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. 09, 2015
Filed:
Jun. 06, 2012
Joan Fraga-dubreuil, Middlesbrough, GB;
Vinay Medhekar, Beaumont, TX (US);
Thomas A. Micka, West Grove, PA (US);
Keith Whiston, Darlington, GB;
Joan Fraga-Dubreuil, Middlesbrough, GB;
Vinay Medhekar, Beaumont, TX (US);
Thomas A. Micka, West Grove, PA (US);
Keith Whiston, Darlington, GB;
INVISTA North America S.a.r.l., Wilmington, DE (US);
Abstract
A novel nickel particulate form is provided that efficiently forms a zero-valent nickel complex with a phosphorus-containing ligands in an organic liquid to form a hydrocyanation catalyst. Particles in the nickel particulate form comprise nickel crystallites. For example, the nickel particulate form can have a BET Specific Surface Area of at least about 1 m/gm; an average crystallite size less than about 20-25 nm, the nickel particulate form can have at least 10% of the crystallites in the nickel form can have a diameter (C10) of less than about 10 nm, and/or there are on average at least about 10surface crystallites per gram nickel. A ratio of BET SSA to C50 for the nickel particulate form can be at least about 0.1×10m/gm and preferably at least about 0.4×10m/gm. Methods of preparation and use are also provided.