A number of natural polyphenols (chlorogenic acid (9), cordigol (1 l), cordigone (12), danthrone (l), 1,5-dihydroxy-3-methoxyxanthone (Z), eriosematin (7), flemichin D (S), frutinone A (6), mangiferin (4), quercetin (5), 1,3,6,7-tetrahydroxyxanthone (3) and verbascoside (10)) were investigated for t
Electrochemical behaviour of some activated manganese ores
β Scribed by Julio B. Fernandes; Buqui D. Desai
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 435 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0378-7753
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π SIMILAR VOLUMES
A comparison of the behaviour of commercial electrochemical manganese dioxide (y\_MnO,) and non-stoichiometric anodic Mn,O,(OH), was made. Anodic oxide proves to he composed mainly by MnO, (ramsdellite) and MnOOH (manganite), and contains more water and OH-than y-MnO,. Hydroxide ions were shown to d
Ah&met--A comparative study on eleven MnO, preparations belonging to the a-, &, y-and &groups has heen made tisiug the TGA. DTA and X-ray diffraction techniques. Although each preparation has its characteristic thermal behaviour, yet members belonging to the same group have some common features. The