The Global Off-Gas Treatment Catalyst Market was valued at an estimated US$ 2.8 Billion in 2023 and is projected to reach US$ 4.1 Billion by 2030, growing at a Compound Annual Growth Rate (CAGR) of approximately 5.5% during the forecast period (2024–2030). This sustained growth is being driven by increasingly stringent global environmental regulations, rising industrial production, and the critical need for effective air pollution control technologies across sectors like chemicals, power generation, and transportation.

As industries worldwide face mounting pressure to reduce emissions of volatile organic compounds (VOCs), nitrogen oxides (NOx), sulfur oxides (SOx), and other hazardous air pollutants, the demand for high-performance catalytic solutions is at an all-time high. In this blog, we profile the Top 10 Companies in the Off-Gas Treatment Catalyst Industry—specialty chemical firms, major refiners, and environmental technology leaders that are setting the standard for cleaner industrial operations.

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🔟 1. BASF SE

Headquarters: Ludwigshafen, Germany
Key Offering: EnviCat® catalysts, OxyMax® catalysts, and custom catalyst solutions

BASF is a global leader in catalyst technology, providing a comprehensive portfolio of off-gas treatment solutions for a wide range of industrial applications. Their catalysts are engineered for high activity, selectivity, and durability in removing pollutants like NOx, CO, and VOCs from exhaust streams in chemical plants, refineries, and power stations.

Key Innovations & Focus Areas:

• Advanced catalyst formulations for low-temperature operation and high sulfur tolerance
• Development of catalytic systems for Carbon Capture and Utilization (CCU) applications
• Digital tools for catalyst lifecycle management and optimization

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9️⃣ 2. Johnson Matthey

Headquarters: London, United Kingdom
Key Offering: Selective Catalytic Reduction (SCR) catalysts, VOC abatement catalysts, catalytic oxidizers

Johnson Matthey is a world-leading sustainable technologies company with a long history of innovation in catalysis. Their off-gas treatment catalysts are critical components in systems designed to meet the most demanding environmental standards, particularly in the chemical, pharmaceutical, and stationary power sectors.

Key Innovations & Focus Areas:

• Pioneering SCR catalyst technologies for efficient NOx reduction
• Specialized catalysts for the abatement of chlorinated VOCs and dioxins
• Focus on circular economy principles, including catalyst recycling and precious metal recovery

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8️⃣ 3. Clariant AG

Headquarters: Muttenz, Switzerland
Key Offering: SynDane® catalysts, Houdry® catalysts, custom catalyst supports

Clariant’s Catalysts business unit is a key innovator in emission control technologies. They offer tailored catalyst solutions for complex off-gas streams, with a strong focus on the petrochemical and specialty chemical industries where precise pollutant removal is essential for both compliance and operational safety.

Key Innovations & Focus Areas:

• High-efficiency catalysts for nitrous oxide (N2O) abatement in nitric acid plants
• Advanced catalyst supports that enhance performance and extend service life
• R&D into catalysts for emerging pollutants and green chemistry applications

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7️⃣ 4. Topsoe A/S

Headquarters: Kongens Lyngby, Denmark
Key Offering: DENOX catalysts, sulfur recovery catalysts, CO oxidation catalysts

Topsoe is a renowned specialist in high-performance catalysis and process technology for the refining and chemical industries. Their off-gas treatment solutions are integral to helping clients achieve sustainability targets, with a particular strength in scrubbing sulfur compounds and converting NOx into harmless nitrogen and water.

Key Innovations & Focus Areas:

• Industry-leading catalysts for Claus process sulfur recovery units
• Modular SCR and CO oxidation systems for flexible implementation
• Active partnerships with industry to develop next-generation decarbonization technologies

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6️⃣ 5. Umicore

Headquarters: Brussels, Belgium
Key Offering: Precious metal-based catalysts, automotive and industrial emission control systems

Umicore leverages its deep expertise in precious metals and materials technology to produce highly effective catalysts for off-gas purification. Their solutions are widely used in applications requiring robust performance under challenging conditions, such as in the glass manufacturing and electronics industries.

Key Innovations & Focus Areas:

• Precious metal catalysts for high-efficiency oxidation of VOCs and CO
• Closed-loop material cycle for platinum group metals (PGMs)
• Development of catalysts suitable for hybrid and electrified industrial processes

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5️⃣ 6. Shell Catalysts & Technologies

Headquarters: Houston, Texas, USA
Key Offering: CRI/Criterion catalysts, sulfur catalysts, hydrogenation catalysts

As part of the energy major Shell, Shell Catalysts & Technologies provides advanced catalyst solutions that are critical for cleaning process gases in refineries and chemical plants. Their technologies help customers improve efficiency, reduce energy consumption, and achieve regulatory compliance for sulfur and nitrogen emissions.

