Pressure dependent OH yields in the reactions of CH3CO and HOCH2CO with O2

被引：14
作者：
Gross, C. B. M. [1 ]
Dillon, T. J. [1 ]
Crowley, J. N. [1 ]
机构：
[1] Max Planck Inst Chem, D-55128 Mainz, Germany
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2014年 / 16卷 / 22期
关键词：
RATE COEFFICIENTS; ATMOSPHERIC CHEMISTRY; INITIATED OXIDATION; 266; NM; RADICALS; GLYCOLALDEHYDE; PHOTOLYSIS; KINETICS; CH3C(O)CH3; MECHANISM;
D O I：
10.1039/c4cp01108b
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
OH-formation in the reactions of CH3CO (R1) and HOCH2CO (R4) with O-2 was studied in He, N-2 and air (27 to 400 mbar) using OH-detection by laser induced fluorescence (LIF). 248 nm laser photolysis of COCl2 in the presence of CH3CHO or HOCH2CHO was used as source of the acyl radicals CH3CO and HOCH2CO. The LIF-system was calibrated in back-to-back experiments by the 248 nm laser photolysis of H2O2 as OH radical precursor. A straight-forward analytical expression was used to derive OH yields (alpha) for both reactions. A Stern-Volmer-analysis results in alpha(-1)(1b)(N-2) = 1 + (9.4 +/- 1.7) x 10(-18) cm(3) molecule(-1) x [M], alpha(-1)(1b)(He) = 1 + (3.6 +/- 0.6) x 10(-18) cm(3) molecule(-1) x [M] and alpha(-1)(4b)(N-2) = 1 + (1.85 +/- 0.38) x 10(-18) cm(3) molecule(-1) x [M]. Our results for CH3CO are compared to the previous (divergent) literature values whilst that for HOCH2CO, for which no previous data were available, provide some insight into the factors controlling the yield of OH in these reactions.
引用
收藏
页码：10990 / 10998
页数：9
相关论文
共 37 条
[1]  
[Anonymous], 19 INT S GAS KIN ORL
[2]   Evaluated kinetic and photochemical data for atmospheric chemistry: Volume II - gas phase reactions of organic species [J].
Atkinson, R. ;
Baulch, D. L. ;
Cox, R. A. ;
Crowley, J. N. ;
Hampson, R. F. ;
Hynes, R. G. ;
Jenkin, M. E. ;
Rossi, M. J. ;
Troe, J. .
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2006, 6 :3625-4055
[3]   Evaluated kinetic and photochemical data for atmospheric chemistry:: Volume I -: gas phase reactions of Ox, HOx, NOx and SOx species [J].
Atkinson, R ;
Baulch, DL ;
Cox, RA ;
Crowley, JN ;
Hampson, RF ;
Hynes, RG ;
Jenkin, ME ;
Rossi, MJ ;
Troe, J .
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2004, 4 :1461-1738
[4]   The atmospheric chemistry of glycolaldehyde [J].
Bacher, C ;
Tyndall, GS ;
Orlando, JJ .
JOURNAL OF ATMOSPHERIC CHEMISTRY, 2001, 39 (02) :171-189
[5]   Pressure and temperature-dependent quantum yields for the photodissociation of acetone between 279 and 327.5 nm [J].
Blitz, MA ;
Heard, DE ;
Pilling, MJ ;
Arnold, SR ;
Chipperfield, MP .
GEOPHYSICAL RESEARCH LETTERS, 2004, 31 (06) :1-5
[6]   OH formation from CH3CO+O2:: a convenient experimental marker for the acetyl radical [J].
Blitz, MA ;
Heard, DE ;
Pilling, MJ .
CHEMICAL PHYSICS LETTERS, 2002, 365 (5-6) :374-379
[7]   KINETIC AND THEORETICAL-STUDIES OF THE REACTIONS CH3C(O)O2+NO2+M-REVERSIBLE-CH3C(O)O2NO2+M BETWEEN 248-K AND 393-K AND BETWEEN 30-TORR AND 760-TORR [J].
BRIDIER, I ;
CARALP, F ;
LOIRAT, H ;
LESCLAUX, R ;
VEYRET, B ;
BECKER, KH ;
REIMER, A ;
ZABEL, F .
JOURNAL OF PHYSICAL CHEMISTRY, 1991, 95 (09) :3594-3600
[8]   Mechanism of the OH-initiated oxidation of glycolaldehyde over the temperature range 233-296 K [J].
Butkovskaya, Nadezhda I. ;
Pouvesle, Nicolas ;
Kukui, Alexandre ;
Le Bra, Georges .
JOURNAL OF PHYSICAL CHEMISTRY A, 2006, 110 (50) :13492-13499
[9]   OH yields from the CH3CO+O2 reaction using an internal standard [J].
Carr, Scott A. ;
Baeza-Romero, M. Teresa ;
Blitz, Mark A. ;
Pilling, Michael J. ;
Heard, Dwayne E. ;
Seakins, Paul W. .
CHEMICAL PHYSICS LETTERS, 2007, 445 (4-6) :108-112
[10]   Experimental and Modeling Studies of the Pressure and Temperature Dependences of the Kinetics and the OH Yields in the Acetyl + O2 Reaction [J].
Carr, Scott A. ;
Glowacki, David R. ;
Liang, Chi-Hsiu ;
Baeza-Romero, M. Teresa ;
Blitz, Mark A. ;
Pilling, Michael J. ;
Seakins, Paul W. .
JOURNAL OF PHYSICAL CHEMISTRY A, 2011, 115 (06) :1069-1085
1234