Browse Publications Technical Papers 2001-01-0660
2001-03-05

Development of the Automotive Exhaust Hydrocarbon Adsorbent 2001-01-0660

The hydrocarbon adsorption volume character of zeolite was studied. Specifically, the relationship between aluminum content and zeolite hydrocarbon adsorption was investigated, as a potential hydrocarbon adsorbent for exhaust gas. The study also analyzed the relationship between hole diameter and zeolite hydrocarbon adsorption. It was found that hydrocarbon adsorption increased with decreasing aluminum content. Zeolite with a pore size approximately 0.1nm greater than the diameter of hydrocarbon molecules showed the best performance. Zeolites with two different pore sizes were mixed, and succeeded in adsorbing hydrocarbons of carbon number 3 and above. Silver (Ag) ion exchanged zeolite was also used to increase the adsorption of exhaust gas hydrocarbons, including those of carbon number 2.

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