Removal of NOx by Adsorption/Decomposition on H3PW12O40•6H2O Supported on Ceria
Abstract We synthesized catalysts composed of CeO2 and varying percentages of HPW and assessed their capacity to adsorb and decompose NOx using XRD, FTIR spectroscopy, and BET analysis. The denitrification performance of the catalysts was evaluated by investigating the dynamic NOx adsorption as well...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Springer
2020-05-01
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| Series: | Aerosol and Air Quality Research |
| Subjects: | |
| Online Access: | https://doi.org/10.4209/aaqr.2020.03.0110 |
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| Summary: | Abstract We synthesized catalysts composed of CeO2 and varying percentages of HPW and assessed their capacity to adsorb and decompose NOx using XRD, FTIR spectroscopy, and BET analysis. The denitrification performance of the catalysts was evaluated by investigating the dynamic NOx adsorption as well as other relevant factors. The IR spectra of the HPW revealed that the adsorbed NOx entered the bulk phase of the HPW and replaced the crystallization water, combining with its protons to form NOH+. The HPW/CeO2 composites displayed a maximum NOx adsorption rate (85.6 mg-NO2 g-HPW-1) that far exceeded that of HPW alone (50.5 mg-NO2 g-HPW-1). GC-MS confirmed that temperature programming reduced the adsorbed NOx to N2. |
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| ISSN: | 1680-8584 2071-1409 |