Solid acidity of MoO3 synthesized by solution combustion method and acetalization of formaldehyde using it

Year : 2025 | Volume : 12 | Issue : 03 | Page : 01 09
    By

    Yong Gwon Pak,

  • Jong Hyok Kim,

  • Ryong Wan Ham,

  • Jun Ho Kim,

  • Phyong Mu Pak,

  1. Associate Professor, High-Tech Research and Development Center, Kim Il Sung university, Pyongyang, North Korea
  2. North Korea, High-Tech Research and Development Center, Kim Il Sung university, Pyongyang, North Korea
  3. Professor, High-Tech Research and Development Center, Kim Il Sung university, Pyongyang, North Korea
  4. Professor, High-Tech Research and Development Center, Kim Il Sung university, Pyongyang, North Korea
  5. Associate Professor, High-Tech Research and Development Center, Kim Il Sung university, Pyongyang, North Korea

Abstract

MoO 3 nanoparticles were synthesized via solution combustion approach. Ammonium nitrate was used as oxidant and ammonium molybdate as fuel in combustion reaction. XRD, FTIR and Raman spectroscopy results showed that MoO 3 nanoparticles were successfully synthesized by the solution combustion reaction. The SEM analysis showed that synthesized MoO 3 nanoparticles have rod-like shape with width and thickness of 50-200nm and length of 0.2-1μm, respectively. The XRD pattern and morphology of MoO 3 nanoparticles synthesized by solution combustion method were consistent with those of MoO 3 nanoparticles synthesized by hydrothermal method. This result indicates that MoO 3 nanoparticles with high crystallinity as molybdenum trioxide synthesized by hydrothermal method were synthesized by solution combustion method. MoO 3 nanoparticles synthesized by solution combustion method had higher specific surface area and Brønsted acidity than molybdenum trioxide prepared by thermal decomposition of ammonium molybdate. The molybdenum trioxide acted as solid acid catalyst for the acetalization reaction of formaldehyde with ethanol. Formaldehyde conversion over MoO 3 synthesized by solution combustion method was higher than that over MoO 3 prepared by thermal decomposition of ammonium molybdate. Under batch condition with catalyst concentration of 4% and a reaction time of 90min, the formaldehyde conversion was achieved up to 44%. This catalyst also exhibited high stability, even after the eighth reaction cycle, the formaldehyde conversion did not decrease significantly.

Keywords: Solution combustion, Molybdenum trioxide, Ethylal, Diethoxymethane, solid acid

[This article belongs to Journal of Catalyst & Catalysis ]

How to cite this article:
Yong Gwon Pak, Jong Hyok Kim, Ryong Wan Ham, Jun Ho Kim, Phyong Mu Pak. Solid acidity of MoO3 synthesized by solution combustion method and acetalization of formaldehyde using it. Journal of Catalyst & Catalysis. 2025; 12(03):01-09.
How to cite this URL:
Yong Gwon Pak, Jong Hyok Kim, Ryong Wan Ham, Jun Ho Kim, Phyong Mu Pak. Solid acidity of MoO3 synthesized by solution combustion method and acetalization of formaldehyde using it. Journal of Catalyst & Catalysis. 2025; 12(03):01-09. Available from: https://journals.stmjournals.com/jocc/article=2025/view=222074


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Regular Issue Subscription Original Research
Volume 12
Issue 03
Received 18/06/2025
Accepted 01/07/2025
Published 02/08/2025
Publication Time 45 Days
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