| 摘要 |
PCT No. PCT/EP95/00589 Sec. 371 Date Feb. 20, 1997 Sec. 102(e) Date Feb. 20, 1997 PCT Filed Feb. 17, 1995 PCT Pub. No. WO95/22539 PCT Pub. Date Aug. 24, 1995Disclosed is a process for the production of gamma-butyrolactone from maleic anhydride or succinic anhydride by hydrogenation in the presence of a catalyst composition comprising the mixed oxides of copper, zinc and zirconium. |
