Full glycerol conversion and acrolein selectivity of 73% were reached after 6 h of TOS at 553 K. Apart from the excessive exercise of the catalyst, Vape Outlet the authors discover that the acrolein selectivity elevated from 55 to 73% with the increase in TOS from 1 to six h, associated to the rise of coke formation over the catalyst. The catalysts exhibit a selectivity to acrolein of roughly 72%, at almost total glycerol conversion at 573 K. ZrNbO catalysts nonetheless exhibited 82% conversion effectivity after 177 h on stream, whereas its acrolein selectivity stays unimpaired.

It is generally accepted that the Brønsted acidity promotes the glycerol dehydration reaction to proceed via the acrolein route (reaction 2). Some experimental research have demonstrated the optimistic affect of the focus of Brønsted acid websites on the acrolein yield, in addition to the relationship of Lewis websites on the production of acetol. Catalysts of tungsten, zirconium, and niobium oxides have also shown exercise in the glycerol dehydration reaction.

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