Key Innovations & Focus Areas:

• Catalysts for deep desulfurization of refinery off-gases and fuels
• Integrated technical services for catalyst loading, activation, and troubleshooting
• Focus on technologies that enable the production of cleaner fuels and chemicals

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4️⃣ 7. ExxonMobil Catalysts and Licensing LLC

Headquarters: Houston, Texas, USA
Key Offering: Fluid Catalytic Cracking (FCC) catalysts, hydroprocessing catalysts, emission control additives

ExxonMobil is a major force in catalysis, with technologies that are fundamental to modern refining. Their catalysts not only enhance process efficiency but also play a direct role in reducing the environmental footprint of refinery operations by minimizing the generation of SOx and NOx in off-gas streams.

Key Innovations & Focus Areas:

• FCC catalysts designed to reduce sulfur in gasoline (SUPER SOX Reduction additives)
• R&D focused on improving catalyst selectivity to minimize unwanted byproduct formation
• Licensing of proprietary processes that integrate emission control at the source

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3️⃣ 8. Nippon Shokubai Co., Ltd.

Headquarters: Osaka, Japan
Key Offering: VOC removal catalysts, deodorizing catalysts, ammonia decomposition catalysts

Nippon Shokubai is a leading Japanese chemical company with a strong focus on functional chemicals and catalysts. They are particularly known for their innovative catalysts aimed at odor control and VOC abatement, serving a diverse clientele from wastewater treatment plants to electronics manufacturing facilities.

Key Innovations & Focus Areas:

• High-performance catalysts for low-concentration VOC removal at ambient temperatures
• Specialized catalysts for treating malodorous compounds like ammonia and hydrogen sulfide
• Expansion of catalyst applications in the growing Asian environmental protection market

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2️⃣ 9. Heraeus Precious Metals

Headquarters: Hanau, Germany
Key Offering: Precious metal gauze catalysts, custom PGM-based catalyst systems

Heraeus is a global technology group with a leading position in precious metals. Their catalyst division produces highly efficient oxidation catalysts, often in gauze or structured forms, which are essential for processes like ammonia oxidation in nitric acid production and the removal of pollutants from industrial exhausts.

Key Innovations & Focus Areas:

• Platinum-rhodium gauzes for high-temperature ammonia oxidation with high yield and low N2O formation
• Catalyst recovery and refining services to ensure a sustainable supply of precious metals
• Development of structured catalysts for improved mass transfer and lower pressure drop

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1️⃣ 10. Sinocat Environmental Technology Co., Ltd.

Headquarters: Beijing, China
Key Offering: SCR catalysts for stationary sources, VOC oxidation catalysts, catalyst regeneration services

Sinocat is a prominent and fast-growing Chinese player specializing in environmental catalyst technologies. The company has gained significant market share by providing cost-effective and reliable SCR and VOC abatement solutions to meet China’s rigorous air quality standards, with increasing exports to international markets.

Key Innovations & Focus Areas:

• Cost-competitive SCR catalysts tailored for coal-fired power plants and industrial boilers
• Integrated services including catalyst design, system engineering, and on-site regeneration
• Strong focus on R&D to develop catalysts resistant to poisoning from complex flue gas components

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🌍 Outlook: The Future of Off-Gas Treatment is Smarter and More Integrated

The off-gas treatment catalyst market is evolving beyond mere compliance. The industry is moving towards integrated, intelligent systems that not only remove pollutants but also contribute to energy efficiency, carbon management, and the circular economy. The shift towards renewable energy and green hydrogen production is also creating new frontiers for catalytic technology.

📈 Key Trends Shaping the Market:

• Stringent global emission standards (e.g., Euro 7, China’s 14th Five-Year Plan) driving adoption of advanced catalyst systems
• Growing demand for catalysts capable of handling complex and variable waste streams from new manufacturing processes
• Integration of digital monitoring and predictive analytics for optimized catalyst performance and reduced downtime
• Increased focus on developing non-precious metal catalysts to reduce costs and dependency on critical raw materials

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The companies profiled above are at the forefront of this transformation, providing the essential technologies that enable industries to operate more cleanly and sustainably. Their continued innovation is critical to achieving global environmental goals and ensuring a healthier planet.