Conversion of ethanol into linear primary alcohols on gold, nickel, and gold-nickel catalysts

摘要

The direct conversion of ethanol into the linear primary alcohols C (n) H2n+1OH (n = 4, 6, and 8) in the presence of the original mono- and bimetallic catalysts Au/Al2O3, Ni/Al2O3, and Au-Ni/Al2O3 was studied. It was established that the rate and selectivity of the reaction performed under the conditions of a supercritical state of ethanol sharply increased in the presence of Au-Ni/Al2O3. The yield of target products on the bimetallic catalyst was higher by a factor of 2-3 than that reached on the monometallic analogs. Differences in the catalytic behaviors of the Au, Ni, and Au-Ni systems were discussed with consideration for their structure peculiarities and reaction mechanisms.