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Enhanced CO resista...
Enhanced CO resistance of Pd/SSZ-13 for passive NOx adsorption
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- Yao, Dawei, 1991 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Ho, Hoang Phuoc, 1983 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Feizie Ilmasani, Rojin, 1989 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Wurzenberger, Johann C. (author)
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Glatz, Thomas (author)
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- Creaser, Derek, 1966 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Olsson, Louise, 1974 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- Elsevier BV, 2023
- 2023
- English.
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In: Chemical Engineering Journal. - : Elsevier BV. - 1385-8947. ; 460
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https://research.cha... (primary) (free)
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Passive NOx adsorption (PNA) is a novel technology to control NOx emissions during cold start. However, the recent generation of PNA material, Pd/zeolite, suffers from major degradation under high CO concentrations. In this work, we developed a novel form of Pd/SSZ-13 by using a freeze-drying process after incipient wetness impregnation. This Pd/SSZ-13 showed a better stability than the sample synthesized by the common process. Several characterization measurements were conducted and it was found that the Pd sites on the freeze-dried sample were more resistant towards CO-induced agglomeration. By combing in-situ characterization and kinetic modeling, we found that the freeze-dried Pd/SSZ-13 had more ion-exchanged Pd sites, which provided greater resistance towards the CO-induced Ostwald ripening process, and consequently suppressed the sintering behavior under a high CO concentration. This material offers a potentially improved stability of PNAs under extremely high CO concentration pulses from incomplete diesel combustion during engine cold start.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Kemiska processer (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Chemical Process Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Annan kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Other Chemical Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
Keyword
- Ostwald ripening
- Passive NOx adsorption
- Pd sintering
- CO tolerance
- Kinetic model
Publication and Content Type
- art (subject category)
- ref (subject category)
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Yao, Dawei, 1991
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Ho, Hoang Phuoc, ...
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Feizie Ilmasani, ...
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Wurzenberger, Jo ...
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Glatz, Thomas
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Creaser, Derek, ...
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show more...
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Olsson, Louise, ...
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show less...
- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Chemical Enginee ...
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and Chemical Process ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Chemical Enginee ...
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and Other Chemical E ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
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and Other Materials ...
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Chemical Enginee ...
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Chalmers University of Technology