Transition metal oxide pillared clay. 1: A comparative study of textural and acidic properties of Fe(III) pillared montmorillonite and pillared acid activated montmorillonite
- Council of Scientific and Industrial Research, Bhubaneswar (India). Regional Research Lab.
Fe(III) pillared montmorillonite samples have been prepared by intercalating trinuclear acetato hydroxy-iron (III) nitrate [Fe(COOCH{sub 3}){sub 7}OH 2H{sub 2}O]{sup +} NO{sub 3}{sup {minus}} between the layers of both Na-exchanged and acid-activated montmorillonite, followed by calcination and characterized by various techniques. The multistep ion exchange process gave better complex loading than the single step process. FTIR and Moessbauer spectral analysis showed the presence of the complex inside the silicate layers. Materials prepared from the two starting materials are thermally stable up to 500 C, having basal spacings of 18.0 and 17.6 {angstrom} and high surface areas of 284 and 276 m{sup 2}/g, respectively. The acid-activated pillared montmorillonite shows somewhat low complex intake, but has high acidity in comparison to the Na-exchanged material. Iron oxide pillared clay has gained considerable importance as it can be used in demetalization, reduction of NO by NH{sub 3}, and Fischer-Tropsch reactions.
- OSTI ID:
- 404386
- Journal Information:
- Journal of Colloid and Interface Science, Journal Name: Journal of Colloid and Interface Science Journal Issue: 1 Vol. 183; ISSN JCISA5; ISSN 0021-9797
- Country of Publication:
- United States
- Language:
- English
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