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Table 3 Frequency and characterization of major Fourier transform Raman peaks in spectra of dilute acid-alone pretreated filter paper and cotton linter samples were flattened in spectra of dilute acid/ferrous ion-pretreated samples

From: Elucidating the role of ferrous ion cocatalyst in enhancing dilute acid pretreatment of lignocellulosic biomass

Pretreatment regions in four studies (peaks/cm)

 

Current study

Liu [13]

Edwards et al.[12, 28]

Fechner et al.[11]

Band assignment

Assigned peaks

    

   2, 895

n/a

n/a

2, 894

C-H stretching

   1, 475

1, 476

1, 478

 

δ (CH2) scissors

   1, 379

1, 380

1, 380

 

δ (CH2)

   1, 336

1, 341

1, 338

 

δ (CH2) wagging, δ (C-O-H)

   1, 294

1, 295

1, 294

 

δ (CH2) twisting

   1, 120

1, 122

1, 122

 

γ (C-O-C) glycosidic bond, symmetric stretching

   1, 097

1, 096

1, 097

 

γ (C-O-C) glycosidic bond, symmetric stretching

Unassigned peaks

    

   519, 457, 438, 380, 341

    
  1. n/a = not applicable.