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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 31, Number 1
BKCSDE 31(1)
January 20, 2010 

Effect of Bimetallic Pt-Rh and Trimetallic Pt-Pd-Rh Catalysts for Low Temperature Catalytic Combustion of Methane
Margandan Bhagiyalakshmi, Ramani Anuradha, Sang Do Park, Tae Sung Park, Wang Seog Cha, Hyun Tae Jang*
Methane conversion, Bimetallic, Trimetallic, Pt-Rh/Al2O3, Pt-Rh/ZrO2
Monometallic, bimetallic and trimetallic particles consisting of different weight compositions of Pt-Pd-Rh over pure alumina wash coats have been synthesized and their catalytic performance on methane conversion was studied from 150 to 600 oC. Different catalyst formulations with variable Pt, Pd and Rh contents for bimetallic and trimetallic systems were tried and Pt(1.5)Rh(0.3)/Al2O3 and Pt(1.0)Pd(1.0)Rh(0.3)/Al2O3 shows low T50 and T90 temperatures. Bimetallic and trimetallic particle synergism acts as three way catalysts and therefore, all the catalysts show 100% methane conversion. The effect of supports such as ZrO2 and TiO2 on methane combustion was investigated; from T50 and T90 results both Al2O3 and ZrO2 are suitable supports for low temperature methane combustion.
120 - 124
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