in water T=50 - 450°C; 18 h; Concentration;

in water T=50 - 450°C; 18 h;

in water T=50 - 550°C; 18 h;

in water T=80 - 450°C; pH=1.6; Concentration;

in neat (no solvent) Kinetics; byproducts: CO; Ar atmosphere; (KPO3)n placed on graphite boat in electric furnace at 1000°C; gas phase condensed in receivers; elem., IR and X-ray diffraction anal.;