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Science 最新催化相关文献-From Heavy Fuels to Hydrogen
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From Heavy Fuels to Hydrogen Biomass can be converted in oils and heavy liquids, but for many applications, it is desirable to further process these fuels into hydrogen or synthesis gas (a mixture of CO and H2). However, the low volatility of these liquids often leads to long contact times with catalysts, and often some of the fuel is converted to carbon, which deactivates the catalyst. Salge et al. (p. 801) find that if heavy fuels such as soy oil or biodiesel are sprayed in the presence of O2 as fine droplets onto already-hot rhodium-cerium catalysts, the heat of reaction causes the droplet to further break up and fully convert to H2 (along with CO and CO2, the other main products) without any added heat. These reactions are very fast (total contact times of 50 milliseconds or less), and no deactivation was seen after 20 hours of operation. [ Last edited by berlin on 2006-11-13 at 13:51 ] |
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