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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If incorporated in complete gas purification apparatus
Assembled filtering/purifying equipment classifies in machinery chapter.
If rhodium is the active precious metal instead of gold
Specific precious metal types have dedicated subheadings.
If pure cerium compounds dominate over catalytic function
Rare-earth compounds without clear catalyst prep in Chapter 28.
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Import Tips & Compliance
• Particle size analysis mandatory for nano-gold verification; CARB certification for emission apps; separate from jewelry gold under Chapter 71
Related Products 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.