Nano dispersions for advanced applications
Nano-dispersions contain nanometer-sized zirconium-based oxide particles in a purely aqueous and completely inorganic system.
- Aqueous dispersion of mixed oxide
- 20–25 wt.% oxide (current standard*)
- pH 3–8, composition dependant
- Contain no organic additives, or stabilizers
- Nanometer size particles
- Low viscos ity; 1year
Auto-motive catalysis-filter applications
Diesel particulate filters (DPF’s) have been a standard component in the exhaust after treatment for many years for passenger cars, trucks and buses globally.
- The filter is regenerated either passively (NO2 oxidation) or actively (fuel injection). Catalytic materials are coated onto the filter to lower the temperature of soot oxidation and to promote NO2 formation.
- Gasoline particulate filters (GPF) are a more recent development. Although low in mass, GDI (Gasoline Direct Injection) engines emit a large number of very small (hazardous) soot particles.
- Any coating can lead to an increase in back pressure (reduced fuel economy and peak power, etc.)
Potential applications
- Emission control
- Binder
- Coating
- Nano-dispersions contain nanometer-sized zirconium-based oxide particles in a purely aqueous and completely inorganic system
- They are particularly suited to coated filter applications (e.g. DPF and GPF) providing catalytic activity with a low back pressure penalty and good adhesion
- Other applications include functional binders, coatings and anything requiring a combination of small particle size and specific function
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