Results 11 to 20 of about 758,902 (306)
Scientific Reports, 2022 In this study, we reported the ammonium metavanadate (NH4VO3) as an efficient, cost-effective, and mild catalyst for the synthesis of substituted pyridines via a one-pot pseudo four-component reaction.
Jamal Rahimi +6 more
doaj +1 more source
Recovery of platinum group metals from spent automotive catalysts: A review
Cleaner Engineering and Technology, 2021 In the last decades, a worldwide investment in the recovery or substitution of platinum group metals (PGMs) has been financed. PGMs have been classified as critical raw materials (CRMs), thus a circular economy model should be implemented for their ...
Iakovos Yakoumis +3 more
doaj +1 more source
Communications Biology, 2022 A magnetic drug delivery system containing polyvinyl alcohol, gold nanoparticles, and sortilin antibody followed by the plasmonic photothermal heating strategy for the controlled drug release is proposed, with use in ovarian cancer demonstrated.
Reza Taheri-Ledari +4 more
doaj +1 more source
, 2009 The use of N-heterocyclic carbenes as catalysts for organic transformations has received increased attention in the past 10 years. A discussion of catalyst development and nucleophilic characteristics precedes a description of recent advancements and new reactions using N-heterocyclic carbenes in catalysis.
Jennifer L, Moore, Tomislav, Rovis
openaire +2 more sources
Solvent effects on Grubbs’ pre-catalyst initiation rates [PDF]
, 2013 Initiation rates for Grubbs and Grubbs-Hoveyda second generation pre-catalysts have been measured accurately in a range of solvents. Solvatochromic fitting reveals different dependencies on key solvent parameters for the two pre-catalysts, consistent ...
Abboud +33 more
core +1 more source
Scientific Reports, 2023 An effective method for synthesizing acridinedione derivatives using a xanthan gum (XG), Thiacalix[4]arene (TC4A), and iron oxide nanoparticles (IONP) have been employed to construct a stable composition, which is named Thiacalix[4]arene-Xanthan Gum ...
Fereshte Hassanzadeh-Afruzi +7 more
doaj +1 more source
Facile Synthesis of Effcient and Selective Ruthenium Olefin Metathesis Catalysts with Sulfonate and Phosphate Ligands [PDF]
, 2010 A series of novel, air-stable ruthenium NHC catalysts with sulfonate and phosphate anions have been prepared easily in one pot at high yields using commercially available precursors.
Grubbs, Robert H., Teo, Peili
core +1 more source
Hydrogen production by methanol steam reforming on NiSn/MgO-Al 2O3 catalysts: The role of MgO addition [PDF]
, 2011 The effect of the magnesia loading on the surface structure and catalytic properties of NiSn/MgO-Al2O3 catalysts for hydrogen production by methanol steam reforming has been investigated. The catalysts have been obtained by impregnation of γ-Al2O3 by the
Bobadilla Baladrón, Luis Francisco +7 more
core +1 more source
Well-defined silica-supported olefin metathesis catalysts [PDF]
, 2009 Two triethoxysilyl-functionalized N-heterocyclic carbene ligands have been synthesized and used to prepare the corresponding second-generation ruthenium olefin metathesis catalysts.
Allen, Daryl P. +2 more
core +1 more source
Unraveling sulfur chemistry in interstellar carbon oxide ices
Nature Communications, 2022 The authors report photolytic H atom transfer reactions of HOSO• in astronomical CO & CO2 ices, forming reactive acyl radicals & molecular complexes with SO & SO2.
Xiaolong Li +7 more
doaj +1 more source