Oxidation sulfur dioxide

1 Sulfur dioxide oxidation. The first use of SEP to study catalytic processes was made by Vayenas and Saltsburg. Vayenas and Saltsburg studied sulfur dioxide oxidation over platinum, silver and gold electrodes.39 The oxygen activity 

Sulfur dioxide can be oxidized catalytically in an aqueous environment. The sample case introduces a catalytic oxidation process of SO2 in the liquid phase over an active carbon 

Effectiveness factor for outer mass transfer resistance, r)e = 

Higher-order reactions iterative solution of [A] is recommended. 

---

Catalytic Sulfur Dioxide Oxidation, Sulfuric acid [7664-93-9] is the largest volume chemical manufactured woddwide and is produced by... 

Reproducible measurements of absolute activity for sulfur dioxide oxidation catalysts are very difficult to obtain for a number of reasons, including the fact that the reaction is extremely fast. In addition, there are differences in techniques and reporting methods used by the various workers. Pulse microreactors have been used to study quantities of these catalysts as small as 500 mg (83). 

Modeling of Chemioal Kinetios and Reaotor Design SULFUR DIOXIDE OXIDATION... 

Komiyama, H., and Smith J. M., Sulfur dioxide oxidation in slurries of activated carbon. AIChEJ. 21, 664-676 (1975). 

It is partly the fault of statistics that experimenters have misconstrued the value of the number and precision of data points relative to the value of the location of the points. The importance of the location of the data in the model specification stage can be seen from Fig. 1, which represents literature data (M3) on sulfur dioxide oxidation. The dashed and solid lines represent the predicted rates of two rival models, and the points are the results of two series of experimental runs. It can be seen that neither a greater number of experimental points nor data of greater precision will be of major assistance in discriminating between the two rival models, if data are restricted to the total pressure range from 2 to 10 atm. These data simply do not place the models in jeopardy, as would data below 2 atm and greater than 10 atm total pressure. This is presumably the problem in the water-gas shift reaction, which is classical in terms of the number of models proposed, each of which adequately represent given sets of data. 

As mentioned before, heterogeneous sulfur dioxide oxidation reactions... 

E. HamUton, personal communication), Calvert estimated sulfur dioxide oxidation rates by hydroperoxy, methylperoxy, hydroxyl, and methoxy radicals to be 0.85, 0.16, 0.23-1.4, and 0.48%/h, respectively. 

Yamamoto, K., M. Seki, and K. Kawazoe. Effect of sulfuric acid accumulation on the rate of sulfur dioxide oxidation on activated carbon surface. Nippon Kaguku Kaiski 7 1268-2179, 1973. (in Japanese, summary in English)... 

Peter L. Silverston, Li Chengyue, Yuan Wei-Kang, Application of Periodic Operation to Sulfur Dioxide Oxidation... 

Barbaray, B., J.-P. Contour, and G. Mouvier, Sulfur Dioxide Oxidation over Atmospheric Aerosol-X-Ray Photoelectron Spectra of Sulfur Dioxide Adsorbed on V205 and Carbon, Atmos. Environ., 11, 351-356(1977). 

Stockwell, W. R., The Effect of Gas-Phase Chemistry on Aqueous-Phase Sulfur Dioxide Oxidation Rates, J. Atmos. Chem., 19, 317-329 (1994). 

The important commercial process of sulfur dioxide oxidation has been studied by a number of investigators. A set of steps that has been proposed for both platinum and vanadium oxide-based catalysis by Horiuti (7) for the overall reaction 2SOz + 02 2SOs is as follows ... 

---