HENTEKCAT’s Gas Catalyst division delivers high-performance catalytic solutions for gas purification, emission control, and process gas treatment across industrial, aerospace, and environmental applications. Our portfolio spans ozone abatement, carbon monoxide oxidation, hydrogen peroxide decomposition, oxygen removal, and selective hydrogenation – each engineered for reliability, efficiency, and cost-effectiveness.
Ozone is a powerful oxidant used in water treatment and air purification, but residual ozone is a hazardous air pollutant requiring abatement. Manganese dioxide (MnO₂) based catalysts are recognized as highly efficient materials for ozone decomposition at room temperature. Our ozone decomposition catalysts utilize advanced MnO₂ formulations with enhanced oxygen vacancy concentrations for efficient ozone removal, even under challenging conditions. α-MnO₂ monolithic catalysts demonstrate ozone conversion rates exceeding 99% during extended operation. For high-humidity environments, silver-modified ε-MnO₂ and dual-modified formulations maintain activity through enhanced oxygen vacancy regeneration.
Applications: Industrial off-gas treatment, water treatment plant off-gas, HVAC systems, aerospace cabin air purification, office equipment emissions.
Aluminum honeycomb ozone removal filters combine a lightweight, high-open-area aluminum honeycomb substrate with a MnO₂ catalytic coating. The honeycomb structure provides ultra-low pressure drop, excellent mechanical strength, and rapid thermal response. With a MnO₂ coating of approximately 50 µm thickness, the filter achieves ozone conversion at room temperature under ambient conditions. The catalyst decomposes ozone to oxygen at room temperature without requiring additional energy. Modified aluminum honeycomb has been described as a catalytic substrate useful in catalytic converters which remove pollutants from exhaust.
Applications: Aircraft cabin air systems, HVAC ventilation, air purifiers, office equipment (copiers, printers), wastewater treatment off-gas.
Copper mesh carriers offer exceptional thermal conductivity, mechanical flexibility, and inherent catalytic properties for ozone decomposition. Copper serves as a catalyst to break down ozone, with oxygen radicals on the copper surface recombining to form O₂. Our copper mesh ozone removal filters support high-efficiency ozone decomposition catalysts that decompose ozone into oxygen at room temperature. Monolithic Cu₂O-CuO/Cu mesh catalysts maintain 98% conversion for extended periods at ambient ozone concentrations. The flexible mesh format allows on-site cutting and fitting to irregular duct geometries.
Applications: Retrofitted HVAC systems, industrial ducts with irregular geometries, precision electronic equipment protection, ozone analysis equipment (zero gas generation).
Hopcalite is a mixed copper-manganese oxide catalyst (CuMnOx) that has served as the industry standard for ambient-temperature carbon monoxide oxidation for over 80 years. The synergy between copper and manganese oxides creates a redox system that enables continuous oxygen transfer and CO adsorption. Hopcalite is known to be an easily available and highly active catalyst for low-temperature (25°C) CO oxidation. Cerium-modified hopcalite formulations increase CO conversion by 50% at room temperature. The CuMnOx catalyst is a good candidate for CO oxidation owing to advantages such as low cost and good catalytic activity at low temperature.
Applications: Respiratory protection (firefighter escape masks, mine rescue equipment, military gas masks), compressed breathing air purification, industrial off-gas treatment.
Hopcalite powder is the fine particulate form of copper-manganese mixed oxide catalyst, serving as the precursor or active component for formed catalysts (pellets, granules, honeycomb coatings). Carulite® is a trademarked series of mixed copper-manganese oxide (hopcalite-type) catalysts, primarily composed of manganese dioxide (MnO₂) and copper oxide (CuO). The presence of mixed copper and manganese oxide phases is essential for catalytic activity. Hopcalite catalysts with high catalytic activity in CO oxidation under humid conditions can be obtained via flame spray pyrolysis. The powder form enables flexible integration into various catalyst bed configurations and coating applications.
Applications: Catalyst bed packing for respiratory canisters, catalytic filter coatings, industrial gas purification systems, chemical synthesis.
