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Sulfur Storage and Discharge Behavior on Flow-Through Type Oxidation Catalysts
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Abstract
Sulfur storage/discharge behavior on a flow-through type oxidation catalyst (FTC) was investigated by engine dynamometer tests and laboratory tests, and the following results were obtained.
In FTC wherein active Al2O3 was used as a substrate for supporting catalytic components, sulfur was stored in the form of aluminum sulfate in high temperature region while sulfate were adsorbed or adhered to the catalyst surface layer to be stored thereon in low temperature region.
Although aluminum sulfate formed in high temperature region was relatively stable, sulfate stored in low temperature region were desorbed easily when the temperature rose.
Therefore, it was attempted to optimize the substrate deposited catalytic components. And, FTC which would inhibit adsorption of sulfate was achieved successfully.
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Authors
Citation
Horiuchi, M., Saito, K., and Ichihara, S., "Sulfur Storage and Discharge Behavior on Flow-Through Type Oxidation Catalysts," SAE Technical Paper 910605, 1991, https://doi.org/10.4271/910605.Also In
References
- Horiuchi M. Saito K. Ichihara S. “The Effects of Flow-through Type Oxidation Catalysts on the Particulate Reduction of 1990's Diesel Engines” SAE Paper 900600
- Taylor K.C. “Sulfur Storage on Automotive Catalysts” Ind. Eng. Chem.,Prod. Res. Dev. 15 4 264 268
- Chang C.C. “Infrared Studies of SO 2 on - Alumina” Journal of Catalysis 53 374 385 1978
- Ball D. J. Stack R. G. “Catalyst Considerations for Diesel Converters” SAE Paper 902110
- Zelenka P. Ostgathe K. Lox E. “Reduction of Diesel Exhaust Emissions by Using Oxidation Catalysts” SAE Paper 902111
- Saito K. Ichihara S. Ikeda Y. “Fuel and Lubricant Effect on Durability of Catalytic Oxidizer (CTO) for Heavy Duty Diesel Engines” SAE Paper 880010