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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, ...
Reações ácido-base: conceito, representação e generalização a partir das energias envolvidas nas transformações
(Sociedade Brasileira de Química, 2014)
Expression of sialic acids and other nonulosonic acids in Leptospira
(BioMed Central, 2012)
Background: Sialic acids are negatively charged nine carbon backbone sugars expressed on mammalian cell surfaces. Sialic acids are part of a larger family of nonulosonic acid (NulO) molecules that includes pseudaminic and ...
Scrutiny of the HSAB principle in some representative acid-base reactions
(American Chemical Society, 2001)
A thorough quantitative analysis of the HSAB principle is performed. Complex formation reactions of a typical soft acid, Ag+, and typical hard acid, HF, with the bases XH3 (X = N, P, As) are studied using the DFT/B3LYP ...
Ionically Tagged Iron Complex-Catalyzed Epoxidation of Olefins in Imidazolium-Based Ionic Liquids
(Wiley-v C H Verlag GmbhWeinheimAlemanha, 2012)
Highly selective acetalization of glycerol with acetone to solketal over acidic carbon-based catalysts from biodiesel waste
(Elsevier Sci Ltd, 2016)
The glycerol acetalization reaction in the presence of acetone was evaluated using acidic carbon-based catalysts from biodiesel waste as catalysts. Acidic carbon-based catalysts were prepared with different glycerin: ...
Effect Of The Acid-Base Properties Of Mg-Al Mixed Oxides On The Catalyst Deactivation During Aldol Condensation Reactions
(Plapiqui, 2003-12)
The effect of chemical composition of Mg-Al mixed oxides on both the acid-base properties and the deactivation process during the gas phase self-condensation of acetone was studied. The activity and selectivity for acetone ...
Formation of poly(propylene)-based biocomposite films and their use in the attachment of methylene blue
(Wiley VCH Verlag, 2010-08)
Biocomposite PP-g-PAAc-CS films based on PP were generated and utilized as support of methylene blue, a thiazidic dye. Using a photograft polymerization of acrylic acid, the PP film was functionalized with carboxyl groups ...
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 ...