Phosphorous Aging Model

Praveen  Chavannavar, Caterpillar Inc.

Description of model to predict aging of catalysts due to exposure to phosphorous. The phosphorous aging model is applicable to flow through catalysts such as DOCs and SCRs.

The model itself can be divided into two sections: one to predict the phosphorous distribution within the catalyst, and another to predict the impact of this phosphorous on the catalyst performance. Results include validation with available existing data from field aged catalysts as well as engine and bench aged samples.

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