Solid State Reaction Study of Hydrated Iron Oxide with Hydrated Nitrates of Nickel and Cobalt.

1964 ◽  
Vol 9 (2) ◽  
pp. 170-171 ◽  
Author(s):  
W. M. Keely ◽  
Harry W. Maynor
Keyword(s):  
Iron Oxide ◽  
Solid State ◽  
Solid State Reaction ◽  
Reaction Study ◽  
Hydrated Iron Oxide

Synthesis of Nanostructured Iron Oxide(III) Powders by Rapid Expansion of Supercritical Fluid Solutions

1998 ◽  
Vol 520 ◽  
Author(s):  
A.A. Burukhin ◽  
B.R. Churagulov ◽  
N.N. Oleynikov ◽  
Yu.V. Kolen'Ko
Keyword(s):  
Aqueous Solution ◽  
Thermal Decomposition ◽  
Iron Oxide ◽  
Solid State ◽  
Supercritical Fluid ◽  
Solid State Reaction ◽  
Zinc Ferrite ◽  
Rapid Expansion ◽  
Molar Ratio ◽  
Supercritical Aqueous Solution

ABSTRACTNanostructured a-Fe2O3 powders were generated by rapid expansion of supercritical fluid solutions (RESS, T=773 K, P=100 MPa) and by rapid thermal decomposition of precursors in solution ( RTDS, T=623 K, P=100 MPa) on lab RESS-setup from 0,040 M and 0,10 M aqueous solutions of Fe(NO3)3. The size of subcrystallites is about 22-29 nm. Comparison of reactivity of α-Fe2O3 powders in a model solid state reaction between a-Fe2O3 powders (generated by RESS from 0,040 M solution) and Li2CO3 (mole ratio 1:1) with literature data on a-Fe2O3 powders produced by other methods shows that its reactivity is markedly higher. A basic essence possibility of zinc ferrite ZnFe2O4 formation immediately at the stage of the rapid expansion (T=773K; P=100 MPa) of a supercritical aqueous solution of zinc and iron nitrates (molar ratio Zn:Fe=1:2; C=0. 1 M) was shown.

Solid state reaction study in the systems Li2CO3–FeC2O4·2H2O and Li2CO3–Fe2(C2O4)3·6H2O

2000 ◽  
Vol 346 (1-2) ◽  
pp. 115-132 ◽  
Author(s):  
V. Berbenni ◽  
A. Marini ◽  
G. Bruni ◽  
R. Riccardi
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Reaction Study

Solid-state reaction study on the system Ni-Li2CO3

1989 ◽  
Vol 32-33 ◽  
pp. 398-408 ◽  
Author(s):  
A MARINI ◽  
V BERBENNI ◽  
V MASSAROTTI ◽  
G FLOR ◽  
R RICCARDI ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Reaction Study

Solid-state Reaction Study on Physically and Tribochemically Prepared BaC2O4-SnC2O4 Mixtures

2012 ◽  
Vol 67 (7) ◽  
pp. 667-672 ◽  
Author(s):  
Vittorio Berbenni ◽  
Chiara Milanese ◽  
Giovanna Bruni ◽  
Alessandro Girella ◽  
Amedeo Marini
Keyword(s):  
Differential Scanning Calorimetry ◽  
Solid State ◽  
Mechanical Activation ◽  
Solid State Reaction ◽  
Differential Scanning Calorimetric ◽  
Temperature Differential ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Reaction Study ◽  
Modulated Temperature

The synthesis of barium metastannate, BaSnO3, by heating mixtures of metal oxalates, either physically mixed or subjected to a phase of mechanical activation, up to temperatures in the range 750- 1200 °C has been studied. Simultaneous thermogravimetric-differential scanning calorimetric (TGDSC) analyses and powder X-ray diffractometry have been applied to check the advancement of the reactions. BaSnO3, though slightly contaminated by BaCO3, can be obtained by heating the activated mixture up to T ≥ 1000 °C while heating a sample of a physical mixture at temperature as high as 1200 °C resulted in a mixture of BaSnO3, SnO2 and Ba2SnO4. The heat capacities of BaSnO3 samples prepared at temperatures between 1000 and 1200 °C have been measured by modulated temperature differential scanning calorimetry (MTDSC) in the temperature range 50-400 °C.

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