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.
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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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