Table 2 Selective hydrogenation of cinnamaldehyde and hydrodeoxygenation of cinnamyl alcohol over various catalysts

From: Selective hydrodeoxygenation of α, β-unsaturated carbonyl compounds to alkenes

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Entry

Catalysts

Step 1a

Step 2b

Conv.1a (%)

Y.1c (%)

Conv.1c (%)

Y. (%)

1d

1e + 1f

1g

1

None

16.8

–

28.9

–

–

–

2

ZIF-8

47.3

12.5

19.6

–

–

–

3

ZnNC-500

29.4

3.7

13.8

–

–

–

4

ZnNC-600

92.5

63.8

13.2

1.9

2.5

–

5

ZnNC-700

30.4

6.5

33.8

1.7

18.5

–

6

ZnNC-800

54.1

37.0

87.5

11.2

66.8

–

7

ZnNC-900

95.0

78.2

99.9

11.0

75.7

4.6

8

ZnNC-1000

41.4

16.8

57.4

12.3

26.8

–

9

Zn(NO3)2

31.8

3.0

20.7

–

–

–

10

ZnO

36.5

8.6

0

–

–

–

11

NC-900

16.8

–

0

–

–

–

  1. Reaction conditions: aCinnamaldehyde (0.2 mmol), catalyst (20 mg), 2-propanol (4 mL), N2 (1 MPa), 150 °C, 11 h.
  2. bCinnamyl alcohol (0.2 mmol), catalyst (20 mg), 2-propanol (4 mL), N2 (1 MPa), 180 °C, 7 h. The conversion of substrate and the yield of products were determined by GC with dodecane as internal standard.
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