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Kinetic modeling of autothermal reforming of dimethyl ether

Derek Creaser (Institutionen för kemi- och bioteknik, Kemisk reaktionsteknik) ; Marita Nilsson ; Lars Pettersson ; Jazaer Dawody
Industrial & Engineering Chemistry Research (0888-5885). Vol. 49 (2010), p. 9712-9719.
[Artikel, refereegranskad vetenskaplig]

A global kinetic model was developed for the autothermal reforming of dimethyl ether (DME) over a Pd-Zn/Al2O3 catalyst on a cordierite monolith. A kinetic model consisting of five key overall reactions was found to capture the main features of experimental data. The modeling also accounted for heat transport effects in the reactor that are of importance when coupling the exothermic oxidation reactions with endothermic steam reforming reactions. The modeling confirmed that oxidation reactions dominate near the inlet of the reactor, generating a local hot spot. The heat from oxidation reactions accelerates the reforming reactions. Water adsorption was found to have a weak detrimental influence on the activity. Based on the model, the influence of the reactor scale and oxygen supply by air feed on the performance of the reactor was examined.

Nyckelord: Dimethyl ether, Autothermal reforming, kinetic modeling, hydrogen



Denna post skapades 2010-10-13. Senast ändrad 2015-03-30.
CPL Pubid: 127564

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Kemisk reaktionsteknik (2005-2014)

Ämnesområden

Processkemi
Katalys

Chalmers infrastruktur