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Ethane To Ethylene On Zirconia-Molybdenum Catalysts.pdf

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Preview of Ethane to Ethylene on Zirconia-Molybdenum Catalysts
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👤 Author: Chinese User
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Summary

Two series of zirconia supported molybdophosphoric acid (MPA) and MoOx catalysts were synthesized with varying contents of MPA or MoOx (5-25 wt.%). The catalytic activity was evaluated for oxidative dehydrogenation of ethane (ODHE) to ethylene in a fixed bed catalytic reactor. The Mo oxide phases formed due to the decomposition of MPA during calcination were found to be more active for ODHE than the Mo oxides obtained directly from ammonium heptamolybdate precursor. Brunauer-Emmett-Teller (BET) surface areas and pore volumes were found to depend on Mo loading and varied in the range from 19 to 50 m2/g. X-ray diffraction (XRD) demonstrated the formation of Zr(MoO4)2 phase. Fourier transform infrared spectroscopy (FTIR) confirmed the decomposition of MPA after calcination. Catalytic results revealed that the decomposed MPA/ZrO2 catalysts exhibited better performance compared to MoOx/ZrO2 solids with similar Mo contents. The yield of C2H4 increased up to 15 wt.% MPA loading and then decreased with further increase in MPA content. Among all catalysts tested, the 15 wt.% MPA/ZrO2 exhibited the best performance.

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Two zirconia-supported catalysts, MPA and MoOx, were synthesized and tested for ethane to ethylene conversion at low temperatures. Mo oxides from MPA decomposition showed higher activity.

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  • File Format: PDF
  • File Size: 958 KB
  • Pages: 9
  • Language: EN
  • Author: Chinese User
  • Total Downloads: 39
  • Last Updated: 2 months ago

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