Abstract

The solution combustion synthesis of iron oxides from nitrate solutions with a dual fuel comprising urea and citric acid on the earlier synthesized FeO_x powder was studied. The possibility of the synthesis of up to 100 g of the desired product under laboratory conditions in a relatively small (4 dm³) reactor was demonstrated for the first time. The obtained nanodisperse materials were a well-crystallized mixture of Fe₃O₄ and α-Fe₂O₃ oxides. A consistent increase in the weight of the FeO_x powder led to an increase in the mass fraction of the α-Fe₂O₃ phase to 91% at the final stage of the synthesis.

中文翻译：

---

添加非活性成分 FeOx 的氧化铁溶液燃烧合成的放大

摘要

研究了使用包含尿素和柠檬酸的双燃料在较早合成的 FeO _x粉末上从硝酸盐溶液溶液燃烧合成氧化铁。首次证明了在实验室条件下在相对较小 (4 dm ³ ) 反应器中合成高达 100 g 所需产物的可能性。获得的纳米分散材料是Fe ₃ O ₄和α-Fe ₂ O ₃氧化物的结晶良好的混合物。FeO _x粉末重量的持续增加导致在合成的最后阶段α-Fe ₂ O ₃相的质量分数增加到91%。