According to Elovich's kinetic model, it is concluded that the controlling mechanism for the adsorption of Hg(II) onto the studied materials corresponds to a second-order reaction
with an heterogeneous adsorbent surface and different activation energies.
TGA data were represented by Model 2, which is the second-order reaction, for each temperature interval.
Set of reaction models applied to describe thermal decomposition in solid  Model Mechanism 1 First-order reaction (F1) 2 Second-order reaction (F2) 3 Third-order reaction (F3) 4 Power law (P2) 5 Power law (P3) 6 Power law (P4) 7 One-dimensional diffusion (D1) 8 Contracting area (R2) 9 Contracting volume (R3) 10 Two-dimensional diffusion (D2) 11 Three-dimensional diffusion (D3) 12 Ginstling-Brounshtein (D4) 13 Avarami-Erofe'ev (A2) 14 Avarami-Erofe'ev (A3) 15 Avarami-Erofe'ev (A4) Model f(x) 1 (1 - x) 2 [(1 - x).
Assumption about the second-order reaction
kinetics led to plotting the quantity ln(x/[T.
The N3 compound displayed second-order reaction
kinetics with an [E.
2] experimentally for a vinyl-ester resin system while assuming a second-order reaction
, m + n = 2.
From Table 3, it is observed that the order of the crosslinking reaction (n) is approximately equal to two irrespective of scan rate, indicating that it is a second-order reaction
Imidization kinetics has been modeled as both first and second-order reactions