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沉淀剂对制备纯相δ-FeOOH的影响 被引量：1

Effect of Precipitating Agent on Preparation of Purity-phase Amorphous δ-FeOOH
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摘要 在室温和EDTA存在的条件下,氧气氧化Fe(OH)2制备纯相的δFeOOH,只能选用碱比(R)小于0.500的NaOH为沉淀剂.实验以R均大于0.625的沉淀剂NH3·H2O,Na2CO3及NH4HCO3分别取代NaOH,得到了不同的pH值变化趋势及产物.结果表明,在一特定条件下,沉淀剂的R对制备纯相非晶态δFeOOH起关键的作用. On condition that EDTA was presented under room-temperature,only NaOH(whose value of alkali ratio R<0.500)can be used as precipitating agent in the course of preparation of purity-phase amorphous δ-FeOOH with Fe(OH)_2 oxidized by oxygen.The different pH variation trend and products from expected ones was attained by replacing NaOH with NH_3·H_2O,Na_2CO_3 and NH_4HCO_3 respectively(whose values of R0.625).As a result of our tests,under a certain conditions,the value of R of the precipitaing agent had decisive effect on the preparation of purity-phase amorphous δ-FeOOH.
作者 孟哲 贾振斌 魏雨
机构地区 邢台学院化学系 河北师范大学化学学院
出处 《河北师范大学学报（自然科学版）》 CAS 2004年第1期55-59,共5页 Journal of Hebei Normal University：Natural Science
基金 河北省自然科学基金资助项目(501115)
关键词 沉淀剂 碱比 非晶态δ-FeOOH 氧气氧化 FE(OH)2 precipitating agent value of the alkali ratio amorphous δ-FeOOH
分类号 O614.811 [理学—无机化学]
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参考文献12

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河北师范大学学报（自然科学版）
2004年 第1期

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