Ethylene and diethyl-ether production by dehydration reaction of ethanol over different heteropolyacid catalysts

Date

2007-09-01

Author

Varisli, Dilek
Doğu, Timur
Dogu, Gulsen

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Dehydration reaction of ethanol was investigated in a temperature range of 140-250 degrees C with three different heteropolyacid catalysts, namely tungstophosphoricacid (TPA), silicotungsticacid (STA) and molybdophosphoricacid (NIPA). Very high ethylene yields over 0.75 obtained at 250 degrees C with TPA was highly promising. At temperatures lower than 180 degrees C the main product was diethyl-ether. Presence of water vapor was shown to cause some decrease of catalyst activity. Results showing that product selectivities did not change much with the space time in the reactor indicated two parallel routes for the production of ethylene and DEE. Among the three HPA catalysts, the activity trend was obtained as STA > TPA > MPA.

Subject Keywords

Heteropolyacid catalysts, Catalyst selectivity, Catalyst activation, Kinetics, Tungstophosphoricacid, Ethylene, Diethylether, Reaction engineering

URI

https://hdl.handle.net/11511/30365

Journal

CHEMICAL ENGINEERING SCIENCE

DOI

https://doi.org/10.1016/j.ces.2007.01.017

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

D. Varisli, T. Doğu, and G. Dogu, “Ethylene and diethyl-ether production by dehydration reaction of ethanol over different heteropolyacid catalysts,” CHEMICAL ENGINEERING SCIENCE, pp. 5349–5352, 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30365.