A KINETIC-STUDY OF A VANADIUM(II)-MAGNESIUM HYDROXIDE SYSTEM

The kinetics of the molecular nitrogen reduction of hydrazine by vanad ium(II)-magnesium hydroxide is studied at P(N)2 = 0.506 - 3.54 MPa and 258 - 284 K. The heat (-DELTAH = 17 kJ/mol) and entropy of the format ion of the nitrogen complex (-DELTAS = 32 J mol-1 K-1) and the activat ion energy of the N2H4 formation (35 kJ/mol) are determined. The concl usion is made that the reaction occurs with the participation of a tet ranuclear cluster of V2+ ions in the cationic layer of the primary par ticle of the mixed hydroxide Mg(OH)2-V(OH)2.