XPS study of as-prepared and reduced molybdenum oxides
✍ Scribed by J.-G. Choi; L.T. Thompson
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 500 KB
- Volume
- 93
- Category
- Article
- ISSN
- 0169-4332
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## Abstract Laser Raman spectroscopy (LRS) and x‐ray photoelectron spectroscopy (XPS), combined with x‐ray diffraction (XRD), have been used to characterize the phases in Mo–RE–O (RE = Sm, Tb, Yb) systems. Two clearly differentiated composition regions were observed, namely the RE‐rich region (__x_
Reduction of ammonium molybdate, (NH 4 ) 6 Mo 7 O 24 '4H 2 O, with hydroxylamine hydrochloride. NH 2 OH'HCl, at ambient temperature in aqueous solutions results in amorphous MoO 3 'nH 2 O oxide. Subsequent heat treatment of this oxide yields Mo 1؊ O 2 or a hydrogen molybdenum bronze, H x MoO 3 (x:1)