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Um panorama da catálise no Brasil nos últimos 40 anos
(Sociedade Brasileira de Química, 2017-07)
In this work, the catalysis area in Brazil is analyzed from several perspectives between 1977 and 2017. The conceptual aspects and the area at world level are briefly introduced. A history of the main organizational ...
Biolubricant Production from Stearic Acid and Residual Secondary Alcohols: System and Reaction Design for Lipase-Catalyzed Batch and Continuous Processes
(Springer, 2021-05-19)
Six lipases were immobilized on a styrene-divinylbenzene support and evaluated on the batch esterification reaction of stearic acid with fusel oil. After a screening design, the two most appropriate lipases were assayed ...
Recent Advances in Using Niobium Compounds as Catalysts in Organic Chemistry
(Bentham Science Publ Ltd, 2015-01-01)
Niobium is not found in nature in its free form, but usually in the form of oxides and usually with the tantalum element. The largest niobium reserves are in Brazil. The use of niobium compounds in organic synthesis has ...
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 ...
Three-dimensional catalysis and the efficient bioelectrocatalysis beyond surface chemistry
(2021-09-01)
The exceptional catalysis for the oxygen reduction reaction (ORR) of bilirubin oxidase (BOD) encouraged us to reevaluate the existing catalytic models. Experimental evidence of the electron-transfer reaction's dependence ...
Solvent free esterification reactions using Lewis acids in solid phase catalysis
(Elsevier B.V., 2006-10-04)
A clean, efficient and fast method for esterification reactions for sterically (biodiesels) or otherwise inactive (aromatic) precursors was developed, using catalysts supported in a solid phase under solvent free conditions, ...
Solvent free esterification reactions using Lewis acids in solid phase catalysis
(Elsevier B.V., 2006-10-04)
A clean, efficient and fast method for esterification reactions for sterically (biodiesels) or otherwise inactive (aromatic) precursors was developed, using catalysts supported in a solid phase under solvent free conditions, ...