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

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

Even with the power crises and the recession, there was a world, explosive progress within the quantity of motorcars. long ago 50 years, the quantity has elevated from 50 to seven hundred million autos. For low-priced purposes they'll most likely stay used for quite a few years, regardless of the negative yield of inner combustion engines leading to the inevitable creation of a few gaseous pollution. the following elevate of gaseous pollution in our surroundings as a result of exhaust gasoline from autos has more suitable the matter of the removing of those toxins produced by means of inner combustion engines. Catalysis has confirmed to be the simplest strategy to reduce the content material of exhaust fuel 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 latest effects and additional legislative laws, the next 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 structures forward the most catalyst or, then again, shut coupled catalysts (at the manifold of the engine) • lean DeNOx catalysts making an allowance for decomposition of NOx within the oxygen-rich exhaust of direct injection gas engines and excessive velocity injection diesel engines or, then again, NOx trapping/reduction in a hybrid strategy * assortment and destruction of dry particulates or soot.

There isn't any doubt that fresh automobile know-how is an important a part of bettering air caliber. demanding situations stay and contact for technological solutions. Catalytic pollution keep an eye on remains to be a space supplying a substantial incentive for cutting edge paintings.

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

Sample text

Selective Catalytic Reduction (SCR) This process, originally introduced on stationary engines, is now at the stage of field trials on heavy duty diesel engines. Ammonia is used as a selective reductant, in the presence of excess oxygen, to convert NOx to nitrogen. The ammonia is usually introduced by a controlled injection of a solution of urea in water into the exhaust gas upstream of the special SCR catalyst. 6. Maintenance and Durability of emission performance This is the key to gain the maximum environmental benefit from the application of advanced emission control technology.

Other Papers on Impact of Sulphur: B J Cooper, Platinum Metals Review, 38, (1), 2-10. E S Lox, SAE TOPTEC, Meeting the Legislated Standards, 1993. Beck et al, Applied Catalysis B: Environmental, 3 (1994), 205-227, Elsevier Science BV, Amsterdam. "Ford Position on the Effects of Fuel Sulfur on Advanced Emission Control Technology", Ford Motor Company, March 25 1996. This Page Intentionally Left Blank CATALYSIS AND AUTOMOTIVE POLLUTION CONTROL IV Studies in Surface Science and Catalysis, Vol. 116 N.

With passenger car diesel engines, a remarkable change is currently taking place. After the introduction of the first direct injection diesel en#nes a few years ago, it is obvious that the high speed _direct injection (HSDI) diesel engine is increasingly penetrating the market. It is expected that HSDI diesel driven vehicles will have a share of about 85% of the diesel passenger cars in Europe at the turn of the century. The most challen~ng field in achieving the exhaust emission legislative standards is the NOx and particulates control.

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