Effect of drying rate on the performance of Pt-Sn-K/γ-Al2O3 catalyst for propane dehydrogenation
The dehydrogenation of propane to propylene over Pt-Sn-K/γ-Al2O3 catalysts prepared by sequential impregnation was studied. Three drying rates, that is, 5, 10 and 15 °C/min were applied after incipient wetness impregnation of the support (1.6–1.8 mm in diameter) with KNO3. The obtained catalysts wer...
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| Format: | Article |
| Language: | English |
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Iranian Association of Chemical Engineering (IAChE)
2021-03-01
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| Series: | Iranian Journal of Chemical Engineering |
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| Online Access: | https://www.ijche.com/article_129751_dce62588d787a98636dfa97d048dd43b.pdf |
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| author | F. Tahriri zangeneh S. sahebdelfar A. Taeb |
| author_facet | F. Tahriri zangeneh S. sahebdelfar A. Taeb |
| author_sort | F. Tahriri zangeneh |
| collection | DOAJ |
| description | The dehydrogenation of propane to propylene over Pt-Sn-K/γ-Al2O3 catalysts prepared by sequential impregnation was studied. Three drying rates, that is, 5, 10 and 15 °C/min were applied after incipient wetness impregnation of the support (1.6–1.8 mm in diameter) with KNO3. The obtained catalysts were characterized by N2 physisorption, SEM-EDAX analysis and XRF for textural and chemical properties. Catalytic performance tests were performed in a fixed-bed quartz reactor under kinetically controlled conditions for proper catalyst screening. The EDAX measurement results illustrated that the potassium concentration profile changed with drying rate with the catalyst prepared by lower drying rate exhibited highest K concentration at the center as well as highest propylene yield. These were attributed to the retraction of impregnation solution during drying at slow rates which results in lower concentration of acidic sites in catalyst center, thereby reducing the contact time of the propylene product with strong acid sites during reaction. |
| format | Article |
| id | doaj-art-5c1bdd723aa94dc78e30a5cbb4156ff1 |
| institution | OA Journals |
| issn | 1735-5397 2008-2355 |
| language | English |
| publishDate | 2021-03-01 |
| publisher | Iranian Association of Chemical Engineering (IAChE) |
| record_format | Article |
| series | Iranian Journal of Chemical Engineering |
| spelling | doaj-art-5c1bdd723aa94dc78e30a5cbb4156ff12025-08-20T02:25:08ZengIranian Association of Chemical Engineering (IAChE)Iranian Journal of Chemical Engineering1735-53972008-23552021-03-01181162410.22034/ijche.2021.129751129751Effect of drying rate on the performance of Pt-Sn-K/γ-Al2O3 catalyst for propane dehydrogenationF. Tahriri zangeneh0S. sahebdelfar1A. Taeb2Catalyst group,national petrochemical companyPetrochemical Research and Technology Company, National Petrochemical CompanyDepartment of Chemistry, Science and Research Branch, Islamic Azad UniversityThe dehydrogenation of propane to propylene over Pt-Sn-K/γ-Al2O3 catalysts prepared by sequential impregnation was studied. Three drying rates, that is, 5, 10 and 15 °C/min were applied after incipient wetness impregnation of the support (1.6–1.8 mm in diameter) with KNO3. The obtained catalysts were characterized by N2 physisorption, SEM-EDAX analysis and XRF for textural and chemical properties. Catalytic performance tests were performed in a fixed-bed quartz reactor under kinetically controlled conditions for proper catalyst screening. The EDAX measurement results illustrated that the potassium concentration profile changed with drying rate with the catalyst prepared by lower drying rate exhibited highest K concentration at the center as well as highest propylene yield. These were attributed to the retraction of impregnation solution during drying at slow rates which results in lower concentration of acidic sites in catalyst center, thereby reducing the contact time of the propylene product with strong acid sites during reaction.https://www.ijche.com/article_129751_dce62588d787a98636dfa97d048dd43b.pdfpt-sn-k/γ-al2o3propane dehydrogenationimpregnationdryingpotassium distribution |
| spellingShingle | F. Tahriri zangeneh S. sahebdelfar A. Taeb Effect of drying rate on the performance of Pt-Sn-K/γ-Al2O3 catalyst for propane dehydrogenation Iranian Journal of Chemical Engineering pt-sn-k/γ-al2o3 propane dehydrogenation impregnation drying potassium distribution |
| title | Effect of drying rate on the performance of Pt-Sn-K/γ-Al2O3 catalyst for propane dehydrogenation |
| title_full | Effect of drying rate on the performance of Pt-Sn-K/γ-Al2O3 catalyst for propane dehydrogenation |
| title_fullStr | Effect of drying rate on the performance of Pt-Sn-K/γ-Al2O3 catalyst for propane dehydrogenation |
| title_full_unstemmed | Effect of drying rate on the performance of Pt-Sn-K/γ-Al2O3 catalyst for propane dehydrogenation |
| title_short | Effect of drying rate on the performance of Pt-Sn-K/γ-Al2O3 catalyst for propane dehydrogenation |
| title_sort | effect of drying rate on the performance of pt sn k γ al2o3 catalyst for propane dehydrogenation |
| topic | pt-sn-k/γ-al2o3 propane dehydrogenation impregnation drying potassium distribution |
| url | https://www.ijche.com/article_129751_dce62588d787a98636dfa97d048dd43b.pdf |
| work_keys_str_mv | AT ftahririzangeneh effectofdryingrateontheperformanceofptsnkgal2o3catalystforpropanedehydrogenation AT ssahebdelfar effectofdryingrateontheperformanceofptsnkgal2o3catalystforpropanedehydrogenation AT ataeb effectofdryingrateontheperformanceofptsnkgal2o3catalystforpropanedehydrogenation |