Deactivation of a Pd/Pt Bimetallic Oxidation Catalyst Used in a Biogas-Powered Euro VI Heavy-Duty Engine Installation
Artikel i vetenskaplig tidskrift, 2019

The reduction of anthropogenic greenhouse gas emissions is crucial to avoid further warming of the planet. We investigated how effluent gases from a biogas powered Euro VI heavy-duty engine impact the performance of a bimetallic (palladium and platinum) oxidation catalyst. Using synthetic gas mixtures, the oxidation of NO, CO, and CH4 before and after exposure to biogas exhaust for 900 h was studied. The catalyst lost most of its activity for methane oxidation, and the activity loss was most severe for the inlet part of the aged catalyst. Here, a clear sintering of Pt and Pd was observed, and higher concentrations of catalyst poisons such as sulfur and phosphorus were detected. The sintering and poisoning resulted in less available active sites and hence lower activity for methane oxidation.

emission control

engine bench

oxidation catalyst

methane

biogas

catalyst deactivation

Författare

Johanna Englund

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

Sandra Dahlin

Kungliga Tekniska Högskolan (KTH)

Andreas Schaefer

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Lennart Andersson

Per-Anders Carlsson

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Per-Anders Carlsson Group

Lars J Pettersson

Kungliga Tekniska Högskolan (KTH)

Magnus Skoglundh

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

Catalysts

2073-4344 (ISSN)

Vol. 9 12 1014

Ämneskategorier

Kemiteknik

Materialkemi

DOI

10.3390/catal9121014

Mer information

Skapat

2019-12-17