The role played by the polymeric matrix structure in activation of polyacrylamide hydrogels containing Ni(II) for oxidation of the sulfide anion by molecular oxygen
Mp. Zhilenko et al., The role played by the polymeric matrix structure in activation of polyacrylamide hydrogels containing Ni(II) for oxidation of the sulfide anion by molecular oxygen, RUSS J PH C, 74(8), 2000, pp. 1271-1275
The oxidation of the sulfide anion by oxygen was studied in the presence of
nonhydrolyzed and hydrolyzed hydrogels containing Ni(II) and solutions of
NiCl2. An initial increase in the absolute catalytic activity (event/s per
Ni atom) by 80-140% was only observed for gel systems. The effect and its d
ependence on the concentration of the active phase and the stability of cat
alyst operation and catalyst aging are influenced by the size (volume) of t
he cell of the three-dimensional polymeric network, which depends on the li
miting swellability in syneresis.