Catalytic dehydrogenation of ethanol over zinc-containing zeolites

Catalytic dehydrogenation of ethanol produces acetaldehyde, an important precursor for several value-added chemicals such as acetic acid and acetate esters. In this paper, we demonstrate that Zn-containing MFI zeolites are highly active selective catalysts process. Furthermore, show their activity selectivity depend on the chemical composition preparation catalysts. The best catalyst comprises 5 wt% Zn Silicalite-1 zeolite results in 65.2% conversion 94.5% towards acetaldehyde at 400 ?. We relate high to absence Brønsted acidic silanol groups, which suppresses dehydration into ethylene. while pure HZSM-5 NaZSM-5 result products, ethylene diethyl ether, also confirms is site. Finally, compare different procedures Zn-species may be catalytic reaction.