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:
Aug. 09, 1988
Filed:
Apr. 30, 1986
Xin X Liu, Beijing, CN;
Bing Y Zhao, Beijing, CN;
Herbert Riegel, Maplewood, NJ (US);
Jo-Lung Chien, Cedar Grove, NJ (US);
Abstract
Dienes and/or acetylene impurities in an olefin feed; in particular a propylene feed, may be selectively hydrogenated in a single stage by use of a catalyst of palladium supported on alumina which is substantially crystalline alpha alumina, wherein the average pore radius is 200-2000 .ANG., with a least 80% of the pores having a pore radius within the range of 100 to 3000 .ANG.. The surface acidity of the catalyst is generally from 0.002 to 0.05 millimole of pyridine absorbed per gram of catalyst. The active palladium surface area is from 20 to 200 m.sup.2 /g. The palladium is in the form of crystallines having an average size of at least 25 .ANG..