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:
Oct. 25, 1977
Filed:
Jul. 01, 1976
Mitsubishi Chemical Industries Ltd., Tokyo, JA;
Abstract
A catalyst for producing a cyclomonoolefin by hydrogenating an aromatic hydrocarbon of the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different and each represents hydrogen or C.sub.1 -C.sub.3 alkyl at 100.degree.-200.degree. C under a hydrogen pressure of 5-100 atm. in an aqueous medium having a pH of 2-7 is prepared by (1) immersing a carrier into an aqueous solution containing at least one cation selected from the group consisting of sodium, potassium, magnesium, calcium, barium, zinc, manganese and iron to obtain a treated carrier, (2) supporting at least one metal selected from the group consisting of ruthenium and rhodium on said treated carrier, and (3) immersing the carrier impregnated with at least one metal selected from the group consisting of ruthenium and rhodium into an aqueous solution containing at least one cation selected from the group consisting of sodium, potassium, magnesium, calcium, barium, zinc manganese and iron.