Dissertation
Modeling and analysis of performance on a field-aged Fe-zeolite catalyst
Doctor of Philosophy (Ph.D.), Drexel University
Jul 2014
DOI:
https://doi.org/10.17918/etd-6045
Abstract
In this study a 1-dimensional computational model implementing conservation of mass, species and energy for both the gas phase and catalyst surface has been developed to predict the performance of an Fe-Zeolite selective catalytic reduction catalyst. This work investigates and analyzes the behavior of a fresh Fe-Zeolite catalyst as well as one that has been aged in a Heavy Duty Diesel engine performing in the field for 376k miles. The chemistry and performance for the two Fe-Zeolite configurations for the NH3 Storage, NH3 oxidation, NO Oxidation, Standard, Slow and Fast reactions are correlated and examined against synthetic gas rig test bench data and then subsequently verified with engine laboratory testing. It has been found that the Standard reaction was the most degraded reaction and the Fast reaction was the least affected by aging. As a result, in order to have the field-aged catalyst functioning to its optimized activity, the Fast reaction needs to be activated by keeping the NOx gas feed with a 50 % NO and 50 % NO2 gas composition.
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Details
- Title
- Modeling and analysis of performance on a field-aged Fe-zeolite catalyst
- Creators
- Roxanna Moores - DU
- Contributors
- Nicholas Peter Cernansky (Advisor) - Drexel University (1970-)
- Awarding Institution
- Drexel University
- Degree Awarded
- Doctor of Philosophy (Ph.D.)
- Publisher
- Drexel University; Philadelphia, Pennsylvania
- Resource Type
- Dissertation
- Language
- English
- Academic Unit
- College of Engineering (1970-2026); Mechanical Engineering (and Mechanics) (1970-2026); Drexel University
- Other Identifier
- 6045; 991014632062404721