Purification of unsaturated dinitriles by contacting with chi-al

Details Purification of unsaturated dinitriles by contacting with chi-al Purification of unsaturated dinitriles by contacting with chi-al

1978-09-01

1980-11-25

Brust, Joseph Paul

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260464, 260465H, 564491, 564511, C07C12000, C07C12128, C07C12146, C07C12166

Patent

active

042358086

ABSTRACT:
The lifetime and activity of catalysts for the hydrogenation of unsaturated dinitriles are increased by contacting the unsaturated dinitriles with chi-alumina prior to hydrogenation. This process additionally reduces the level of olefin unsaturation in the hydrogenation product below the level of olefin unsaturation of similarly hydrogenated unsaturated dinitriles which have not been contacted with chi-alumina prior to hydrogenation.

REFERENCES:
patent: 3283803 (1966-11-01), Phillips, Jr. et al.
patent: 3293298 (1966-12-01), Szabo
patent: 3408397 (1968-10-01), Feldman et al.
Wiberg, Lab. Technique in Org. Chem., 1960, pp.155-156 McGraw-Hill, N.Y., N.Y.
Kirk-Othmer, "Encyclopedia of Chem. Technology," vol. 2, 2nd ed., 1963, pp. 48-49.

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