Obtaining (Z)-3-hexene with Ni catalysts supported on alumina modified with magnesium precursor

M.J. MACCARRONE; C.R. LEDERHOS; C. BETTI; F. COLOMA-PASCUAL; CARLOS VERA; M.E. QUIROGA

Kazan

Congreso; 12th European Congress on Catalysis - EuropaCat-XII; 2015

The selective hydrogenation of internal alkynes for Z-alkene stereoisomers is applicable inthe petrochemical and pharmaceutical industry. Nickel catalysts are still an interestingalternative low-cost compared with Lindlar or Pd catalysts [1]. This paper evaluates the activityand selectivity of a Ni 1% catalyst in the selective hydrogenation of 3-hexyne modifying thealumina support with a 5 and 10% magnesium precursor with excellent results in conversionvalues (ca.100%) for the reaction time considered.Low-cost monometallic nickel (1wt % of Ni) catalysts unmodified or modified with Mgwere prepared. The Ni1 % catalyst modified with 5% of MgO presented higher values of 3-hexyne total conversion (ca. 100%) and moderate selectivity (at 70%) at 303K. Besides thisprepared catalyst is inexpensive compared to the Lindlar catalyst (5 wt % of Pd) or othersmentioned in the literature