Method for producing 1,3-propanediol

A technology of propylene glycol and glycerol, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of harsh reaction conditions, low yield, and increased cost, etc. Achieve high conversion and selectivity, high catalyst activity, and mild reaction conditions
CN101747150AActive Publication Date: 2010-06-23SYNFUELS CHINA TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SYNFUELS CHINA TECH CO LTD
Publication Date
2010-06-23
Patent Text Reader

Abstract

The invention relates to a method for producing 1,3-propanediol with glycerol as material by way of gas phase hydrogenolysis of glycerol, which includes the following step that: under the existence of metal-acid bifunctional catalyst, the glycerol receives gas phase hydrogenolysis, so that the 1,3-propanediol is prepared; and the invention also relates to the application of the metal-acid bifunctional catalyst in the reaction for preparing the 1,3-propanediol by way of gas phase hydrogenolysis of glycerol. The metal-acid bifunctional catalyst contains the following components loaded on carrier: (a) solid acidic active component, (b) metal component (one of copper, nickel or cobalt) with hydrogenation activity, and (c) optionally added metal addition agent component (one or more of iron, zinc, tin, manganese and chromium). The method can directly obtain the 1,3-propanediol by way of hydrogenolysis, as well as 1,2-propanediol. The method has the advantages of mild reaction conditions, simple technique and continuous operation.
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Description

technical field

[0001] The invention relates to a method for preparing 1,3-propanediol, in particular, the invention relates to a method for preparing 1,3-propanediol by direct gas-phase hydrogenolysis of glycerol. Background technique

[0002] 1,3-propanediol is one of the important monomers for the synthesis of new polyester PTT. PTT has excellent performance due to its helical structure, which combines the softness of nylon, the bulkiness of acrylic fiber and the stain resistance of polyester, plus its inherent elasticity, moderate glass transition temperature and good processing performance. The excellent properties of the fiber are integrated, so the production of 1,3-propanediol has been widely concerned (Petrochemical Industry, 2006, 35, 597). In addition, 1,3-propanediol is also used in food, pharmaceutical, cosmetics, antifreeze and other industries.

[0003] There are many processes for the production of 1,3-propanediol. At present, the processes widely used in ...

Claims

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