Preparation of mesoporous Fe-Cu mixed metal oxide nanopowder as active and stable catalyst for low-temperature CO oxidation

doi:10.1016/S1872-2067(15)60922-6

Abstract

Abstract:

A series of mesoporous Fe-Cu mixed metal oxide nanopowders with different Cu/Fe molar ratios and high specific surface areas were synthesized via a simple, inexpensive, surfactant-free sol-gel route using propylene oxide as the gelation agent. The catalytic behavior of the nanopowders in low-temperature CO oxidation was investigated using a microreactor-gas chromatography system. The prepared materials were characterized by X-ray diffraction, N₂ adsorption-desorption, thermogravimetric-differential thermal analysis, temperature-programmed reduction, Fourier transform infrared spectroscopy, and transmission electron microscopy. These mesoporous Fe-Cu mixed metal oxide catalysts had nanocrystalline structures, narrow pore size distributions, and high surface areas; they showed high catalytic activities and stabilities in low-temperature CO oxidation. The addition of CuO to iron oxide affected the structure and catalytic performance of the iron oxide. The catalyst containing 15 mol% CuO had the highest specific surface area and catalytic activity, and showed high catalytic stability in low-temperature CO oxidation.

Key words: Iron oxide, Copper oxide, Metal oxide catalyst, Mesoporous nanopowder, CO oxidation, Sol-gel method

Ehsan Amini, Mehran Rezaei. Preparation of mesoporous Fe-Cu mixed metal oxide nanopowder as active and stable catalyst for low-temperature CO oxidation[J]. Chinese Journal of Catalysis, 2015, 36(10): 1711-1718.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(15)60922-6

https://www.cjcatal.com/EN/Y2015/V36/I10/1711

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