Current Developments in Catalyst of Automobile Exhaust Treatment and Scope of Photolytic Catalyst Technology: A comprehensive review

Air pollution is at hazards level in the environment worldwide. Air pollution created by both industry and automobiles are increases very rapidly in world. Industrial pollution away from the city but more effect on the fertilize land. Automobile emitted pollutants inside the city are more dangerous for human life. HC, CO and NOx gives adverse effect on human health. Hence, pollution control boards makes stringent pollution control norms time to time. HC and CO are the polluting emittens can easily control by oxidising catalysts and advanced combustion technologies. But NOx reduction needs expensive reducing catalyst. Main source of NOx is diesel engines or petrol engine with lean combustion, where three way catalyst is required to control the all pollutant emissions including NOx. Hence, NOx reduction is challanging task Technologies to control various emittance from automobile are reviewed with scope of photolytic catalyst technology to control NOx in photolytic catalytic convertor