1-6-anhydro-beta-glucopyranose and erythrose

An aqueous solution of glucose was reacted at temperatures from 200 to 400 degrees C under atmospheric pressure using a continuous flow reactor. For reaction temperatures above 300 degrees C, the liquid product yield was not sensitive to the temperature change; on the other hand, below 300 degrees C, it decreased rapidly with decreasing temperature. 1,6-Anhydro-beta-D-glucopyranose (AGP) and 1,6-anhydro-beta-D-glucofuranose (AGF) were the major components in the liquid product. The yields of AGP and AGF were 40% and 19%, respectively, at 360 degrees C and a feed rate of 0.5 mL/min. The optimum space time to produce AGP and AGF was about 0.2-0.4s under the present temperature conditions.

Topics: Acetaldehyde; Chromatography, High Pressure Liquid; Equipment and Supplies; Fructose; Furaldehyde; Glucose; Hot Temperature; Kinetics; Models, Chemical; Molecular Structure; Temperature; Tetroses