Chinese Journal of Applied Chemistry ›› 2023, Vol. 40 ›› Issue (6): 789-805.DOI: 10.19894/j.issn.1000-0518.220414

• Review • Previous Articles     Next Articles

Research Progress of Bulk Metal Oxides for Non-oxidative Propane Dehydrogenation

Yi-Chen YU, Yu-Chen ZHANG, Yao-Yuan ZHANG(), Qin WU, Da-Xin SHI, Kang-Cheng CHEN, Han-Sheng LI()   

  1. School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing 100081,China
  • Received:2022-12-29 Accepted:2023-05-22 Published:2023-06-01 Online:2023-06-27
  • Contact: Yao-Yuan ZHANG,Han-Sheng LI
  • About author:hanshengli@bit.edu.cn
    yaoyuan.zhang@bit.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22108013);the Petro China Innovation Foundation(2020D-5007-0402);Beijing Institute of Technology Research Fund Program for Young Scholars

Abstract:

Propylene is a basic chemical raw material and the demand of which has been increasing in recent years, however, the traditional process such as steam cracking and catalytic cracking cannot meet the demand of propylene. Propane dehydrogenation (PDH) process has attracted extensive attention due to its wide sources of raw materials, high selectivity of propylene and easy separation of products. Traditional PDH catalysts are Pt-Sn/Al2O3 and CrO x /Al2O3, however, the platinum-based catalyst is expensive, and the chromium based catalyst has high toxicity. The bulk metal oxides (ZrO2, Al2O3, TiO2, WO3, Eu2O3 and Gd2O3) have the advantages of high intrinsic activity, low price, non-toxicity and environmental protection, exhibiting good application prospects. Based on this, this paper reviews the research progress of propane dehydrogenation from two aspects: the mechanism of PDH and the regulation of structure and properties for bulk metal oxide catalysts. It is summarized that coordinative unsaturated metal cation (Mcus4+) is the main dehydrogenation active site, and its concentration can be regulated by crystallite size, crystal phase, metal doping, noble metal nanoparticles loading, reducing gas (H2, CO) pretreatment, and so on. Finally, it is pointed out that the coupling of other dehydrogenation active sites (metals or metal oxides) on the basis of bulk metal oxides is an effective way to further improve the catalytic performance of PDH.

Key words: Propane dehydrogenation, Catalyst, Multiphase reaction, Metal oxides, Alkane

CLC Number: