甘氨酸亞鐵的合成工藝研究

材料科學論文編號:CL042  論文字數:11125,頁數:27

目  錄

中文摘要 I
英文摘要 II
目錄 III
1．緒論 1
   1.1甘氨酸螯合物的概述 1
       1.1.1 甘氨酸螯合物的定義及性質 1
       1.1.2 氨基酸螯合物的作用 2
   1.2甘氨酸螯合鐵的概述 2
       1.2.1 鐵的作用 2
       1.2.2 甘氨酸的作用 3
   1.3 甘氨酸亞鐵的研究進展 3
       1.3.1甘氨酸螯合鐵的發展及優勢 3
       1.3.2 甘氨酸亞鐵的合成 4
 1.4 立題目的和意義 6
2．實驗部分 8
   2.1 實驗試劑與儀器設備 8
       2.1.1 實驗試劑 8
       2.1.2 儀器設備 8
    2.2 實驗方法 9
       2.2.1 合成方案 9
       2.2.2 檢測方法 9
3．結果與討論 13
 3.1 鐵源及萃取劑的選擇 13
 3.2有機溶劑用量的選擇 13
  3.3 PH值對反應的影響 14
　3.4抗氧化劑用量的選擇 15
  3.5 配位比的影響 15
  3.6 紅外譜圖分析 16
  3.7 DSC分析 18
4．總結與展望 20
致謝 21
參考文獻 22

摘 要：本文以氯化亞鐵和甘氨酸為原料，研究了甘氨酸螯合鐵的合成工藝條件。結果表明，pH值、配位比以及抗氧化劑用量對產品組成和得率有很大影響。確定了螯合的最適條件為：pH 值為5，配位比為2：1。采用有機溶劑萃取法，使甘氨酸螯合鐵在無水乙醇中以沉淀的方式析出，實現甘氨酸螯合鐵與無機鐵的分離。討論了萃取時有機溶劑用量對產品得率的影響，在無水乙醇與濾液的體積比為8：l時，亞鐵得率最高。并用紅外和DSC對產物進行分析表征。
 
關鍵詞：甘氨酸；氯化亞鐵；甘氨酸亞鐵；

Abstract: The synthesizing conditions of ferrous glycinate chelate using ferrous chloride and glycine as raw materials were studied in this paper．The result showed that the constitution of the product and the recovery of ferrous were considerably affected by p H ，the molar ratio of glycine to ferrous, and the amount of antioxidant．The optimal reaction condition was pH 5.0，the molar ratio of 2：1．The filtrate was treated with organic solvent and the ferrous glycinate chelate was precipitated in ethyl alcohol absolute．Consequently，the chelate can be purified and analyzed by common chemical method． Extraction solvent was also eva luated． The effect of volume ratio of organic solvent to filtrate on the recovery of ferrous was studied． The highest recovery rate of ferrous was obtained at 8:1l of ethyl alcohol absolute to filtrate of ferrous glycinate. The product was characterized by IR and DSC.

Keywords：Glycine；ferrous chloride；ferrous glycinate