Thermochemical transformation of glucose to 1,6-anhydroglucose in high-temperature steam.
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.
Sasaki
Masahide
M
National Institute of Advanced Industrial Science and Technology, Sapporo, Japan.
Takahashi
Kenji
K
Haneda
Yui
Y
Satoh
Hiroe
H
Sasaki
Akiyoshi
A
Narumi
Atsushi
A
Satoh
Toshifumi
T
Kakuchi
Toyoji
T
Kaga
Harumi
H
D000079:Acetaldehyde / Q000031:analogs & derivatives / Q000138:chemical synthesis / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid; D004864:Equipment and Supplies; D005632:Fructose / Q000138:chemical synthesis / Q000737:chemistry; D005662:Furaldehyde / Q000031:analogs & derivatives / Q000138:chemical synthesis / Q000737:chemistry; D005947:Glucose / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry*; D006358:Hot Temperature; D007700:Kinetics; D008956:Models, Chemical; D015394:Molecular Structure; D013696:Temperature; D013780:Tetroses / Q000138:chemical synthesis / Q000737:chemistry
D013780:Tetroses; D005632:Fructose; C014989:1,6-anhydro-beta-glucopyranose; C008046:5-hydroxymethylfurfural; D005662:Furaldehyde; D000079:Acetaldehyde; D005947:Glucose; C010972:glycolaldehyde; C073321:erythrose