6 documents found, page 1 of 1

Decolorization and degradation of methylene blue by photo-Fenton reaction under...

In this work, an iron-rich bentonite was thermally modified at 200 oC and posteriorly used as a heterogeneous catalyst in the decolorization and degradation of methylene blue dye (MB) by photo-Fenton reaction under visible irradiation. The variables such as catalyst concentration and pH were investigated in the reaction system to detect the optimal decolorization conditions using the response surface methodolog...

Direct decomposition of methane over Ni catalyst supported in magnesium aluminate.

In this paper, the results obtained in the methane decomposition reaction promoted by a Ni catalyst supported on MgAl2O4 spinel are presented. The textural properties of the catalyst were investigated by X-ray diffraction (XRD), N2 adsorption/desorption isotherms (BET and BJH methods), thermogravimetric (TGA) and temperature-programmed reduction (TPR) analysis. The influence of the operating conditions employed...

Methane conversion to hydrogen and nanotubes on Pt/Ni catalysts supported over ...

Methane decomposition is an endothermic process. Therefore a high temperature increases the methane conversion and improves the carbon accumulation. Nevertheless at high temperature conditions a faster deactivation of catalyst is generally observed. To keep the stability of the catalyst, lower reaction temperatures can be used as well as methane dilution but the catalytic activity is lowered. The aim of the pre...

Remediation of solid matrix containing anthracene and phenanthrene by permangan...

Estudos da decomposição direta do monóxido de nitrogênio sobre zeólitas ZSM-5 m...

Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico.

Preparação e caracterização de bentonitas modificadas e sua utilização na clari...

Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Química; Duas amostras de argilas bentoníticas argentinas de composições mineralógicas diferentes foram ativadas com ácidos clorídrico e sulfúrico, em diferentes concentrações e tempos, com o intuito de se avaliar a influência de suas propriedades estruturais, decorrentes do tratamento ácido, s...