Download Catalysis and automotive pollution control IV: proceedings by N. Kruse, A. Frennet, J.-M. Bastin PDF

By N. Kruse, A. Frennet, J.-M. Bastin

Inspite of the power crises and the recession, there was an international, explosive development within the volume of motorcars. some time past 50 years, the quantity has elevated from 50 to seven hundred million automobiles. For cost effective purposes they're going to most likely remain used for quite a lot of years, regardless of the negative yield of inner combustion engines leading to the inevitable construction of a few gaseous toxins. the following elevate of gaseous toxins in our surroundings brought on by exhaust fuel from vehicles has more desirable the matter of the removal of those pollution produced through inner combustion engines. Catalysis has confirmed to be the simplest method to decrease the content material of exhaust gasoline in pollutants.

As its predecessors, CAPoC4 proved to be an appropriate platform for discussing technological advancements and advancements in addition to destiny views and demanding situations. within the mild of recent effects and additional legislative laws, the subsequent subject matters have been intensely mentioned: *low light-off behaviour in accordance with enhanced catalysts and substrate formulations *efficient adsorber platforms for garage of hydrocarbon emissions *electrically heated catalyst platforms forward the most catalyst or, however, shut coupled catalysts (at the manifold of the engine) • lean DeNOx catalysts bearing in mind decomposition of NOx within the oxygen-rich exhaust of direct injection gas engines and excessive velocity injection diesel engines or, however, NOx trapping/reduction in a hybrid method * assortment and destruction of dry particulates or soot.

There is not any doubt that fresh motor vehicle know-how is an important a part of enhancing air caliber. demanding situations stay and speak to for technological solutions. Catalytic pollution keep an eye on continues to be a space delivering a substantial incentive for leading edge paintings.

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Extra resources for Catalysis and automotive pollution control IV: proceedings of the Fourth International Symposium (CAPoC4), Brussels, Belgium, April 9-11, 1997

Sample text

Research and development are now concentrating on widening the operating temperature "window" at which this conversion can be achieved and improving the thermal durability of the catalyst systems. Further promising developments for gasoline engines involve the incorporation of a NOx trap to adsorb and store NOx under lean conditions. The stored NOx is then released during a transient excursion to rich conditions and using a 3 way catalyst to destroy the NOx. Efficiencies approaching 90% have been demonstrated in the laboratory.

2. The first car company to contract to source its supply of catalysts for the US market was a European company, who also introduced the first "closed loop" 3 way catalytic converter in 1978 using advanced European emission control technology. 3. Platimma/Rhodium catalysts were first used on European cars to reduce NOx emissions for the US 1975 emissions regulations, using "open loop" three way catalysis. 4. The technology to produce thin walled extruded ceramic substrates was first developed by a European company.

PGM Autocatalysts - The Spread of Global Emission Standards and their Impact on Autocatalyst Demand", R A Searles, Platinum Group Metals, IPMI, September 1995. 2. Official Journal, C77, Vol. 40, 11 March 1997. 3. European Commission Communication, COM (96), Final. 4. SAE 950259. 5. "Low Emission Vehicle and Zero-emisslon Vehicle Review", Mobile Source Division, Air Resources Board, California Environmental Protection Agency, November 1996. 6. E. 506/Final 7. Bundesministerium fiir Verkehr, Kraftfahrzeugsteur~inderungsgesetz 1997, 14 March 1997.

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