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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 ...
Heterogeneous catalysis afford biodiesel of babassu, castor oil and blends
(2013-05-06)
This work describes the preparation of babassu, castor oil biodiesel and mixtures in various proportions of these oils, using alkaline compounds of strontium (SrCO3 + SrO + Sr (OH)2) as heterogeneous catalysts. The mixture ...
Heterogeneous catalysis afford biodiesel of babassu, castor oil and blends
(2013-05-06)
This work describes the preparation of babassu, castor oil biodiesel and mixtures in various proportions of these oils, using alkaline compounds of strontium (SrCO3 + SrO + Sr (OH)2) as heterogeneous catalysts. The mixture ...
Lipase-oxovanadium heterogeneous catalysis system: a robust protocol for the dynamic kinetic resolution of sec-alcohols
(2020-05-20)
Herein, we present a robust and eco-friendly dynamic kinetic resolution (DKR) protocol for secondary alcohols using a combined heterogeneous catalytic CAL−B/VOSO4 system at 50 °C in the relatively green solvent heptane. ...
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 ...
Analysis of catalytic potential of a new heterogeneous catalyst in the preparation of biodiesel
(2018-01-01)
In this work was investigated the catalytic potential of a new heterogeneous catalyst of stoichiometry Ca0.5K0.5TiCu0.25O3, with double perovskite structure, in the preparation of biodiesel via ethylic route. The catalyst ...
Modificação de zeólitas para uso em catáliseModifying zeolites for use in catalysis
(Sociedade Brasileira de Química, 2001)
Ultrasound and heterogenous catalysis assisted lenght reduction of Neisseria meningitidis serogroup C capsular polyssaccharide
(Fiocruz/Instituto de Tecnologia em Imunobiológicos, 2018)
Convenient synthesis of ketal derivatives from cubebin using amberlite as heterogeneous catalyst
(Springer, 2015-01-01)
Eleven ketal derivatives were prepared from the natural product cubebin using Amberlite IR-120AR as heterogeneous catalyst and ROH as the source of the alkyl group.