53 research outputs found
Aerobic Oxidation of Alcohols in Carbon Dioxide with Silica-Supported Ionic Liquids Doped with Perruthenate
The replacement of toxic CrVI for O2 and of chlorinated solvents for supercritical carbon dioxide (or ionic liquids) in the oxidation of alcohols remains hindered by the low selectivity and activity of the current heterogeneous catalysts. Using an integrated approach that combines sol–gel entrapped perruthenate as aerobic catalyst, an encapsulated ionic liquid as solubility promoter, and scCO2 as the reaction solvent, we have developed a system capable of rapidly converting different alcohols into carbonyl compounds with complete selectivity, including substrates which are otherwise difficult to oxidise. The methodology is generally applicable and may easily be extended to other waste-free, catalytic syntheses of fine chemicals
Preparation and Anti-Corrosive Properties of Cerium Oxide Conversion Coatings on Steel X52
Atropo- and Diastereoselective Construction of Tetracyclic Biphenylazepinium Salts Derived from Aminoalcohols: Use as Catalysts in Enantioselective Asymmetric Epoxidation
Bovine meat and bone meal is an economically viable alternative in quail feeding in the initial phase
NĂveis de lisina digestĂvel com dois balanços eletrolĂticos para pintos de corte na fase inicial, de 1 a 21 dias de idade
Digestible lysine levels obtained by two methods of formulation of diets for 22-to-42-day-old broilers
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