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:
May. 27, 2008
Filed:
Mar. 11, 2005
Hiromi Yunoki, Himeji, JP;
Michio Tanimoto, Himeji, JP;
Hiromi Yunoki, Himeji, JP;
Michio Tanimoto, Himeji, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
A catalyst for production of acrylic acid which catalyst is so high in activity as to give a still higher selectivity of acrylic acid or a long-catalytic-life-time catalyst for production of acrylic acid which catalyst is so high in activity as to be able to give a high acrylic acid yield while suppressing the temperature rise of the oxidation reaction to a low one; and processes for production of acrylic acid using these catalysts. The catalyst includes an oxide and/or a composite oxide as an essential catalytic component, wherein the oxide and/or the composite oxide has a metal element composition shown by general formula (1):MoVWCuO  (1)(wherein: when a=12, then 1≦b≦14, 0≦c≦12, 0 ≦d≦10, and 0<c+d; and x is a numerical value determined by oxidation states of the elements);