用户名: 密码: 验证码:
大气中羰基化合物的理论研究
详细信息    查看官网全文
摘要
羰基化合物是大气中挥发性有机物(VOCs)的重要组成部分,它在大气化学中扮演着重要的角色[1-3]。我们的工作是对于一些典型的羰基化合物(如(CH_3)_2C(OH)C(O)CH_3)的光离解,以及与一些自由基如(Cl原子)的反应机理进行详细的理论研究。在(CH_3)_2C(OH)C(O)CH_3与Cl原子反应的理论研究中,在CCSD(T)-F12A/VDZ-F12//BHandH LYP/6-311++G(d,p)能级沿着势能面找到了四条反应通道。研究表明来自于与(CH_3)_2C(OH)C(O)CH_3中-OH相邻两个甲基(-CH_3)的氢提取是主要反应通道,有最低的能垒-0.69和-1.31kcal/mol。
Carbonyl compounds a significant portion of the Volatile organic compounds(VOCs) in atmospheric and play an important role in atmospheric chemistry. Our work is for some typical carbonyl compounds(such as(CH_3)_2C(OH)C(O)CH_3) photodissociation, and with a number of radicals, such as atoms(Cl) reaction mechanism of theoretical research in detail. In the the reactions of Cl atom with carbonyl compound(CH_3)_2C(OH)C(O)CH_3, We explore four reaction pathways at the CCSD(T)-F12A/VDZ-F12//BHandH LYP/ 6-311++ G(d,p) level. The calculated kinetics demonstrate that come from the CH_3 in the(CH_3)_2C(OH)C(O)CH_3 which adjacent to OH are major reaction pathways, which involve the lowest reaction barriers of-0.69 and-1.31kcal/mol with respect to separate reactants, respectively.
引文
[1]Carlier P,Hannachi H,Mouvier G.Atmos Environ.1986;20:2079-99.
    [2]Grosjean D,Williams EL,Grosjean E.Environ Sci Technol.1993;27:830-40.
    [3]李中阳,吕文英,迟玉广.安徽农业科学.2011;39:4620-3,38.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700