| Titre : | Simple synthesis, magnetic properties, and nonisothermal decomposition kinetics of Fe(H2PO4)2·2H2O (2008) |
| Auteurs : | Banjong Boonchom, Éditeur scientifique ; Chanaiporn Danvirutai, Éditeur scientifique ; Sujittra Youngme, Éditeur scientifique |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 47 N°20, Octobre 2008) |
| Article en page(s) : | P. 7642-7647 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Iron metal Phosphoric acid Magnetic Properties Fe(H2PO4)2·2H2O |
| Résumé : | Fe(H2PO4)2·2H2O was synthesized by a simple and cost-effective method using iron metal and phosphoric acid as starting chemicals. The thermal transformation products from the synthesized Fe(H2PO4)2·2H2O according to the thermal treatment at 423 and 673 K were found to be FeH2P2O7 and Fe2P4O12, respectively. The activation energies of decomposition reaction of Fe(H2PO4)2·2H2O were calculated through the isoconversional methods of Ozawa and Kissinger−Akahira−Sunose. The synthesized Fe(H2PO4)2·2H2O and its thermal transformation products were characterized by scanning electron microscopy, X-ray powder diffraction, and FTIR spectroscopy. Room-temperature magnetization results showed a ferromagnetic behavior of the Fe(H2PO4)2·2H2O and its thermal transformation products. The hysteresis loops were in the range −10000 Oe < H < +10000 Oe, and the strong specific magnetization values were in the range 32.25−96.28 emu/g at 10 kOe. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie800007j |
