Search Results

You are looking at 41 - 50 of 58 items for :

  • "manganese oxide" x
  • Refine by Access: All Content x
Clear All

. 135 55 73 Szabó, Z., Gy. Grasselly 1980: Genesis of manganese oxide ore in the Urkút basin, Hungary. -- In: Varentsov, I.M., Gy. Grasselly (Eds

Restricted access

manganese oxide precipitation Acta Geologica Polonica 54 61 76 . Guidry , S.A. , H.S. Chafetz 2002 : Petrography and stable

Restricted access

]. Brown pigments Terra d'ombra [ 5 ] containing iron and manganese oxides. Green pigments Besides green earth [ 9 ], Valerio Castello used copper resinate [ 10 ], in all the examined paintings

Restricted access
Journal of Thermal Analysis and Calorimetry
Authors: Agnieszka Jabłońska–Wawrzycka, Małgorzata Zienkiewicz, Maciej Hodorowicz, Patrycja Rogala, and Barbara Barszcz

residues are different. As a result of high concentration of oxygen in furnace atmosphere oxidation process occurs and as a final product of thermal decomposition non-stoichiometric mixtures of manganese oxides Mn 2 O 3 are formed (Tables 8 , 9 ) [ 42

Restricted access
Central European Geology
Authors: Máté Zsigmond Leskó, Richárd Zoltán Papp, Boglárka Anna Topa, Ferenc Kristály, Tamás Vigh, and Norbert Zajzon

0.0 to 2.6 Clayey manganese oxide –0.4 to 0.0 Red clayey limestone –4.4 to –0.4 Light red limestone with Mn

Open access
Journal of Thermal Analysis and Calorimetry
Authors: Renato Vessecchi Lourenço, Marcelo Kobelnik, Clóvis Augusto Ribeiro, and Fernando L. Fernonani

hematite (Fe 2 O 3 ) and zinc silicates (ZnSiO 4 ). However, after the calcinations, the obtained aerobic residues demonstrate the presence of others characteristic lines, which were attributed to silicate (SiO 2 ) and manganese oxide (MnO) compounds ( Fig

Restricted access

. Examples include natural and synthetic zeolites, clay minerals, and oxides (alumina, ferrites, goethite, and manganese oxide) [ 1 ]. Literature references present the possibilities of use of various mineral and carbon substances to produce complex

Restricted access

. “Effects of ZnO and MoO 3 doping on surface and catalytic properties of manganese oxide supported on alumina system” S. M. Ibrahim , G. A. El-Shobaky , G. M. Mohamed , N. A. Hassan The Open Catalysis Journal 2011 , 4 , 27 – 35

Restricted access

. Moritomo , Y , Asamitsu , A , Kuwahara , H , Tokura , Y 1996 Giant magnetoresistance of manganese oxides with a layered perovskite structure . Nature 380 : 141 10.1038/380141a0 . 3

Restricted access

contain other minerals such as clays, mica, quartz which reflects their geological source and method of preparation. Brown ochres and umbers contain additional manganese oxides which give them their darker colour. Studies of a paint cross section from the

Restricted access