Iiron Molybdate catalysts are used to produce formaldehyde from methanol, and they have many benefits, including: 

High yield: Iron molybdate catalysts can produce high yields of formaldehyde. 

Long lifetime: These catalysts have a long operating lifetime. 

Low methanol consumption: The use of iron molybdate catalysts results in low consumption of methanol per unit. 

High-quality product: Iron molybdate catalysts produce high-quality formaldehyde aqueous solutions. 

Energy efficient: The process of using iron molybdate catalysts to produce formaldehyde from methanol is energy efficient.