Results 191 to 200 of about 1,834 (264)

Size Effects of TiO2 Nanoparticles as Supports for W‐ and NiW‐Catalysts for Selective 3‐Methylthiophene Desulfurization

open access: yesChemCatChem, EarlyView.
Rounded TiO2 nanoparticles we sucesfully synthesized with modulated sizes from 109 to 22 nm. We observed the WS2 and NiWS active phases forming parallel slabs to the surface. The presence of Ni helped W to be better dispersed, especially on the smallest nanoparticles, which resulted in the highest activity detected among the series.
Eduardo D. Gutiérrez‐López   +7 more
wiley   +1 more source

Tetraethylammonium Cation Activates Fe for Selective Electroreduction of CO2 to Oxalate

open access: yesChemElectroChem, Volume 12, Issue 15, July 24, 2025.
A tetraethylammonium‐activated iron‐based electrode drives efficient CO2 utilization in a non‐aqueous electrochemical system for scalable, high‐value commodity chemical synthesis. The strong binding energy of CO on iron surfaces has rendered Fe electrodes as poor electrochemical CO2 reduction (eCO2R) catalysts, predominantly producing hydrogen.
Rohan Sartape   +9 more
wiley   +1 more source

Study on Phosphorus Compound/Catechol‐Catalyzed Dehydrative Amidation and Its Database Development for Machine Learning

open access: yesChemistry – A European Journal, EarlyView.
A novel phosphorus‐based catalytic system for the direct amidation of carboxylic acids with amines has been developed. The efficiency of the phosphorus catalysis is substantially enhanced using catechol derivatives as additives. A vault of experimental data obtained this time was complemented with ML models, which allowed capturing the intricate ...
Taiki Nagano   +6 more
wiley   +1 more source

Advances in Copper and Nickel C─N and C─O Cross‐Couplings of (Hetero)Aryl Chlorides Enabled by Ancillary Ligand Development

open access: yesChemistry – A European Journal, Volume 31, Issue 41, July 22, 2025.
Important recent advances in ancillary ligand design that enable superlative copper or nickel catalyst systems for C─N or C─O cross‐couplings of inexpensive and abundant (hetero)aryl chloride electrophiles under operationally simple thermal conditions are discussed. Abstract The evolution of palladium‐catalyzed C─N and C─O cross‐coupling chemistry into
Kathleen M. Morrison, Mark Stradiotto
wiley   +1 more source

Weighing risks against GHG reduction benefits in emerging green technologies

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Green technologies represent promising strategies for mitigating carbon emissions and combating global warming. However, their implementation in civil and industrial applications is not without risks, as intrinsic uncertainties and latent safety concerns can threaten their effective deployment.
Federica Tamburini   +3 more
wiley   +1 more source

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