000			01988nab a2200205 4500
005			20260520000846.0
008			260224s2009 xxu
245	0	0	_aKinetics and product distributions for thermal cracking of a kerosene-based aviation fuel
260			_a _b _cjul./ago. 2009
270			_a15/06/2010 ; 15/06/2010
300			_a4 p. ; 4021-4024
520			_aTranscripción del resumen del autor. Thermal cracking reactions of a kerosene-based aviation fuel were carried out in a constant-volume reactor, and the kinetics were investigated at different temperatures from 663 to 703 K. The gaseous and liquid products collected from the efflux cooled to room temperature at atmospheric pressure were determined by gas chromatography and gas chromatography-mass spectrometry. The major hydrocarbon components in the gaseous phase were methane, ethane, ethene, propane, and propene; methane had the highest content among them. In the liquid effluence, the contents of components with carbon atom number higher than C11 decreased while those with lower carbon atom number clearly increased with the temperature or reaction time increasing. The gas yield ratios increased with the reaction temperature or time increasing. The thermal cracking kinetic process was correlated well by the pseudo first-order kinetic equation. The correlation followed that the rate constants were in the range 0.163 × 10-2 h-1 at 663 K to 2.809 × 10-2 h-1 at 703 K. The Arrhenius parameters were then derived with the values of the apparent activation energy Ea of 280 ± 6.5 kJ mol-1 and the logarithm of the pre-exponential factor, log A = 19.3 ± 0.5. The values were in reasonable agreements with those for the first-order decomposition of the chain alkanes such as n-dodecane.
581			_a4
773	0		_tEnergy & fuels _g23
942			_cARTICULO
100	1		_aFang, Wenjun _941594
100	1		_aXie, Wenjie _941595
100	1		_aXing, Yan _938233
999			_c171077 _d171077