Broadening of the ν2 Raman Band of CH4 by C3H8 and C4H10
Abstract
:1. Introduction
2. Results and Discussion
2.1. Methane Lines Broadened by Propane and Butanes
2.2. Evaluation of Broadening Effect by Heavier Alkanes
2.3. Influence of Methane Broadening by C2–C6 Alkanes on Measurement Error
3. Methods
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Sample Availability
References
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J″ | R Branch | S Branch | ||||||
---|---|---|---|---|---|---|---|---|
γ(CH4) | γ(C3H8) | γ(n-C4H10) | γ(i-C4H10) | γ(CH4) | γ(C3H8) | γ(n-C4H10) | γ(i-C4H10) | |
0 | – | – | – | – | 81 ± 5 | 110 ± 10 | 114 ± 10 | 122 ± 11 |
1 | 77 ± 3 | 105 ± 7 | 108 ± 7 | 116 ± 7 | 82 ± 2 | 109 ± 5 | 113 ± 5 | 117 ± 5 |
2 | 71 ± 3 | 97 ± 7 | 100 ± 7 | 107 ± 7 | 79 ± 2 | 108 ± 6 | 116 ± 6 | 118 ± 6 |
3 | 78 ± 1 | 104 ± 3 | 108 ± 3 | 112 ± 3 | 76 ± 1 | 104 ± 3 | 110 ± 3 | 111 ± 3 |
4 | 71 ± 2 | 94 ± 4 | 98 ± 4 | 101 ± 4 | 74 ± 1 | 101 ± 2 | 104 ± 2 | 110 ± 3 |
5 | 74 ± 2 | 100 ± 5 | 108 ± 5 | 110 ± 5 | 68 ± 1 | 93 ± 3 | 97 ± 3 | 101 ± 3 |
6 | 65 ± 1 | 88 ± 4 | 94 ± 4 | 96 ± 4 | 63 ± 1 | 87 ± 2 | 96 ± 2 | 97 ± 2 |
7 | 66 ± 1 | 91 ± 3 | 96 ± 3 | 97 ± 3 | 63 ± 1 | 88 ± 2 | 93 ± 2 | 92 ± 2 |
8 | 60 ± 2 | 83 ± 4 | 87 ± 4 | 88 ± 4 | 58 ± 1 | 81 ± 2 | 85 ± 2 | 85 ± 2 |
9 | 52 ± 2 | 72 ± 3 | 74 ± 3 | 78 ± 3 | 53 ± 1 | 75 ± 3 | 80 ± 3 | 84 ± 3 |
10 | 61 ± 3 | 83 ± 5 | 86 ± 5 | 91 ± 5 | 52 ± 2 | 75 ± 4 | 80 ± 4 | 83 ± 4 |
11 | 59 ± 4 | 81 ± 7 | 84 ± 7 | 87 ± 7 | 52 ± 4 | 74 ± 7 | 80 ± 8 | 83 ± 8 |
12 | 54 ± 6 | 74 ± 9 | 77 ± 10 | 80 ± 10 | – | – | – | – |
13 | 45 ± 6 | 63 ± 9 | 69 ± 10 | 70 ± 10 | – | – | – | – |
Component | α, 10−3 nm3 | References | ||
---|---|---|---|---|
Estimated | Measured | |||
CH4 | 2.448 | 1.00 | 1.00 | – |
C2H6 | 4.226 | 1.18 | 1.20 | [18] |
C3H8 | 5.921 | 1.32 | 1.38 | This work |
n-C4H10 | 8.020 | 1.48 | 1.45 | This work |
i-C4H10 | 8.009 | 1.48 | 1.50 | This work |
C5H12 | 9.879 | 1.60 | – | – |
C6H14 | 11.630 | 1.71 | – | – |
N2 | 1.710 | 0.77 | 0.75 | [39,46,48,50,74,75,76,77] |
O2 | 1.562 | 0.72 | 0.71 | [39,46,48,49,50,74,75,76] |
H2 | 0.787 | 0.99 | 0.80 | [39,50,75,78] |
CO2 | 2.507 | 0.88 | 0.91 | [51,52,53] |
H2O | 1.501 | 0.77 | 0.84 | [75] |
H2S | 3.631 | 1.08 | – | – |
CO | 1.953 | 0.82 | – | – |
Ar | 1.664 | 0.72 | 0.66 | [39,46,50,57,74] |
He | 0.208 | 0.50 | 0.51 | [39,46,50,51,54,57,74,75] |
Ne | 0.381 | 0.35 | 0.42 | [57,74] |
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Tanichev, A.S.; Petrov, D.V. Broadening of the ν2 Raman Band of CH4 by C3H8 and C4H10. Molecules 2023, 28, 3365. https://doi.org/10.3390/molecules28083365
Tanichev AS, Petrov DV. Broadening of the ν2 Raman Band of CH4 by C3H8 and C4H10. Molecules. 2023; 28(8):3365. https://doi.org/10.3390/molecules28083365
Chicago/Turabian StyleTanichev, Aleksandr S., and Dmitry V. Petrov. 2023. "Broadening of the ν2 Raman Band of CH4 by C3H8 and C4H10" Molecules 28, no. 8: 3365. https://doi.org/10.3390/molecules28083365