Hydrophobic fluorinated TiO2-ZrO2 as catalyst in epoxidation of 1-octene with aqueous hydrogen peroxide
A new heterogeneous oxidation catalyst was prepared by impregnation of TiO2 from titanium(IV)tetra-2-propoxide on the surface of ZrO2. The surfaces of TiO2-ZrO2 particles were then modified by the fluorination of ammonium hexafluorosilicate and followed by alkylsilylation of n-octadecyltrichlorosila...
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Elsevier B.V.
2006
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| Online Access: | http://eprints.utm.my/7305/ |
| _version_ | 1848891442000297984 |
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| author | Nur , Hadi Ng, Yun Hau Misnon, Izan Izwan Hamdan, Halimaton Muhid, Mohd Nazlan Mohd |
| author_facet | Nur , Hadi Ng, Yun Hau Misnon, Izan Izwan Hamdan, Halimaton Muhid, Mohd Nazlan Mohd |
| author_sort | Nur , Hadi |
| building | UTeM Institutional Repository |
| collection | Online Access |
| description | A new heterogeneous oxidation catalyst was prepared by impregnation of TiO2 from titanium(IV)tetra-2-propoxide on the surface of ZrO2. The surfaces of TiO2-ZrO2 particles were then modified by the fluorination of ammonium hexafluorosilicate and followed by alkylsilylation of n-octadecyltrichlorosilane (OTS). The resulting catalysts were characterized by X-ray diffraction (XRD), nitrogen adsorption isotherm, UV-Vis Diffuse Reflectance (UV-Vis DR), and Energy Dispersive X-Ray Analysis (EDAX) techniques. The catalytic potential of catalysts for oxidation reactions has been verified in the liquid phase epoxidation of 1-octene to 1,2-epoxyoctane with aqueous hydrogen peroxide. It is demonstrated that the fluorination and alkylsilylation enhance the catalytic activity of TiO2-ZrO2. A high catalytic activity of the modified TiO2-ZrO2 was related to the modification of the local environment of titanium active site and increasing the hydrophobicity of catalyst particles by fluorination and alkylsilylation. |
| first_indexed | 2025-11-15T20:58:02Z |
| format | Article |
| id | utm-7305 |
| institution | Universiti Teknologi Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T20:58:02Z |
| publishDate | 2006 |
| publisher | Elsevier B.V. |
| recordtype | eprints |
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| spelling | utm-73052009-01-01T07:14:16Z http://eprints.utm.my/7305/ Hydrophobic fluorinated TiO2-ZrO2 as catalyst in epoxidation of 1-octene with aqueous hydrogen peroxide Nur , Hadi Ng, Yun Hau Misnon, Izan Izwan Hamdan, Halimaton Muhid, Mohd Nazlan Mohd TP Chemical technology A new heterogeneous oxidation catalyst was prepared by impregnation of TiO2 from titanium(IV)tetra-2-propoxide on the surface of ZrO2. The surfaces of TiO2-ZrO2 particles were then modified by the fluorination of ammonium hexafluorosilicate and followed by alkylsilylation of n-octadecyltrichlorosilane (OTS). The resulting catalysts were characterized by X-ray diffraction (XRD), nitrogen adsorption isotherm, UV-Vis Diffuse Reflectance (UV-Vis DR), and Energy Dispersive X-Ray Analysis (EDAX) techniques. The catalytic potential of catalysts for oxidation reactions has been verified in the liquid phase epoxidation of 1-octene to 1,2-epoxyoctane with aqueous hydrogen peroxide. It is demonstrated that the fluorination and alkylsilylation enhance the catalytic activity of TiO2-ZrO2. A high catalytic activity of the modified TiO2-ZrO2 was related to the modification of the local environment of titanium active site and increasing the hydrophobicity of catalyst particles by fluorination and alkylsilylation. Elsevier B.V. 2006-09 Article PeerReviewed Nur , Hadi and Ng, Yun Hau and Misnon, Izan Izwan and Hamdan, Halimaton and Muhid, Mohd Nazlan Mohd (2006) Hydrophobic fluorinated TiO2-ZrO2 as catalyst in epoxidation of 1-octene with aqueous hydrogen peroxide. Materials Letters, 60 (17-18). pp. 2274-2277. ISSN 0167-577X http://dx.doi.org/10.1016/j.matlet.2005.12.139 10.1016/j.matlet.2005.12.139 |
| spellingShingle | TP Chemical technology Nur , Hadi Ng, Yun Hau Misnon, Izan Izwan Hamdan, Halimaton Muhid, Mohd Nazlan Mohd Hydrophobic fluorinated TiO2-ZrO2 as catalyst in epoxidation of 1-octene with aqueous hydrogen peroxide |
| title | Hydrophobic fluorinated TiO2-ZrO2 as catalyst in epoxidation of 1-octene with aqueous hydrogen peroxide
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| title_full | Hydrophobic fluorinated TiO2-ZrO2 as catalyst in epoxidation of 1-octene with aqueous hydrogen peroxide
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| title_fullStr | Hydrophobic fluorinated TiO2-ZrO2 as catalyst in epoxidation of 1-octene with aqueous hydrogen peroxide
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| title_full_unstemmed | Hydrophobic fluorinated TiO2-ZrO2 as catalyst in epoxidation of 1-octene with aqueous hydrogen peroxide
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| title_short | Hydrophobic fluorinated TiO2-ZrO2 as catalyst in epoxidation of 1-octene with aqueous hydrogen peroxide
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| title_sort | hydrophobic fluorinated tio2-zro2 as catalyst in epoxidation of 1-octene with aqueous hydrogen peroxide |
| topic | TP Chemical technology |
| url | http://eprints.utm.my/7305/ http://eprints.utm.my/7305/ http://eprints.utm.my/7305/ |