Kinetics of corrosive sulfur adsorption in transformer oil with Ag-Y, Ce-Y and Cu-Y zeolites
Ag-Y, Ce-Y, and Cu-Y zeolites were successfully prepared via the liquid phase ion exchange method as adsorbents for removing dibenzyl disulfide and dodecyl mercaptan in transformer insulating oil. The physicochemical properties of the adsorbents were investigated by X-ray diffraction, X-ray fluoresc...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2019-07-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/0263617419848882 |
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| author | Deliang He Ping Li Jun Hu Tao Wan |
| author_facet | Deliang He Ping Li Jun Hu Tao Wan |
| author_sort | Deliang He |
| collection | DOAJ |
| description | Ag-Y, Ce-Y, and Cu-Y zeolites were successfully prepared via the liquid phase ion exchange method as adsorbents for removing dibenzyl disulfide and dodecyl mercaptan in transformer insulating oil. The physicochemical properties of the adsorbents were investigated by X-ray diffraction, X-ray fluorescence, and N 2 adsorption–desorption. The removal efficiency increased rapidly with increased dosage of Ag-Y (0.5–1.0 wt%) and Ce-Y, Cu-Y (1.0–3.0 wt%), and became slower with its increased dosage. Kinetic studies showed the adsorption on these adsorbents can be described by a pseudo-second-order model, and the rate constants increased with increasing temperature, indicating the endothermic nature of the adsorption. The activation energies (E a ) calculated for dibenzyl disulfide and dodecyl mercaptan were over 40 kJ mol −1 which clearly indicated that the adsorption process on the three adsorbents was dominated by chemical adsorption. |
| format | Article |
| id | doaj-art-0ca4db648d3944ef9335c230feaef2bc |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2019-07-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-0ca4db648d3944ef9335c230feaef2bc2025-02-03T10:07:39ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382019-07-013710.1177/0263617419848882Kinetics of corrosive sulfur adsorption in transformer oil with Ag-Y, Ce-Y and Cu-Y zeolitesDeliang HePing LiJun HuTao WanAg-Y, Ce-Y, and Cu-Y zeolites were successfully prepared via the liquid phase ion exchange method as adsorbents for removing dibenzyl disulfide and dodecyl mercaptan in transformer insulating oil. The physicochemical properties of the adsorbents were investigated by X-ray diffraction, X-ray fluorescence, and N 2 adsorption–desorption. The removal efficiency increased rapidly with increased dosage of Ag-Y (0.5–1.0 wt%) and Ce-Y, Cu-Y (1.0–3.0 wt%), and became slower with its increased dosage. Kinetic studies showed the adsorption on these adsorbents can be described by a pseudo-second-order model, and the rate constants increased with increasing temperature, indicating the endothermic nature of the adsorption. The activation energies (E a ) calculated for dibenzyl disulfide and dodecyl mercaptan were over 40 kJ mol −1 which clearly indicated that the adsorption process on the three adsorbents was dominated by chemical adsorption.https://doi.org/10.1177/0263617419848882 |
| spellingShingle | Deliang He Ping Li Jun Hu Tao Wan Kinetics of corrosive sulfur adsorption in transformer oil with Ag-Y, Ce-Y and Cu-Y zeolites Adsorption Science & Technology |
| title | Kinetics of corrosive sulfur adsorption in transformer oil with Ag-Y, Ce-Y and Cu-Y zeolites |
| title_full | Kinetics of corrosive sulfur adsorption in transformer oil with Ag-Y, Ce-Y and Cu-Y zeolites |
| title_fullStr | Kinetics of corrosive sulfur adsorption in transformer oil with Ag-Y, Ce-Y and Cu-Y zeolites |
| title_full_unstemmed | Kinetics of corrosive sulfur adsorption in transformer oil with Ag-Y, Ce-Y and Cu-Y zeolites |
| title_short | Kinetics of corrosive sulfur adsorption in transformer oil with Ag-Y, Ce-Y and Cu-Y zeolites |
| title_sort | kinetics of corrosive sulfur adsorption in transformer oil with ag y ce y and cu y zeolites |
| url | https://doi.org/10.1177/0263617419848882 |
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