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. 2021 Jul 8;6(28):18123–18134. doi: 10.1021/acsomega.1c01942

Table 3. Summary of the Absolute Measurements of k1a.

T (K) number of kinetic runs [D9B] (1013molecule cm–3) k1 (10–12) cm3 molecule–1 s–1
298b 9 0.80–10.1 3.60 ± 0.41
335b 11 0.55–9.68 3.40 ± 0.39
425c 9 0.49–8.78 4.11 ± 0.47
500c 9 0.13–11.1 4.70 ± 0.54
595c 8 0.67–11.2 5.79 ± 1.32d
670c 11 0.14–5.14 8.12 ± 1.85d
750c 7 0.32–4.36 9.80 ± 2.23d
a

The total pressure in the reactor was 2 Torr, with the linear flow velocity in the reactor between 1980 and 2100 cm s–1 and OH radical concentrations in the range of (2–3) × 1011 molecule cm–3. The combined uncertainty on k1 was estimated to be about 11% by adding in quadrature the statistical error (≤4%) and that on the measurements of the absolute concentration of D9B (∼10%), flows (3%), pressure (2%), and temperature (1%).

b

Halocarbon wax-coated reactor.

c

Uncoated quartz reactor.

d

The error includes the systematic uncertainty and 20% conservative error to include OH regeneration of high-temperature studies.