Region of formation of iron(III) hydrogen orthophosphate and structural changes in humid atmospheres.
スポンサーリンク
概要
- 論文の詳細を見る
The conditions of formation of the A and B forms of Fe(H<SUB>2</SUB>PO<SUB>4</SUB>)<SUB>3</SUB> by the reaction of Fe<SUB>2</SUB>O<SUB>3</SUB> and H<SUB>3</SUB>PO<SUB>4</SUB> have been established, and the thermal changes and structural changes in humid atmospheres investigated. 1) The A and B forms of Fe(H<SUB>2</SUB>PO<SUB>4</SUB>)<SUB>3</SUB> were readily formed by secondary heat treatment at 150 °C and 125 °C, respectively. 2) The forms of Fe(H<SUB>2</SUB>PO<SUB>4</SUB>)<SUB>3</SUB> were largely dependent on the heating rate in the primary heat treatment, <I>i.e.</I>, at a mean heating rate less than 7 °C/min the A form predominated, whereas above 60 °C/min the B form predominated. A heating rate between 7 and 60 °C/min gave a mixture of the A and B forms. 3) A close relationship between the water content of the primary product and yields of the A and B forms of Fe(H<SUB>2</SUB>PO<SUB>4</SUB>)<SUB>3</SUB> was found, <I>i.e.</I>, only the B form was obtained when the water content of the primary product was less than 7%, while the A form was readily formed when the water content was greater than 11%. 4) Heating the primary product under various degrees of humidity enabled the formation of Fe(H<SUB>2</SUB>PO<SUB>4</SUB>)<SUB>3</SUB> to be investigated. The effect of heating atmosphere was small except under vacuum. 5) The structural changes of the A and B forms of Fe(H<SUB>2</SUB>PO<SUB>4</SUB>)<SUB>3</SUB> under several humid atmospheres are summarized as follows:<BR>(<U>Remark: Graphics omitted.</U>)
- 公益社団法人 日本化学会の論文
著者
-
TSUHAKO Mitsutomo
Kobe Pharmaceutical University
-
MOTOOKA Itaru
Department of Chemical Science and Engineering, Faculty of Engineering, Kobe University
-
Matsuo Tsuneo
Kobe Women's College of Pharmacy
-
Kobayashi Masamitsu
Department of Chemistry, Faculty of General Education, Kobe University
-
Oyama Chinuyo
Kobe Women's College of Pharmacy
-
Oyama Chinuyo
Kobe Women's College of Pharmacy
関連論文
- Structure and Organic Gas-Adsorption Properties of Some Polyamine Intercalated α-Zirconium Phosphates
- Preparation and Chemical Properties of a Novel Layered Cerium(IV) Phosphate
- Intercalation of Methylene Blue into Layered Phosphate in the Presence of Butylamine and Function of Alkylamine in the Intercalation Reaction
- Intercalation of Quaternary Ammonium Ions into γ-Titanium Phosphate
- Phosphonylation of biomolecules with inorganic diphosphonate. II. Phosphonylation of phosphate groups on nucleoside 5'-monophosphates, deoxynucleoside 5'-monophosphates, and sugar phosphates.
- タイトル無し
- タイトル無し
- The thermal decomposition of ammonium zinc trihydrogenbis-(phosphate) monohydrate (NH4)ZnH3(PO4)2H2O.
- Separation and quantification for various phosphorus oxoacids by isotachophoresis.
- Effect of Water Vapor on the Formation of Lithium cyclo-Hexaphosphate.
- Mechanochemical changes of neodymium phosphates by grinding.
- Thermal Behavior of Alkaline-Earth Metal cyclo-Tetraphosphates.
- The reaction of cyclo-triphosphate with ethanolamines.
- The reaction of cyclo-triphosphate with ethylenediamine.
- Mechanochemical decomposition of dipotassium peroxodisulfate by dry grinding.
- The reaction of cyclo-triphosphate with L-.ALPHA.- or .BETA.-alanine.
- The reaction of cyclo-triphosphate with L-valine.
- Phosphorylation of nucleosides with sodium cyclo-triphosphate.
- Studies of the Preparation and Physical Properties of Multivalent Metal Condensed Phosphates. Part XI. The Preparation of Various Aluminum Phosphates and Their Thermal Transformation
- Conditions of the formation of rare earth phosphates and the colors of their powders.
- Thermal Decomposition of Barium Amidotriphosphate Ba2P3O9NH23.5H2O.
- Thermal Decomposition of Ammonium Amidotriphosphate (NH4)4P3O9NH2H2O.
- Region of formation of iron(III) hydrogen orthophosphate and structural changes in humid atmospheres.
- The reaction of cyclo-tetraphosphate with L-valine.
- Effect of Water Vapor on the Transformation of cyclo-Tetraphosphate.