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Alimin, Ahmad Jais
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document
Effects of alumina foam coated with stanum (IV) oxide on the emission of gasoline engine
Abstract
Stanum oxide-based materials are known for the catalytic activities on noxious gases. Combination of alumina foam structure and zeolite in filtration, refining and separation of chemical species is seen to increase the capability of such filter. The search for alternative materials are intensifying as the existing catalysts (Platinum Group Metal-PGM) used in honeycomb structure found in typical catalytic converters are prohibitively expensive. This paper reports the effects of stanum (IV) oxide coating on alumina foam as pollutant abatement in gasoline engine. The filter employs polymeric sponge method to obtain porous structure with a composition of 70 vol. % alumina and 30 vol. % of zeolite. The filters are installed on a 1300 cc carburetted engine. Hydrocarbon (HC) and carbon monoxide (CO) emission are measured at several speeds ranging from 1500 rpm to 3500 rpm. The result of the test is compared with a non-filter system. Analysis shows a reduction of both HC and CO emission levels up to 25 % between 1500 rpm to 3500 rpm for alumina foam compared to the non-filter system.