Table 1 Performance comparison between Pt/TiO2 catalysts and previously reported Pt-based catalysts in HCHO oxidation

From: Unravelling platinum nanoclusters as active sites to lower the catalyst loading for formaldehyde oxidation

Catalyst

Pta loading (wt%)

T (°C)

Specific rate (mmol gPt−1 h−1)

Pt dispersionb (%)

TOF (h−1)

T100c (°C)

Ea (kJ mol−1)

Note

Pt-NCd

0.08

30

332.7

62.3

104.2

20

16

This work

Pt-NPd

0.09

30

136.5

45.4

58.7

60

19

This work

Pt -Mixd

0.06

30

57.1

84.3

13.2

80

21

This work

Pt -SACd

0.01

30

9.1

100

1.8

>80

—

This work

Pt/TiO2e

1.0

25

2.38

35.38

1.3

25

—

Ref. 34

Pt/SiO2f

0.1

40

80.4

—

—

~55

—

Ref. 35

Pt/MnO2g

2.0

30

9.2

53.5

3.4

70

—

Ref. 36

Pt/AlOOHh

0.9

RT

53.6

24.9

42

—

—

Ref. 37

PtNi/Al2O3i

0.2

RT

11.2

38.7

5.7

>80

—

Ref. 38

Pt/ZrO2j

0.88

55

83.1

51.3

31.6

30

24.7

Ref. 39

Pt/NaTiOxk

0.5

30

216

—

83.2

120

22.4

Ref. 40

  1. aDetermined by ICP results
  2. bPt dispersion in this work are measured by CO adsorption microcalorimetry and others in the references are obtained by CO chemical adsorption. The Pt dispersion on Pt-SAC can be considered as 100%
  3. cT100 is the reaction temperature at which the formaldehyde was completely removed
  4. Reaction condition: d160 ppm HCHO, 20% O2, He balance, RH = 50%; e24 ppm HCHO, 21% O2, N2 balance, RH = 54%; f300 ppm HCHO, 20% O2, Ar balance; g460 ppm HCHO, 20% O2, He balance; h139 ppm HCHO, 21% O2, N2 balance, RH = 25%; i30 ppm HCHO, 21% O2, N2 balance, RH = 35%; j425 ppm HCHO, 20% O2, N2 balance; k650 ppm HCHO, 21% O2, N2 balance, RH = 35%.
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