Ceramic Foam Products

Color - White or black
Materials:  Al2O3, SiC, Mullite,  Cordierite or ZrO2
Density, 0.5 g/cm3  
Porosity, % - (average): 80% (open and closed)
Maximum Use Temperature,°C -1700°C
Thermal Conductivity: 0.25~0.85W/mK (temperature dependent)
Flexural Strength - High
Linear thermal expansion: Low 


Typical Applications:
Typical applications are molten metal filtration, oil trapping and recovery, grease filters, hot-gas and steam cleaning filters, chemical and water purification processes. They can also be used as substrate support for membrane reactors. Other applications include hot plates, flameless volumetric combustion gas burners, low NOx burner, ethanol burners, volumetric receivers for concentrated solar radiations, solar thermochemical reactors for direct CO2 - CH4 reforms, high performance solar heat exchangers, refractory linings, catalist support, fire protection and stops, lamp shades etc.

In recent developments, pressureless sintered SiC ceramic foam products with porosity varing from 10 to 30 PPI have been successfully used as porous burners for (near) zero emission applications. Some typical examples are: internal combustion diesel engines, after-burner in SOFC (solid oxide fuel cell) systems, domestic boilers, etc.

 The growing usage of ceramic foam products in recent years stems from the favorable properties such as low density, low/high thermal conductivity, and from their excellent  thermal and chemical stability.


Test results have shown that the use of ceramic foam structures as catalyst support can be beneficial in case of strongly exothermic or endothermic reactions. For these cases the thermal conductivity of the foam material is very important as it can allow for a rapid heat exchange which may accelerate the mass transfer. In addition, a thin layer of catalyst coated on foam (instead of catalyst pellet as in the case of packed bed configuration) and the macro porosity of the foam structure can improve the diffusion of reactants and products which may lead to a better performance of the catalyst.


 ceramic foam plate

Foam Plate 1

150x150x15 mm

 ceramic foam plate

Foam Plate 2

200x300x15 mm

ceramic foam block 

Foam Block

200x200x50 mm

 ceramic foam cylinder

Foam Cylinder

Ø200x200x20 mm

 ceramic foam composite

Composite ceramic foam plate

10 PPI/40 PPI or Al2O3/SiC combination

 ceramic foam special shapes

Tailor made ceramic foam special shapes

 ceramic foam lampshades

 Ceramic Foam Lamp Shades

SiC ceramic foam burner 

SiC ceramic foam plate

10/20/30 PPI, 200x300x15 mm



Foam ceramic burners

Product code: BSP C05A

Description: Al2O3 foam ceramic blocks and plates,  porosity 10-60 PPI
Application: Bio ethanol burners or flat gas burners.

When used in ethanol burners, ceramic foam block helps holding up the ethanol fuel (therefore avoiding spilling), and at the same time facilitates a special attractive, even set of flames and simple operation down to the last drop.

In case of gas burners, the ceramic foam plate helps to improve the gas combustion efficiencies, reduce combustion noises and pullutant emissions, while at the same time generate more attractive flames.

When required, ceramic foam burners impregnated with Pt/Pd/Ce catalysts can also be supplied. Tests have shown that catalytic burners significantly improve the combustion efficiency and provide a much better flame pattern.


ceramic foam block 

 ceramic foam ethanol burner

ceramic foam ethanol burner

 ceramic foam gas burner
Ceramic foam ethanol burner Ceramic foam ethanol burner Ceramic foam gas burner




Flat ceramic foam burners with a high emissivity coating
Product code: BSP C05


Flat ceramic foam burner


Key properties:  
Material: Cordierite or Mullite
Porosity: 10 - 80 PPI  
Thickness: 10-40 mm
Size: max. 400x400 mm   
Max. capacity: 2000 kw/m2
Turndown ratio: 20

Suitable for:
Natural gas, LPG, propane/butane, bio gas

Condensing boilers, infrared heaters/dryers, fireplaces, gas treatment post burners



Solar Energy Receiver / Heat Exchanger

solar energy volume receiver


Ceramic SiC foam plate in combination with a die-cast aluminium component to form an ideal 
high performance solar energy volumetric receiver / heat exchanger

Cylindrical ceramic foam burners
Product code: BSP C06

Material: Al2O3, mullite, cordierite, Y2O3 stabilized ZrO2 or SiC  
Porosity: 10-80 PPI
Size: Diameter 10-300 mm, Thickness 5-25 mm, Length up to 900 mm

Also possible: with a high emissivity ceramic coating or loaded with partial oxidization catalyst

Application: condensing boilers, Stirling engines, CSP volumetric receivers, special gas burners


 cylindrical ceramic foam burner    cylindrical ceramic foam burner    cylindrical ceramic foam burner   cylindrical ceramic foam burner       

1.  Free flame burner for gas/ethanol fireplaces

cylindrical ceramic foam burner      cylindrical ceramic foam burner      cylindrical ceramic foam burner  

2.  Radiant gas burner for high efficiency and low NOx /CO emission boilers, ideal substitute for blue flame burners

 cylindrical ceramic foam burner




3.  SiC foam cylinders used as solar volumetric receivers and solar chemical reactors.

   cylindrical ceramic foam












Catalytic Fireplace

Catalytic fireplaces are wood burning units that contain a device similar to the catalytic converter in a car. These devices are known as catalytic combustors and are also commonly referred to as cats. These can come as fireplace inserts which are able to be installed into both pre-fabricated and masonry fireplaces.

