Consecutively Preparing D-Xylose, Organosolv Lignin, and Amorphous Ultrafine Silica from Rice Husk

Table 4

Explanation of IR spectrograph.

Position/cm^−1	Band origin
3400	–OH stretching
2943	C–H stretching
1706	C=O stretching nonconjugated to the aromatic ring
1610	C=O stretching conjugated to the aromatic ring
1520	Aromatic ring vibrations
1462	Aromatic ring vibrations C–H deformations
1275	Aromatic ring vibrations of guaiacyl
1201	C–O stretching of syringy
1124	Aromatic ester
1027	C–H and C–O deformation
820	Syringy C–H vibrations