Biofunctional Nb/Ti-MCM-41 catalyst in oxidative acidic reaction of cyclohexene to diol
Bifunctional oxidative and acidic catalyst was prepared by incorporating titanium ion (Ti4+) and niobic acid in mesoporous molecular sieves MCM -41 structure. The catalyst is active both in oxidation, and acid-catalyzed reaction of olefin to diol. Nb/Ti-MCM-41 catalyst was prepared by first synthesi...
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| Format: | Article |
| Language: | English |
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Malaysian Society of Analytical Sciences
2007
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| Online Access: | http://eprints.utm.my/8138/1/ZRamli2007-Bifunctional_Nb_Ti-MCM-41_Catalyst_In_Oxidative.pdf |
| _version_ | 1796854339874062336 |
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| author | Ramli, Zainab Abdul, Mazidah Prasetyoko, Didik |
| author_facet | Ramli, Zainab Abdul, Mazidah Prasetyoko, Didik |
| author_sort | Ramli, Zainab |
| collection | ePrints |
| description | Bifunctional oxidative and acidic catalyst was prepared by incorporating titanium ion (Ti4+) and niobic acid in mesoporous molecular sieves MCM -41 structure. The catalyst is active both in oxidation, and acid-catalyzed reaction of olefin to diol. Nb/Ti-MCM-41 catalyst was prepared by first synthesizing Ti-MCM-41 by hydrothermal method, followed by subsequent impregnation of niobic acid (Nb) into Ti-MCM-41 at various %wt Nb loading. The framework structure of Ti-MCM-41 collapsed after incorporation of Nb but the tetrahedral form of Ti4+ still maintained with octahedral Nb species. Both Brønsted and Lewis acid sites are present in all Nb/Ti-MCM-41 samples. The formation of cyclohexanediol in the epoxidation of cyclohexene proved the bifunctional oxidative and acidic catalyst through the formation of cyclohexane oxide. The yield increased with the increase amount of the Brønsted acid sites provided by niobium species. |
| first_indexed | 2024-03-05T18:12:47Z |
| format | Article |
| id | utm.eprints-8138 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T18:12:47Z |
| publishDate | 2007 |
| publisher | Malaysian Society of Analytical Sciences |
| record_format | dspace |
| spelling | utm.eprints-81382012-11-19T05:08:01Z http://eprints.utm.my/8138/ Biofunctional Nb/Ti-MCM-41 catalyst in oxidative acidic reaction of cyclohexene to diol Ramli, Zainab Abdul, Mazidah Prasetyoko, Didik QD Chemistry Bifunctional oxidative and acidic catalyst was prepared by incorporating titanium ion (Ti4+) and niobic acid in mesoporous molecular sieves MCM -41 structure. The catalyst is active both in oxidation, and acid-catalyzed reaction of olefin to diol. Nb/Ti-MCM-41 catalyst was prepared by first synthesizing Ti-MCM-41 by hydrothermal method, followed by subsequent impregnation of niobic acid (Nb) into Ti-MCM-41 at various %wt Nb loading. The framework structure of Ti-MCM-41 collapsed after incorporation of Nb but the tetrahedral form of Ti4+ still maintained with octahedral Nb species. Both Brønsted and Lewis acid sites are present in all Nb/Ti-MCM-41 samples. The formation of cyclohexanediol in the epoxidation of cyclohexene proved the bifunctional oxidative and acidic catalyst through the formation of cyclohexane oxide. The yield increased with the increase amount of the Brønsted acid sites provided by niobium species. Malaysian Society of Analytical Sciences 2007 Article PeerReviewed application/pdf en http://eprints.utm.my/8138/1/ZRamli2007-Bifunctional_Nb_Ti-MCM-41_Catalyst_In_Oxidative.pdf Ramli, Zainab and Abdul, Mazidah and Prasetyoko, Didik (2007) Biofunctional Nb/Ti-MCM-41 catalyst in oxidative acidic reaction of cyclohexene to diol. The Malaysian Journal of Analytical Sciences, 11 (1). pp. 117-123. ISSN 1394-2506 http://www.ukm.my/mjas/v11_n1/18_293C6-IR-bifunctionalcatalyst-1.pdf |
| spellingShingle | QD Chemistry Ramli, Zainab Abdul, Mazidah Prasetyoko, Didik Biofunctional Nb/Ti-MCM-41 catalyst in oxidative acidic reaction of cyclohexene to diol |
| title | Biofunctional Nb/Ti-MCM-41 catalyst in oxidative acidic reaction of cyclohexene to diol
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| title_full | Biofunctional Nb/Ti-MCM-41 catalyst in oxidative acidic reaction of cyclohexene to diol
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| title_fullStr | Biofunctional Nb/Ti-MCM-41 catalyst in oxidative acidic reaction of cyclohexene to diol
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| title_full_unstemmed | Biofunctional Nb/Ti-MCM-41 catalyst in oxidative acidic reaction of cyclohexene to diol
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| title_short | Biofunctional Nb/Ti-MCM-41 catalyst in oxidative acidic reaction of cyclohexene to diol
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| title_sort | biofunctional nb ti mcm 41 catalyst in oxidative acidic reaction of cyclohexene to diol |
| topic | QD Chemistry |
| url | http://eprints.utm.my/8138/1/ZRamli2007-Bifunctional_Nb_Ti-MCM-41_Catalyst_In_Oxidative.pdf |
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