Raney nickel alloy expanded mesh hydrogenation catalysts
US4513149A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1982 |
| Grant date | Apr 23, 1985 |
| Priority date | — |
| Expiry date | Apr 5, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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 hydrogenation of aromatic compounds 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 9 carbon atoms or a phenyl radical, R.sub.2 is a hydrogen atom or an aliphatic chain containing from about 1 to about 3 carbon atoms, and R.sub.3 and R.sub.4 are hydrogen atoms, hydroxy, or nitro groups. When this catalyst is used, substantially higher reactant flow rates and lower operating temperatures are possible as compared to conventional fluidized bed granular catalysts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.