Research Article
Preparation of CoFe2O4/SiO2 Nanocomposites at Low Temperatures Using Short Chain Diols
Table 4
Thermodynamic parameters at different temperatures for CoFe2O4 and Co2SiO4.
| (°C) | (cal/mol·K) | Δ (kcal/mol) | (cal/mol·K) | Δ (kcal/mol) | CoFe2O4 | Co2SiO4 | CoFe2O4 | Co2SiO4 | CoFe2O4 | Co2SiO4 | CoFe2O4 | Co2SiO4 |
| 25 | 1312 | 1348 | −339 | −343 | 38.8 | 47.2 | −351 | −358 | 100 | 1736 | 1785 | −187 | −187 | 474 | 495 | −376 | −385 | 200 | 2151 | 2221 | 8.24 | 13.5 | 907 | 940 | −445 | −457 | 300 | 2584 | 2657 | 245 | 257 | 1339 | 1384 | −558 | −573 | 400 | 3008 | 3093 | 525 | 545 | 1769 | 1826 | −713 | −733 | 500 | 3432 | 3529 | 847 | 876 | 2198 | 2268 | −911 | −938 | 600 | 3856 | 3965 | 1211 | 1251 | 2627 | 2708 | −1153 | −1187 | 700 | 4280 | 4401 | 1618 | 1669 | 3055 | 3149 | −1437 | −1480 | 800 | 4704 | 4837 | 2067 | 2131 | 3483 | 3589 | −1764 | −1816 | 900 | 5128 | 5273 | 2559 | 2636 | 3910 | 4028 | −2133 | −2197 |
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