The Effect of PROX on CO Removal for Micro-Reformer
Date Issued
2009
Date
2009
Author(s)
Wong, Kin-Wa
Abstract
Fuel cell converts the chemical energy within the fossil fuel directly to electrical energy without combustion. Hydrogen is the sources of fuel cell. Through the gas reforming process, methanol solution could be converted into hydrogen-rich gas. But in this hydrogen-rich gas, it has less CO what can make the platinum anode electrode poisoned. The Preferential Oxidation (PROX) can reduce CO in Hydrogen-rich gas.he experimental investigation is performed a PROX reactor to cleanup CO into hydrogen-rich gas. The dimension of reactor is 80mm×80mm×16.5mm with serpentine channel, while those of the flow channels will be 1.5mm×0.75mm×50mm. The 1%Ru-1%Fe-Al2O3 catalyst is directly coated on the flow channel. At this research, the main propose is to observe the effect of temperature, O2/CO ratio and reacting area for the PROX reaction.he experimental results show that CO concentration can obtain less 20ppm form simulated reformates containing 75% H2, 24% CO2, 1% CO in 140℃-180℃. When the O2/CO is increasing, it can make the catalyst activity more. In this experience, O2/CO equals 2 has the best CO conversion. The methane yield apparently increases with raising reaction temperature from 220℃ to 260℃. The effect of reaction area can increase CO conversion in low temperature area about 80℃ to 140℃ and methane yield rises over 220℃.
Subjects
PEMFC
PROX
Hydrogen purification
Methanation
Ru catalyst
Type
thesis
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