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. 14, 2016
Filed:
Jan. 30, 2014
Stephen R. Schmidt, Silver Spring, MD (US);
David M. Chapman, Ellicott City, MD (US);
Manoj M. Koranne, Clarksville, MD (US);
Michael D. Jensen, Laurel, MD (US);
Stephen R. Schmidt, Silver Spring, MD (US);
David M. Chapman, Ellicott City, MD (US);
Manoj M. Koranne, Clarksville, MD (US);
Michael D. Jensen, Laurel, MD (US);
W. R. GRACE & CO. -CONN., Columbia, MD (US);
Abstract
The invention concerns catalysts comprising (i) a clad catalyst support comprising (a) a core which comprises alumina particles and (b) about 1 to about 40 weight percent silica cladding, based on the weight of the clad catalyst support, on the surface of the core; the catalyst support having a BET surface area of greater than 20 m/g and a porosity of at least about 0.2 cc/g; and (ii) 0.1 to 10 weight percent, based on the weight of the catalyst, of catalytically active transition metal on the surface of the clad catalyst support; wherein the catalyst support has a normalized sulfur uptake (NSU) of up to 25 μg/m. The invention also concerns the production and use of such catalyst.