The electron emission performance of barium tungsten electrodes is affected by a combination of factors, including temperature, surface state, composition, electric field, aging and use. These influencing factors interact with each other and jointly determine the emission efficiency and service life of the electrode.

Ammonium metatungstate (AMT) is a significant tungsten compound, highly valued for its catalytic properties in industrial applications. For instance, in the production of denitration catalysts, AMT-based catalysts typically use titanium dioxide as a carrier. Through specialized preparation processes, AMT is loaded onto the carrier, forming a catalyst with high activity and stability, used to adsorb pollutants like sulfur and nitrogen oxides emitted from coal-fired power plants. In petroleum refining, AMT serves as a catalyst to promote cracking reactions, hydrodesulfurization, and hydrodenitrogenation reactions.

Ammonium metatungstate (AMT), an important inorganic compound, holds a pivotal position in modern industry due to its unique physicochemical properties. In material preparation, AMT serves as a critical raw material for producing high-performance tungsten-based materials. Through processes like thermal decomposition, AMT can yield uniform, high-purity tungsten powder, which is essential for manufacturing tungsten-based alloys and tungsten carbide powder.

Ammonium metatungstate (AMT), with the molecular formula H₂₈N₆O₄₁W₁₂, is a significant tungstate compound. Structurally, AMT consists of ammonium cations and metatungstate anions, with its unique Keggin-type polyoxoanion structure contributing to its excellent solubility—a key distinction from ammonium paratungstate.