Diesel/biodiesel soot oxidation with ceo2 and ceo2-zro2-modified cordierites: a facile way of accounting for their catalytic ability in fuel combustion processes

Química Nova

Rodrigo F. Silva¹  Edimar Deoliveira¹  Paulo C. De Sousa Filho¹  Cláudio R. Neri¹  Osvaldo A. Serra¹ 

[1] ,Universidade de São Paulo Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto Departamento de QuímicaRibeirão Preto SP ,Brasil

关键词: ceria-zirconia catalysts;    diesel;    automotive catalysis;   

DOI  :  10.1590/S0100-40422011000500006

来源: SciELO

【 摘 要 】

CeO2 and mixed CeO2-ZrO2 nanopowders were synthesized and efficiently deposited onto cordierite substrates, with the evaluation of their morphologic and structural properties through XRD, SEM, and FTIR. The modified substrates were employed as outer heterogeneous catalysts for reducing the soot originated from the diesel and diesel/biodiesel blends incomplete combustion. Their activity was evaluated in a diesel stationary motor, and a comparative analysis of the soot emission was carried out through diffuse reflectance spectroscopy. The analyses have shown that the catalyst-impregnated cordierite samples are very efficient for soot oxidation, being capable of reducing the soot emission in more than 60%.

【 授权许可】

CC BY-NC   
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