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:
Sep. 27, 1988
Filed:
Dec. 17, 1985
Abstract
The activity of a tellurium-free metal oxide catalyst used for ammoxidation of organic compounds at a temperature of from 300.degree. C. to 600.degree. C. is improved in the presence of (a) elemental tellurium or a tellurium compound which is in contact with said catalyst or in the presence of (a) elemental tellurium or a tellurium compound and (b) a molybdenum compound which are in contact with said catalyst. This activity improvement process can be applied to both the fresh catalysts and the spent catalyst having a deteriorated activity. The above described component (a) is preferably composed of a tellurium containing solid to be used in a state of a dry physical mixture with said catalyst. The above described components (a) and (b) are preferably composed of a tellurium containing solid and a molybdenum containing solid respectively or a tellurium-molybdenum containing solid to be used in a state of a dry physical mixture with said catalyst. The tellurium containing solid, the molybdenum containing solid or the tellurium-molybdenum containing solid may be at least a member selected from the following group: