Synthesis of Fe2(MoO4)3/MoO3 Nanocatalysts by Solution Combustion Approach and Their Catalytic Performance for the Selective Oxidation of Methanol

Volume: 10 | Issue: 01 | Year 2024 | Subscription
International Journal of Applied Nanotechnology
Received Date: 04/19/2024
Acceptance Date: 07/23/2024
Published On: 2024-08-06
First Page: 37
Last Page: 47

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By: Ji Hun Ri, Jong Hyok Kim, Hyon A Ri, Kwang Son Pak, and Jun Ho Kim

Abstract

The Fe 2 (MoO 4 ) 3 /MoO 3 nanocatalysts comprising Fe 2 (MoO 4 ) 3 nanoparticles supported on MoO 3 nanorods were synthesized via two-step solution combustion approach and their catalytic performance for the selective oxidation of methanol were evaluated. The materials have been characterised using electron microscopy, powder X-ray diffraction and Raman spectroscopy. First, MoO 3 nanoparticles were prepared by solution combustion reaction employing ammonium nitrate as oxidant, and ammonium molybdate as fuel and Mo source. The synthesized MoO 3 nanoparticles were found to have orthorhombic crystal structure and rod-like shape with width and thickness of 50-200 nm and length of 0.2-1 μm. Then, the MoO 3 nanorods were dispersed in aqueous solution of the ferric nitrate as oxidant and glycine as fuel, and combustion was performed to prepare MoFeO x /MoO 3 precursor particles. To investigate the formation process of Fe 2 (MoO 4 ) 3 phases on MoO 3 nanorods, the precursors were calcined at different temperatures of 300-500 °C for 2h. The Fe 2 (MoO 4 ) 3 phases were not formed on MoO 3 nanorods in samples calcined at 300 and 400 °C. The XRD patterns of the samples calcined at 300 and 400 °C were consistent with that of the uncalcined sample. The Fe 2 (MoO 4 ) 3 /MoO 3 nanocatalysts comprising Fe 2 (MoO 4 ) 3 nanoparticles supported on MoO 3 nanorods were synthesized when the precursor particles were calcined at 500 °C for 2h. The size of Fe 2 (MoO 4 ) 3 phases formed on MoO 3 nanorods was less than 40nm. The catalytic performance of the synthesized Fe 2 (MoO 4 ) 3 /MoO 3 nanocatalysts for the selective oxidation of methanol to formaldehyde were compared with commercial catalysts. Selectivity to formaldehyde of the synthesized Fe 2 (MoO 4 ) 3 /MoO 3 nanocatalyst was higher than that of the commercial catalyst.

Key words: Iron molybdate, Solution combustion, Molybdenum trioxide, Formaldehyde

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How to cite this article: Ji Hun Ri, Jong Hyok Kim, Hyon A Ri, Kwang Son Pak, and Jun Ho Kim, Synthesis of Fe2(MoO4)3/MoO3 Nanocatalysts by Solution Combustion Approach and Their Catalytic Performance for the Selective Oxidation of Methanol. International Journal of Applied Nanotechnology. 2024; 10(01): 37-47p.

How to cite this URL: Ji Hun Ri, Jong Hyok Kim, Hyon A Ri, Kwang Son Pak, and Jun Ho Kim, Synthesis of Fe2(MoO4)3/MoO3 Nanocatalysts by Solution Combustion Approach and Their Catalytic Performance for the Selective Oxidation of Methanol. International Journal of Applied Nanotechnology. 2024; 10(01): 37-47p. Available from:https://journalspub.com/publication/ijan-v10i01-8991/
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