| 摘要 |
A monosaccharide is prepd. by (a) mixing the cellulose material, e.g. rice straw, barley straw, wheat straw, Yucca cellulose etc., with 15-21 % HCL soln., (b) reacting the mixt. at 100-110 deg.C for 5-8 hrs., (c) filtering the reacted mixt. to obtain the soln., and (d) adding 0.01-0.04 mol AlCl3 or AlCl3 6H2O into the obtd. soln., re-reacting at 100-110 deg.C for 3- 4 hrs., netralizing with sodium hydroxide, delignificating and purifying to obtain the final product.
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