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Diesel particulate filter

Mobile emission controls: a diesel particulate filter (DPF) removes particulate matter from diesel exhaust by physical filtration.

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NOx storage catalyst (NSC)

Mobile emission controls: Johnson Matthey’s NSC technology removes NOX from a lean gas stream and converts it to N2.

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Three-way catalyst

Mobile emission controls: three-way catalysts for cars, vans, light trucks and motorcycles.

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MODULEX and DUALOX catalytic converters and converter-silencers

Stationary emissions control: Johnson Matthey's MODULEX and DUALOX® catalytic converters for stationary engines were developed to satisfy the increasing demand for clean air technology combined with silencing.

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Three Way Filter (TWF®)

Mobile emission controls: Johnson Matthey's Three Way Filter (TWF®) technology can reduce particle numbers by up to 99%.

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Selective Catalytic Reduction Filter® (SCRF®)

Mobile emission controls: the SCRF® system integrates Selective Catalytic Reduction (SCR) with a soot filter – the next step for diesel nitrogen oxide control.

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Selective catalytic reduction (SCR)

Mobile emission controls: selective catalytic reduction (SCR) systems work by chemically reducing nitrogen oxide to nitrogen.

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Diesel oxidation catalyst (DOC)

Mobile emission controls: many diesel particulate filter (DPF) systems incorporate an oxidation catalyst, either as a coating on the filter or as a separate element.

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SCRT system technology

Mobile emission controls: the SCRT® system is more than simply a combination of a CRT® system and an SCR system.

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Purification by catalytic oxidation

Our PURAVOC™ technology provides a catalytic oxidation solution to remove a broad variety of volatile organic compounds (VOCs), oxygen, hydrogen and carbon monoxide from various gas stream sources.

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