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.:

US 6638890 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 28, 2003

Filed:

Oct. 31, 2002
Applicant:
Inventors:

Michio Tanimoto, Himeji, JP;

Hiromi Yunoki, Himeji, JP;

Daisuke Nakamura, Himeji, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 2/328 ; B01J 2/322 ; B01J 2/372 ; B01J 2/718 ; B01J 2/106 ;
U.S. Cl.
CPC ...
B01J 2/328 ; B01J 2/322 ; B01J 2/372 ; B01J 2/718 ; B01J 2/106 ;
Abstract

A modified carrier carrying on at least a part of an inert carrier surface an oxide which is represented by the formula (1): X Y Z O (wherein X is at least an element selected from alkaline earth metals; Y is at least an element selected from Si, Al, Ti and Zr; Z is at least an element selected from Group IA elements and Group IIIb elements of the periodic table, B, Fe, Bi, Co, Ni and Mn; and O is oxygen; a, b, c and d denote the atomic ratios of X, Y, Z and O, respectively, where a&equals;1, 0<b&lE;100, 0&lE;c&lE;10, and d is a numerical value determined by the extents of oxidation of the other elements) is provided. A catalyst formed with the use of this modified carrier carrying a complex oxide containing Mo and V is useful as a vapor phase catalytic oxidation catalyst, and is particularly suitable as a catalyst for preparing acrylic acid through vapor phase catalytic oxidation of acrolein.


Find Patent Forward Citations

Tanimoto, Michio. (2003). Modified carrier, complex oxide catalyst and process for preparation of acrylic acid (U.S. Patent No. 6638890). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6638890

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