Determination of Lewis and Brönsted acid sites by gas flow-injection technique
Gas flow-injection technique pyridine-FTIR was studied for determination of Lewis and Brönsted acid sites on the solid super acid catalysts. The system consists of stainless steel gas cell which can be heated up to 623 K, CaF2 windows, pyridine injection port and double liquid nitrogen trap for remo...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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UTM Press
2010
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| Online Access: | http://irep.iium.edu.my/71289/ http://irep.iium.edu.my/71289/7/71289.pdf |
| _version_ | 1848787430158630912 |
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| author | Musthofa, Malik Karim, Ainul Hakimah Ahmad Fadzlillaah, Nurrulhidayah Annuar, Nur Hazirah Rozali Jalil, Aishah Abdul Triwahyono, Sugeng |
| author_facet | Musthofa, Malik Karim, Ainul Hakimah Ahmad Fadzlillaah, Nurrulhidayah Annuar, Nur Hazirah Rozali Jalil, Aishah Abdul Triwahyono, Sugeng |
| author_sort | Musthofa, Malik |
| building | IIUM Repository |
| collection | Online Access |
| description | Gas flow-injection technique pyridine-FTIR was studied for determination of Lewis and Brönsted acid sites on the solid super acid catalysts. The system consists of stainless steel gas cell which can be heated up to 623 K, CaF2 windows, pyridine injection port and double liquid nitrogen trap for removal of moisture. Pure nitrogen gas and pyridine were used as a carrier and probe molecule. Pyridine was injected to the sysem at 423 K followed by flushing of N2 gas through double liquid nitrogen trap at 423 for 1 h and at 573 K for 30 min. All spectra were recorded at room temperature. This technique gave similar results to those of taken by vacuum system for HZSM-5, Pt/SO4 2--ZrO2, Al2O3 catalysts. |
| first_indexed | 2025-11-14T17:24:48Z |
| format | Article |
| id | iium-71289 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T17:24:48Z |
| publishDate | 2010 |
| publisher | UTM Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-712892020-02-21T01:14:25Z http://irep.iium.edu.my/71289/ Determination of Lewis and Brönsted acid sites by gas flow-injection technique Musthofa, Malik Karim, Ainul Hakimah Ahmad Fadzlillaah, Nurrulhidayah Annuar, Nur Hazirah Rozali Jalil, Aishah Abdul Triwahyono, Sugeng QD Chemistry Gas flow-injection technique pyridine-FTIR was studied for determination of Lewis and Brönsted acid sites on the solid super acid catalysts. The system consists of stainless steel gas cell which can be heated up to 623 K, CaF2 windows, pyridine injection port and double liquid nitrogen trap for removal of moisture. Pure nitrogen gas and pyridine were used as a carrier and probe molecule. Pyridine was injected to the sysem at 423 K followed by flushing of N2 gas through double liquid nitrogen trap at 423 for 1 h and at 573 K for 30 min. All spectra were recorded at room temperature. This technique gave similar results to those of taken by vacuum system for HZSM-5, Pt/SO4 2--ZrO2, Al2O3 catalysts. UTM Press 2010 Article PeerReviewed application/pdf en http://irep.iium.edu.my/71289/7/71289.pdf Musthofa, Malik and Karim, Ainul Hakimah and Ahmad Fadzlillaah, Nurrulhidayah and Annuar, Nur Hazirah Rozali and Jalil, Aishah Abdul and Triwahyono, Sugeng (2010) Determination of Lewis and Brönsted acid sites by gas flow-injection technique. Malaysian Journal of Fundamental and Applied Sciences, 6 (2). pp. 127-131. ISSN 2289-5981 E-ISSN 2289-599X https://mjfas.utm.my/index.php/mjfas/article/view/195/538 |
| spellingShingle | QD Chemistry Musthofa, Malik Karim, Ainul Hakimah Ahmad Fadzlillaah, Nurrulhidayah Annuar, Nur Hazirah Rozali Jalil, Aishah Abdul Triwahyono, Sugeng Determination of Lewis and Brönsted acid sites by gas flow-injection technique |
| title | Determination of Lewis and Brönsted acid sites by gas flow-injection technique |
| title_full | Determination of Lewis and Brönsted acid sites by gas flow-injection technique |
| title_fullStr | Determination of Lewis and Brönsted acid sites by gas flow-injection technique |
| title_full_unstemmed | Determination of Lewis and Brönsted acid sites by gas flow-injection technique |
| title_short | Determination of Lewis and Brönsted acid sites by gas flow-injection technique |
| title_sort | determination of lewis and brönsted acid sites by gas flow-injection technique |
| topic | QD Chemistry |
| url | http://irep.iium.edu.my/71289/ http://irep.iium.edu.my/71289/ http://irep.iium.edu.my/71289/7/71289.pdf |