Dioxin and dibenzofuran like molecular analogues from the pyrolysis of biomass materials—the emerging challenge in bio-oil production

Table 1 The free radical characteristics of bio-oil and biodiesel

Bio-oil/biodiesel	\(\Delta {\mathbf{H}}_{{{\mathbf{P}} - {\mathbf{P}}}}\)	\({\mathbf{g}} - {\mathbf{factor}}\)	Nature of radical	Ref.
Loblolly pine bio-oil	3.2 – 5.2	2.0026 – 2.0033	Carbon/phenoxy–centered	[8]
Cellulose bio-oil	5.01	2.0031	Carbon/oxygen –centered	[9]
Lignin bio-oil	4.92	2.0030	Carbon/phenoxy–centered	[9]
Corn-Stover bio-oil	5.48	2.0028	Carbon-centered	[9]
Corn-Stover bio-oil PL	2.35	2.0028	Carbon-centered	[9]
Commercial biodiesel 100	5.2	2.006	Oxygen-centered	[3]
Commercial biodiesel	0.61	2.007	Oxygen-centered	[41]

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