Table 3 Chemical composition of the prepared CNF samples (in wt.%, dry basis) and the concentration of surface –SO3H groups (in mmol/g).

From: Production of valuable chemicals from glycerol using carbon fiber catalysts derived from ethylene

Sample

C

H

N

S

Oa

–SO3Hb

CNF1

97.4

0.2

0.1

0.0

2.3

0.00

CNF2

97.0

0.2

0.1

0.0

2.7

0.00

CNF1_BDS

92.8

0.4

0.4

1.0

5.5

0.31

CNF1_H2SO4

94.6

0.2

0.1

0.3

4.8

0.09

CNF2_BDS

95.1

0.3

0.3

0.6

3.7

0.19

CNF2_H2SO4

96.0

0.2

0.1

0.3

3.5

0.09

  1. aCalculated by difference.
  2. bCalculated from the content of sulfur.
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