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Synthesis process for chromium picolinate

A kind of technology of chromium picolinate and synthesis technology, applied in the field of synthesis technology of chromium picolinate, can solve the problem that the price of chromium 2-picolinate remains high, affects the popularization and application of chromium 2-picolinate, and the price of 2-picolinate is expensive and other problems, to achieve the effects of controllable pollution, less impurities and high atomic utilization.

Inactive Publication Date: 2008-12-10
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above two synthetic processes have many steps, difficult operation, and the problem of oxidant recovery, which is easy to cause environmental pollution
U.S. Patent No. 5677461 discloses a synthesis process of chromium picolinate, which obtains chromium 2-picolinate by reacting 2-picolinate with chromium salt, and directly generates chromium picolinate through complexation reaction between 2-picolinate and chromium salt. Due to the high price of 2-picolinic acid, the price of chromium 2-picolinate produced remains high, which directly affects the popularization and application of chromium 2-picolinate in feed additives and food additives

Method used

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  • Synthesis process for chromium picolinate
  • Synthesis process for chromium picolinate
  • Synthesis process for chromium picolinate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 2-cyanopyridine and chromium trichloride were added into a 30ml autoclave lined with polytetrafluoroethylene according to the molar ratio of 3:1, and about 20ml of water was added, and the reactor was tightened and heated to 150 degrees. Maintain a constant temperature of 150 degrees for 24 hours under 3 standard atmospheric pressures to generate pink chromium pyridinecarboxylate with a yield of 96.2%.

Embodiment 2

[0028] Add 2-cyanopyridine and chromium trichloride into a 30ml high-pressure reactor lined with polytetrafluoroethylene according to the molar ratio of 3:1, add about 15ml of water, tighten the reactor and heat it to 100 degrees, 2 The standard atmospheric pressure is maintained at a constant temperature of 100 degrees for 24 hours to generate pink chromium pyridinecarboxylate with a yield of 95.6%.

Embodiment 3

[0030] Add 2-cyanopyridine and chromium trichloride into a 30ml high-pressure reactor lined with polytetrafluoroethylene according to the molar ratio of 3:1, add about 20ml of water, tighten the reactor and heat it to 80 degrees, 2 The standard atmospheric pressure is maintained at a constant temperature of 80 degrees for 48 hours to generate chromium pyridinecarboxylate with a yield of 96.5%. The synthesis process has the highest yield and can be used as a preferred embodiment of the present invention.

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Abstract

The invention discloses a process for synthesizing chromium picolinate. The process uses 2-pyridinecarbonitrile and chromic salt as reactants to generate the chromium picolinate by one-step hydro-thermal synthesis reaction at a temperature of between 80 and 200 DEG C under 2 to 3 standard atmospheric pressure. The process has simple operation, easily realizes mass production, and greatly reduces the manufacturing cost; moreover, the whole process is a green production with low environmental pollution.

Description

technical field [0001] The invention relates to a synthesis process of chromium picolinate (chromium 2-picolinate). Background technique [0002] Chromium (Cr) is an important nutrient component. The main physiological function of chromium is to affect the metabolism of carbohydrates, lipids and proteins by strengthening the function of insulin. Studies in recent years have proved that during the high-intensity growth period of animals, chromium can not only regulate protein metabolism, but also act as an immune regulator to affect the health and growth performance of animals. Leaching, the intake of chromium is very small. Therefore, both humans and animals are generally deficient in chromium. This effect can be easily seen from the favorable reaction of animal production capacity after chromium supplementation. Therefore, it can be said that the chromium content in the diet used for animal husbandry production is not enough, and chromium supplementation It should be on t...

Claims

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Application Information

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IPC IPC(8): C07D213/79
Inventor 李新华赵亚娟
Owner WENZHOU UNIVERSITY
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