Method for preparing copper zinc aminoacetic acid complex by grinding solid phase
A technology for the preparation of zinc glycine and solid phase, which is applied in the field of synthesis and production of amino acid metal complexes, which can solve the problems of serious environmental pollution, high production cost, complex process, etc., and achieve the effects of low energy consumption, short reaction time and simple process
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Embodiment 1
[0035] Example 1 Preparation of Copper Glycinate by Grinding Glycine and Basic Copper Carbonate
[0036] The reaction principle is:
[0037] 4NH 2 CH 2 COOH+CuCO 3 ·Cu(OH) 2 ·H 2 O→[Cu(NH 2 CH 2 COO) 2 ·H 2 O]+3H 2 O+CO 2 ↑
[0038] The preparation steps are as follows: Accurately weigh glycine and basic copper carbonate crystals to make the molar ratio 2:1, mix them in a mortar and grind at room temperature. After grinding for 20 minutes, the color of the mixture becomes lighter, showing light blue. Continue to grind until 40min, the color of the mixture gradually becomes darker and blue. When grinding to about 60min, the blue color is uniform. A small amount adheres to the wall and forms a paste. Wash the product 2 times with 75% ethanol. Drying: Dry at room temperature first, then fully dry at 80°C.
[0039] The resulting product was subjected to infrared spectroscopic analysis. Determination of copper glycinate in 400 ~ 4000cm by KBr tablet method -1 infra...
Embodiment 2
[0041] Embodiment 2 glycine and copper acetate prepare copper glycine
[0042] The reaction principle is:
[0043] 2NH 2 CH 2 COOH+Cu(Ac) 2 ·H 2 O→[Cu(NH 2 CH 2 COO) 2 ·H 2 O]+2HAc↑
[0044] The preparation steps are as follows: Accurately weigh glycine and copper acetate crystals to make the molar ratio 2:1, mix them in a mortar and grind at room temperature. After grinding for 20 minutes, the color of the mixture becomes lighter and blue. And emit irritating acetic acid smell. Continue to grind until 40min, the color of the mixture is blue-purple, and the pungent smell becomes lighter. When grinding to about 60min, the smell of acetic acid could not be smelled, and the reaction was complete. Wash the product 2 times with 75% ethanol. Drying: Dry at room temperature first, then fully dry at 80°C.
[0045] The resulting product was subjected to infrared spectroscopic analysis. Determination of copper glycinate in 400 ~ 4000cm by KBr tablet method -1 infrared sp...
Embodiment 3
[0047] Embodiment 3 glycine and cupric chloride prepare copper glycinate
[0048] The reaction principle is:
[0049] 2NH 2 CH 2 COOH+CuCl 2 ·H 2 O→[Cu(NH 2 CH 2 COO) 2 ·H 2 O]+2HCl↑
[0050] The preparation steps are as follows: Accurately weigh glycine and copper chloride crystals to make the molar ratio 2:1, mix them in a mortar at room temperature and grind them. After milling for 20 min, the color of the mixture changed from light blue to green. Continue to grind until 40min, a large amount of water is generated, and the product is sticky. Naturally dried for 12 hours, the product was dark green. After dissolving in water, it becomes a dark blue solution. Wash the product 2 times with 75% ethanol. Drying: Dry at room temperature first, then fully dry at 80°C.
[0051] The resulting product was subjected to infrared spectroscopic analysis. Determination of copper glycinate in 400 ~ 4000cm by KBr tablet method -1 infrared spectrum. As can be seen in Figure ...
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