2.3. Experimental investigation of alkaline hydrogen peroxide solutions

Due to the decomposition of hydrogen peroxide, laboratory simulation of the alkaline hydrogen peroxide environment for investigation is difficult, and special large scale instrumentation is needed. An appropriate research system is presented in Fig. 1. The desired chemical environment is simulated to the autoclave to which hydrogen peroxide itself is fed with a pipe pump from a separated vessel. Controlling the concentration of hydrogen peroxide is carried out by regulating revolutions of the pipe pump. Electrodes and wires can practically be fed through the lid by using natural rubber o-ring gaskets or screws through which a hole has been drilled.

The results of chapters 3 and 4 of this study, dealing with the properties of metal chelates and the corrosion of titanium, are based on simulation experiments using the recirculation system described in Fig. 1. The detailed experimental procedures are documented in articles [I-V].