The use of temperature to simplify formose sugar composition |
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| Authors: | V A Likholobov A H Weiss and M M Sakharov |
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| Institution: | (1) Department of Chemical Engineering, Worcester Polytechnic Institute, 01609 Worcester, Massachusetts, USA;(2) Institute of Chemical Physics, USSR Academy of Sciences, B334 Moscow, USSR;(3) Present address: Institute of Catalysis, Novosibirsk, USSR |
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| Abstract: | Form ose reaction, the Ca(OH)2 catalyzed condensation of HCHO to a complex mixture of sugars, does not lose its autocatalytic nature at 98°C. The induction period is 15 sec, and then, at 18% total HCHO conversion, there was a period of approximately 3 sec duration in which the reaction had produced C6 sugars at 84.3 wt.% selectivity. Glucose amounted to 90% of those sugars, and no branched sugars were detected. Conversion was complete within 3 min. The simple nature of the product was lost at lower temperatures or higher conversions.
             —   HCHO,    Ca(OH)2,       98°C.   15 , 38%-   HCHO   3 , C6 84,3 . %.  90%, .   3- .  .
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