Table 5. Calculation of the Relative Amount (fraction) of Surface Complexes I (Scheme 1A), II (Scheme 1B), III (Scheme 1C), and IV (Scheme 1D) According to TPD-MS Data^a.

acid, triglyceride, biomass	surface complex	Tmax, °C	m/z	∫(I(m/z))	%	Asurf, mmol·g–1	n	E#, kJ · mol–1	k0, s–1	ΔS#, cal·K–1 ·mol–1	R2
Fatty Acids
ethanoic (0.3 mmol·g–1)	I	72	60	330	49	0.147	1	72*
	II	127	60	250	37	0.111	1	83*
	III/IV	326	42	93	14	0.042	1	104	4.27 × 106	–30	0.924
butanoic (0.4 mmol·g–1)	I	85	60	53	48	0.192	1	75*
	II	154	60	38	35	0.14	1	89*
	III/IV	354	55	14	13	0.052	1	104	1.55 × 106	–31	0.930
octadecanoic (0.6 mmol·g–1)	I	62	60	38	30	0.18	1	70*
	II
	III/IV	380	55	89	70	0.42	1	113	5.04 × 106	–30	0.977
		377	70				1	113	4.49 × 106	–30	0.940
		378	84				1	115	7.21 × 106	–29	0.956
		383	98				1	115	7.20 × 106	–29	0.976
		381	112				1	116	7.07 × 106	–29	0.914
Triglyceride
glyceryl trimyristate		358	126				1	110	6.16 × 106	–29	0.960
		354	112				1	111	6.99 × 106	–29	0.941
		354	98				1	111	7.77 × 106	–28	0.985
		354	84				1	111	8.73 × 106	–28	0.989
		358	70				1	110	6.60 × 106	–29	0.990
		351	55				1	109	4.32 × 106	–30	0.957
Waste Oil Crop Biomass
rapeseed meal		∼360	112
		367	98				1	113	5.30 × 106	–29	0.930
		362	84				1	110	3.24 × 106	–30	0.957
		362	70				1	113	5.72 × 106	–29	0.911
		367	55				1	114	5.14 × 106	–29	0.944

^aKinetic parameters (temperature of maximum reaction rate T_max, reaction order n, activation energy E^≠, pre-exponential factor k₀, change of activation entropy ΔS^≠) obtained during the pyrolysis of fatty acids, glyceryl trimyristate, and rapeseed meal over silica. *, Calculated approximately from equation E^#= 25RT_max.