Chao-shuai HU, Yun-liang XU, Hong-yu CHU, Jun-xia CHENG, Li-juan GAO, Ya-ming ZHU, Xue-fei ZHAO. FTIR Analysis of the Correlation Between the Pyrolysis Characteristics and Molecular Structure of Ultrasonic Extraction Derived From Mid-Temperature Pitch[J]. Spectroscopy and Spectral Analysis, 2022, 42(3): 889
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 3, 889 (2022)
Fig. 1. FTIR spectra of 8 samples
Fig. 2. Curve-fitted spectra of peak separation in the four regions of FTIR spectrum (taking A-Ace for example)
(a): 700~900 cm-1; (b): 1 000~1 800 cm-1; (c): 2 800~3 000 cm-1; (d): 3 000~3 100 cm-1
(a): 700~900 cm-1; (b): 1 000~1 800 cm-1; (c): 2 800~3 000 cm-1; (d): 3 000~3 100 cm-1
Fig. 3. (a) TG curves of 8 samples at 10 K·min-1 heating rate; (b) TG curves of A-Ace sample at different heating rates
Fig. 4. (a) FWO and (b) KAS methods for E a (taking A-Ace for example)
Fig. 5. The fitting relationship diagram of pyrolysis activation energy and single index
(a):I 1; (b): I 2; (c): I 3; (d): I 4; (e): I 5; (f): I 6
(a):
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Table 1. Extraction rate of all solvents
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Table 2. Structural parameters derived from FTIR of all extracts
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Table 3. The E a of all extracts calculated by FWO and KAS methods
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