Methods for preparing diol
AssigneesThe Coca-Cola Company, Changchum Meihe Science and Technology Development Co., LTD
InventorsJing Liu, Hongbin Qi, Haiyu Ren, Indra Prakash, Yu Shi
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Abstract
Provided is a method for preparing a diol. In the method, a saccharide and hydrogen as raw materials are contacted with a catalyst in water to prepare the diol. The employed catalyst is a composite catalyst comprised of a main catalyst and a cocatalyst, wherein the main catalyst is a water-insoluble acid-resistant alloy; and the cocatalyst is a soluble tungstate and/or soluble tungsten compound. The method uses an acid-resistant, inexpensive and stable alloy needless of a support as a main catalyst, and can guarantee a high yield of the diol in the case where the production cost is relatively low.
Claims17
A method for preparing a diol comprising contacting a sugar and hydrogen with a catalyst in water in a reactor to prepare a diol;
- wherein the catalyst is a composite catalyst consisting of a main catalyst and a cocatalyst;
- the main catalyst is a water-insoluble acid-resistant alloy comprising nickel, one or more rare earth elements, tin and aluminum;
- and the cocatalyst is a soluble tungstic acid salt and/or an insoluble tungsten compound.
Dependencies are inferred from the claim text.