Kinetic Study of the Reactions PO + O2 and PO2 + O3 and Spectroscopy of the PO Radical.
Kinetic Study of the Reactions PO + O2 and PO2 + O3 and Spectroscopy of the PO Radical.
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PO O2 和 PO2 O3 反应的动力学研究以及 PO 自由基的光谱。
DOI:
10.1021/acs.jpca.0c06106
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Douglas KM
中科院分区:
文献类型:
--
作者:
Douglas KM
The kinetics of the reactions of PO with O2and PO2with O3were studied at temperatures ranging from ∼190 to 340 K, using a pulsed laser photolysis-laser induced fluorescence technique. For the reaction of PO + O2, there is evidence of both a two- and three-body exit channel, producing PO2+ O and PO3, respectively. Potential energy surfaces of both the PO + O2and PO2+ O3systems were calculated using electronic structure theory and combined with RRKM calculations to explain the observed pressure and temperature dependences. For PO + O2, at pressures typical of a planetary upper atmosphere where meteoric ablation of P will occur, the reaction is effectively pressure independent with a yield of PO2+ O of >99%; the rate coefficient can be expressed by log10(k, 120–500 K, cm3molecule–1s–1) = −13.915 + 2.470 log10(T) – 0.5020(log10(T))2, with an uncertainty of ±10% over the experimental temperature range (191–339 K). With increasing pressure, the yield of PO3increases, reaching ∼90% at a pressure of 1 atm andT= 300 K. For PO2+ O3,k(188–339 K) = 3.7 × 10–11exp(−1131/T)cm3molecule–1s–1, with an uncertainty of ±26% over the stated temperature range. Laser-induced fluorescence spectra of PO over the wavelength range 245–248 nm were collected and simulated usingpgopherto obtain new spectroscopic constants for the ground andv= 1 vibrational levels of theX2Π andA2Σ+states of PO.
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影响因子:
2.4
作者:
J. Carrillo-Sánchez;D. Bones;K. Douglas;G. Flynn;S. Wirick;B. Fegley;T. Araki;B. Kaulich;J. Pl
通讯作者:
J. Carrillo-Sánchez;D. Bones;K. Douglas;G. Flynn;S. Wirick;B. Fegley;T. Araki;B. Kaulich;J. Pl
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
Z. Cai;G. Hirsch;R. Buenker
通讯作者:
R. Buenker
DOI:
--
发表时间:
1986
期刊:
影响因子:
--
作者:
K. N. Wong;W. Anderson;A. J. Kotlar;M. Dewilde;L. J. Decker
通讯作者:
L. J. Decker
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
Hui Liu;D. Shi;Jinfeng Sun;Zun
通讯作者:
Zun
DOI:
--
发表时间:
1986
期刊:
影响因子:
--
作者:
S. Long;S. Christesen;A. P. Force;J. S. Bernstein
通讯作者:
J. S. Bernstein