Role of hydrogen formation and silver phase for methanol-SCR over silver/alumina
Journal article, 2015

Formation of reaction products over silver/alumina during lean NOx reduction with methanol was studied, with and without addition of hydrogen to the feed. The silver phase in silver/alumina was analyzed by UV–vis spectroscopy in order to elucidate the influence of silver loading and different gas environments. Formation of molecular hydrogen and reduction of supported silver species were observed during selective catalytic reduction (SCR) with methanol, without hydrogen in the feed. This availability of hydrogen and the reduction of silver are suggested to contribute to the high low-temperature activity connected to oxygenates (like alcohols) as reducing agents for NOx.

Hydrogen

Lean NOx reduction

Ag/Al2O3

Silver phase

Methanol

Author

Marika Männikkö

Competence Centre for Catalysis (KCK)

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Magnus Skoglundh

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Competence Centre for Catalysis (KCK)

Hanna Härelind

Competence Centre for Catalysis (KCK)

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Catalysis Today

0920-5861 (ISSN)

Vol. 258 454-460

KCK - Kompetenscentrum Katalys 2022-2026

Scania AB (Dnr:2021-036543Pnr:52689-1), 2022-01-01 -- 2026-12-31.

Preem (KCK2022-2026), 2022-01-01 -- 2026-12-31.

Umicore Denmark ApS (KCK2022-2026), 2022-01-01 -- 2026-12-31.

Volvo Group (PO:2435702-000), 2022-01-01 -- 2026-12-31.

Johnson Matthey (2500123383), 2022-01-01 -- 2026-12-31.

Driving Forces

Sustainable development

Areas of Advance

Nanoscience and Nanotechnology

Transport

Energy

Materials Science

Subject Categories (SSIF 2011)

Physical Chemistry

Chemical Process Engineering

DOI

10.1016/j.cattod.2014.11.029

More information

Latest update

4/23/2025