Table 1 The best-fitted EXAFS results for Ru1/NC-T catalystsa.

From: Highly selective and robust single-atom catalyst Ru1/NC for reductive amination of aldehydes/ketones

Sample

Shell

CN

R (Å)

σ2 (10−2 Å2)

∆E0 (eV)

r-factor (%)

Ru foil

Ru–Ru

12

2.67

0.4

6.2

1

Ru1/NC-700

Ru–N

4.9

2.09

0.6

−0.7

0.7

Ru1/NC-800

Ru–N

4.3

2.05

0.5

−4.0

0.2

Ru1/NC-900

Ru–N

3.1

2.04

0.5

−3.8

0.4

Ru1/NC-900–800NH3

Ru–N

3.3

2.03

0.5

−0.6

0.9

  1. aCN is the coordination number for the absorber–backscatterer pair, R is the average absorber–backscatterer distance, σ2 is the Debye-Waller factor, and ∆E0 is the inner potential correction. The accuracies of the above parameters are estimated as CN, ±20%; R, ± 1%; σ2, ±20%; ∆E0, ±20%. The data range used for data fitting in k-space (∆k) and R-space (∆R) are 3.0–12 Å−1 and 1.2–3.2 Å, respectively.
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