Synthesis and Catalytic Activity Studies of V/K/Ca and V/Ks/Ce Based Catalysts for Diesel Soot Oxidation
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.
Wei Pan and Jianghong Gong
Y. H. Zhang and J. Z. Xue, "Synthesis and Catalytic Activity Studies of V/K/Ca and V/Ks/Ce Based Catalysts for Diesel Soot Oxidation", Key Engineering Materials, Vols. 336-338, pp. 1995-1998, 2007