The catalytic oxidation of phenol over CuZSM-12 (SAR = 200) has been studied using a semi-batch slurry reactor at temperatures of 110, 120 and 130oC, and acidic neutral and basic pH. At 130oC, the phenol undergoes total conversion to carbon dioxide and water in 1.5 h. The kinetic parameters were evaluated using a modified homogeneous heterogeneous model for the experimental data. Using this modified model, the activation energy for the catalytic oxidation process was ca. 90 kJ mol-1.
Rodrigues, Luiz Erlon Araujo; Carvalho, Antônio A. V. F.; Azevedo, Antônio L. M.; Cruz, Cecília Beatriz Bittencourt Viana; Maia, Antônio Wanderley da Conceição(Fundação Odontológica de Ribeirão Preto, 2003-06)
Copper/aluminum alloys are largely utilized in odontological restorations because they are less expensive than gold or platinum. However, tarnishing and important corrosion in intrabuccal prostheses made with copper/aluminum ...
Macedo, Márcio Cerqueira de F.; Apolinário Júnior, Antonio Lopes; Souza, Antonio Carlos dos Santos; Giraldi, Gilson Antônio(IEEEBrasil, 2014-10-02)
In general, augmented reality (AR) applications use polygonal models to augment a real scene. However, most of the medical applications have volumetric data to be visualized. Therefore, it is desirable to the medical AR ...
Macedo, Márcio Cerqueira de Farias; Apolinário Júnior, Antonio Lopes; Souza, Antonio Carlos dos Santos; Giraldi, Gilson Antônio(SBCBrasil, 2014)
To provide on-patient medical data visualization, a medical augmented reality environment must support volume rendering, accurate tracking, real-time performance and high visual quality in the final rendering. Another ...
