Photocatalytic Based Degradation Processes of Lignin Derivatives

Table 1

Overview of most frequent bond types found in lignin.

Model linkage^a	W. G. Glasser and H. R. Glasser [19]	Erickson et al. [20]	Nimz [21]
β-Carbon-oxygen-4-aromatic carbon	55	49–51	65
α-Carbon-oxygen-4-aromatic carbon	—	6–8	—
β-Carbon-5-aromatic carbon	16	9–15	6
β-Carbon-1-aromatic carbon	9	2	15
5-Aromatic-carbon-5-aromatic carbon	9	9.5	2.3
4-Aromatic-carbon-5-aromatic carbon	3	3.5	1.5
β-Carbon-β-carbon	2	2	5.5
β-Carbon-β-carbon forming furanic structure	—	—	2
α-Carbon-γ-carbon-oxygen-γ-carbon	10	—	—

% of total phenylpropane units.