Reduction of MgO-supported iron oxide: formation and characterization of Fe/MgO catalysts

✍ Scribed by Gary Bond; Kieran C. Molloy; Frank S. Stone

• Book ID: 104296695
• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 685 KB
• Volume: 101-103
• Category: Article
• ISSN: 0167-2738
• DOI: 10.1016/s0167-2738(97)00179-3

✦ Synopsis

Fe-oxide/MgO

(5-30 mol% Fe) was prepared by calcination of coprecipitated precursors. Reducibility in H, at 693 K was measured gravimetrically and volumetrically. All samples yielded metallic iron (Fe") suitable for catalytic use but much unreduced Fe*+ remained, stabilized by the MgO. The mean particle size of the supported metallic iron was determined by X-ray line-broadening and its surface area by CO chemisorption. Mossbauer spectroscopy confirmed the presence of Fe', Fe'+ and Fe3+ in the reduced material.