The Separate Removal of Trace CO and Moist NO from Off-Gases by Adsorption on H-Type Mordenite
Three kinds of mordenite were examined for the adsorptive separation and removal of trace amounts of 14 CO 2 and moist NO x contained in the off-gases of reprocessing plants for spent nuclear fuels. It was found that protonation of mordenite eliminated any possible removal of CO 2 by specific adsorp...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
1999-04-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/026361749901700403 |
| _version_ | 1826905383985217536 |
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| author | Z.-M. Wang T. Arai M. Kumagai |
| author_facet | Z.-M. Wang T. Arai M. Kumagai |
| author_sort | Z.-M. Wang |
| collection | DOAJ |
| description | Three kinds of mordenite were examined for the adsorptive separation and removal of trace amounts of 14 CO 2 and moist NO x contained in the off-gases of reprocessing plants for spent nuclear fuels. It was found that protonation of mordenite eliminated any possible removal of CO 2 by specific adsorption but induced the dissociative adsorption of NO 2 with the formation of nitric acid-like adsorbed species and NO oxidation. FT-IR spectroscopic results confirmed that the Brönsted acid sites existing on H-type mordenites exhibit no interaction with CO 2 molecules but can catalyze the dissociative adsorption of NO 2 . Such properties, together with the lower adsorption temperature and the thermal stability of the adsorbent, suggest a promising process involving H-type mordenites whereby NO x can be selectively captured and returned to the dissolving solution while trace amounts of 14 CO 2 -containing carbon oxides pass through the system allowing their subsequent complete removal by entrapment in a solid matrix. |
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| format | Article |
| id | doaj.art-e5869004f5904e4c9cd4fc95ce230d7c |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2025-02-17T08:27:29Z |
| publishDate | 1999-04-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-e5869004f5904e4c9cd4fc95ce230d7c2025-01-02T22:37:33ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40381999-04-011710.1177/026361749901700403The Separate Removal of Trace CO and Moist NO from Off-Gases by Adsorption on H-Type MordeniteZ.-M. WangT. AraiM. KumagaiThree kinds of mordenite were examined for the adsorptive separation and removal of trace amounts of 14 CO 2 and moist NO x contained in the off-gases of reprocessing plants for spent nuclear fuels. It was found that protonation of mordenite eliminated any possible removal of CO 2 by specific adsorption but induced the dissociative adsorption of NO 2 with the formation of nitric acid-like adsorbed species and NO oxidation. FT-IR spectroscopic results confirmed that the Brönsted acid sites existing on H-type mordenites exhibit no interaction with CO 2 molecules but can catalyze the dissociative adsorption of NO 2 . Such properties, together with the lower adsorption temperature and the thermal stability of the adsorbent, suggest a promising process involving H-type mordenites whereby NO x can be selectively captured and returned to the dissolving solution while trace amounts of 14 CO 2 -containing carbon oxides pass through the system allowing their subsequent complete removal by entrapment in a solid matrix.https://doi.org/10.1177/026361749901700403 |
| spellingShingle | Z.-M. Wang T. Arai M. Kumagai The Separate Removal of Trace CO and Moist NO from Off-Gases by Adsorption on H-Type Mordenite Adsorption Science & Technology |
| title | The Separate Removal of Trace CO and Moist NO from Off-Gases by Adsorption on H-Type Mordenite |
| title_full | The Separate Removal of Trace CO and Moist NO from Off-Gases by Adsorption on H-Type Mordenite |
| title_fullStr | The Separate Removal of Trace CO and Moist NO from Off-Gases by Adsorption on H-Type Mordenite |
| title_full_unstemmed | The Separate Removal of Trace CO and Moist NO from Off-Gases by Adsorption on H-Type Mordenite |
| title_short | The Separate Removal of Trace CO and Moist NO from Off-Gases by Adsorption on H-Type Mordenite |
| title_sort | separate removal of trace co and moist no from off gases by adsorption on h type mordenite |
| url | https://doi.org/10.1177/026361749901700403 |
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