Process for separating ketoses from alkaline- or pyridine-cataly

Details Process for separating ketoses from alkaline- or pyridine-cataly Process for separating ketoses from alkaline- or pyridine-cataly

1985-12-20

1987-09-08

Brown, Johnnie R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536124, C07H 100

Patent

active

046925147

ABSTRACT:
A process for the liquid phase adsorptive separation of psicose from an aqueous feed mixture of monosaccharides containing psicose along with other aldoses and ketoses. The feed is contacted with a calcium-Y type zeolite in two stages. In the first, psicose and fructose are selectively adsorbed to the substantial exclusion of other aldoses and ketoses. In the second, psicose is adsorbed to the substantial exclusion of fructose, which is recovered in high purity in the raffinate. The process can be carried out on a commercial scale by means of a simulated moving bed flow scheme.

REFERENCES:
patent: 4014711 (1977-03-01), Odawara et al.
patent: 4024331 (1977-05-01), Neuzil et al.
patent: 4096036 (1978-06-01), Liu et al.
patent: 4340724 (1982-07-01), Neuzil et al.
patent: 4442285 (1984-04-01), Neuzil et al.
patent: 4471114 (1984-09-01), Sherman et al.
"Chemistry of the Carbohydrates" by William Ward Pigman and Rudolph Maximilian Goepp, Jr., 1948 Academic Press Inc., Publishers, pp. 41, 126, 127.

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