KINETICS OF THE GAS-SLURRY METHANOL-HIGHER ALCOHOL SYNTHESIS FROM CO CO2/H-2 OVER A CS-CU/ZNO/AL2O3 CATALYST, INCLUDING SIMULTANEOUS FORMATION OF METHYL-ESTERS AND HYDROCARBONS/
Bb. Breman et al., KINETICS OF THE GAS-SLURRY METHANOL-HIGHER ALCOHOL SYNTHESIS FROM CO CO2/H-2 OVER A CS-CU/ZNO/AL2O3 CATALYST, INCLUDING SIMULTANEOUS FORMATION OF METHYL-ESTERS AND HYDROCARBONS/, Catalysis today, 24(1-2), 1995, pp. 5-14
First kinetic results are presented for the gas-slurry methanol-higher
alcohol synthesis from CO/CO2/H-2 (syngas) over a CU0.44Zn0.43Al0.12C
s0.031 catalyst (particle size: 50-75 mu m), slurried in n-octacosane.
Experimental conditions varied as follows: pressure = 20-80 bar, temp
erature = 473-573 K, H-2/CO ratio in the feed = 0.53-3.38, mole fracti
on CO2 in the feed = 0.026-0.037 and space velocity = 0.065 X 10(-3)-1
.395 X 10(-3) Nm(3) s(-1) kg(cat)(-1). Methanol was the major product.
Further, higher 1-alcohols, 2-methyl-1-alcohols, methyl esters, n-par
affins, CO2 and H2O were formed. In contrast to observations in a gas-
solid system, formation of 2-methyl-n-paraffins was negligible. From t
he same model, proposed earlier for the gas-solid systems B.B. Breeman
et al., Chem. Eng. Sci., 49, 24A (1995), the product distributions of
the alcohols, the paraffins and the methyl eaters could be predicted
with average relative deviations of 5.9%, 7.8% and 1.6%, respectively.
The presence of n-octacosane as a slurry liquid appeared to affect su
bstantially both the product distributions and the values of the model
parameters relative to the corresponding gas-solid system.