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Simple synthesis, magnetic properties, and nonisothermal decomposition kinetics of Fe(H2PO4)2·2H2O / Banjong Boonchom in Industrial & engineering chemistry research, Vol. 47 N°20 (Octobre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N°20 (Octobre 2008) . - P. 7642-7647 Titre : Simple synthesis, magnetic properties, and nonisothermal decomposition kinetics of Fe(H2PO4)2·2H2O Type de document : texte imprimé Auteurs : Banjong Boonchom, Editeur scientifique ; Chanaiporn Danvirutai, Editeur scientifique ; Sujittra Youngme, Editeur scientifique Année de publication : 2008 Article en page(s) : P. 7642-7647 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : 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 [article] Simple synthesis, magnetic properties, and nonisothermal decomposition kinetics of Fe(H2PO4)2·2H2O [texte imprimé] / Banjong Boonchom, Editeur scientifique ; Chanaiporn Danvirutai, Editeur scientifique ; Sujittra Youngme, Editeur scientifique . - 2008 . - P. 7642-7647. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N°20 (Octobre 2008) . - P. 7642-7647 Mots-clés : 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