The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 1992
Filed:
Feb. 19, 1991
Jean-Luc Dallons, Sint-Pieters-Leeuw, BE;
Pierre Jacobs, Gooik, BE;
Johan Martens, Brussels, BE;
Paul Tastenhoye, Tervuren, BE;
Ivan Vander Eynde, Keerbergen, BE;
August Van Gysel, Dilbeek, BE;
U C B, S.A., Brussels, BE;
Abstract
A process for producing gamma-butyrolactone by catalytic hydrogenation of maleic anyhydride in the liquid phase with hydrogen, at a high temperature and under pressure, in the presence of a catalyst comprising nickel and palladium deposited on a support, wherein said support is a silica based support having a very high specific surface area , the value of which may range from 50 m.sup.2 /g, preferably from about 100 m.sup.2 /g to about 800 m.sup.2 /g and more. Very high conversion rates of 90-98 mole % and excellent selectivities to gamma-butyrolactone of 95 to 97 mole % are achieved by the process.