Catalyst and method for hydrogenation of 4,4′-methylenedianiline
US9399615B2 · kind B2 · utility
2Cited by
51References
10Claims
0Family size
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Key dates
| Filing date | May 7, 2015 |
| Grant date | Jul 26, 2016 |
| Priority date | — |
| Expiry date | May 7, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is a catalyst for hydrogenation of 4,4′-methylenedianiline (MDA), including a support, a magnesium-aluminum oxide layer covering the support, and a rhodium-ruthenium active layer loaded on the magnesium-aluminum oxide layer, wherein the rhodium and the ruthenium of the rhodium-ruthenium active layer have a weight ratio of 40:60 to 10:90. The hydrogenation catalyst can be collocated with hydrogen for hydrogenation of the MDA to form bis(para-amino cyclohexyl) methane (PACM), and the PACM contains 0 mol % to 25 mol % of (t,t)-isomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.