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Synthesis and Catalytic Activity Studies of V/K/Ca and V/Ks/Ce Based Catalysts for Diesel Soot Oxidation

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Abstract:

The catalysts based on V/K/Ca and V/Ks/Ce systems for diesel soot catalytic oxidation were synthesized onto the porous alumina substrates. Both catalyst systems showed a good catalytic oxidation activity. The V/K/Ca system exhibited the lowest oxidation onset temperature (OOT) of about 359oC with a composition of V/K/Ca =1:1:0.1 where the V and Ca and/or K elements could form a kind of amorphous phase that determined the catalytic activity. The V/Ks/Ce system displayed the lowest OOT of about 350oC with a composition of V/Ks/Ce = 1:2:0.1 where the K2SO4 and K5V2O3(SO4)4 phases could contribute most to the catalytic activity.

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High-Performance Ceramics IV View Preview

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Periodical:

Key Engineering Materials (Volumes 336-338)

Pages:

1995-1998

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.336-338.1995

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Online since:

April 2007

Authors:

Yong Heng Zhang, Jian Zhong Xue

Keywords:

Catalyst, Diesel Soot, Oxidation, V2O5

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