Photo-oxidation of ethyl pyruvate initiated by chlorine atoms. Kinetics and reaction mechanism

被引：2

作者：

Rimondino, Guido N. ^{[1
,2
]}

Iriarte, Ana G. ^{[1
]}

Malanca, Fabio E. ^{[1
]}

机构：

[1] Univ Nacl Cordoba, Fac Ciencias Quim, Dept Fis Quim, INFIQC CONICET Inst Invest Fis Quim Cordoba, Ciudad Univ,X5000HUA, Cordoba, Argentina

[2] Univ Nacl Cordoba, Fac Ciencias Quim, INFIQC CONICET, Dept Fis Quim, Haya de la Torre S-N,Segundo Piso X5000HUA,Ciudad, Cordoba, Argentina

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2023年 / 440卷

关键词：

Atmospheric chemistry; Rate coefficient; Degradation products; Reaction mechanism; Infrared spectroscopy; GAS-PHASE REACTIONS; CL ATOMS; FLAVOR; OXIDATION; ACETATES; SERIES; BEER;

D O I：

10.1016/j.jphotochem.2023.114655

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：

Ethyl pyruvate is a bifunctional aliphatic ester derived from pyruvic acid. It is widely used in massive industries such as pharmaceuticals, food, agrochemicals, and materials, implyin g an important injection into the atmo-sphere. The kinetic parameters of the reaction of ethyl pyruvate with chlorine atoms at 298 K and atmospheric pressure were determined employing the Relative Method. A rate coefficient ofkEPv= (3.8 & PLUSMN; 0.6) x 10 � 12cm3 molec � 1 s � 1 was determined . In addition, the followin g degradation products were identified: carbon monoxide, carbon dioxide, formic, acetic, and pyruvic acids, as wel l as a new tricarboxylic compound. Based on these products, and with the support of computational studies, a degradation mechanism is proposed.

引用

页数：7

共 50 条

[21] Cl Atom Initiated Photo-oxidation of Mono-chlorinated Propanes To Form Carbonyl Compounds: A Kinetic and Mechanistic Approach [J].

Kumar, Avinash ;

Rajakumar, B. .

JOURNAL OF PHYSICAL CHEMISTRY A, 2019, 123 (04) :723-741

[22] Investigation of organic nitrate product formation during hydroxyl radical initiated photo-oxidation of β-pinene [J].

Auld, Janeen ;

Hastie, Donald R. .

ATMOSPHERIC ENVIRONMENT, 2011, 45 (01) :26-34

[23] Atmospheric oxidation of C10∼14 n-alkanes initiated by Cl atoms: Kinetics and mechanism [J].

Shi, Bo ;

Wang, Weigang ;

Zhou, Li ;

Sun, Zheng ;

Fan, Cici ;

Chen, Yan ;

Zhang, Wenyu ;

Qiao, Yanyang ;

Qiao, Yanliu ;

Ge, Maofa .

ATMOSPHERIC ENVIRONMENT, 2020, 222

[24] Kinetics of catalyst-free thermal and photo-oxidation of cumene [J].

Krongauz, Vadim V. ;

O'Connell, John F. ;

Ling, Michael T. K. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2014, 116 (03) :1285-1299

[25] Impact of VAPO molecular sieve configuration on catalytic oxidation of ethyl lactate to ethyl pyruvate and its reaction mechanism [J].

Wang, Jiali ;

Feng, Xuezhi ;

Sun, Xueni ;

Wang, Jun ;

Shao, Hui .

POLYHEDRON, 2024, 259

[26] Impact of VAPO molecular sieve configuration on catalytic oxidation of ethyl lactate to ethyl pyruvate and its reaction mechanism [J].

Wang, Jiali ;

Feng, Xuezhi ;

Sun, Xueni ;

Wang, Jun ;

Shao, Hui .

POLYHEDRON, 2024, 259

[27] Computational study of the reaction mechanism and kinetics of ethyl acrylate ozonolysis in atmosphere [J].

Sun, Yanhui ;

Cao, Haijie ;

Han, Dandan ;

Li, Jing ;

He, Maoxia ;

Wang, Chen .

CHEMICAL PHYSICS, 2012, 402 :6-13

[28] Cl Atom-Initiated Photo-Oxidation Reactions of Vinyl Trifluoroacetate and Allyl Trifluoroacetate in Tropospheric Conditions [J].

Kaipara, Revathy ;

Rajakumar, B. .

JOURNAL OF PHYSICAL CHEMISTRY A, 2020, 124 (11) :2123-2139

[29] Kinetic study of the OH, NO3 radicals and Cl atom initiated atmospheric photo-oxidation of iso-propenyl methyl ether [J].

Alberto Taccone, Raul ;

Moreno, Alberto ;

Colmenar, Inmaculada ;

Salgado, Sagrario ;

Pilar Martin, Maria ;

Cabanas, Beatriz .

ATMOSPHERIC ENVIRONMENT, 2016, 127 :80-89

[30] Quantum-chemical modeling of the photo-oxidation reaction of acetylene by nitrocompounds [J].

Plechovich, Sergei D. ;

Zelentsov, Sergei V. ;

Minasyan, Yuri V. .

20TH INTERNATIONAL ELECTRONIC CONFERENCE ON SYNTHETIC ORGANIC CHEMISTRY (ECSOC), 2016,

← 1 2 3 4 5 →