Chemical modification and NaOH, P2O5, PCl5, and AlCl3 admixture effects onthe rate of oxidation of fullerene C-60 by molecular oxygen

Sodium hydroxide catalytically accelerated and P2O5, PCl5, and AlCl3 strong ly inhibited oxidation of fullerene C-60 by molecular oxygen. Acid admixtur es deposited by vaporization at 573 K on crystalline fullerene increased th e temperature of the onset of oxidation by 60-80 K. Hydroxylation of fuller ene by dilute H2SO4 With the formation of C-60(OH)(x) had virtually no effe ct on the rate of its oxidation, whereas hydrogenation with hydrogen at 393 K to C-60(H)(y) sharply decelerated the reaction at temperatures up to 753 K and accelerated it at higher temperatures the apparent activation energy (578 kJ/mol, i.e., close to the dissociation energy of aromatic C-C bonds) , however, remained constant.