Normally smoke will burn or oxidize, at a temperature of 540 °C (1,000 °F) or higher. Burning a stove this hot would require continuous intense fire and would require a higher wood consumption. The answer to eliminate this is the catalytic combustor.

Wood smoke gases coming in contact with the catalyst, causes chemical changes to take place. This will then allow the smoke to ignite at temperatures around 260 °C (500 °F). This temperature is easily achieved in the firebox of a wood burning stove. As the wood gases ignite and burn within the catalytic combustor, clean by-products of water vapor (H20) and carbon dioxide (CO2) are emitted.

A catalytic combustor is a foam or honey-comb shaped chamber made of ceramic materials. It is coated in a metal catalyst, such as palladium or platinum or a combination of both, which is then installed into the firebox near the base of the chimney or flue. The purpose of this device is to lower the combustion temperature of the smoke and gas emissions thereby causing them to burn up before they even leave the combustor. This, of course, means fewer emissions are released into the atmosphere. It also makes the catalytic fireplace a more fuel efficient unit because it produces more heat for less wood.

Catalytic combustors are available in retrofit kits that enable consumers to convert non-catalytic wood burning units into a money saving, environmentally friendly catalytic fireplace.

Performance of stoves equipped catalytic combustors:

Thermal efficiency: > 85%

CO emission: < 70 ppm

Particulate emission: < 35 ppm

Apart from wood burning fireplaces, catalytic combustor can also be used for flueless gas fireplaces. A recent development has shown a new generation of catalyst combustor using nano technology is able to "burn" CO at temperatures below 100 °C (210 °F).



catalytic cumbustorcatalytic cumbustor




Filcat® -- A new development to combat fireplace emissions


Modern heating systems fired by solid fuels (especially firewood and pellets are designed to be efficient, safe, low-emission solutions that help to increase the comfort of building occupants. One of our major efforts in this area focuses on developing ways of reducing flue gas emissions, especially particulate matter. Filcat® is just one example of our recent developments.






 Filcat®  unit


 Inside view






 Top view


 Ceramic foam plate loaded with catalyst

Filcat® is in fact a combination of particulate filter, catalytic combustor and heat exchanger, specially developed for wood burning fireplaces. Filcat® can be used both for new fireplaces and for retrofit of existing ones. Consisting of a metal casing and 3 layers of ceramic foam plates (porosity between 20 and 60 PPI) loaded with high performance catalysts, Filcat® is able to reduce fireplace dust emission of more than 80% and CO emission below 70 ppm and at the same time to improve the fireplace’s thermal efficiency for at least 10%.
Specifications of Filcat®
Size, cm
Capacity, kW
Filcat® A
Filcat® B


Filcat® can also be up-scaled for wood pellet burning systems, bio mass combustion systems, wood gas CHP plants, wood chip heating systems, waste incineration plants and other industrial applications.


Closed Cell Ceramic Foam

high temperature insulation


Alumina ceramic foam with closed cell system features its low density, high-strength and excellent thermal shock resistance, playing an important role in high temperature insulation applications.

The advantages of closed cell alumina ceramic foam for high temperature insulation include:

  • Free from ceramic fiber and organic binder.
  • Readily machinable.
  • High application temperature from 1000 °C up to 1750 °C.
  • Higher strength than refractory ceramic fiber and lightweight ceramic brick (4-16 MPa).
  • Ultra-low density: 0.4-0.6 g/cm3.
  • Porosity between 80-90%.
  • Pore size between 0.1-1 mm.
  • Very low thermal conductivity (0.2 W/mK) and linear thermal expansion coefficient.
  • Excellent thermal shock resistance.
  • Good performance at high temperature in strongly reducing and harsh environment.
  • Reduced maintenance and improved service life.
  • Energy savings up to 25% compared to the conventional insulation materials.


Example applications of ceramic foam insulation are:

  • 1000-1750°C laboratory or industrial furnace lining.
  • SiC or MoSi2 heated furnace lining.
  • Furnace, kiln and oven hot face lining.
  • Kiln firing setters and light kiln cars.
  • Burner blocks.
  • Combustion chamber of thermal power plants.
  • Rocket launchers.
  • Radar absorbing and high temperature insulation for aircraft jet engine exhaust gases.
  • Nuclear reactors.

Available sizes: up to 900x600x50 mm.

Price: available upon request.