DIRECT SYNTHESIS OF DIMETHYL ETHER FROM SYNGAS. PART I: PREPARATION OF BIFUNCTIONAL CuO-ZnO/HZSM-5 CATALYSTS BY SUCCESSIVE SINTHESIS AND PHYSICAL MIXTURE.

DIRECT SYNTHESIS OF DIMETHYL ETHER FROM SYNGAS. PART I: PREPARATION OF BIFUNCTIONAL CuO-ZnO/HZSM-5 CATALYSTS BY SUCCESSIVE SINTHESIS AND PHYSICAL MIXTURE.