Spectroscopy and Spectral Analysis, Volume. 42, Issue 3, 889(2022)

FTIR Analysis of the Correlation Between the Pyrolysis Characteristics and Molecular Structure of Ultrasonic Extraction Derived From Mid-Temperature Pitch

Chao-shuai HU*, Yun-liang XU1;, Hong-yu CHU1;, Jun-xia CHENG1;, Li-juan GAO1;, Ya-ming ZHU1; 2; *;, and Xue-fei ZHAO1; 2; *;
Author Affiliations
  • 1. College of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China
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    Figures & Tables(8)
    FTIR spectra of 8 samples
    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) TG curves of 8 samples at 10 K·min-1 heating rate; (b) TG curves of A-Ace sample at different heating rates
    (a) FWO and (b) KAS methods for Ea (taking A-Ace for example)
    The fitting relationship diagram of pyrolysis activation energy and single index(a): I1; (b): I2; (c): I3; (d): I4; (e): I5; (f): I6
    • Table 1. Extraction rate of all solvents

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      Table 1. Extraction rate of all solvents

      SamplesExtraction rate/%
      A-Ace32.32
      A-Moe35.77
      A-Ea36.96
      A-Dmso45.87
      A-Tol50.33
      A-Dcm62.51
      A-Cds69.43
      A-Thf79.79
    • Table 2. Structural parameters derived from FTIR of all extracts

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      Table 2. Structural parameters derived from FTIR of all extracts

      SamplesI1I2I3I4I5I6
      A-Ace0.202 80.133 50.728 73.493 42.794 412.023 0
      A-Moe0.158 10.133 30.690 03.508 66.011 615.365 5
      A-Ea0.168 80.130 80.808 74.479 14.033 111.060 0
      A-Dmso0.139 20.125 50.642 82.812 34.214 615.162 9
      A-Tol0.205 60.192 30.677 53.995 42.749 016.525 1
      A-Dcm0.196 40.204 60.691 93.629 63.209 114.640 8
      A-Cds0.181 90.022 60.884 43.709 916.703 212.322 9
      A-Thf0.380 40.149 90.540 62.992 71.162 918.482 8
    • Table 3. The Ea of all extracts calculated by FWO and KAS methods

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      Table 3. The Ea of all extracts calculated by FWO and KAS methods

      SamplesEa/(J·mol-1)
      FWOKASAverage
      A-Ace95 65291 41693 534
      A-Moe94 38690 14592 266
      A-Ea100 93596 95698 946
      A-Dmso102 00198 160100 081
      A-Tol84 47379 42181 947
      A-Dcm101 39997 18199 290
      A-Cds118 264114 807116 536
      A-Thf80 72275 46778 095
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    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

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    Paper Information

    Category: Orginal Article

    Received: Jan. 31, 2021

    Accepted: Mar. 13, 2021

    Published Online: Apr. 19, 2022

    The Author Email: HU Chao-shuai (hexiaojiutian123@163.com)

    DOI:10.3964/j.issn.1000-0593(2022)03-0889-07

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