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:
Nov. 03, 2015
Filed:
Jul. 16, 2010
Mitsuhiro Arisawa, Sapporo, JP;
Satoshi Shuto, Sapporo, JP;
Naoyuki Hoshiya, Tokyo, JP;
Abstract
The present invention provides the catalyst precursor that has excellent safety and stability, has high stable activity retention rate, can be recycled, increases yield resulted from a reaction, and is easily processed into various forms. The catalyst precursor comprises a structure in which the entire structure is composed of gold or a gold-based alloy and the surface of the structure is modified with elemental sulfur, or at least the surface of the structure is composed of gold or a gold-based alloy and the surface of the structure is modified with elemental sulfur, and a catalytic metal compound supported on the structure, wherein the catalyst precursor has peaks derived from the catalytic metal compound and also sulfur as analyzed by photoelectron spectroscopy, and wherein the peak derived from sulfur is of the sulfur 1s orbital observed within a range of 2470 eV±2 eV in terms of the peak top position.