scholarly journals Changes occurring at surfaces during reactions between powdered iron(III) oxide and some carbonates

1973 ◽  
Vol 26 (6) ◽  
pp. 1353 ◽  
Author(s):  
J Beretka ◽  
MJ Ridge
Keyword(s):  
Carbon Dioxide ◽  
Solid State ◽  
Water Vapour ◽  
Solid State Reaction ◽  
Barium Carbonate ◽  
Aluminium Oxide ◽  
Powdered Iron

The spikes, platelets, and other features with extensive surfaces observed on the particles of the product of the reaction of barium carbonate with iron(III) oxide or aluminium oxide result from reaction with carbon dioxide in the atmosphere in the presence of water vapour. They do not appear to be features of the solid state reaction as was thought earlier.

Kinetics of solid state reaction between barium carbonate and cupric oxide

1992 ◽  
Vol 23 (4) ◽  
pp. 493-503 ◽  
Author(s):  
S. G. Acharya ◽  
S. K. Bhatia ◽  
H. S. Shankar
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Barium Carbonate ◽  
Cupric Oxide ◽  
Kinetics Of

Preparation and Identification of Barium Monoferrite by Solid State Reaction Method

2019 ◽  
Vol 34 ◽  
pp. 46-52
Author(s):  
Iulian Ştefan ◽  
Gabriel Benga ◽  
Ionel Dănuț Savu ◽  
Sorin Vasile Savu ◽  
Adrian Olei
Keyword(s):  
Particle Size ◽  
Solid State ◽  
Mechanical Alloying ◽  
Solid State Reaction ◽  
Barium Carbonate ◽  
Solid State Reaction Method ◽  
High Energy ◽  
Phase Identification ◽  
Formation Temperature ◽  
Reaction Method

In this paper, BaFe2O4 was prepared from BaCO3 and Fe2O3 powders through the solid state reaction method. This method starts by mixing the barium carbonate and iron oxide in order to homogenize the raw materials and takes place in a wet medium. For a better homogenization of BaCO3 and Fe2O3 powders and in order to reduce the monoferrite formation temperature, it was used the mechanical alloying process for 3 and 9 hours in a high energy ball mill. Particle size distributions of the milled powders were analyzed by a BROOKHAVEN 90PLUS device. To understand the phase formation temperature, thermogravimetry analysis was carried out. The phase identification of the calcined powder was carried out by D8 Discover Bruker X-ray diffractometer. The results showed that once with the reduction of powders particle size, in the mechanical alloying process, the temperature of the solid state reaction of barium monoferrite was also reduced.

Solid-state reaction between molybdena and alumina: effect of water vapour pressure on the dispersion and nature of the supported phases

1994 ◽  
Vol 4 (1) ◽  
pp. 47-50 ◽  
Author(s):  
Margarita del Arco ◽  
Silvia R. G. Carrazán ◽  
Vicente Rives ◽  
Francisco-Javier Gil-Llambías ◽  
Pilar Malet
Keyword(s):  
Solid State ◽  
Water Vapour ◽  
Solid State Reaction ◽  
Vapour Pressure ◽  
Water Vapour Pressure ◽  
Effect Of Water

Kinetics of the NH3 and CO2 solid-state reaction at low temperature

2014 ◽  
Vol 16 (43) ◽  
pp. 23604-23615 ◽  
Author(s):  
J. A. Noble ◽  
P. Theule ◽  
F. Duvernay ◽  
G. Danger ◽  
T. Chiavassa ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Solid State ◽  
Low Temperature ◽  
Solid State Reaction ◽  
Interstellar Ice ◽  
Kinetics Of

Ammonia and carbon dioxide play an important role in both atmospheric and interstellar ice chemistries.

Sign in / Sign up

Export Citation Format

Share Document