Tailoring Effective FeOx/SiO2 Catalysts in Methane to Formaldehyde Partial Oxidation |
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| Authors: | F Arena T Torre A Venuto F Frusteri A Mezzapica A Paraliana |
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| Affiliation: | (1) Dipartimento di Chimica Industriale e Ingegneria dei Materiali, Università degli Studi di Messina, Salita Sperone 31, I-98166 S. Agata (Messina), Italy;(2) Istituto CNR-ITAE, Salita S. Lucia 29, I-98126 S. Lucia (Messina), Italy |
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| Abstract: | A preparation method of highly effective methane to formaldehyde partial oxidation (MPO) FeOx/SiO2 catalysts (Fe 0.09--0.43 wt%) is reported, based on  adsorption-precipitation (ADS/PRC) of FeII ions under controlled conditions. The performance of ADS/PRC catalysts in the MPO reaction at 650 °C has been compared with that of conventional systems prepared by incipient wetness (INC/WET) of silica carriers with aqueous solutions of FeIII. The ADS/PRC method, likely enabling a higher dispersion of the active phase, provides very effective MPO catalysts featuring CH4 turnover frequency (TOF) and HCHO productivity (STYHCHO) values larger than those of the counterpart INC/WET systems. |
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| Keywords: | methane partial oxidation formaldehyde FeOx/SiO2 catalysts preparation method Fe precursor dispersion HCHO productivity turnover frequency |
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