Defective TiO2 for Propane Dehydrogenation

  • Chun-Feng Li
    Chun-Feng Li
    The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
    More by Chun-Feng Li
  • Xiaojing Guo
    Xiaojing Guo
    The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
    More by Xiaojing Guo
  • Qing-He Shang
    Qing-He Shang
    The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
  • Xi Yan
    Xi Yan
    The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
    More by Xi Yan
  • Cuilan Ren
    Cuilan Ren
    Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    More by Cuilan Ren
  • Wan-Zhong Lang*
    Wan-Zhong Lang
    The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
    *E-mail: [email protected] (W.-Z.L.).
  • , and 
  • Ya-Jun Guo*
    Ya-Jun Guo
    The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
    *E-mail: [email protected] (Y.-J.G.).
    More by Ya-Jun Guo
Cite this: Ind. Eng. Chem. Res. 2020, 59, 10, 4377–4387
Publication Date (Web):February 10, 2020
https://doi.org/10.1021/acs.iecr.9b06759
Copyright © 2020 American Chemical Society
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Abstract

Nonoxidative propane dehydrogenation (PDH) has become a more attractive process worldwide because of the low cost and abundance of shale gas that has recently become available. Orthodox catalysts for PDH based on Pt and CrOx face challenges because of the high cost of the former and the toxicity of the latter. Herein, we present defective TiO2-based catalysts for the PDH reaction, which are inexpensive and eco-friendly. Comprehensive characterizations of their structure, morphology, and surfaces reveal that the fourfold-coordinated titanium atoms surrounding oxygen vacancies (OVs) are the main active sites for PDH. Density functional theory calculations have been employed to further explain the superior catalytic properties of defective TiO2 for PDH. Experimental results have demonstrated that the catalytic performance of PDH was significantly improved using TiO2 subjected to a reduction treatment. Moreover, the hydrogen reduction temperature for pristine TiO2 was found to influence the catalytic performance.

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  • EDS elemental content images; low-temperature N2 adsorption–desorption isotherms and textural properties; FESEM images; relationship between propane conversion and specific surface areas; fitting of the O 1s XPS curves; semiquantitative XPS elemental analysis; molecular adsorption and dissociative adsorption configurations; carbon balance and coke amount; mass transfer limitation calculations; heat transport limitation calculation; and carbon balance calculation (PDF)

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