FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing a diol, in which starting materials used are aqueous solution of sugar and hydrogen, which are brought into contact with a catalyst in water in a reaction system to obtain a diol. Catalyst used is a composite catalyst consisting of a basic catalyst and a cocatalyst. Main catalyst is a water-insoluble acid-resistant alloy consisting of nickel, one or more rare-earth elements, tin and aluminum, and optionally (i) tungsten, or (ii) tungsten and molybdenum, or (iii) tungsten, molybdenum and boron or phosphorus. Cocatalyst is a soluble salt of tungstic acid and / or an insoluble tungsten compound. Diol is ethylene glycol and the pH of the reaction system is 1–7.
EFFECT: technical result is use of acid-resistant inexpensive and stable alloy, which does not require a carrier, as a basic catalyst, and it can guarantee high output of diol at relatively low cost of production.
27 cl, 10 ex, 2 dwg
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