Kinetic modeling of H2-assisted C3H6 selective catalytic reduction of NO over silver alumina catalyst
Journal article, 2015

A global kinetic model was developed for C3H6-SCR consisting of NO oxidation, C3H6 oxidation and C3H6-SCR reactions with and without H-2 over Ag-Al2O3. The model is based on a dual role of H-2 to remove inhibiting nitrates from the active sites as well as to modify/form new active Ag sites. For model development, a range of temperature programmed reaction (TPR) and transient feed experimental conditions were used. The proposed model was eventually also validated with additional transient experimental data. The kinetic model proposed in this study predicts the experimental data well for a wide-range of feed conditions. Evaluation of mass transfer resistance in the washcoat indicated that during H-2-assisted C3H6-SCR, mild internal mass transfer resistance for NO was predicted to be important already at 250 degrees C.

H2 effect

Silver alumina

Kinetic modeling

C3H6-SCR

Author

Muhammad Mufti Azis

Competence Centre for Catalysis (KCK)

Chalmers, Chemistry and Chemical Engineering, Chemical Technology, Chemical Reaction Engineering

Hanna Härelind Ingelsten

Competence Centre for Catalysis (KCK)

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Applied Surface Chemistry

Derek Creaser

Chalmers, Chemistry and Chemical Engineering, Chemical Technology, Chemical Reaction Engineering

Competence Centre for Catalysis (KCK)

Chemical Engineering Journal

1385-8947 (ISSN)

Vol. 278 394-406

Areas of Advance

Transport

Subject Categories

Chemical Process Engineering

DOI

10.1016/j.cej.2014.10.057

More information

Latest update

11/5/2018