Preparation of nanosized sodium–aluminum tungstate, NaAl(WO4)2

2011 ◽  
Vol 509 (25) ◽  
pp. 7022-7026 ◽  
Author(s):  
I. Koseva ◽  
V. Nikolov ◽  
A. Yordanova ◽  
P. Tzvetkov ◽  
D. Kovacheva
Keyword(s):  
Aluminum Tungstate

Effects of Tungsten Doping on the Electrical Properties of Hydrothermally Synthesized Aluminum Niobate

2021 ◽  
Vol 872 ◽  
pp. 55-60
Author(s):  
Rie Shimanouchi ◽  
Yuhei Matsumoto
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Electric Conductivity ◽  
Hydrothermal Treatment ◽  
Temperature Region ◽  
Single Phase ◽  
Mixing Ratio ◽  
Mixing Conditions ◽  
Higher Temperature ◽  
Aluminum Tungstate

The conditions for the synthesis of aluminum tungstate Al2(WO4)3 and aluminum niobate AlNbO4 were clarified using hydrothermal treatment and post-heating. Single-phase Al2(WO4)3 can be synthesized through the hydrothermal treatment of the starting materials at a mixing ratio of Al:W = 5:5 at 250 °C for 5 h and post-heating at 840 °C for 6 h. The AlNbO4 was synthesized using the same method, under a hydrothermal treatment of Al:Nb = 2:8 and post-heating. As a result of investigating the products under various mixing conditions based on the synthesis of pure Al2(WO4)3 and AlNbO4, Nb could not be doped into Al2(WO4)3, but W-doped AlNbO4 was synthesized. The electric conductivity was measured for several samples of sintered W-doped AlNbO4, and the results showed that the electrical conductivity was improved within a higher temperature region by doping with W.

ChemInform Abstract: ON THE FORMATION OF ALUMINUM TUNGSTATE AND ITS PRESENCE IN TUNGSTEN OXIDE ON Γ-ALUMINA CATALYSTS

1980 ◽  
Vol 11 (21) ◽  
Author(s):  
R. THOMAS ◽  
F. P. J. M. KERKHOF ◽  
J. A. MOULIJN ◽  
J. MEDEMA ◽  
V. H. J. DE BEER
Keyword(s):  
Tungsten Oxide ◽  
Aluminum Tungstate ◽  
Alumina Catalysts

Solid solution single crystal growth of the aluminum tungstate–scandium tungstate system by a modified CZ method

2000 ◽  
Vol 208 (1-4) ◽  
pp. 466-470 ◽  
Author(s):  
N Imanaka ◽  
M Hiraiwa ◽  
S Tamura ◽  
G Adachi ◽  
H Dabkowska ◽  
...  
Keyword(s):  
Solid Solution ◽  
Crystal Growth ◽  
Single Crystal ◽  
Single Crystal Growth ◽  
Aluminum Tungstate

Single-crystal growth of aluminum tungstate–lutetium tungstate solid solution

2000 ◽  
Vol 209 (1) ◽  
pp. 217-219 ◽  
Author(s):  
N Imanaka ◽  
M Hiraiwa ◽  
S Tamura ◽  
G.Y Adachi ◽  
H Dabkowska ◽  
...  
Keyword(s):  
Solid Solution ◽  
Crystal Growth ◽  
Single Crystal ◽  
Single Crystal Growth ◽  
Aluminum Tungstate

Single-crystal growth of aluminum tungstate–scandium tungstate solid solution samples by the modified Czochralski method

1999 ◽  
Vol 200 (1-2) ◽  
pp. 169-171 ◽  
Author(s):  
N. Imanaka ◽  
M. Hiraiwa ◽  
S. Tamura ◽  
G. Adachi ◽  
H. Dabkowska ◽  
...  
Keyword(s):  
Solid Solution ◽  
Crystal Growth ◽  
Single Crystal ◽  
Czochralski Method ◽  
Single Crystal Growth ◽  
Aluminum Tungstate
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