Other
Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: > Supported catalysts: > With precious metal or precious metal compounds as the active substance > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 3815.12.00.90
Platinum Supported Alumina Catalyst
A high-performance catalyst consisting of platinum dispersed on an alumina support, used primarily in petroleum refining for catalytic reforming processes. It falls under HTS 3815.12.00.90 as a supported catalyst with precious metal (platinum) as the active substance, not specified elsewhere. This classification applies to its role as a reaction accelerator in hydrocarbon processing.
Palladium on Carbon Catalyst
Activated carbon supported palladium catalyst employed in hydrogenation reactions for pharmaceutical and fine chemical synthesis. Classified under HTS 3815.12.00.90 due to palladium as the precious metal active substance on a carbon support, distinguishing it from unsupported forms. Essential for selective reduction processes in organic chemistry.
Rhodium on Alumina Catalyst
Rhodium supported on gamma-alumina, utilized in automotive catalytic converters for NOx reduction and hydrocarbon oxidation. HTS 3815.12.00.90 applies as an 'other' supported catalyst with precious metal compound active substance. Critical for meeting emission standards in vehicle manufacturing.
Platinum-Rhenium Reforming Catalyst
Bimetallic catalyst with platinum and rhenium on chlorinated alumina support for naphtha reforming in gasoline production. Falls under HTS 3815.12.00.90 as a supported precious metal catalyst not elsewhere specified. Enhances octane rating and yield in refinery operations.
Iridium Oxide on Titania Catalyst
Iridium oxide nanoparticles supported on titanium dioxide, applied in electrochemical reactions and fuel cell technology. Classified in HTS 3815.12.00.90 for supported precious metal compound catalysts, other than specified types. Key for advanced energy conversion applications.
Palladium on Silica Hydrogenation Catalyst
High-surface-area silica supported palladium catalyst for selective hydrogenation in agrochemical production. HTS 3815.12.00.90 designation for precious metal supported reaction accelerators. Widely used for crop protection chemical synthesis.
Gold on Ceria Catalyst for Oxidation
Nanogold particles supported on cerium oxide for low-temperature CO oxidation in air purification systems. Fits HTS 3815.12.00.90 as other supported precious metal catalysts. Applied in respiratory protection and indoor air quality devices.
Platinum Black on Carbon for Fuel Cells
Platinum black high-loading catalyst on vulcan carbon support for PEM fuel cell electrodes. HTS 3815.12.00.90 covers this supported precious metal preparation as reaction initiator. Enables proton exchange membrane hydrogen fuel cells.
Silver Chloride on Alumina DeNOx Catalyst
AgCl impregnated alumina catalyst for selective catalytic reduction of NOx with hydrocarbons. Classifies under HTS 3815.12.00.90 as other supported precious metal compound catalyst. Used in stationary diesel engine emission control.
Palladium Barium Sulfate Catalyst
Pd on barium sulfate support for Rosenmund reduction in pharmaceutical API synthesis. HTS 3815.12.00.90 for this poison-resistant supported precious metal catalyst. Prevents over-reduction in acid chloride hydrogenolysis.
Ruthenium on Carbon Hydrogenation Catalyst
Ruthenium metal supported on activated carbon for ammonia synthesis alternatives and fine chemicals. Fits HTS 3815.12.00.90 as other precious metal supported reaction accelerator. High activity under mild conditions.
Platinum Sponge on Asbestos-Free Support
High porosity platinum sponge on synthetic fiber support for laboratory gas purification. HTS 3815.12.00.90 classification for supported precious metal catalyst, other types. Removes trace impurities from hydrogen streams.
Mixed Precious Metal on Zeolite Catalyst
Pt-Pd bimetallic catalyst on Y-zeolite support for aromatic alkylation processes. Under HTS 3815.12.00.90 as other supported precious metal(s) catalyst. Used in cumene and ethylbenzene production.
Osmium Tetroxide on Polymer Support
Polymer-anchored osmium tetroxide catalyst for dihydroxylation of alkenes (Upjohn process). HTS 3815.12.00.90 for polymer-supported precious metal compound catalyst. Enables asymmetric synthesis in natural products.
Platinum-Palladium Dental Alloy Catalyst
Pt-Pd sponge alloy on ceramic support for investment casting burnout in dental prosthetics. Classifies HTS 3815.12.00.90 as supported precious metal catalyst for firing processes. Ensures clean mold release in crown/bridge fabrication.