Oscillatory bromate-oxalic acid-Ce-acetone-sulfuric acid reaction, in CSTR

Oscillatory Bromate-Oxalic Acid-Ce-Acetone-Sulfuric Acid Reaction, in CSTR

São relatadas, pela primeira vez, a observação de oscilações periódicas, em reator agitado de fluxo contínuo (CSTR), para o sistema bromato-ácido oxálico-Ce(IV)-acetona-ácido sulfúrico. Identificou-se que a reação entre Ce(IV) e a acetona, até então não descrita na literatura e que ocorre antes dos reagentes serem adicionados ao reator, é um fator decisivo para o aparecimento de oscilações regu...

The effect of sulfuric acid on pore initiation in anodic alumina formed in oxalic acid

In this work, a tracer study on pore initiation in anodic alumina in oxalic acid was performed. Effects of some experimental parameters such as applied electrical potential, electrolyte composition and heat pretreatment were evaluated. Electrochemical and morphological experiments were performed using potentiostatic anodizing and scanning electron microscopy (SEM) techniques, respectively. Effe...

Oscillatory Oxidation of Malonic Acid by Bromate

In earlier communications we described the re­ sults of an investigation of the main products of the oscillating oxidation of malonic acid by bromate 1. The products were identified as monobromomalonic acid, dibromoacetic acid and C02 . Also, the relative quantities of the two organic products were deter­ mined. Current hypothesis on the mechanism of the reac­ tion pathway under oscillating con...

the effect of sulfuric acid on pore initiation in anodic alumina formed in oxalic acid

in this work, a tracer study on pore initiation in anodic alumina in oxalic acid was performed. effects of some experimental parameters such as applied electrical potential, electrolyte composition and heat pretreatment were evaluated. electrochemical and morphological experiments were performed using potentiostatic anodizing and scanning electron microscopy (sem) techniques, respectively. effe...

Oxalic acid