CONTINUOUS PROCESS FOR HIGHLY SELECTIVE CONVERSION OF CARBOHYDRATE AFFORDING ALDOHEXOSE TO ETHYLENE GLYCOL

Japanese Patent JP2022071039

A

To provide a method for producing ethylene glycol from a carbohydrate affording aldohexose.SOLUTION: Disclosed is a highly selective continuous process for converting aldohexose in a feed material including a carbohydrate affording aldohexose to ethylene glycol. The related process includes the steps of: making a feed material including a carbohydrate pass through a reaction zone having an aqueous hydrogenation medium which includes a reverse aldol catalyst, hydrogen and hydrogenation catalyst continuously or intermittently; and providing a product material solution including ethylene glycol by maintaining that hydrogenation medium under the hydrogenation conditions in the reaction zone. The hydrogenation conditions include a temperature in a range from about 230°C to 300°C, a ratio of the reverse aldol catalyst to the hydrogenation catalyst and a hydrogen partial pressure. By combining those conditions, the mass ratio of ethylene glycol to the hexitol prepared by hydrogenation of hexose larger than about 10:1 in a product material solution can be obtained.SELECTED DRAWING: Figure 1

WO/2016/034344

INDUSTRIAL PRODUCTION PLANT HAVING MINIMAL EMISSION OF GREENHOUSE GASES, IN PARTICULAR EMISSION OF CARBON DIOXIDE, AND METHOD FOR THE OPERATION THEREOF

DAVID JAMES SCHRECK
RAY CHRISMAN
BROOKE ALBIN
NYE CLINTON
MARION BRADFORD
DONALD BUNNING

JP2022027999A

May 13, 2022

February 25, 2022

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IOWA CORN PROMOTION BOARD

C07C29/00; C07C29/156; C07C31/20

WO2015179302A1	2015-11-26
WO2016045583A1	2016-03-31

Osamu Yamamoto
Toru Miyamae
Yuki Ogasawara

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