Table 2 Chemoselective hydrogenation of 3-nitrostyrene on different Pt/FeOx catalysts*.

From: FeOx-supported platinum single-atom and pseudo-single-atom catalysts for chemoselective hydrogenation of functionalized nitroarenes

Entry

Catalyst

Time (min)

Conv. (%)

Sel. (%)

TOF (molconv. h−1 molPt−1 )

1

0.08%Pt/FeOx-R200

49

95.6

98.4

1494

2

0.08%Pt/FeOx-R250

50

96.5

98.6

1514

3†

0.08%Pt/FeOx-R250

7

88.8

91.1

11064

4

0.31%Pt/FeOx-R250

67

95.8

94.4

1506

5

0.75%Pt/FeOx-R250

73

96.7

92.6

1324

6

2.73%Pt/FeOx-R250

110

97.8

92.9

933

7‡

4.30%Pt/FeOx-R250

34

94.2

92.7

762

8

0.2%Pt/TiO2-R450

840

96.8

94.0

88

9

0.08%Pt/SiO2

65

87.9

46.9

—

10

0.08%Pt/Al2O3

158

87.3

27.8

—

11

Fe3O4

210

—

—

—

12

Fe2O3

240

—

—

—

  1. *Reaction conditions: T=40 °C, P=3 bar, Pt/substrate=0.08%; 5 ml reaction mixture: 0.5 mmol 3-nitrostyrene, toluene as solvent, O-xylene as internal standard.
  2. †T=80 °C, P=10 bar.
  3. ‡Pt/substrate=0.45%.
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