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Honeycomb substrate, also called support, is one of the components of the supported catalyst. The catalytically active component is supported on the surface of the carrier, which is mainly used to support the active component so that the catalyst has specific physical properties. The carrier itself generally does not have catalytic activity.
The honeycomb substrate is primarily used in automotive and other high-temperature process exhaust systems. Made mainly of cordierite, it facilitates the catalytic conversion of exhaust gases after being coated with a catalyst to meet national emission standards. It features a large surface area, small expansion coefficient, high strength, and high water absorption.
| Name | Index | Tolerance Range |
|---|---|---|
| Wall Thickness | 0.17mm | 0.03mm-0.02mm |
| Volume Weight | ≤460G/L | ±60G/L |
| Outside Dimension (25-100mm) | - | ±1mm |
| Outside Dimension (100-15mm) | - | ≤±1% |
| Mesh Number | 200/300/400 mesh | - |
| Chemical Composition | Unit | Index |
|---|---|---|
| Al2O3 | % | 35.1±1.6 |
| MgO | % | 13.5±1.5 |
| SiO2 | % | 50.0±1.8 |
| Thermal Expansion (20-800ºC) | ºC | ≤1.5*10-6 |
| Water-absorbing rate | % | 24±4% |
| Open Area | % | ≥70% |
