Influence of Modification of Zn-Mg(Zr)Si Oxide Systems by Sodium and Potassium on their Catalytic Properties in the Process of Obtaining 1,3-Butadiene from Ethanol

The effect of alkali metal ions (Na+ or K+) on the acid-base and catalytic properties of Zn-Mg(Zr)Si oxide systems in the process of obtaining 1,3-butadiene from ethanol was studied. It was found that the modification of Zn-MgSi oxide systems promotes an increase in the 1,3-butadiene selectivity (at temperatures >= 670 K) by reducing the number of formation sites of by-products. In the composition of Zn-ZrSi oxide systems, alkali metal cation additives lead to a decrease in the ethene and diethyl ether selectivity due to a decrease in the content of strong acid sites that are active in the ethanol dehydration reaction.

Automated summary

This study investigates the effect of alkali metal ions (Na+ or K+) on the acid-base and catalytic properties of Zn-Mg(Zr)Si oxide systems during the production of 1,3-butadiene from ethanol. The findings show that modifying Zn-MgSi oxide systems can increase the selectivity of 1,3-butadiene (at temperatures >= 670 K) by reducing the number of by-product formation sites. In the composition of Zn-ZrSi oxide systems, the addition of alkali metal cation leads to a decrease in ethene and diethyl ether selectivity due to the reduction of strong acid sites that are active in the ethanol dehydration reaction.