Methanol Assisted Lean NOx Reduction Over Ag-Al2O3-Influence of Hydrogen and Silver Loading
Artikel i vetenskaplig tidskrift, 2015

The influence of hydrogen and silver loading on lean NOx reduction with methanol over Ag-Al2O3 are investigated by flow-reactor experiments, H-2-TPR, TEM and XPS. Reduction of silver at low temperatures over Ag-Al2O3 with high silver loading, suggests involvement of silver species/particles that are large (which is supported by the TEM analysis) and/or loosely bound to the support. The silver species reduced by hydrogen cannot be directly associated with the activity for NOx reduction under methanol-SCR conditions. Furthermore, the activity for NOx reduction increases slightly at low temperatures when hydrogen is added to the feed. However, also without co-fed hydrogen, a high low-temperature activity is achieved for methanol assisted lean NOx reduction over Ag-Al2O3.

Lean NOx reduction

Methanol

Hydrogen

Ag/Al2O3

Silver

Författare

Marika Männikkö

Magnus Skoglundh

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Kompetenscentrum katalys

Hanna Härelind

Kompetenscentrum katalys

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Topics in Catalysis

1022-5528 (ISSN) 1572-9028 (eISSN)

Vol. 58 14-17 977-983

Ämneskategorier

Kemi

DOI

10.1007/s11244-015-0466-x

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Senast uppdaterat

2019-12-02