American Journal of Applied Chemistry

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The Application of NIR Process Analytical Chemistry in Studying Competitive Adsorption Process

Received: 08 April 2019    Accepted: 21 May 2019    Published: 12 June 2019
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Abstract

With an experimental setup of near-infrared process analytical chemistry, a competitive adsorption process of orthoxylene and aniline vapor onto silica gel has been revealed in the paper. The mixture vapor of orthoxylene and aniline has been introduced into a quartz adsorption bed, which was filled with adsorbent of silica gel and monitored continuously by a near-infrared spectrometer. Based on near-infrared spectra recorded during the adsorption process and chemometrics methodologies, the competitive adsorption process has been studied completely as well as clearly: 1) at about 62 minutes the adsorption achieved its equilibrium or stable state with aniline concentration of 0.22 g/g, and without any orthoxylene; 2) othoxylene was adsorbed first, but then rapidly replaced by aniline; 3) the adsorption of aniline resulted from the hydrogen bonds between aniline’s amino groups and silica gel’s silanol groups while that of orthoxylene was due to physical adsorption; 4) aniline was adsorbed vertically on the silica gel but orthoxylene laid evenly; 5) some surface of silica gel was more active for adsorption than others.

DOI 10.11648/j.ajac.20190703.11
Published in American Journal of Applied Chemistry (Volume 7, Issue 3, June 2019)
Page(s) 80-86
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Gas-Solid Competitive Adsorption, Near-Infrared Spectroscopy (NIR), Process Analytical Chemistry (PAC), Chemometrics, Orthoxylene, Aniline, Silica Gel

References
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Author Information
  • College of Chemistry and Life Science, Chuxiong Normal University, Chuxiong, PR China

  • College of Chemistry and Life Science, Chuxiong Normal University, Chuxiong, PR China

  • College of Material and Chemical Engineering, Tongren University, Tongren, PR China

  • Department of Science and Technology, Chuxiong Normal University, Chuxiong, PR China

  • College of Chemistry and Life Science, Chuxiong Normal University, Chuxiong, PR China

  • College of Chemistry and Life Science, Chuxiong Normal University, Chuxiong, PR China

  • College of Chemistry and Life Science, Chuxiong Normal University, Chuxiong, PR China

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    Hong-Wei Yang, Chen-Bo Cai, Lu Xu, Lun Li, Yan-Li Zou, et al. (2019). The Application of NIR Process Analytical Chemistry in Studying Competitive Adsorption Process. American Journal of Applied Chemistry, 7(3), 80-86. https://doi.org/10.11648/j.ajac.20190703.11

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    ACS Style

    Hong-Wei Yang; Chen-Bo Cai; Lu Xu; Lun Li; Yan-Li Zou, et al. The Application of NIR Process Analytical Chemistry in Studying Competitive Adsorption Process. Am. J. Appl. Chem. 2019, 7(3), 80-86. doi: 10.11648/j.ajac.20190703.11

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    AMA Style

    Hong-Wei Yang, Chen-Bo Cai, Lu Xu, Lun Li, Yan-Li Zou, et al. The Application of NIR Process Analytical Chemistry in Studying Competitive Adsorption Process. Am J Appl Chem. 2019;7(3):80-86. doi: 10.11648/j.ajac.20190703.11

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  • @article{10.11648/j.ajac.20190703.11,
      author = {Hong-Wei Yang and Chen-Bo Cai and Lu Xu and Lun Li and Yan-Li Zou and Yong-Yuan Tao and Mei-Qiong Wen},
      title = {The Application of NIR Process Analytical Chemistry in Studying Competitive Adsorption Process},
      journal = {American Journal of Applied Chemistry},
      volume = {7},
      number = {3},
      pages = {80-86},
      doi = {10.11648/j.ajac.20190703.11},
      url = {https://doi.org/10.11648/j.ajac.20190703.11},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.ajac.20190703.11},
      abstract = {With an experimental setup of near-infrared process analytical chemistry, a competitive adsorption process of orthoxylene and aniline vapor onto silica gel has been revealed in the paper. The mixture vapor of orthoxylene and aniline has been introduced into a quartz adsorption bed, which was filled with adsorbent of silica gel and monitored continuously by a near-infrared spectrometer. Based on near-infrared spectra recorded during the adsorption process and chemometrics methodologies, the competitive adsorption process has been studied completely as well as clearly: 1) at about 62 minutes the adsorption achieved its equilibrium or stable state with aniline concentration of 0.22 g/g, and without any orthoxylene; 2) othoxylene was adsorbed first, but then rapidly replaced by aniline; 3) the adsorption of aniline resulted from the hydrogen bonds between aniline’s amino groups and silica gel’s silanol groups while that of orthoxylene was due to physical adsorption; 4) aniline was adsorbed vertically on the silica gel but orthoxylene laid evenly; 5) some surface of silica gel was more active for adsorption than others.},
     year = {2019}
    }
    

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  • TY  - JOUR
    T1  - The Application of NIR Process Analytical Chemistry in Studying Competitive Adsorption Process
    AU  - Hong-Wei Yang
    AU  - Chen-Bo Cai
    AU  - Lu Xu
    AU  - Lun Li
    AU  - Yan-Li Zou
    AU  - Yong-Yuan Tao
    AU  - Mei-Qiong Wen
    Y1  - 2019/06/12
    PY  - 2019
    N1  - https://doi.org/10.11648/j.ajac.20190703.11
    DO  - 10.11648/j.ajac.20190703.11
    T2  - American Journal of Applied Chemistry
    JF  - American Journal of Applied Chemistry
    JO  - American Journal of Applied Chemistry
    SP  - 80
    EP  - 86
    PB  - Science Publishing Group
    SN  - 2330-8745
    UR  - https://doi.org/10.11648/j.ajac.20190703.11
    AB  - With an experimental setup of near-infrared process analytical chemistry, a competitive adsorption process of orthoxylene and aniline vapor onto silica gel has been revealed in the paper. The mixture vapor of orthoxylene and aniline has been introduced into a quartz adsorption bed, which was filled with adsorbent of silica gel and monitored continuously by a near-infrared spectrometer. Based on near-infrared spectra recorded during the adsorption process and chemometrics methodologies, the competitive adsorption process has been studied completely as well as clearly: 1) at about 62 minutes the adsorption achieved its equilibrium or stable state with aniline concentration of 0.22 g/g, and without any orthoxylene; 2) othoxylene was adsorbed first, but then rapidly replaced by aniline; 3) the adsorption of aniline resulted from the hydrogen bonds between aniline’s amino groups and silica gel’s silanol groups while that of orthoxylene was due to physical adsorption; 4) aniline was adsorbed vertically on the silica gel but orthoxylene laid evenly; 5) some surface of silica gel was more active for adsorption than others.
    VL  - 7
    IS  - 3
    ER  - 

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