CuSCR Catalysts Under H2-ICE Exhaust Gas Conditions Cummins, Incorporated

Format:

Book

Conference/Event

Author/Creator:

Kim, Mi-Young, author.

Daya, Rohil, author.

Kamasamudram, Krishna, author.

Conference Name:

WCX SAE World Congress Experience (2026-04-14 : Detroit, Michigan, United States)

Language:

English

Subjects (All):

Hydrogen engines.

Selective catalytic reduction (SCR).

Emissions.

Local Subjects:

Hydrogen engines.

Selective catalytic reduction (SCR).

Emissions.

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2026

Summary:

In the near to mid-term, hydrogen internal combustion engines (H2-ICE) can be a bridge technology for reducing carbon emissions. A few challenges anticipated under lean-burn H2-ICE operation are the significant drop in turbo-out temperatures, combined with higher water content, and the possible presence of unburned hydrogen in the exhaust, which could have a potential impact on performance and durability of the downstream exhaust aftertreatment system, particularly oxidation and SCR catalysts, as these conditions can suppress low-temperature oxidation activity, perturb Cu-site speciation and redox cycling in SCR catalysts, and exacerbate hydrothermal aging under sustained wet operation. This study examines the impact of excess water and residual hydrogen on Cu-SCR durability, active site chemistry, and stability for the case with and without an upstream oxidation catalyst, through aging tests at 450 °C and 550 °C. Changes in Cu redox cycles were assessed through site quantification using multiple titration techniques to determine the influence of excess H2O and H2 on catalyst performance and aging

Notes:

Vendor supplied data

Access Restriction:

Restricted for use by site license