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. 21, 1990
Filed:
May. 11, 1988
Applicant:
Inventors:
Lothar Puppe, Burscheid, DE;
Gerhard Reiss, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; C01B / ;
U.S. Cl.
CPC ...
55 68 ; 55 75 ; 423328 ; 502 65 ; 502407 ; 502414 ;
Abstract
A SiO.sub.2 -bound, substantially carbonate-free, calcium-containing zeolite A granulate in which the calcium content is 0.4 to 1 mole CaO/mole Al.sub.2 O.sub.3 and a process for the production such SiO.sub.2 -bound calcium exchanged zeolite A granulate in a CO.sub.2 -free atmosphere at temperatures of 350.degree. C. to 700.degree. C. The SiO.sub.2 -bound zeolite granulate A being useful as an adsorbent in the recovery of oxygen by the pressure change adsorption process.