The Coca-cola Company

Changchun Meihe Science and Technology Development Co., Ltd.

Global Bio-chem Technology Group Company Limited

Changchum Meihe Science and Technology Development Co., Ltd

Hongbin Qi

Jing Liu

Haiyu Ren

Indra Prakash

Yu Shi

Marlon Salvador Morales

Robert M Kriegel

Ronald D Moffitt

Yi Yuan

Yang Yi

Zhouwen Xu

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.

Methods for preparing diol

Disclosed are bio-based mono-ethylene glycol (MEG) compositions containing from about 1 ppm to about 5000 ppm of at least one C3-C12 1,2-diol, bio-based polyester compositions made therefrom, and methods of making the same are disclosed. Preforms and blow-molded polyester containers prepared from the bio-based MEG and polyester are described.

Bio-based MEG and polyester compositions and methods of making the same

Disclosed are bio-based polyester fibers, particularly a PET fibers, and a method of making the same by: contacting bio-based MEG composition with a diacid composition to form a polyester composition; and spinning and/or drawing the resulting polyester composition into a fiber; wherein the bio-based MEG composition comprises: a) monoethylene glycol (MEG); and b) from about 1 ppm to about 5000 ppm of at least one C3-Cy2 1,2-diol, wherein the C3-Cj2 1, 2-diol is linear, branched, or cyclic.

Bio-based MEG and polyester fiber compositions and methods of making the same

An acid-resistant alloy catalyst, comprising nickel, one or more rare earth element, tin, aluminum and molybdenum. The catalyst is cheap and stable, does not need a carrier, can be stably applied in industrial continuous production, and can lower the production cost.

Acid-resistant alloy catalyst

Disclosed is an acid-resistant alloy catalyst comprising nickel, one or more rare earth elements, stannum and aluminum. The acid-resistant alloy catalyst is low-cost and stable, and does not need a carrier, and can be stably used in continuous industrial production, thus achieving a low production cost.

Disclosed is an acid-resisting alloy catalyst comprising nickel, one or more rare earth elements, stannum and aluminum. The acid-resistant alloy catalyst is low-cost and stable, and does not need a carrier, and can be stably used in continuous industrial production, thus achieving a low production cost.

The present invention relates to a process for separation of diols from a mixture comprising diols and polyols, for example, from a reaction mixture obtained from hydrogenolysis of sorbitol. In particular, the present invention relates to separation of diols from the mixture using a combination of a wiped-film evaporator and a molecular evaporator to obtain diols in a high yield.

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Changchun, China

Hongbin Qi