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Mostrando ítems 1-10 de 31
Síntesis catalítica de intermediarios de química fina mediante alquilación para-selectiva
(2007-08-03)
Se estudia la síntesis de p-cresol mediante alquilación de fenol con metanol en fase gas empleando catalizadores sólidos ácidos. Actualmente, el p-cresol se obtiene por fusión alcalina de toluensulfonatos requieriendo de ...
The deleterious metabolic and genotoxic effects of the bacterial metabolite p-cresol on colonic epithelial cells
(Elsevier, 2015)
p-Cresol that is produced by the intestinal microbiota horn the amino acid tyrosine is found at millimolar concentrations in the human feces. The effects of this metabolite On colonic epithelial cells were tested in this ...
Obtención de productos valiosos por alquilación selectiva de m-cresol
(2015-03-18)
El objetivo de esta tesis fue desarrollar un nuevo proceso para la síntesis de xilenoles y trimetilfenoles que disminuya la contaminación ambiental y resulte económicamente viable.
Se estudió la alquilación de m-cresol ...
Phenol methylation on acid catalysts: Study of the catalyst deactivation kinetics and mechanism
(Elsevier Science, 2014-01)
The kinetics and mechanism of coke formation and catalyst deactivation during the synthesis of cresols from phenol methylation were investigated on SiO2–Al2O3, tungstophosphoric acid (HPA) supported on silica, and zeolites ...
Obtención de óxidos mixtos a partir de materiales tipo hidrotalcita: aplicación a diferentes procesos industriales y ambientales
(2010-09-29)
RESUMEN: En este trabajo de tesis se presentan los resultados obtenidos de la síntesis de materiales tipo hidrotalcitas ZnAl, ZnAlFe y Mg Al mediante la técnica de coprecipitación con urea como agente precipitante y su ...
p-Methoxyphenol: A potent and effective scavenger for solid-phase peptide synthesis
(2020)
During the final step of t-Boc/Bzl, solid-phase peptide synthesis (SPPS)-protecting groups from amino acids (aa) side chains must be removed from the target peptides during cleavage from the solid support. These reaction ...
p-Methoxyphenol: A potent and effective scavenger for solid-phase peptide synthesis
During the final step of t-Boc/Bzl, solid-phase peptide synthesis (SPPS)-protecting groups from amino acids (aa) side chains must be removed from the target peptides during cleavage from the solid support. These reaction ...
Synthesis of silver nanoparticles in surfactant-free light-cured methacrylate resins
(Elsevier, 2014-11-16)
The present study describes a simple method for preparing stable, highly dispersed spherical silver nanoparticles (Ag NPs) in surfactant-free methacrylate resins. Colloidal dispersions of silver in methacrylate resins were ...