Reaksi Paralel Pada Reaksi Hidrogenasi Katalitik cis-Isoeugenol Menjadi 2-Metoksi-4-Propilfenol
ABSTRACT: Catalytic
hydrogenation of eugenol (Mr 164) and isoeugenol (Mr 164) by using synthetic
catalyst Ni/-Al2O3 had been carried out. Eugenol transformation into
2-methoxy-4-propylphenol (Mr 166) as a main product could be achieved in 100%
and no conversion reaction of eugenol into isoeugenol. If the raw material was
96% trans-isoeugenol or 61% cis-isoeugenol then the product was 67% or 92% of
2-methoxy-4-propylphenol. On the catalytic hydrogenation of trans-isoeugenol
into 2-methoxy-4-propylphenol there was no parallel reaction of
trans-isoeugenol into cis-isoeugenol. Conversely, catalytic reaction of
cis-isoeugenol into 2-methoxy-4-propylphenol always followed by conversion
reaction of cis-isoeugenol into trans-isoeugenol. Transformation of
cis-isoeugenol into 2-methoxy-4-propylphenol below 200 oC was equilibrium
reaction and above 200 oC was an irreversible reaction.
Keywords: Catalytic
hydrogenation, cis-isoeugenol
Penulis: Muchalal
Kode Jurnal: jpkimiadd050035
