Petroleum Diesel and Biodiesel Fuels Used in a Direct Hydrocarbon Phosphoric Acid Fuel Cell

Table 1

Carbon types in diesel fuels.

	n-hexadecane	Petroleum diesel	Canola biodiesel	Soybean biodiesel
CH (olefinic)	0%	—	6.8%	8.5%
CH (aromatic)	0%	2.7%	0%	0%
CH2 (total)	82.4%	>70%	76.3%	74.1%
CH–CH2–CH	0%	—	1.7%	3.8%
–(CO)–CH2	0%	—	5.7%	5.8%
–(CO)–CH2–CH2–	0%	—	5.9%	5.9%
–CH2–CH2–CH=CH	0%	—	10.4%	9.5%
––	82.4%	—	52.6%	49.1%
C–CH3	17.6%	—	8.7%	8.8%
O–CH3	0%	—	8.2%	8.6%
H : C ratio	2.125	1.84	1.85	1.83