Processes of regenerating Ni catalysts and of preparing Ni catal

Details Processes of regenerating Ni catalysts and of preparing Ni catal Processes of regenerating Ni catalysts and of preparing Ni catal

1994-12-22

1997-10-07

Caldarola, Glenn A.

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Treating with a liquid or treating in a liquid phase,...

502 27, 502 29, 502 25, 502 38, 502 53, 502 56, 502335, 502325, 502332, B01J 2034, B01J 3860, B01J 3802, B01J 3810

Patent

active

056747969

ABSTRACT:
The present invention relates to processes of regenerating Ni catalysts which had been used in a hydrogenation of unsaturated fatty oil or petroleum resin, which comprise separating the Ni-extracted solution and support by extracting the pretreated Ni catalysts with an acid, preparing support-containing solution by burning the separated support in the flow of air or oxygen diluted with nitrogen at the temperature of 300.degree. to 800.degree. C. for 5 to 15 hours and adding deionized water to the support, preparing a catalyst precursor by dropping the Ni-extracted solution and the mixed solution of a basic compound and a compound with free oxygen in the support-containing solution during agitation so as to keep PH of the solution at 9 to 13, whereby nickel oxide precipitates on the support, carrying out a step consisting of aging, washing, filtering and drying the catalyst precursor, and stabilizing the dried catalyst precursor by reducing with hydrogen and passing in nitrogen diluted with oxygen or an organic material.

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