Table 6.
Product distribution of isothermal pyrolysis of lignins

Peak area(counts x10-6)[Peak area %]	H lignin			P lignin
	400 °C	500 °C	600 °C	400 °C	500 °C	600 °C
	Acids	17.34[3.04]	22.66[3.42]	14.24[3.22]	17.17[2.32]	17.05[1.99]	14.63[2.42]
Ketones	-	-	-	-	-	1.25[0.21]
Furans	-	-	-	8.87[1.2]	11.62[1.36]	10.61[1.76]
P-hydroxyphenyl type (H-unit)	-	7.99[1.21]	10.82[2.45]	4.42[0.6]	11.79[1.38]	13.83[2.29]
Guaiacyl type (G-unit)	170.90[29.96]	191.11[28.82]	119.34[26.97]	191.29[25.82]	223.00[26.03]	159.21[26.35]
Syringyl type (S-unit)	135.50[23.76]	149.06[22.48]	102.11[23.08]	112.93[15.24]	130.42[15.22]	92.38[15.29]
Catechol	36.45[6.39]	43.77[6.6]	34.53[7.81]	21.66[2.92]	24.59[2.87]	18.00[2.98]
Aromatic hydrocarbons	-	1.53[0.23]	4.35[0.98]	-	1.23[0.14]	4.01[0.66]