Journal
CATALYSTS
Volume 10, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/catal10020229
Keywords
bio-based monomers; amino-esters; hydrogenation; Raney (R)-nickel regeneration
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Funding
- European Union [721290]
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Aiming to synthesize high-value renewable monomers for the preparation of renewable specialty polyamides, we designed a new protocol. Amino-esters, produced via the hydrogenation of unsaturated nitrile-esters, are alternative monomers for the production of these polymers. A high monomer yield can be obtained using a Raney (R)-nickel catalyst despite the drawback of fast deactivation. The hydrogenation of 10-cyano-9-decenoate (UNE11) was tentatively reactivated by three different regeneration procedures: solvent wash, regeneration under hydrogen, and regeneration under sonication. Among these procedures, the in-pot catalyst regeneration (H-2 30 bar, 150 degrees C) demonstrated complete activity recovery and full recycling.
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