Khooy Yazdi, Mahsa Khosh (2011) Preparation of zinc (II) porphyrin with a mesoporous structure and its photoctalytic properties for the oxidation of aromatics. Masters thesis, Universiti Teknologi Malaysia, Faculty of Science.
Restricted to Repository staff only
PDF (1st Chapter)
PDF (Table of Contents)
Mesoporous molecular sieve MCM-41 was used as support for the immobilization of bulky zinc(II)-5, 10, 15, 20-tetraphenylporphyrin (ZnTPP). Zinc porphyrin was prepared via the treatment of ZnCl2 with 5, 10, 15, 20-tetraphenyl- 21H, 23H-porphyrin in dimethylformamide (DMF). The product was crystallized and characterized by Ultraviolet Visible spectroscopy (UV-Vis) and Fourier Transform Infrared spectroscopy (FTIR spectroscopy). ZnTPP encapsulated inside the mesoporouse of ordered structure of MCM-41 with three different concentrations were prepared by treatment of zinc porphyrin with MCM-41 in DMF in room temperature. The materials obtained were characterized by X-ray Diffraction (XRD), and Ultraviolet Visible Diffuse Reflectance (UV-Vis DR) spectroscopy. The powder XRD data confirmed that the ordered structure of mesoporouse MCM-41 remained intact after encapsulation process. Characterization of ZnTPP composite with MCM-41 using UV-Vis DR confirmed that the structure of ZnTPP in the support is similar with bare ZnTPP. Encapsulated ZnTPP as catalyst in a photoexcited system was found to be active and selective in the D-limonene biotransformation under mild condition with hydrogen peroxide as the oxidant. The influence of different concentrations of catalyst was studied for photocatalytic oxidation of D-limonene to carvone. The products were identified by using Gas Chromatography (GC) and Gas Chromatography-Mass Spectrometry (GC-MS).
|Item Type:||Thesis (Masters)|
|Additional Information:||Thesis (Sarjana Sains (Kimia)) - Universiti Teknologi Malaysia, 2011; Supervisor : Prof. Dr. Salasiah Endud|
|Uncontrolled Keywords:||photocatalysis, porphyrins|
|Deposited By:||Kamariah Mohamed Jong|
|Deposited On:||06 Dec 2012 04:21|
|Last Modified:||06 Dec 2012 04:25|
Repository Staff Only: item control page