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Acid and base catalysts in the hybrid silica sol-gel process
(Academic Press IncSan DiegoEUA, 1997)
Preparation of bifunctional mesoporous silica nanoparticles by orthogonal click reactions and their application in cooperative catalysis
(Wiley-VCH VerlagWeinheim, 2012-12)
The synthesis of bifunctional mesoporous silica nanoparticles is described. Two chemically orthogonal functionalities are incorporated into mesoporous silica by co-condensation of tetraethoxysilane with two orthogonally ...
Intramolecular Catalysis of Phosphodiester Hydrolysis by Two Imidazoles
(Amer Chemical SocWashingtonEUA, 2010)
Esterificação metílica dos ácidos graxos oleico e esteárico empregando catálise em meio homogêneo e heterogêneo
(Universidade Tecnológica Federal do ParanáPato BrancoBrasilDepartamento Acadêmico de QuímicaQuímicaUTFPR, 2015-06-16)
The present work aimed to obtain monoesters alkyl esters (biodiesel) from the process of methyl esterification of fatty acids oleic and stearic acids with Catalysis in homogeneous and heterogeneous medium. For homogeneous ...
Fast and efficient synthesis of pyrano[3,2-c]quinolines catalyzed by niobium(V) chloride
(Georg Thieme Verlag Kg, 2008-08-01)
A highly efficient two-step method for the synthesis of pyranoquinoline derivatives from imino-Diels-Alder reactions between aldimines and 3,4-dihydro-2H-pyran using niobium(V) chloride as catalyst under mild conditions ...
Fast and efficient synthesis of pyrano[3,2-c]quinolines catalyzed by niobium(V) chloride
(Georg Thieme Verlag Kg, 2008-08-01)
A highly efficient two-step method for the synthesis of pyranoquinoline derivatives from imino-Diels-Alder reactions between aldimines and 3,4-dihydro-2H-pyran using niobium(V) chloride as catalyst under mild conditions ...
Uma perspectiva computacional sobre catálise enzimática
(Sociedade Brasileira de Química, 2008)
Enzymes are extremely efficient catalysts. Here, part of the mechanisms proposed to explain this catalytic power will be compared to quantitative experimental results and computer simulations. Influence of the enzymatic ...
Significant effects of the anion on the catalytic behaviour of sulfonic acid-functionalized ionic liquids in transesterification reactions – A combined electrochemical/catalytic study
(Elsevier, 2021-08)
This work studies the strong influence of the counterion on the performance of ionic liquids (ILs) with sulfonic acid-functionalized butyl-imidazolic bases as homogeneous acid catalysts. Through a voltammetric analysis, ...
Acid-base properties and active site requirements for elimination reactions on alkali-promoted MgO catalysts
(Elsevier Science, 2000-12)
Base-catalyzed elimination reactions were studied on MgO and alkali-modified MgO catalysts using 2-propanol as a probe reactant. The effect of the acid–base properties on the catalyst activity and selectivity was investigated ...