Tungsten Nitride Ammonia Synthesis Catalyst from Japan
W2N catalytic phase for high-pressure ammonia synthesis as Haber-Bosch alternative. Inorganic nitride classified under HTS 3815.90.1000 as reaction accelerator. Nitrogenase-inspired structure.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• N2 dissociation activity data essential for catalyst classification
• Cubic WN phase confirmation via XRD differentiates from wear coatings
• High-pressure reactor compatibility specifications