Effects of the method of preparing iron orthophosphate catalyst on the structure and the catalytic activity

Low temperature heat capacity Study of Fe(PO3)3 and Fe2P2O7

“…Recently, iron phosphate compounds have attracted considerable research interest in the field of material science due to their outstanding chemical, thermal, electrical and magnetic properties [1][2][3][4][5]. Crystalline and amorphous iron phosphate materials have been developed and applied widely in various technologically important fields such as catalysis [6][7], electrochemistry [8][9][10][11], optical and magnetic materials [12][13][14][15][16], biosensor fabrication [17], bio-absorbable glass fibers [18], industrial coatings [19], and tissue engineering [20]. Moreover, the high chemical durability of iron phosphate glasses makes them suitable as alternative materials for safe immobilization and permanent disposal of a variety of high-level nuclear waste [3,[21][22][23][24][25][26][27].…”

Thermal stability of glasses from the Fe4(P2O7)3–Fe(PO3)3 system

“…Crystalline iron phosphate compounds have been developed for several applications, including catalysts, optical materials and electrodes [1][2][3][4][5]. Chemically durable iron phosphate glasses have been studied as alternative materials for vitrifying high-level nuclear waste [6][7][8][9][10].…”

“…Wentrup reported a portion of the phase diagram for the Fe 2 O 3 -Fe 4 (P 2 O 7 ) 3 system [13], but did not cover the conventional glass-forming range for iron phosphate compositions, where the nominal Fe 2 O 3 /P 2 O 5 molar ratio is between 1/3 and 2/3 [2][3][4][14][15][16]. More recently, we have reported the ferric phosphate liquidus surface between Fe(PO 3 ) 3 and Fe 3 PO 7 [17], updating and expanding Wentrup's analysis.…”

Electrochemical performances of FePO4-positive active mass prepared through a new sol–gel method

“…Figure 3 shows that S BET decreases by a factor of more than 10 in the explored temperature range. The sample annealed at 400°C shows an S BET of 28 m 2 g −1 , which is about four times greater than the value obtained on the FePO 4 compound, annealed at the same temperature, using coprecipitation method, by Ai et al [18]. Such large surface area values originate from the small grain size achieved by this specific sol-gel method.…”