three-way catalyst Articles

  • Three-Way Catalysts for Talisman Energy

    Description Natural gas compressor station in northern Alberta, Canada, powered by Waukesha 7042 GSI engines. Challenge The challenge was to meet emission targets for NOx, CO and non-methane hydrocarbons, for a variety of compressor engines with different exhaust configurations. Solution DCL supplied the catalyst housings in two basic configurations for this project. ...


    By DCL International Inc.

  • The benzene problem: impact of three-way catalyst technology: potential for further improvement

    Chemical ionisation mass spectrometry (CI-MS) was applied to study the benzene emission characteristics of a TWC-vehicle at a time resolution of one Hertz. Three important operating conditions with increased emissions were identified: at vehicle start; at extended stop-and-go situations; and whenever a catalyst-induced benzene formation occurs. The cold start influence was detectable for about ...


    By Inderscience Publishers

  • How a contract research lab advanced its polymer characterization capabilities

    Realizing the Advantages of Ultra-High-Performance Size Exclusion Chromatography Compared to GPC Intertek is a global provider of quality and safety services designed to help businesses improve products, assets and processes, overcome market constraints and reduce risks. From auditing and inspection, to testing, training, and certification, Intertek enables customers to meet end ...


    By Waters Corporation

  • Performance Study of 48 Road-Aged Commercial Three Way Catalytic Converters

    Abstract  48 commercial three-way catalytic converters (TWC) aged on-road were investigated. The results show that there was no significant impact of aging on light off temperatures for CO, HC, and NO up to 120 000 km. Above 120 000 km, the light off temperatures in general increased. The steady state conversions for CO and HC are not significantly affected by aging. However, the steady state ...


  • Advanced Threeway Catalysts

    One area of catalyst system design which has received relatively little attention is the method of application of precious metal, specifically with regard to its positioning in the catalyst. Recent advances in catalyst coating technology have enabled both washcoat and precious metals to be distributed inhomogeneously (zoned) along the length of a catalyst monolith. With the option of zone coating ...

  • Putting a Lid on Catalyst Issues

    While it is a given that emissions control technology must first and foremost remove harmful constituents from the engine exhaust gas stream, it is equally true that they must also be able to operate in the real world, where durability, reliability and serviceability are critical. It was with those facts in mind that DCL International Inc., the Concord, Ontario, Canada, supplier of advanced ...


    By DCL International Inc.

  • Regeneration of Palladium Catalyst for Methane Abatement

    Abstract: The exhaust gas of lean burn gas engines contains significant amounts of unburnt methane gas. ...


    By DCL International Inc.

  • Oxidation Catalysts for Co-Generation Plant

    Description Manuli Film, Naples, Italy, with three (3) Rolls Royce KVGS-18G2, lean burn, natural gas engines, each 3030 kW electrical. Thermal power is utilized both from exhaust gas and cooling water for plastic film production. Challenge Required to meet emission standard of 400 mg/Nm3 @ 5% O2 for carbon monoxide and 150 mg/Nm3 @ 5% O2 non-methane hydrocarbons. Solution ...


    By DCL International Inc.

  • Criterion catalyst co. case study

    Criterion is the world's largest supplier of catalysis for hydroprocessing, including hydrotreating applications.  The company is also a leading supplier of reforming and specialty catalysis for the refining industry. Criterion's facility in Azusa, CA installed a Tri-NOx Mult-Chem scrubber with a 3000 cfm capacity at 250 lbs/hr of NOx. The system has four polypropylene columns, three of ...

  • DCL Catalyst Meets Stringent California Regulations

    Enticed by a grant offered by the state of California’s Energy Commission, Tideland Oil Production Co. of Southern California ...


    By DCL International Inc.

  • The Effect of Phosphorus and Boron Lubricant Oil Additives on Catalyst Durability

    With ever-tightening legislation driving down emissions limits, minimisation of catalyst deactivation is very important. Attention has now focused on chemical poisoning of three-way catalysts (TWC) by elements commonly found in engine oil. ...

  • Optimizing Catalyst Performance Aids in Lowering Operational & Management Costs

    Catalyst costs can be more than $2 million per layer, and customers are seeking ways to better manage their budget while maintaining catalyst performance. Fuel Tech's TIFI® Targeted In-Furnace Injection™ programs aid in the optimization of catalyst performance by managing slag, fouling, and ABS.  Minimizing the negative impacts of poor combustion while optimizing gas flow paths. ...


    By Fuel Tech, Inc.

  • The internal entrepreneur as a catalyst to successful product development: a case study

    Product development is an essential part of the total innovation process. This paper describes some of the elements that are indispensable for successful product development. The advancement of the circuit breaker, a product that is used to make or break the flow of electrical current, is analysed over a period of almost 30 years. During this time, it becomes clear that continuous improvement in ...


    By Inderscience Publishers

  • ENVIRONMENT CANADA AFC FUEL CATALYSTS URBAN BUS EVALUATION

    In 1996 Chassis Dynamometer testing was conducted and concluded on three Detroit Diesel 6v92 diesel engine powered urban buses by Environment Canada, Mobile Sources Emissions Division in Ottawa Ontario, Canada. This is the ...


    By AXI International

  • Recovery of Precious Metal Catalysts - A New Process Using Supercritical Water Oxidation

    Up to now, the recovery of precious metals used as catalysts in chemical processes has involved the use of incineration. Now, however, a British-Swedish joint venture has developed a process which uses supercritical water oxidation instead, which provides many economic and environmental advantages. Precious metals are used extensively in catalysts in a wide range of industrial chemical processes. ...

  • Environment Canada AFC Fuel Catalyst Urban Bus Evaluation

    In 1996 Chassis Dynamometer testing was conducted and concluded on three Detroit Diesel 6v92 diesel engine powered urban buses by Environment Canada, Mobile Sources Emissions Division in Ottawa Ontario, Canada. A series of New York City Composites (NYCC) and Central Business District (CBD) cycles were conducted on each bus at zero hours, 400 hours and 1000 hours of normal in service operation in ...


    By AXI International

  • Kinetics of xylose in hydrolysate using dilute sulphuric acid as catalyst

    In the technology of manufacturing fuel alcohol from biomass as feedstock, hydrolysis using dilute acid as catalyst is one way to produce fermentable saccharide. In this process, the yield of xylose is always low because of the degrading during the acid environment. In this paper, the degrading kinetics of xylose in the hydrolysate was investigated under the conventional process conditions of the ...


    By Inderscience Publishers

  • Recovery of nickel from spent catalyst by single- and multi-stage leaching process

    Nickel-supported catalyst is used in petroleum, fertiliser and iron industries. This research studied the possibility of recovering nickel by leaching the ground catalyst with sulphuric acid. The leaching was done in single stage and multi-stages. The results obtained in single-stage leaching showed that the percentage recovery of nickel increased with increasing acid concentration used up to 25% ...


    By Inderscience Publishers

  • Activated carbon cloth: a potential adsorbing/oxidizing catalyst for phenolic wastewater

    An investigation into the use of activated carbon cloth (ACC) as a potential adsorbent and/or catalyst for oxidation processes is reported. The extent of increase/decrease of oxidation/adsorption of phenol, as measured by total organic carbon content (%), is explained by considering the effects of the oxidants such as ozone and hydrogen peroxide on the activated carbon cloth. Results also show ...


    By IWA Publishing

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