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Studies on Indian Ocean Manganese Nodules: Part V. Physicochemical Characteristics and Catalytic Activity of Rare Earth Oxide Mixed Manganese Nodules

โœ Scribed by K.M. Parida; A.K. Sahoo; N.N. Das


Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
139 KB
Volume
183
Category
Article
ISSN
0021-9797

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โœฆ Synopsis


A series of rare earth oxide mixed manganese nodules (perovskite type mixed oxides) have been prepared by coprecipitation method followed by calcination at 900ยฐC and characterized by different techniques. The effect of rare earth ions on the surface, textural and catalytic activity for the oxidation of CO, and decomposition of H2O2 have been discussed. The activity for CO oxidation followed an order: Pr >/= La > Nd > Yb > Dy > Tb > Sm > Tm > Gd > Eu > Ce.


๐Ÿ“œ SIMILAR VOLUMES


Studies on Indian Ocean Manganese Nodule
โœ K.M. Parida; A.K. Sahoo; N.N. Das ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 144 KB

ร‡400ะŠC (8)(9)(10)(11). A number of attempts have been made to The promoting effect of Ag 2 O on the physicochemical properties modify the surface properties and catalytic activity of the and catalytic activity of manganese nodules has been investigated. nodules (10, 12, 13); for example, incorporati

Studies on Indian Ocean Manganese Nodule
โœ Kulamani Parida; Pramoda Kumar Satapathy ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 105 KB

In order to activate the naturally occurring material, sam-The effects of acetic acid treatment on the physicochemical ples 075/45 mm were treated with various concentrations properties and catalytic activity of manganese nodules have been (0.1 to 1 M) of acetic acid. About 10 g of the sample was st

Studies on Indian Ocean Manganese Nodule
โœ K.M. Parida; P.K. Satapathy ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 64 KB

The effects of alkali (sodium hydroxide) treatment on the physico-chemical properties and catalytic activity for H 2 O 2 decomposition and CO oxidation of Indian Ocean manganese nodules have been studied. The surface area, surface oxygen, surface hydroxyl groups, etc. increase with alkali treatment