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. 25, 2008
Filed:
Apr. 18, 2006
Naohiro Fukumoto, Aioi, JP;
Michio Tanimoto, Himeji, JP;
Naohiro Fukumoto, Aioi, JP;
Michio Tanimoto, Himeji, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
A support for a gas-phase oxidation catalyst, the support including a solid acid, of which acid strength (H) meets an inequality: −5.6≦H≦1.5; a gas-phase oxidation catalyst including the above support and a complex oxide containing molybdenum and vanadium as essential components, the complex oxide being supported on the support; a process for producing acrylic acid by gas-phase catalytic oxidation of acrolein with molecular oxygen, the process including carrying out the gas-phase catalytic oxidation in a presence of the above gas-phase oxidation catalyst; and a process for producing the above support, the process including controlling an acid strength (H) of a solid acid so as to meet an inequality: −5.6≦H≦1.5 by adjusting a calcination temperature in a preparation of the solid acid contained in the support.