Title:
【発明の名称】芳香族アルデヒドの製法
Document Type and Number:
Japanese Patent JPH10504296
Kind Code:
A
Abstract:
PCT No. PCT/EP95/03167 Sec. 371 Date Feb. 14, 1997 Sec. 102(e) Date Feb. 14, 1997 PCT Filed Aug. 10, 1995 PCT Pub. No. WO96/05161 PCT Pub. Date Feb. 22, 1996Aromatic aldehydes are prepared by catalytically reacting aromatic carboxylic acids or their esters with hydrogen in the gas phase at from 200 DEG to 450 DEG C. and from 0.1 to 20 bar in the presence of a zirconium dioxide/lanthanide catalyst having a high BET surface area of from 20 to 150 m2/g, preferably from 40 to 150 m2/g. The proportions by weight of the catalytically active mass range from 80 to 99.9% by weight of zirconium dioxide and from 0.01 to 20 %by weight of one or more lanthanide elements. This catalyst provides very high conversion rates of 94 to 100% together with a correspondingly high selectivity for the aldehyde product.
Inventors:
Rolf Fisher
Matthias Ilgang
Werner Schneul
Joachim Wolff-Dering
Matthias Ilgang
Werner Schneul
Joachim Wolff-Dering
Application Number:
JP50701195A
Publication Date:
April 28, 1998
Filing Date:
August 10, 1995
Export Citation:
Assignee:
BASF Akchen Gezel Shaft
International Classes:
B01J23/10; C07B61/00; C07C45/41; C07C47/542; C07C47/575; C07C67/313; C07C221/00; C07C223/06; C07C253/30; C07C255/56; (IPC1-7): C07C47/542; B01J23/10; C07C45/41; C07C47/575; C07C221/00; C07C223/06; C07C253/30; C07C255/56
Attorney, Agent or Firm:
Toshio Yano (3 outside)