
Nanometer blue tungsten oxide may be applied for producing thermal insulation coating, which may be widely applied in fields of building and automotive in the future. Such tungsten oxide powder can be prepared by self-reduction of ammonium paratungstate, that is, by APT self-reduction method. What are the advantages of using APT self-reduction method to produce blue tungsten oxide powder? Both hydrogen (H2) and ammonia (NH3) are dangerous gases. In the production process, production safety accidents are easy to occur due…