Catalytic reaction of mediated oxidation in ethylbenzenes and benzyl alcohol using gold supported on zinc oxide catalyst / Afiq Anwar
Gold nanoparticles of 3 nm supported on zinc oxide was synthesized by urea deposition precipitation then utilized as a catalyst in ethylbenzene and benzylalcohol oxidation using tert-butyl hydroperoxide as the oxidant in acetonitrile solvent. The catalyst gave more than 50% conversion and high selec...
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| Format: | Thesis |
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2022
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| Online Access: | http://studentsrepo.um.edu.my/14296/ http://studentsrepo.um.edu.my/14296/1/Afiq_.pdf http://studentsrepo.um.edu.my/14296/2/Afiq.pdf |
| _version_ | 1848774935568187392 |
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| author | Afiq , Anwar |
| author_facet | Afiq , Anwar |
| author_sort | Afiq , Anwar |
| building | UM Research Repository |
| collection | Online Access |
| description | Gold nanoparticles of 3 nm supported on zinc oxide was synthesized by urea deposition precipitation then utilized as a catalyst in ethylbenzene and benzylalcohol oxidation using tert-butyl hydroperoxide as the oxidant in acetonitrile solvent. The catalyst gave more than 50% conversion and high selectivity towards acetophenone (50%) as the major product but moderate selectivity towards other products such as 1-phenylethanol, benzaldehyde, benzoic acid, and other compounds in 5 mL acetonitrile solvent at 100 °C for 24 hours reaction. The catalyst showed high selective for benzylalcohol oxidation with 60.3 % conversion and 100 % selectivity towards benzaldehyde. The fresh and spent catalysts were comprehensively characterized by XRD, HRTEM, XRF, BET and ATR-IR to correlate the catalyst activity. Factors affecting the catalytic activity in ethylbenzene oxidation such as gold loading, calcination treatment at 300 °C, type of solvent, reaction time, reaction temperature, oxidant to ethylbenzene molar ratio, catalyst weight and solvent volume were studied. The gold nanoparticle introduces a very selective reaction pathway and is an environmentally friendly catalyst as the oxidant used is less harmful.
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| first_indexed | 2025-11-14T14:06:12Z |
| format | Thesis |
| id | um-14296 |
| institution | University Malaya |
| institution_category | Local University |
| last_indexed | 2025-11-14T14:06:12Z |
| publishDate | 2022 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | um-142962023-04-14T18:43:08Z Catalytic reaction of mediated oxidation in ethylbenzenes and benzyl alcohol using gold supported on zinc oxide catalyst / Afiq Anwar Afiq , Anwar Q Science (General) QD Chemistry Gold nanoparticles of 3 nm supported on zinc oxide was synthesized by urea deposition precipitation then utilized as a catalyst in ethylbenzene and benzylalcohol oxidation using tert-butyl hydroperoxide as the oxidant in acetonitrile solvent. The catalyst gave more than 50% conversion and high selectivity towards acetophenone (50%) as the major product but moderate selectivity towards other products such as 1-phenylethanol, benzaldehyde, benzoic acid, and other compounds in 5 mL acetonitrile solvent at 100 °C for 24 hours reaction. The catalyst showed high selective for benzylalcohol oxidation with 60.3 % conversion and 100 % selectivity towards benzaldehyde. The fresh and spent catalysts were comprehensively characterized by XRD, HRTEM, XRF, BET and ATR-IR to correlate the catalyst activity. Factors affecting the catalytic activity in ethylbenzene oxidation such as gold loading, calcination treatment at 300 °C, type of solvent, reaction time, reaction temperature, oxidant to ethylbenzene molar ratio, catalyst weight and solvent volume were studied. The gold nanoparticle introduces a very selective reaction pathway and is an environmentally friendly catalyst as the oxidant used is less harmful. 2022-01 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/14296/1/Afiq_.pdf application/pdf http://studentsrepo.um.edu.my/14296/2/Afiq.pdf Afiq , Anwar (2022) Catalytic reaction of mediated oxidation in ethylbenzenes and benzyl alcohol using gold supported on zinc oxide catalyst / Afiq Anwar. Masters thesis, Universiti Malaya. http://studentsrepo.um.edu.my/14296/ |
| spellingShingle | Q Science (General) QD Chemistry Afiq , Anwar Catalytic reaction of mediated oxidation in ethylbenzenes and benzyl alcohol using gold supported on zinc oxide catalyst / Afiq Anwar |
| title | Catalytic reaction of mediated oxidation in ethylbenzenes and benzyl alcohol using gold supported on zinc oxide catalyst / Afiq Anwar |
| title_full | Catalytic reaction of mediated oxidation in ethylbenzenes and benzyl alcohol using gold supported on zinc oxide catalyst / Afiq Anwar |
| title_fullStr | Catalytic reaction of mediated oxidation in ethylbenzenes and benzyl alcohol using gold supported on zinc oxide catalyst / Afiq Anwar |
| title_full_unstemmed | Catalytic reaction of mediated oxidation in ethylbenzenes and benzyl alcohol using gold supported on zinc oxide catalyst / Afiq Anwar |
| title_short | Catalytic reaction of mediated oxidation in ethylbenzenes and benzyl alcohol using gold supported on zinc oxide catalyst / Afiq Anwar |
| title_sort | catalytic reaction of mediated oxidation in ethylbenzenes and benzyl alcohol using gold supported on zinc oxide catalyst / afiq anwar |
| topic | Q Science (General) QD Chemistry |
| url | http://studentsrepo.um.edu.my/14296/ http://studentsrepo.um.edu.my/14296/1/Afiq_.pdf http://studentsrepo.um.edu.my/14296/2/Afiq.pdf |