Document Type and Number:
Japanese Patent JPS6121208
Kind Code:
B2
Abstract:
Process for the catalytic hydrogenolysis of maleic anhydride to give 1,4-butanediol and tetrahydrofuran in a single-stage operation by means of hydrogen under heat and pressure, in the presence of a suspension of a reduced solid catalyst, which contains as catalytically active elements Ni in association with Mo and/or W and optionally with Zr and/or Nb, having the following essential characteristics: (I) double oxidizing treatment of the solid catalyst in two stages before its reduction, and (II) conducting the hydrogenolysis of maleic anhydride at a temperature of from 170 DEG to 215 DEG C. under a hydrogen pressure below about 200 bars, in a reaction medium which contains gamma-butyrolactone, for a time such that the amount of gamma-butyrolactone in the final reaction medium is substantially equal to that present in the initial reaction medium.
Inventors:
JAN RAMIORE
UIRII KOTEAU
UIRII KOTEAU
Application Number:
JP13977977A
Publication Date:
May 26, 1986
Filing Date:
November 21, 1977
Export Citation:
Assignee:
UCB SA
International Classes:
B01J21/00; B01J23/00; B01J23/85; C07B61/00; C07C27/00; C07C29/132; C07C29/136; C07C29/149; C07C29/17; C07C31/20; C07C67/00; C07D307/08; C07D315/00
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