arenes’ hydrogenation—the processes of high importance for petrochemical, chemical and pharmaceutical industries. Noble metal (Pd, Pt, Ru) nanoparticles (NPs) stabilized in hyper-cross-linked polystyrene (HPS) were shown to be
Elena S. Bakhvalova   +7 more
doaj   +1 more source

Using Graphene Encapsulated Ni and Pd Catalysts with Solvent Effect to Achieve Highly Chemo-Selective Hydrogenation of 4-Nitrostyrene to Different Products [PDF]

open access: yes, 2021
Chemo-selective hydrogenation of challenging nitrostyrene to the corresponding product of vinylaniline, ethylbenzenamine, and ethylnitrobenzene separately in high yield is difficult since there exists competitive activation of the C=C double bond and the
Jianguo, Liu   +3 more
core   +1 more source

Efficient NiIr alloy catalyst for selective hydrogenation of benzonitrile, crotonaldehyde and benzylideneacetone

open access: yesCatalysis Communications, 2023
SiO2-supported NiIr alloy acted as an effective heterogeneous catalyst for the hydrogenation of benzonitrile, crotonaldehyde and benzylideneacetone, showing much higher activity than monometallic Ni/SiO2 and Ir/SiO2 catalysts and superior selectivity to ...
Jia-qi Bai   +10 more
doaj   +1 more source

Synthetic and mechanistic investigations of iridium-catalysed imine hydrogenation [PDF]

open access: yes, 2013
Chiral amines occur as structural elements in many biologically active natural and unnatural products. In addition, they find applications as chiral auxiliaries, catalysts, and resolving agents.
Schramm, York
core   +1 more source

MIL‐100(Fe) Supported Pt−Co Nanoparticles as Active and Selective Heterogeneous Catalysts for Hydrogenation of 1,3‐Butadiene

open access: yesChemistryOpen, 2022
Superior catalytic performance for selective 1,3‐butadiene (1,3‐BD) hydrogenation can usually be achieved with supported bimetallic catalysts. In this work, Pt−Co nanoparticles and Pt nanoparticles supported on metal–organic framework MIL‐100(Fe ...
Prof. Lili Liu   +6 more
doaj   +1 more source

Selective Hydrogenation of the Carbonyls in Furfural and 5-Hydroxymethylfurfural Catalyzed by PtNi Alloy Supported on SBA-15 in Aqueous Solution Under Mild Conditions

open access: yesFrontiers in Chemistry, 2021
Valuable furfuryl alcohol (FFA) and 2,5-dihydroxymethylfuran (DHMF) could be produced by selective hydrogenation of biomass-derived furfural (FF) and 5-hydroxymethylfurfural (HMF) with high atom economy. In this study, SBA-15 (a kind of mesoporous silica
Ge Gao   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy