| 摘要 |
A fuel for a fuel cell system comprises wherein said fuel comprises 5 mol. % or more of hydrocarbons, 0.5-20 mass % of oxygenates therein in terms of an oxygen content batsed on the whole fuel and 5 mol. % or less of hydrocarbons having carbon numbers of 2 or less, 90 mol. % or more of hydrocarbons having carbon numbers of 3 and 4 in total, 5 mol. % or less of hydrocarbons having carbon numbers of 5 or more and is a gaseous phase under normal temperature and pressure. The fuel for a fuel cell system has a high power generation quantity per weight, a high power generation quantity per CO2 emission, a low fuel consumption, a small evaporative gas (evapo-emission), small deterioration of a fuel cell system comprising such as a reforming catalyst, a water gas shift reaction catalyst, a carbon monoxide removal catalyst, fuel cell stacks and the like to maintain the initial performances for a long duration, good handling properties in view of storage stability and inflammability, and a low preheating heat quantity.
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