Preparation method of gluconic acid and its salt

A technology of gluconate and gluconic acid, which is applied in the field of preparation, can solve the problems of difficult recovery of precious metals, poor oxidation selectivity, large consumption of precious metals, etc., and achieve the effects of simple process flow, long catalytic life and cheap raw materials
CN1594265AInactive Publication Date: 2005-03-16KUNMING INST OF PRECIOUS METALS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
KUNMING INST OF PRECIOUS METALS
Publication Date
2005-03-16
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention relates to the preparation method of gluconic acid and its salt, wherein Au / C catalyst liquid phase catalytic oxidation glucose is employed to synthesize calcium gluconae through calcium hydrate neutralization, based on this, the replacing reaction of magnesium, zinc and ferrous sulfate is utilized to obtain the corresponding glucoheptonates, and glucose acid is obtained through sulfuric acid replacement reaction.
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Description

technical field

[0001] The invention relates to a preparation method of gluconic acid and its salts, in particular to a preparation method of gluconic acid and its calcium salt, magnesium salt, zinc salt, ferrous salt and the like. Background technique

[0002] Gluconic acid and its salts are important organic chemical products with multiple uses. They can be used as food additives and nutritional supplements, complexing agents, cleaning agents for glass and steel surfaces, washing aids, etc., and are widely used in the fields of food, medicine, electroplating, construction, textiles, and daily chemicals. For example: (1) Calcium gluconate is a calcium preparation, which is mainly used clinically for calcium supplementation and treatment of various diseases caused by calcium deficiency. It can promote the calcification of bones and teeth, maintain the normal excitability of neuromuscular, reduce capillary permeability, increase the contractility of capillary wall; prevent c...

Claims

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