METAL IMPREGNATED AMORPHOUS SILICATES FOR THE SELECTIVE CONVERSION OF ETHANOL TO BUTADIENE

摘要

The present invention relates to a catalyst for the preparation of butadiene comprising Hf and two or more further catalytically active metals M1 and M2, wherein the two or more fur- ther catalytically active metals M1 and M2 are selected from the group consisting of Zr, Zn, Cu and combinations of two or more thereof, and wherein M1 is different from M2; as well as to a process for the preparation of butadiene comprising (i) providing a gas stream G-1 comprising ethanol; (ii) contacting the gas stream G-1 provided in (i) with theinventive catalyst, thereby obtaining a gas stream G-2 comprising butadiene; wherein the catalyst comprises Hf and two or more further catalytically active metals M and M2, wherein the twoor morefurther catalytically active metals M1 and M2 are selected from the group consisting of Zr, Zn, Cu and combinations of two or more thereof, and wherein M1 is different from M2, as well as to the use of the catalyst comprises Hf and two or more further catalytically active 1 metals M1 and M2, wherein the twoor morefurther catalytically active metals M1 and M2 are selected from the group consisting of Zr, Zn, Cu and combinations of two or more thereof, and wherein M1 is different from M2.