Kinetics of the reactions of Cl atoms with 2-buten-1-ol, 2-methyl-2-propen-1-ol, and 3-methyl-2-buten-1-ol as a function of temperature期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Kinetics of the reactions of Cl atoms with 2-buten-1-ol, 2-methyl-2-propen-1-ol, and 3-methyl-2-buten-1-ol as a function of temperature

Authors:	Diana Rodriguez Ana Rodriguez Amparo Soto Alfonso Aranda Yolanda Diaz-de-Mera Alberto Notario

Institution:	(1) Facultad de CC Medio Ambiente, Universidad de Castilla La Mancha, Avenida Carlos III, s/n, 45071 Toledo, Spain;(2) Facultad de CC Químicas, Universidad de Castilla La Mancha, Avenida Camilo José Cela, No. 10, 13071 Ciudad Real, Spain;(3) Instituto de Tecnologías Química y Medioambiental (ITQUIMA), Universidad de Castilla La Mancha, Avenida Camilo José Cela, s/n, 13071 Ciudad Real, Spain

Abstract:	The reactions of three structurally similar unsaturated alcohols, 2-buten-1-ol (crotyl alcohol), 2-methyl-2-propen-1-ol (MPO221) and 3-methyl-2-buten-1-ol (MBO321) with Cl atoms, have been investigated for the first time, using a 400 l Teflon reaction chamber coupled with gas chromatograph-coupled with flame-ionization detection (GC-FID). The experiments were performed at atmospheric pressure and at temperatures between 255 and 298 K, in air or nitrogen as the bath gas. The obtained kinetic data were used to derive the Arrhenius expressions $k_{{\text{MPO221}}} = \left( {3.05 \pm 1.40} \right) \times 10^{ - 23} \exp {{\left( {8,760 \pm 1,279} \right)} \mathord{\left/ {\vphantom {{\left( {8,760 \pm 1,279} \right)} T}} \right. \kern-\nulldelimiterspace} T}$ , $k_{{\text{crotyl}}} = \left( {8.85 \pm 0.46} \right) \times 10^{ - 21} \exp {{\left( {7,240 \pm 1,455} \right)} \mathord{\left/ {\vphantom {{\left( {7,240 \pm 1,455} \right)} T}} \right. \kern-\nulldelimiterspace} T}$ , $k_{{\text{MBO321}}} = \left( {7.55 \pm 0.20} \right) \times 10^{ - 21} \exp {{\left( {7,361 \pm 735} \right)} \mathord{\left/ {\vphantom {{\left( {7,361 \pm 735} \right)} T}} \right. \kern-\nulldelimiterspace} T}$ (in units of cm³ molecule⁻¹ s⁻¹). Finally, atmospheric lifetimes of those unsaturated alcohols with respect to OH, NO₃, O₃ and Cl have been calculated.

Keywords:	Atmospheric chemistry Chlorine atoms Alcohols Gas-phase reaction Relative method Temperature
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