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Bioresources and Bioprocessing

Table 6 Retention time (RT), structure, and lignin-derived monomeric products detected by GC–MS analysis (NIST02 2008)

From: Ce–Zr-based mixed oxide catalyst for oxidative depolymerization of kenaf stalk (biomass) into vanillin

No.

RT (min)

Area (%)

Degradation product

Structure

1

3.19588

16.17023

Acetaldol

C4H8O2

2

7.52577

7.44059

Guaiacol

C7H8O2

3

11.68385

16.66506

4-Hydroxybenzaldehyde

C7H6O2

4

12.13058

30.1524

Vanillin

C8H8O3

5

13.12715

8.64944

Acetovanillone

C9H10O3

6

15.36082

9.25593

Syringaldehyde

C9H10O4

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