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Solventless amide synthesis catalyzed by biogenic CaCO3 materials
(American Chemical Society, 2020-08-17)
Biogenic carbonates were studied as catalysts in this work for the direct synthesis of amides under solvent-free conditions. Solids were synthesized by microbial coprecipitation of CaCl2 and Ni salts and Cu and Fe salts. ...
Pt and Pd on activated carbon for oxidation of 5-hydr oxymethylfurfural to 2,5-furandicarboxylic acid
(Universidad del ValleColombia, 2017-07-01)
(Eng) In this work the transformation in liquid phase of 5-hydroxymethylfurfural (5-HMF) to 2,5-furandicarboxylic acid was studied with the use of Pt and Pd catalysts supported on activated carbon with the presence of NaOH ...
Parâmetros bioquímicos em guppy (Poecilia vivipara) e jundiá (Rhamdia quelen) expostos ao zinco
(Universidade Federal de Santa MariaBrasilBioquímicaUFSMPrograma de Pós-Graduação em Ciências Biológicas: Bioquímica ToxicológicaCentro de Ciências Naturais e Exatas, 2019-02-27)
Anthropogenic activities such as agriculture, urbanization and mining may increase the contamination of the aquatic environment by metals. Zinc (Zn) is an essential mineral that is involved in many biological processes. ...
Óxidos de Metales de Transición como catalizadores para la oxidación total de Compuestos Orgánicos Volátiles (COVs) en fase gaseosa
(Bogotá - Ciencias - Maestría en Ciencias - QuímicaDepartamento de QuímicaUniversidad Nacional de Colombia - Sede Bogotá, 2019-11-30)
En general los óxidos de metales de transición (OMT) se posicionan como materiales con actividad catalítica apreciable en la oxidación total de compuestos orgánicos volátiles (COVs), con altos porcentajes de conversión y ...
Estudio del efecto de los parámetros de síntesis sobre las propiedades físicoquímicas y fotocatalíticas de sistemas Pt-F-TiO2
(Universidad Pedagógica y Tecnológica de ColombiaFacultad de Ciencias. Escuela de posgrados. Maestría en Química, 2018)
Currently, Titanium dioxide (TiO2) is one of the most used materials in different fields, such as: materials engineering, environment and electronics. This material has attracted the attention of hundreds of chemists, ...