Fuel for fuel cell system

A fuel for a fuel cell system comprising 5 vol. % or more of hydrocarbons based on the whole fuel, and 0.5-20 mass % of oxygenates in terms of an oxygen content based on the whole fuel, wherein a content of hydrocarbon compounds having a carbon number of 4 is 15 vol. % or less, a content of hydrocarbon compounds having a carbon number of 5 is 5 vol. % or more, a content of hydrocarbon compounds having a carbon number of 6 is 10 vol. % or more, a content of hydrocarbon compounds having carbon numbers of 7 and 8 in total is 20 vol. % or more, a content of hydrocarbon compounds having carbon numbers of 10 or more is 20 vol. % or less, and heat capacity of the fuel is 2.6 kJ/kg ° C. or less at 15° C. and 1 atm in liquid phase.

A fuel for a fuel cell system comprising 5 vol. % or more of hydrocarbons based on the whole fuel, and 0.5-20 mass % of oxygenates in terms of an oxygen content based on the whole fuel, wherein a content of hydrocarbon compounds having a carbon number of 4 is 15 vol. % or less, a content of hydrocarbon compounds having a carbon number of 5 is 5 vol. % or more, a content of hydrocarbon compounds having a carbon number of 6 is 10 vol. % or more, a content of hydrocarbon compounds having carbon numbers of 7 and 8 in total is 20 vol. % or more, a content of hydrocarbon compounds having carbon numbers of 10 or more is 20 vol. % or less, and heat of vaporization of the fuel is 400 kJ/kg or less.

A fuel for a fuel cell system comprising 5 vol. % or more of hydrocarbons based on the whole fuel, and 0.5-20 mass % of oxygenates in terms of an oxygen content based on the whole fuel, wherein a content of hydrocarbon compounds having a carbon number of 4 is 15 vol. % or less, a content of hydrocarbon compounds having a carbon number of 5 is 5 vol. % or more, a content of hydrocarbon compounds having a carbon number of 6 is 10 vol. % or more, a content of hydrocarbon compounds having carbon numbers of 7 and 8 in total is 20 vol. % or more, a content of hydrocarbon compounds having carbon numbers of 10 or more is 20 vol. % or less, and Reid vapor pressure of the fuel is 10 kPa or more and less than 100 kPa.

A fuel for a fuel cell system comprising 5 vol. % or more of hydrocarbons based on the whole fuel, and 0.5-20 mass % of oxygenates in terms of an oxygen content based on the whole fuel, wherein a content of hydrocarbon compounds having a carbon number of 4 is 15 vol. % or less, a content of hydrocarbon compounds having a carbon number of 5 is 5 vol. % or more, a content of hydrocarbon compounds having a carbon number of 6 is 10 vol. % or more, a content of hydrocarbon compounds having carbon numbers of 7 and 8 in total is 20 vol. % or more, a content of hydrocarbon compounds having carbon numbers of 10 or more is 20 vol. % or less, and research octane of the fuel is 101.0 or less.

A fuel for a fuel cell system comprising 5 vol. % or more of hydrocarbons based on the whole fuel, and 0.5-20 mass % of oxygenates in terms of an oxygen content based on the whole fuel, wherein a content of hydrocarbon compounds having a carbon number of 4 is 15 vol. % or less, a content of hydrocarbon compounds having a carbon number of 5 is 5 vol. % or more, a content of hydrocarbon compounds having a carbon number of 6 is 10 vol. % or more, a content of hydrocarbon compounds having carbon numbers of 7 and 8 in total is 20 vol. % or more, a content of hydrocarbon compounds having carbon numbers of 10 or more is 20 vol. % or less, and oxidation stability of the fuel is 240 minutes or longer.

A fuel for a fuel cell system comprising 5 vol. % or more of hydrocarbons based on the whole fuel, and 0.5-20 mass % of oxygenates in terms of an oxygen content based on the whole fuel, wherein a content of hydrocarbon having a carbon number of 4 is 15 vol. % or less, a content of hydrocarbon compounds having a carbon number of 5 is 5 vol. % or more, a content of hydrocarbon compounds having a carbon number of 6 is 10 vol. % or more, a content of hydrocarbon compounds having carbon numbers of 7 and 8 in total is 20 vol. % or more, a content of hydrocarbon compounds having carbon numbers of 10 or more is 20 vol. % or less, and density of the fuel is 0.78 g/cm3 or less.

A fuel for a fuel cell system comprising 5 vol. % or more of hydrocarbons based on the whole fuel, and 0.5-20 mass % of oxygenates in terms of an oxygen content based on the whole fuel, wherein said fuel has distillation properties such that the initial boiling point in distillation is in the range from 24° C. to 50° C., the 10 vol. % distillation temperature is in the range from 35° C. to 70° C., the 90 vol. % distillation temperature is in the range from 100° C. to 180° C., and the final boiling point in distillation is in the range from 130° C. to 210° C.