Ceria-zirconia Nanocatalysts for Diesel Soot Combustion

Format:

Conference/Event

Author/Creator:

Piumetti, Piumetti, author.

Contributor:

Bensaid, Samir

Russo, Nunzio

Conference Name:

12th International Conference on Engines & Vehicles (2015-09-13 : Capri, Italy)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2015

Summary:

A set of ceria-zirconia nanocatalysts with different Zr-contents and structural properties was prepared to study the effect of both the Zr-amount and surface-dependent activity towards soot combustion in "loose" and "tight" soot-catalyst contact. The properties of the catalysts were examined using several physico-chemical techniques. The best soot oxidation activities were achieved for the Ce0.9Zr0.1O2-NP catalyst (NP means nano-polyhedra and 0.9 indicates the atomic ratio of Ce/Ce+Zr), due to its easier reducibility, compared to high-surface area catalysts with the same Ce/Zr ratio. Moreover, better performances were reached for Ce0.9Zr0.1O2-NP, than similar nano-polyhedra with higher Zr-amounts (denoted as CexZr1-xO2-NP, where x = 0.8 or 0.7). On the other hand, worse activities were obtained for both mesoporous and microporous catalysts with the same Ce/Zr ratio

Notes:

Vendor supplied data

Publisher Number:

2015-24-2514

Access Restriction:

Restricted for use by site license