Reaction between Criegee Intermediate CH2OO and Isobutyraldehyde: Kinetics and Atmospheric Implications

Liu，Siyue1,2; Chen，Yang2,3,4; Jiang，Haotian2,4,5; Shi，Jiayu2,6; Ding，Hongbin1; Yang，Xueming2,7,8; Dong，Wenrui2,8

2023-12-18

10.1002/slct.202303129

ChemistrySelect   影响因子和分区

2365-6549

In the present work, we have investigated the 1,3-cycloaddition reaction of isobutyraldehyde ((CH)CHCHO) with the simplest Criegee intermediate CHOO using the OH laser-induced fluorescence (LIF) method in a reaction tube. The experiments were conducted at temperatures and pressures ranging from 280 to 338 K and 5 to 150 Torr. We found that the bimolecular rate coefficient of the reaction is temperature- and pressure-dependent. The measured rate coefficients at 100 Torr are (4.93±0.89), (4.46±0.80), (3.99±0.72), (3.56±0.64), (3.34±0.60), (2.98±0.54), (2.78±0.50)×10 cm molecule s at 280, 288, 298, 308, 318, 328, and 338 K, respectively. A high-pressure limit rate coefficient of (4.47±0.80)×10 cm molecule s was obtained at 298 K by fitting the pressure-dependent rate coefficients according to the Lindemann mechanism. The Arrhenius plot of the temperature-dependent rate coefficients results in an activation energy of (−1.86±0.33) kcal mol and a preexponential factor of (1.72±0.31)×10 cm molecule s. In the atmosphere, the reaction of CHOO with isobutyraldehyde may contribute to the sink of CHOO in regions where isobutyraldehyde emission is intense under low temperature and low relative humidity conditions.

atmospheric impact Criegee Intermediate laser-induced fluorescence rate coefficient reaction kinetics

SCI

英语

其他

2-s2.0-85180000110

Scopus

1.Key Laboratory of Materials Modification by Laser,Ion,and Electron Beams,Chinese Ministry of Education,School of Physics,Dalian University of Technology,Dalian,116024,China
2.State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China
3.Key Laboratory of Chemical Lasers,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China
4.University of Chinese Academy of Sciences,Beijing,100049,China
5.Department of Chemical Physics,School of Chemistry and Materials Science,University of Science and Technology of China,Hefei,230026,China
6.Department of Physics,Dalian Maritime University,Dalian,Liaoning,116026,China
7.Department of Chemistry,Southern University of Science and Technology,Shenzhen,518055,China
8.Hefei National Laboratory,Hefei,230088,China

Liu，Siyue,Chen，Yang,Jiang，Haotian,et al. Reaction between Criegee Intermediate CH2OO and Isobutyraldehyde: Kinetics and Atmospheric Implications[J]. ChemistrySelect,2023,8(47).

Liu，Siyue.,Chen，Yang.,Jiang，Haotian.,Shi，Jiayu.,Ding，Hongbin.,...&Dong，Wenrui.(2023).Reaction between Criegee Intermediate CH2OO and Isobutyraldehyde: Kinetics and Atmospheric Implications.ChemistrySelect,8(47).

Liu，Siyue,et al."Reaction between Criegee Intermediate CH2OO and Isobutyraldehyde: Kinetics and Atmospheric Implications".ChemistrySelect 8.47(2023).