Comparison study on molybdena-titania supported on TUD-1 and TUD-C: properties and catalytic performance
A direct comparison between nanostructured Technische Universiteit Delft-1 (TUD-1) and Technische Universiteit Delft-Crystalline (TUD-C) as catalyst supports for molybdenum doped titania catalysts was carried out. The characterizations results showed that TUD-1 is a mesoporous amorphous silicate mat...
| Main Authors: | , , |
|---|---|
| Format: | Conference or Workshop Item |
| Published: |
2018
|
| Subjects: |
| _version_ | 1796863589013782528 |
|---|---|
| author | Lee, Siew Ling Yuliati, Leny Ooi, Yee Khai |
| author_facet | Lee, Siew Ling Yuliati, Leny Ooi, Yee Khai |
| author_sort | Lee, Siew Ling |
| collection | ePrints |
| description | A direct comparison between nanostructured Technische Universiteit Delft-1 (TUD-1) and Technische Universiteit Delft-Crystalline (TUD-C) as catalyst supports for molybdenum doped titania catalysts was carried out. The characterizations results showed that TUD-1 is a mesoporous amorphous silicate material with high surface area and porosity. Meanwhile, TUD-C is an ordered mesoporous crystalline aluminosilicate matters featured high acidity. In fact, TUD-C was obtained from the modification of TUD-1 with the addition of aluminium isopropoxide as the zeolite precursor. The catalytic testing demonstrated TUD-1 supported 1 mol% molybdena doped titania was inactive for epoxidation of 1,2-epoxyoctane and showed moderate activity (18%-21% conversion yield) and selectivity (approximately 70%) in epoxidation reaction of 1,2-epoxycyclohexane (0.51 mmol) and styrene oxide (1.25 mmol). Meanwhile, TUD-C supported 1 mol% molybdena doped titania achieved remarkably higher conversion yield for 1,2-epoxyoctane (2.7 mmol), 1,2-epoxycyclohexane (4.8 mmol) and styrene oxide (6.2 mmol) respectively with 100% selectivity towards all 3 analytes under ambient condition with constant stirring. The results strongly indicated that high Bronsted and Lewis acidic sites existed within the TUD-C framework is the key factor for the exceptional oxidative capabilities for molybdena-titania catalysts. |
| first_indexed | 2024-03-05T20:29:00Z |
| format | Conference or Workshop Item |
| id | utm.eprints-82457 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:29:00Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | utm.eprints-824572019-10-08T06:56:53Z http://eprints.utm.my/82457/ Comparison study on molybdena-titania supported on TUD-1 and TUD-C: properties and catalytic performance Lee, Siew Ling Yuliati, Leny Ooi, Yee Khai Q Science (General) A direct comparison between nanostructured Technische Universiteit Delft-1 (TUD-1) and Technische Universiteit Delft-Crystalline (TUD-C) as catalyst supports for molybdenum doped titania catalysts was carried out. The characterizations results showed that TUD-1 is a mesoporous amorphous silicate material with high surface area and porosity. Meanwhile, TUD-C is an ordered mesoporous crystalline aluminosilicate matters featured high acidity. In fact, TUD-C was obtained from the modification of TUD-1 with the addition of aluminium isopropoxide as the zeolite precursor. The catalytic testing demonstrated TUD-1 supported 1 mol% molybdena doped titania was inactive for epoxidation of 1,2-epoxyoctane and showed moderate activity (18%-21% conversion yield) and selectivity (approximately 70%) in epoxidation reaction of 1,2-epoxycyclohexane (0.51 mmol) and styrene oxide (1.25 mmol). Meanwhile, TUD-C supported 1 mol% molybdena doped titania achieved remarkably higher conversion yield for 1,2-epoxyoctane (2.7 mmol), 1,2-epoxycyclohexane (4.8 mmol) and styrene oxide (6.2 mmol) respectively with 100% selectivity towards all 3 analytes under ambient condition with constant stirring. The results strongly indicated that high Bronsted and Lewis acidic sites existed within the TUD-C framework is the key factor for the exceptional oxidative capabilities for molybdena-titania catalysts. 2018 Conference or Workshop Item PeerReviewed Lee, Siew Ling and Yuliati, Leny and Ooi, Yee Khai (2018) Comparison study on molybdena-titania supported on TUD-1 and TUD-C: properties and catalytic performance. In: The 3rd International Conference of Materials Research Society of Indonesia (MRS-id) Meeting 2018. http://dx.doi.org/10.1088/2053-1591/ab12be |
| spellingShingle | Q Science (General) Lee, Siew Ling Yuliati, Leny Ooi, Yee Khai Comparison study on molybdena-titania supported on TUD-1 and TUD-C: properties and catalytic performance |
| title | Comparison study on molybdena-titania supported on TUD-1 and TUD-C: properties and catalytic performance |
| title_full | Comparison study on molybdena-titania supported on TUD-1 and TUD-C: properties and catalytic performance |
| title_fullStr | Comparison study on molybdena-titania supported on TUD-1 and TUD-C: properties and catalytic performance |
| title_full_unstemmed | Comparison study on molybdena-titania supported on TUD-1 and TUD-C: properties and catalytic performance |
| title_short | Comparison study on molybdena-titania supported on TUD-1 and TUD-C: properties and catalytic performance |
| title_sort | comparison study on molybdena titania supported on tud 1 and tud c properties and catalytic performance |
| topic | Q Science (General) |
| work_keys_str_mv | AT leesiewling comparisonstudyonmolybdenatitaniasupportedontud1andtudcpropertiesandcatalyticperformance AT yuliatileny comparisonstudyonmolybdenatitaniasupportedontud1andtudcpropertiesandcatalyticperformance AT ooiyeekhai comparisonstudyonmolybdenatitaniasupportedontud1andtudcpropertiesandcatalyticperformance |