FT-IR study of N2 adsorption on ZnO and HgO modified Na-Y zeolite adsorbents
FT-IR was used to study in situ gas-zeolite surface interactions and adsorbed species formed on ZnO and HgO modified Na-Y zeolites under ambient temperature (298 K). A general correlation between the integrated absorption band areas and the positions of v(N-N) bands interacting with the active adsor...
| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
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2005
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| Online Access: | http://eprints.utm.my/5397/1/ChiengY.Y.2005_FT-IRStudyOfN2Adsorption.pdf |
| _version_ | 1825909730683387904 |
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| author | Chieng, Y. Y. Kamarudin, Khairul Sozana Nor Hamdan, Halimaton Mat, Hanapi |
| author_facet | Chieng, Y. Y. Kamarudin, Khairul Sozana Nor Hamdan, Halimaton Mat, Hanapi |
| author_sort | Chieng, Y. Y. |
| collection | ePrints |
| description | FT-IR was used to study in situ gas-zeolite surface interactions and adsorbed species formed on ZnO and HgO modified Na-Y zeolites under ambient temperature (298 K). A general correlation between the integrated absorption band areas and the positions of v(N-N) bands interacting with the active adsorption sites on modified Na-Y zeolites are discussed. Results clearly demonstrate that the FT-IR bands of N2 adsorbed on ZnO and HgO modified Na-Y zeolite was governed not only by the properties of adsorbate but also by the nature and strength of the active adsorption sites present on the zeolite surfaces. In general, blue-shifted v(N-N) bands are obtained relative to the gas-phase Raman frequency, which are due to the different adsorption behavior of these adsorbed molecules with end-on orientation on the active adsorption sites. In addition, the adsorbing molecules interact strongly with the surface at initial stage. The strength of these interactions will then decrease as adsorption active sites are fully occupied. |
| first_indexed | 2024-03-05T18:06:31Z |
| format | Conference or Workshop Item |
| id | utm.eprints-5397 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T18:06:31Z |
| publishDate | 2005 |
| record_format | dspace |
| spelling | utm.eprints-53972010-06-01T15:30:09Z http://eprints.utm.my/5397/ FT-IR study of N2 adsorption on ZnO and HgO modified Na-Y zeolite adsorbents Chieng, Y. Y. Kamarudin, Khairul Sozana Nor Hamdan, Halimaton Mat, Hanapi T Technology (General) FT-IR was used to study in situ gas-zeolite surface interactions and adsorbed species formed on ZnO and HgO modified Na-Y zeolites under ambient temperature (298 K). A general correlation between the integrated absorption band areas and the positions of v(N-N) bands interacting with the active adsorption sites on modified Na-Y zeolites are discussed. Results clearly demonstrate that the FT-IR bands of N2 adsorbed on ZnO and HgO modified Na-Y zeolite was governed not only by the properties of adsorbate but also by the nature and strength of the active adsorption sites present on the zeolite surfaces. In general, blue-shifted v(N-N) bands are obtained relative to the gas-phase Raman frequency, which are due to the different adsorption behavior of these adsorbed molecules with end-on orientation on the active adsorption sites. In addition, the adsorbing molecules interact strongly with the surface at initial stage. The strength of these interactions will then decrease as adsorption active sites are fully occupied. 2005 Conference or Workshop Item PeerReviewed application/pdf en http://eprints.utm.my/5397/1/ChiengY.Y.2005_FT-IRStudyOfN2Adsorption.pdf Chieng, Y. Y. and Kamarudin, Khairul Sozana Nor and Hamdan, Halimaton and Mat, Hanapi (2005) FT-IR study of N2 adsorption on ZnO and HgO modified Na-Y zeolite adsorbents. In: 2nd International Conference on Chemical and Bioprocess Engineering in conjunction with 19th Symposium of Malaysian Chemical Engineers (SOMChE 2005), 8-10 December 2005, Kota Kinabalu, Sabah. |
| spellingShingle | T Technology (General) Chieng, Y. Y. Kamarudin, Khairul Sozana Nor Hamdan, Halimaton Mat, Hanapi FT-IR study of N2 adsorption on ZnO and HgO modified Na-Y zeolite adsorbents |
| title | FT-IR study of N2 adsorption on ZnO and HgO modified Na-Y zeolite adsorbents |
| title_full | FT-IR study of N2 adsorption on ZnO and HgO modified Na-Y zeolite adsorbents |
| title_fullStr | FT-IR study of N2 adsorption on ZnO and HgO modified Na-Y zeolite adsorbents |
| title_full_unstemmed | FT-IR study of N2 adsorption on ZnO and HgO modified Na-Y zeolite adsorbents |
| title_short | FT-IR study of N2 adsorption on ZnO and HgO modified Na-Y zeolite adsorbents |
| title_sort | ft ir study of n2 adsorption on zno and hgo modified na y zeolite adsorbents |
| topic | T Technology (General) |
| url | http://eprints.utm.my/5397/1/ChiengY.Y.2005_FT-IRStudyOfN2Adsorption.pdf |
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