
Coarse BTO powder may be prepared by APT mild hydrogen reduction method. APT Mild Hydrogen Reduction Method to Produce Blue Tungsten Oxide After loaded on a boat, APT is placed in a multi tube furnace (11 tube electric furnace) and decomposed by heating. Hydrogen is injected into the furnace tube to maintain the reducing atmosphere. The decomposed gas and waste gas are ignited and burned out of the furnace tube. Phase composition of blue tungsten oxide can be adjusted by…