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Catalytic Performance of Alumina for NOx Control in Diesel Exhaust
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Abstract
The catalytic performance of alumina for NOx control from the exhaust of a diesel engine was investigated.
Although a slight decrease in catalytic activity was observed at the initial stage of the catalyst evaluation, more than 70% of NOx conversion was obtained at 400 °C and a space velocity of 10000 1/h for more than 2000 hours by using a honeycomb type alumina catalyst and methanol as the reducing agent.
The experimental results using synthesized exhaust gases containing SO2 and characteristic of alumina revealed that the initial catalytic deactivation is ascribed to the accumulation of sulfur on the surface of the alumina.
We have also succeeded in improving the de-NOx performance of alumina, and more than 90% of NOx conversion can be obtained.
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Authors
- Hiroshi Tsuchida - COSMO Oil
- Mitsunori Tabata - COSMO Oil
- Katsumi Miyamoto - COSMO Oil
- Tomohiro Yoshinari - COSMO Oil
- Hatsutaro Yamazaki - COSMO Oil
- Hideaki Hamada - National Institute of Materials and Chemical Research
- Yoshiaki Kintaichi - National Institute of Materials and Chemical Research
- Motoi Sasaki - National Institute of Materials and Chemical Research
- Takehiko Ito - National Institute of Materials and Chemical Research
- Tadao Nakatsuji - Sakai Chemical
- Masafumi Yoshimoto - Sakai Chemical
Citation
Tsuchida, H., Tabata, M., Miyamoto, K., Yoshinari, T. et al., "Catalytic Performance of Alumina for NOx Control in Diesel Exhaust," SAE Technical Paper 940242, 1994, https://doi.org/10.4271/940242.Also In
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