Atmospheric chemistry of cis-CF3CH=CHCl(HCFO-1233zd(Z)): Kinetics of the gas-phase reactions with Cl atoms, OH radicals, and O3
Atmospheric chemistry of cis-CF3CH=CHCl(HCFO-1233zd(Z)): Kinetics of the gas-phase reactions with Cl atoms, OH radicals, and O3
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DOI：
10.1016/j.cplett.2015.09.008
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发表时间：
2015-10-16
影响因子：
2.8
通讯作者：
Wallington, Timothy J.
中科院分区：
文献类型：
--
作者：
Andersen, Lene Loffler;Osterstrom, Freja From;Wallington, Timothy J.
采用FTIR烟雾室技术测定了反应速率系数k（Cl +cis-CF3CH=CHCl）=（6.26 +/- 0.84）x10（-11），k（OH + cis-CF3CH=CHCl）=（8.45 +/- 1.52）× 10（-13），k（O-3 + cis-CF3CH=CHCl）=（1.53 +/- 0.12）v10（-21）cm（3）molecule（-1）s（-1）. cis-CF 3CH =CHCl的大气寿命是通过与OH自由基反应确定的，估计为14天。记录了cis-CF_3CH =CHCl的红外光谱，测得在600-2000 cm（-1）范围内的积分吸收为（1.48 +/- 0.07）v 10（-16）cm分子（-1）。考虑到不均匀的水平和垂直混合，全球升温潜能值（100）基本为零。在我们之前对OH与trans-CF 3CH =CHCl反应动力学的相对速率研究中，对不需要的Cl原子化学进行了校正，得到k（OH +/-trans-CF 3CH =CHCl）=（3.61 +/- 0.37）v 10-13 cm（3）molecule（-1）s（-1）。(C)2015 Elsevier B. V.版权所有。
FTIR smog chamber techniques were used to measure the rate coefficients k(Cl +cis-CF3CH=CHCl)= (6.26 +/- 0.84) x 10(-11), k(OH + cis-CF3CH=CHCl)= (8.45 +/- 1.52) x 10(-13), and k(O-3 + cis-CF3CH=CHCl)= (1.53 +/- 0.12) v 10(-21) cm(3) molecule(-1) s(-1). The atmospheric lifetime of cis-CF3CH=CHCl is determined by reaction with OH radicals and is estimated to be 14 days. The infrared spectrum of cis-CF3CH=CHCl was recorded and the integrated absorption over the range 600-2000 cm(-1) was measured to be (1.48 +/- 0.07) v 10(-16) cm molecule(-1). Accounting for non-uniform horizontal and vertical mixing leads to a GWP(100) value of essentially zero. Correction to account for unwanted Cl atom chemistry in our previous relative rate study of the kinetics of the reaction of OH with trans-CF3CH=CHCl gives k(OH +/- trans-CF3CH=CHCl)= (3.61 +/- 0.37) v 10-13 cm(3) molecule(-1) s(-1). (C) 2015 Elsevier B.V. All rights reserved.