Oxidation, long-term

Handling, Storage, and Precautions no special precautions have been noted in the literature. The free base is a clear distillable liquid that should be stored under an inert atmosphere to prevent air oxidation. Long term storage may lead to some coloration of the material. 

Ketone Body Oxidation Long-term starvation or ketoacidosis. 

McConnell, E. E., and J. A. Swenberg. 1994. Review of styrene and styrene oxide long-term animal studies. Crit. Rev. Toxicol. (24 Suppl) 549-55. 

Research on the SCILL concept is still at the beginning, and more studies are needed for a better understanding, and for the practical use of the concept. The directions for future research are the investigation of other (parallel and consecutive) reactions including oxidations. Long-term tests on the thermal stability and the mass loss by evaporation of the IL layer (in case of gas-phase reactions) are also needed, and finally the catalyst-IL interactions and the influence of the IL loading on the internal surface, pore diameter, and layer thickness should be analyzed in further detail. 

Table 2.16 provides an overview of Important testing criteria for evaluating thermal oxidative degradation [194]. Oven aging is the most important procedure used in the standard test methods (Table 2.27, Section 2.7.1.4) for evaluating thermal-oxidative long-term resistance.

Ion implantation has also been used for the creation of novel catalyticaHy active materials. Ruthenium oxide is used as an electrode for chlorine production because of its superior corrosion resistance. Platinum was implanted in mthenium oxide and the performance of the catalyst tested with respect to the oxidation of formic acid and methanol (fuel ceU reactions) (131). The implantation of platinum produced of which a catalyticaHy active electrode, the performance of which is superior to both pure and smooth platinum. It also has good long-term stabiHty. The most interesting finding, however, is the complete inactivity of the electrode for the methanol oxidation. 

Ethylene oxide catalyst research is expensive and time-consuming because of the need to break in and stabilize the catalyst before rehable data can be collected. Computer controlled tubular microreactors containing as Httle as 5 g of catalyst can be used for assessment of a catalyst s initial performance and for long-term life studies, but moving basket reactors of the Berty (77) or Carberry (78) type are much better suited to kinetic studies. 

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