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:
Mar. 05, 1985
Filed:
Apr. 05, 1982
Thomas J Gray, Guilford, CT (US);
Norman G Masse, Wallingford, CT (US);
Richard A Hagstrom, Cheshire, CT (US);
Olin Corporation, Cheshire, CT (US);
Abstract
Hydrogenation processes utilizing improved Raney nickel alloy catalysts are disclosed. The catalyst comprises a monolithic mesh type structure of a nickel alloy having an integral Beta phase Raney Ni.sub.x M.sub.1-x coating on its outer surfaces, where M is a catalytic activator selected from the group consisting of molybdenum, ruthenium, tantalum and titanium and where x, the weight fraction of nickel in the combined alloy, is between about 0.80 and about 0.95. The catalyst is effective in processes for hydrogenating an amine-substituted aromatic compound of the type ##STR1## wherein K is either benzene or naphthalene, R.sub.1 is a hydrogen atom or an aliphatic chain containing from about 1 to about 12 carbon atoms or a phenyl radical, R.sub.2 is a hydrogen atom, an amine group or an aliphatic chain containing from about 1 to about 3 carbon atoms, R.sub.3 is hydrogen or an amine group, and R.sub.4 is an amine group. When this catalyst is used, substantially higher reactant flow rates and lower operating temperatures are possible as compared to conventional fluidized bed granular catalysts.