Generation of hydrogen by hydroheterogeneous compositions based on aluminum and alkali metals

The process of hydrogen formation and the associated risk combustion explosion is a complex problem concerned with radiation safety nuclear reactors. Lithium, potassium sodium hydroxides are used in VVER reactors as corrective additives for keeping potential water coolant boric acid at controlled level 5.8 to 10.3. In investigating interaction aqueous solutions above aluminum, most chemically active these lithium hydroxide; this reaction proceeds formed high rate room temperature (in an exothermic mode). processes generation hydroheterogeneous compositions proceed acceptable heating ~ 60 °C. kinetics depends way on content acid, namely, yield 1000 ml low concentration 0.01 0.05 g/l, there no 0.6 g/l. According quality standards, hot state VVER-1000 unit or reactor minimum power level, total alkali metals about 1 mg/dm 3 , i.e. two three orders magnitude less investigated compositions. discovery influence metal participation structural materials based example aluminum makes it possible suggest that contained small amount can also take part minor amounts. such needs be taken into account during long-term operation reactors, accidents incidents NPPs