CCPortal
DOI10.1016/j.jqsrt.2019.01.003
Conformational analysis and global warming potentials of 1,1,1,2,3,3-hexafluoropropane and 1,1,2,2,3-pentafluoropropane from absorption spectroscopy
Godin, Paul J.1; Johnson, Hayden1; Piunno, Romina1; Le Bris, Karine2; Strong, Kimberly1
发表日期2019
ISSN0022-4073
EISSN1879-1352
卷号225页码:337-350
英文摘要

Absorption cross-sections of 1,1,1,2,3,3-hexafitioropropane (HFC-236ea) and 1,1,2,2, 3-pentafluoropropane (HFC-245ca) were derived from Fourier transform infrared spectra recorded from 550 to 3400 cm(-1) with a resolution of 0.1 cm(-1) over a temperature range of 300-365 K. Good agreement was found between the experimentally derived results, theoretical spectra from density functional theory (DFT) calculations, and previously published experimental measurements. The only temperature dependence observed was in the amplitude of some of the absorption peaks due to the changing ratio of the stable conformations of both molecules studied. This temperature dependence does not result in a significant trend in integrated band strength as a function of temperature. The average value for the integrated band strength of HFC-236ea was found to be (1.982 +/- 0.012)x10(-16) cm molecule(-1) over the spectral range of 550 to 3026 cm(-1). The average value for the integrated band strength of HFC-245ca was found to be (1.348 +/- 0.35)x10(-16) cm molecule(-1) over the spectral range of 570 to 3035 cm(-1).


Radiative efficiency (RE) and the global warming potential (GWP) for both molecules were also derived, accounting for corrections due to atmospheric lifetimes and stratospheric temperature adjustment. A RE of 0.256 +/- 0.034 Wm(-2)ppbv(-1) was obtained for HFC-236ea, which leads to a GWP(100) of 1141 1402 for 550-3000 cm(-1). For HFC-245ca, a RE of 0.197 +/- 0.023 Wm(-2)ppbv(-1) was derived, which leads to a GWP(100) of 588 205 for 550-3000 cm(-1). The DFT calculation was linearly adjusted to match the experimental spectrum. Using this adjusted DFT spectrum to expand the range below 550 to 0 cm(-1) increases the RE to 0.265 +/- 0.035 Wm(-2)ppbv(-1) and the GWP100 to 1181 +/- 417 for HFC-236ea; while for HFC-245ca, the RE increases to 0.202 +/- 0.027 Wm(-2)ppbv(-1) and the GWP100 to 602 +/- 210. (C) 2019 Elsevier Ltd. All rights reserved.


WOS研究方向Optics ; Spectroscopy
来源期刊JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/94637
作者单位1.Univ Toronto, Dept Phys, 60 St George St, Toronto, ON M5S 1A7, Canada;
2.St Francis Xavier Univ, Dept Phys, Antigonish, NS B2G 2W5, Canada
推荐引用方式
GB/T 7714
Godin, Paul J.,Johnson, Hayden,Piunno, Romina,et al. Conformational analysis and global warming potentials of 1,1,1,2,3,3-hexafluoropropane and 1,1,2,2,3-pentafluoropropane from absorption spectroscopy[J],2019,225:337-350.
APA Godin, Paul J.,Johnson, Hayden,Piunno, Romina,Le Bris, Karine,&Strong, Kimberly.(2019).Conformational analysis and global warming potentials of 1,1,1,2,3,3-hexafluoropropane and 1,1,2,2,3-pentafluoropropane from absorption spectroscopy.JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER,225,337-350.
MLA Godin, Paul J.,et al."Conformational analysis and global warming potentials of 1,1,1,2,3,3-hexafluoropropane and 1,1,2,2,3-pentafluoropropane from absorption spectroscopy".JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 225(2019):337-350.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Godin, Paul J.]的文章
[Johnson, Hayden]的文章
[Piunno, Romina]的文章
百度学术
百度学术中相似的文章
[Godin, Paul J.]的文章
[Johnson, Hayden]的文章
[Piunno, Romina]的文章
必应学术
必应学术中相似的文章
[Godin, Paul J.]的文章
[Johnson, Hayden]的文章
[Piunno, Romina]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。