Improving odor of isopropanol

Details Improving odor of isopropanol Improving odor of isopropanol

1979-04-20

1980-08-26

Evans, Joseph E.

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

Organic compounds

Oxygen containing

568922, C07C 2924

Patent

active

042196850

ABSTRACT:
Methods for deodorizing lower alcohols such as ethanol and isopropyl alcohol and their oxy derivatives such as ethers and esters are disclosed, including contacting these compounds with a deodorizing contact mass comprising, on a support, metals and/or metal oxides, preferably of the metals of Group IB, VIB and VIII of the Periodic Table, where the metal oxides are at least partially reduced to metal and the deodorizing contact mass has a minimum particle dimension of greater than about 0.254 mm so as to be in a form suitable for use in a fixed bed contacting process. In a preferred embodiment, isopropyl alcohol is deodorized employing such deodorizing contact masses, preferably comprising Group VIII metals such as nickel, iron, cobalt and the like, on a support, so that the contact mass has a surface area less than about 1,500 m.sup.2 per gram.
Overall isopropyl alcohol finishing procedures are also disclosed employing such deodorizing methods in combination with extractive distillation procedures to produce a high grade, e.g., 91%, and/or anhydrous grade isopropyl alcohol from a crude isopropyl alcohol stream containing more than about 0.0005 percent water.

REFERENCES:
patent: 2584325 (1952-02-01), Bowen et al.
patent: 2585816 (1952-02-01), Mertzweiller
patent: 2857436 (1958-10-01), MacKinder et al.
patent: 3624165 (1971-11-01), Dehn et al.
patent: 3960672 (1976-06-01), Ester et al.
patent: 3990952 (1976-11-01), Katzen et al.

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