乙二胺四乙酸铁铵 | 21265-50-9

• 物质功能分类: 有机原料 - 有机金属类化合物 - 有机铁
• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 中文名称: 乙二胺四乙酸铁铵
• 中文别名: EDTA铁铵盐；EDTA 铁铵盐；乙二胺四乙酸铁胺；乙二胺四乙酸铁铵盐
• 英文名称: NH4FeEDTA
• 英文别名: ammonium Fe(III)ethylenediaminetetraacetic acid；Ammonium ferric edetate；azane;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxymethyl)amino]acetate;iron(3+)
• CAS: 21265-50-9
• 化学式: C₁₀H₁₂FeN₂O₈*H₄N
• 分子量: 362.099
• InChiKey: XNSQZBOCSSMHSZ-UHFFFAOYSA-K

物化性质

• 物理描述：
  Liquid

计算性质

• 辛醇/水分配系数(LogP)：
  -7.04
• 重原子数：
  22
• 可旋转键数：
  7
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.6
• 拓扑面积：
  168
• 氢给体数：
  1
• 氢受体数：
  10

安全信息

• 海关编码：
  2923900090
• 储存条件：
  2-8°C

制备方法与用途

化学性质
土黄色结晶粉末，无毒，加热至230℃会分解。它可以溶于水和酸，并且微溶于乙醇。

用途
主要用作氧化剂、感光材料冲洗加工中的漂白剂和减薄剂。此外，它还可用于有机选择性基团的还原反应，是醛类、酮类和酰氯类化合物的有效还原剂，能够将RCHO、RCOR、RCOCI还原为RCH2、CHR2、HOHR、RCH2OH等。在分析化学、农药、造纸工业及其他精细化工产品中，它也是常用的还原剂。此外，还用于处理含汞废水。

用途
主要用于照相行业中的胶片显影和定影。

反应信息

• 作为产物：
  描述：

  Iron(III) nitrate nonahydrate 、 乙二胺四乙酸 、 ammonium bicarbonate 以 水 为溶剂， 生成 乙二胺四乙酸铁铵
  参考文献：
  名称：

  Surface speciation and alkane oxidation with highly dispersed Fe(III) sites on silica

  摘要：

  When highly dispersed, supported Fe oxides are selective alkane oxidation catalysts, but new syntheses are required to reliably produce such materials. Here, highly dispersed, supported Fe3+ catalysts are prepared via incipient wetness impregnation of SiO2 with aqueous Fe complexes of ethylenediaminetetraacetic acid (FeEDTA), followed by calcination. With Na+ countercations, UV-visible diffuse reflectance spectra are entirely below 300 nm and H-2 temperature-programmed reduction only shows reduction at similar to 630 degrees C for all loadings up to 2.15 wt%, the maximum loading for a single impregnation cycle. These characteristics indicate isolated sites not seen for Fe(NO3)(3) precursors even at 0.3 wt%. NH4+ countercations lead to amorphous oxide oligomers and a minority species with unusual reducibility at 310 degrees C. countercations produce 'single-site' behavior in adamantane oxidation using H2O2 with a specific turnover frequency of 9.2 +/- 0.8 ks(-1), constant for all Fe loadings and approximately 10 times higher than that of other well-dispersed Fe/SiO2 materials. Similar turnover frequencies are obtained when counting only the highly reducible species on the NH4+-derived catalyst, allowing these sites to be tentatively assigned as small, undercoordinated clusters that are both easily reduced and participate in alkane oxidation, reminiscent of Fe-exchanged MFI zeolites. (C) 2011 Elsevier Inc. All rights reserved.

  DOI：

  10.1016/j.jcat.2011.01.007

文献信息

• Surface speciation and alkane oxidation with highly dispersed Fe(III) sites on silica
  作者：Dario Prieto-Centurion、Justin M. Notestein

  DOI：10.1016/j.jcat.2011.01.007

  日期：2011.4

  When highly dispersed, supported Fe oxides are selective alkane oxidation catalysts, but new syntheses are required to reliably produce such materials. Here, highly dispersed, supported Fe3+ catalysts are prepared via incipient wetness impregnation of SiO2 with aqueous Fe complexes of ethylenediaminetetraacetic acid (FeEDTA), followed by calcination. With Na+ countercations, UV-visible diffuse reflectance spectra are entirely below 300 nm and H-2 temperature-programmed reduction only shows reduction at similar to 630 degrees C for all loadings up to 2.15 wt%, the maximum loading for a single impregnation cycle. These characteristics indicate isolated sites not seen for Fe(NO3)(3) precursors even at 0.3 wt%. NH4+ countercations lead to amorphous oxide oligomers and a minority species with unusual reducibility at 310 degrees C. countercations produce 'single-site' behavior in adamantane oxidation using H2O2 with a specific turnover frequency of 9.2 +/- 0.8 ks(-1), constant for all Fe loadings and approximately 10 times higher than that of other well-dispersed Fe/SiO2 materials. Similar turnover frequencies are obtained when counting only the highly reducible species on the NH4+-derived catalyst, allowing these sites to be tentatively assigned as small, undercoordinated clusters that are both easily reduced and participate in alkane oxidation, reminiscent of Fe-exchanged MFI zeolites. (C) 2011 Elsevier Inc. All rights reserved.