1991-02-01

SOF Reduction and Sulfate Formation Characteristics by Diesel Catalyst 910328

Characteristics of diesel catalyst for particulate reduction were examined.Important points of catalyst application for diesel engine are SOF reduction ability and control of sulfate formation from sulfur in diesel fuel. Diesel catalysts were evaluated to select better catalyst formation and washcoat on substrate.SOF reduction and sulfate formation of each catalyst were examined, and it was recognized maximum SOF reduction was achieved to 80 % or more over and sulfate formation was almost negligible when catalyst formation and washcoat were suitable for diesel application.Washcoat on substrate stored sulfate at low temperature and released at high temperature.Catalyst for diesel application is considered to be promising to reduce particulate as well as HC and CO if control of sulfate formation will be sufficient.

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