Ceramic honeycomb CO removal catalysts utilize cordierite or metallic monoliths coated with hopcalite or precious metal active phases. High-performance catalysts achieve CO conversion efficiency exceeding 99% at significantly lower temperatures than alternative off-gas purification methods. The honeycomb geometry provides high geometric surface area, ultra-low pressure drop, and excellent thermal shock resistance. Honeycomb catalysts with 233 cpsi cell density demonstrate the highest CO conversion rates. Catalytic converters consist of an open-channel ceramic monolith or metallic honeycomb substrate that provides support to the catalyst.
Applications: Industrial flue gas treatment, compressed breathing air systems, office equipment emissions, automotive and engine exhaust.
Platinum and palladium based catalysts represent the gold standard for CO oxidation due to their exceptional activity, thermal stability, and resistance to humid environments. The most active species for CO oxidation are dispersed Ptn⁺ and Pdn⁺ cations and PdOx species decorating alumina crystal defects. Bimetallic Pd-Pt clusters are formed in co-impregnated catalysts, with activity varying non-linearly with Pd:Pt ratio. These catalysts maintain >99% CO conversion across a wide operating window with extended service lives. The catalyst for purifying carbon monoxide includes Pt and Pd loaded on an alumina support.
Applications: Automotive exhaust (cold-start emissions), industrial flue gas, compressed breathing air, fuel cell feed gas purification (PROX), enclosed space air purification.
Hydrogen peroxide (H₂O₂) decomposition catalysts accelerate the breakdown of H₂O₂ into water and oxygen – a reaction that occurs naturally but very slowly without catalysis. Platinum nanocatalysts control the energy yield of several energy conversion technologies, such as hydrogen fuel cells. The catalytic decomposition of H₂O₂ can be enhanced with catalysts, producing energy for space missions while ensuring stability. Mullite oxide YMn₂O₅ enables rapid decomposition at room temperature (25°C) without consuming excessive energy. Catalytic reactors with added Pb achieve decomposition efficiency of 97.2%. Catalysts work by lowering the activation energy of the decomposition reaction without being consumed.
Applications: Rocket propulsion systems (green propellant), medical sterilization equipment, industrial wastewater treatment, chemical processing, hydrogen fuel cells.
Copper(II) oxide (CuO) based catalysts are the industry standard for adsorptive removal of trace oxygen from industrial gas streams. Under reducing conditions, CuO reacts with oxygen to form stable copper-containing compounds, effectively scavenging O₂ from the gas stream. The catalyst operates across a broad temperature range – from ambient conditions up to 230°C. CuO–CeO₂/Al₂O₃ systems achieve oxygen removal capacity of 3000 ml O₂ per gram of catalyst with extended service lifetimes. The catalyst is effective for inert gas purification, hydrogen purification, and syngas purification.
Applications: Inert gas purification (N₂, Ar, He, Kr, Xe), hydrogen purification, syngas purification for Fischer-Tropsch synthesis, glove box atmosphere maintenance, semiconductor manufacturing.
Palladium supported on alumina is one of the most versatile heterogeneous catalysts in industrial catalysis. High specific surface area (150-300 m²/g) and thermal stability to 800°C enable excellent Pd dispersion. CO adsorption studies over Pd/Al₂O₃ catalysts show that the most active species as oxidant for CO are dispersed Pdn⁺ cations and PdOx species decorating the defects of alumina crystals. Pd/Al₂O₃ serves as the industry standard for selective hydrogenation and VOC abatement. The catalyst for purifying carbon monoxide includes Pt and Pd loaded on the alumina support.
Applications: Hydrogen purification (deoxygenation), VOC abatement, selective hydrogenation (acetylene, butadiene, nitriles), methane oxidation (natural gas engines), total hydrocarbon oxidation (gas turbine exhaust).
– Comprehensive portfolio – Ozone abatement, CO oxidation, H₂O₂ decomposition, oxygen removal, and selective hydrogenation catalysts
– Proven performance – Ozone conversion >99% (α-MnO₂), CO conversion >99% (ceramic honeycomb/Pt-Pd), H₂O₂ decomposition >97%
– Application-specific engineering – Tailored to your gas composition, flow rate, temperature, and purity requirements
– Vertically integrated – In-house formulation, manufacturing, and quality control
– Global support – Engineering and technical support across North America, Europe, and Asia
HENTEKCAT Gas Catalyst – Advanced Materials for Cleaner Air and Purer Gases.
