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After  mixing the water was removed by drying in air at 393 K for 15 h to
leave a product, which was then further heated to 773 K at a rate
of 50 K/h and then maintained at 773 K for 5 h. The calcined catalyst
was lubricated with 2 wt% stearic acid and formed into tablets
which were subsequently heated to 773 K at a rate of 100 K/h and
then maintained at 773 K for 1 h in flow of air. The tablets were
ground and sieved to 60¨C270 mesh.



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