
Development, manufacture and distribution of catalytically coated catalysts for emission reduction from engines and industrial plants
INTERKAT Catalyst GmbH
53639 KönigswinterNew on Amplifa
About INTERKAT
INTERKAT Catalyst GmbH, based in Königswinter, is a specialist supplier of environmental catalysts. Its core business covers the development, manufacture and distribution of emission-reduction catalysts, with a focus on the catalytic coating of ceramic and metal substrate materials with active washcoat. The portfolio includes oxidation catalysts, diesel particulate filters (DPF), SCR catalysts, SCR-on-DPF systems (SDPF), three-way catalysts, hydrolysis and ammonia slip catalysts as well as customer-specific special catalysts. Fields of application range from exhaust aftertreatment for on-road and off-road engines to stationary gas engines (biogas, natural gas, CHP units) and stationary sources such as roasting plants, furnaces and VOC reduction. In-house laboratories with gas test benches and a scalable, self-developed production system enable production from single pieces to series. The company also offers contract coating, prototype manufacturing, analytics services and catalyst recycling.
- Site
- Königswinter
- Processes
- Catalytic coating of substrate materials (washcoat coating), Oxidation catalysts (OC), Diesel particulate filters (DPF), SCR catalyst on diesel particulate filter (SDPF), Catalysts for selective catalytic reduction (SCR), Three-way catalyst (TWC), Hydrolysis catalyst (H-Kat), Ammonia slip catalyst (ASC)
- Materials
- Ceramic (substrate material/monolith), Metal (substrate material/monolith), Platinum (precious metal, active component), Palladium (precious metal, active component), Vanadium/Titanium Dioxide (SCR catalyst), Zeolite (SCR catalyst / adsorbent), Ceramic Monoliths (Substrate Material), Metallic Monoliths (Substrate Material)
- Certificates
- DIN EN ISO 9001:2015, DIN EN ISO 14001:2015, DIN EN ISO 45001:2023, ISO 9001:2015, ISO 14001:2015, ISO 45001:2023
- Founded
- 2002
- Industries
- Automotive OEM Off-Road, Agricultural Machinery, Construction Machinery, Marine, Rail Vehicles, Industrial Engines
- 01
Contract development / feasibility studies
- 02
Washcoat synthesis and laboratory characterization
- 03
Prototype manufacturing and testing (laboratory gas test bench)
- 04
Catalytic coating of ceramic and metal substrates
- 05
Quality control and analytics
- 06
Series production and distribution
- 07
Catalyst recycling
Materials & Processes
Ceramic Monoliths (Substrate Material)
Honeycomb and wall-flow substrates as a basis for catalytic washcoat coatings.
Metallic Monoliths (Substrate Material)
Metallic substrates, among other things for compact applications and unconventional substrates such as wire knits, sheets and foams.
Platinum
Precious metal as active component of oxidation catalysts for CO, HC and VOC conversion.
Palladium
Precious metal as active component of oxidation catalysts, combined with promoters and binders.
Vanadium/Titanium Dioxide
Active component of SCR catalysts with high sulfur resistance and temperature stability up to 650 °C.
Zeolite
Basis for SCR catalysts, especially for high-temperature applications.
Sites

Königswinter
DEHeadquarters: development, production, sales
- Lot size
- Single piece to series
- Materials
- Ceramic, Metal, Platinum, Palladium, Vanadium/Titanium Dioxide, Zeolite
- Production lines for catalytic coating (two lines)
- Production line for washcoat production
- Laboratory gas test bench
- Synthesis gas test bench with FT-IR analytics
- XRF-EDX elemental analysis system
- BET measuring device (nitrogen sorption)
Products & Components






Inside the production





Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Catalytic coating of substrate materials (washcoat coating)Surface | – | – | – | Single piece – Series | Ceramic, Metal |
| Oxidation catalysts (OC)Surface | – | – | – | – | Ceramic, Metal, Platinum, Palladium |
| Diesel particulate filters (DPF)Surface | – | – | – | – | Ceramic, Metal |
| SCR catalyst on diesel particulate filter (SDPF)Surface | – | – | – | – | Ceramic, Metal |
| Catalysts for selective catalytic reduction (SCR)Surface | – | – | – | – | Vanadium/Titanium Dioxide, Zeolite |
| Three-way catalyst (TWC)Surface | – | – | – | – | Ceramic, Metal |
| Hydrolysis catalyst (H-Kat)Surface | – | – | – | – | Ceramic, Metal |
| Ammonia slip catalyst (ASC)Surface | – | – | – | – | Ceramic, Metal |
| Contract coatingSurface | – | – | – | – | Ceramic, Metal |
| Coating of unconventional substrates (wire knits, sheets, foams etc.)Surface | – | – | – | – | Metal, Ceramic |
| Prototype manufacturing / prototype developmentEngineering | – | – | – | – | Metal, Ceramic |
| Catalyst recyclingEngineering | – | – | – | – | – |
| Catalyst activity testsTesting | – | – | – | – | – |
| Elemental analysis (XRF-EDX)Testing | – | – | – | – | – |
| Determination of specific surface area (BET), pore volume, pore size distributionTesting | – | – | – | – | – |
| Catalyst synthesis and characterization / washcoat developmentEngineering | – | – | – | – | – |
6 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Laboratory gas test bench | – | – | – | – | Königswinter |
| Synthesis gas test bench with FT-IR analytics | – | – | – | – | Königswinter |
| XRF-EDX elemental analysis system | – | – | – | – | Königswinter |
| BET measuring device (nitrogen sorption) | – | – | – | – | Königswinter |
| Production line for washcoat production (flue gas NOx removal) | – | 1 | – | 2015 | Königswinter |
| Production lines for catalytic coating (two lines) | – | 2 | – | 2014 | Königswinter |
Additional services
Reference customers
Quality & Certification
Quality assurance is laboratory-based and includes, among other things, activity tests on the synthesis gas test bench with FT-IR analytics, elemental analysis (XRF-EDX) as well as BET surface and pore characterization. The company is certified to ISO 9001, ISO 14001 and ISO 45001 and manages the transition from development to production via a quality management system.
| Evidence | Königswinter |
|---|---|
| ISO 9001:2015 | |
| ISO 14001:2015 | |
| ISO 45001:2023 |
Company History
- 2002
Founded as a 100 percent subsidiary of BAUMOT GROUP AG; establishment of a product range for passenger car three-way catalysts
- 2003
Development of a catalytic burner
- 2007
Establishment of various manufacturing processes for the catalytic coating of soot particulate filters for diesel engines
- 2009/2010
Establishment of a manufacturing process for coating complex substrate structures, especially SCR
- 2013
Expansion of production capacities for DPF coating for OEM Off-Road Stage 3b; market entry with ozone and hydrogen peroxide catalysts by winning a world leader in packaging and insulation technology
- 2014
Establishment of a second production line for recombination catalysts; start of series production of SCR catalysts for trucks in the spare parts market
- 2015
Start of series production of diesel particulate filters for OEM Off-Road Stage 4; establishment of a washcoat production line for NOx removal from flue gases in large industrial plants