Reaction Kinetics and Secondary Organic Aerosol Composition Analysis of 2-Cyclohexen-1-one with NO_(3) Radicals  

作　　者：HU Lin TONG Shengrui XU Yanyong ZHANG Hailiang YU Shanshan CHEN Meifang GE Maofa 

机构地区：[1]Structural Chemistry of Unstable and Stable Species,Chinese Academy of Sciences Research/Education Center for Excellence in Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing,100190,P.R.China [2]College of Ecology and Environment,Xinjiang University,Urumqi,830017,P.R.China [3]University of Chinese Academy of Sciences,Beijing,100049,P.R.China

出　　处：《Chemical Research in Chinese Universities》2024年第4期730-736,共7页高等学校化学研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.42130606,42022039);the Fund of the Beijing National Laboratory for Molecular Sciences China(No.BNLMS-CXXM-202011);the Project of the Youth Innovation Promotion Association of Chinese Academy of Sciences(No.Y2021013).

摘　　要：Unsaturated ketones are typical oxygenated volatile organic compounds(OVOCs)with high reactivity,and are important precursors in air pollution.The sources of OVOCs are complex and include direct emissions and secondary oxidation formation of VOCs in the atmosphere.2-Cyclohexen-1-one is a widespread substance,and is derived from the industrial catalytic oxidation of cyclohexene.In this paper,we investigated the rate constants of the chemical reactions of 2-cyclohexen-1-one with NO_(3) radicals,which is(7.25±0.29)×10^(-15) cm^(3)·molecule^(-1)·s^(-1) at 298 K and under 1 atm(1 atm=101325Pa).It supplemented the kinetics of NO_(3) radicals database,and revealed its effects in the nighttime atmosphere.In addition,the reaction products of 2-cyclohexen-1-one with NO_(3) radicals were detected by Fourier transform ion cyclotron resonance mass spectrometry(FT-ICR MS),which revealed a series of nitrate esters in the composition of the secondary organic aerosol(SOA),which may reduce atmospheric visibility.Finally,the possible pathways for the generation of the products were developed.

关 键 词：KINETICS Unsaturated ketone Nitrate radical Secondary organic aerosol 

分 类 号：O62[理学—有机化学]