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A Study on the Condensation of Sorbose with Acetone: Catalysis by Macroporous Ion Exchange Resins
Author(s) -
Nair P. R. M.,
Shah P. M.,
Sreenivasan B.
Publication year - 1981
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19810331107
Subject(s) - sorbose , acetone , condensation , chemistry , catalysis , ion exchange resin , copolymer , cationic polymerization , benzene , sulfonic acid , ion exchange , styrene , polymer chemistry , organic chemistry , ion , fructose , polymer , physics , thermodynamics
A study on the condensation of L‐sorbose with acetone to form 2,3‐4,6‐di‐o‐isopropylidene sorbose (diacetone sorbose, DAS) in the presence of various macroporous cationic exchange resins (sulfonic acid type based on styrene and divinyl benzene copolymers) has been carried out. The condensation rates were found to be dependent on the characteristics of the resins such as surface area and percent crosslinking. The formation of DAS was found to increase with increase in temperature and decrease with increase in particle size of the sorbose. On continuous use of the resins in the reaction the catalytic activity is found to decrease.