BARC/PUB/2005/0310

 
 

On reduction behavior of Al2(WO4)3: A combined powder XRD and temperature programmed reduction (TPR) studies

 
     
 
Author(s)

Achary, S. N.; Varma, S.; Tyagi, A. K.
(ApCD)

Source

Journal of Physics and Chemistry of Solids, 2005. Vol. 66: pp. 1200-1205

ABSTRACT

In this manuscript, we report the reduction behavior of Al2(WO4)3 as observed from the temperature programmed reduction (TPR) studies. The title compound crystallizes in orthorhombic lattice with unit cell parameters: 12.6011(2), 9.0622(2), 9.1427(2)Å and VZ 1044.03(3), (Å)3, Z=4 (space group: Pbcn). This compound can be reduced by hydrogen to AlWO4 above 800oC, which is otherwise prepared under high pressure and high temperature and thus indicates an alternate route for the synthesis of AlWO4 at ambient pressure. On prolonged reduction or increasing the temperature of reduction metallic tungsten is observed. The details of the results of the TPR studies are discussed.

 
 
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