Table 1 Results for DMF synthesis from DIMCARB and CO2/H2a

From: Active catalyst construction for CO2 recycling via catalytic synthesis of N-doped carbon on supported Cu

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Entry

Ligand (10 mol%)

Yield (%)b

Sel. (%)

DMF

N(CH3)3

1

None

93.7

41.8

58.2

2

Et3N

90.0

30.3

69.7

3

PhNMe2

89.4

30.3

69.7

4

Py

99.0

44.0

56.0

5

Bipy

91.3

43.6

56.4

6

TMEDA

98.2

52.6

47.4

7

DMEDA

92.1

77.9

22.1

8

1,10-Phen

89.7

86.7

13.3

9c

1,10-Phen

93.0

78.4

21.6

10d

1,10-Phen

98.3

92.0

8.0

11e

1,10-Phen

95.0

97.3

2.7

12f

1,10-Phen

89.6

97.3

2.7

  1. aDIMCARB (0.5 mmol, equal to 1 mmol HNMe2), CuAlOx (100 mg, 9 mmol% Cu), ligand (10 mol%), 1,2-Dimethoxyethane (4 mL), 3 MPa CO2, 7 MPa H2, 160 °C, 24 h
  2. bCombined yield of DMF and N(CH3)3 were determined by GC-FID using 1,4-dioxane as the internal standard material
  3. c1,10-Phen (5 mol%)
  4. d1,10-Phen (20 mol%)
  5. e1,10-Phen (30 mol%)
  6. fThe catalyst was reused at the third run. Bipy: 2,2′-bipyridine; Py: pyridine; TMEDA: N,N,N′,N′-Tetramethylethylenediamine; DMEDA: N,N′-dimethylethylenediamine; 1,10-Phen: 1,10-Phenanthroline
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