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:
May. 17, 1983
Filed:
Nov. 30, 1981
Applicant:
Inventors:
Timothy P Murtha, Bartlesville, OK (US);
Charles A Drake, Nowata, OK (US);
Assignee:
Phillips Petroleum Company, Bartlesville, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ;
U.S. Cl.
CPC ...
252460 ;
Abstract
Unsaturated dinitriles are hydrogenated to saturated diamines using a rhodium catalyst on a silica support having a surface area larger than 275 m.sup.2 /g, a pore volume of from about 1.0 to 1.5 mL/g and an average pore size of from about 100 to about 175 A. The supported rhodium catalyst is prepared by a method which includes the steps of contacting a silica support having the characteristics described above with a solution or dispersion of rhodium or a reducible compound of rhodium, and then subjecting the impregnated silica support to vacuum treatment.