Selective oxidation of cumene into 2-phenyl-2-propanol and acetophenone over activated carbon supported Co1.5PW12O40 material
This article reports the oxidation of cumene by H _2 O _2 in the presence of CO _2 . It describes the role played by carbon dioxide on the course of the reaction. The reaction was catalyzed by unsupported Co _1.5 PW _12 O _40 and supported on activated carbon. The prepared materials were characteriz...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ab7268 |
| _version_ | 1797746513104863232 |
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| author | Naaser A Y Abduh Tahani Al-Garni Abdullah Al Kahtani Ahmed Aouissi |
| author_facet | Naaser A Y Abduh Tahani Al-Garni Abdullah Al Kahtani Ahmed Aouissi |
| author_sort | Naaser A Y Abduh |
| collection | DOAJ |
| description | This article reports the oxidation of cumene by H _2 O _2 in the presence of CO _2 . It describes the role played by carbon dioxide on the course of the reaction. The reaction was catalyzed by unsupported Co _1.5 PW _12 O _40 and supported on activated carbon. The prepared materials were characterized by ICP, IR, XRD and UV. Analysis of the reaction products by gas chromatography coupled with mass spectrometry and gas chromatography showed that 2-phenyl-2-propanol and acetophenone were the main products of the reaction. Activated carbon significantly increases conversion by increasing Co _1.5 PW _12 O _40 accessibility to cumene molecules. The improvement in the conversion and selectivities of 2-phenyl-2-propanol and acetophenone by the use of the oxidizing system H _2 O _2 /CO _2 compared to the use of H _2 O _2 alone or CO _2 alone is due to the role of the percarbonate entity ${{\rm{HCO}}}_{4}^{-}$ formed by reaction between H _2 O _2 and CO _2 . Oxidation by large amounts of H _2 O _2 decreases the conversion by decreasing the solubility of cumene in the resulting aqueous medium. An increase in the reaction time resulting in a decrease in the concentration of H _2 O _2 and leaving the effect of the predominant CO _2 accentuates the cracking reactions. |
| first_indexed | 2024-03-12T15:37:54Z |
| format | Article |
| id | doaj.art-0654fc158ce74faaa7856e0338c8a4f7 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:37:54Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-0654fc158ce74faaa7856e0338c8a4f72023-08-09T16:06:57ZengIOP PublishingMaterials Research Express2053-15912020-01-017202560610.1088/2053-1591/ab7268Selective oxidation of cumene into 2-phenyl-2-propanol and acetophenone over activated carbon supported Co1.5PW12O40 materialNaaser A Y Abduh0Tahani Al-Garni1Abdullah Al Kahtani2Ahmed Aouissi3https://orcid.org/0000-0001-9035-8660Department of Chemistry, College of Science, King Saud University , P O Box 2455, Riyadh 11451, Saudi ArabiaDepartment of Chemistry, College of Science, King Saud University , P O Box 2455, Riyadh 11451, Saudi ArabiaDepartment of Chemistry, College of Science, King Saud University , P O Box 2455, Riyadh 11451, Saudi ArabiaDepartment of Chemistry, College of Science, King Saud University , P O Box 2455, Riyadh 11451, Saudi ArabiaThis article reports the oxidation of cumene by H _2 O _2 in the presence of CO _2 . It describes the role played by carbon dioxide on the course of the reaction. The reaction was catalyzed by unsupported Co _1.5 PW _12 O _40 and supported on activated carbon. The prepared materials were characterized by ICP, IR, XRD and UV. Analysis of the reaction products by gas chromatography coupled with mass spectrometry and gas chromatography showed that 2-phenyl-2-propanol and acetophenone were the main products of the reaction. Activated carbon significantly increases conversion by increasing Co _1.5 PW _12 O _40 accessibility to cumene molecules. The improvement in the conversion and selectivities of 2-phenyl-2-propanol and acetophenone by the use of the oxidizing system H _2 O _2 /CO _2 compared to the use of H _2 O _2 alone or CO _2 alone is due to the role of the percarbonate entity ${{\rm{HCO}}}_{4}^{-}$ formed by reaction between H _2 O _2 and CO _2 . Oxidation by large amounts of H _2 O _2 decreases the conversion by decreasing the solubility of cumene in the resulting aqueous medium. An increase in the reaction time resulting in a decrease in the concentration of H _2 O _2 and leaving the effect of the predominant CO _2 accentuates the cracking reactions.https://doi.org/10.1088/2053-1591/ab7268activated carboncarbon dioxidepolyoxometalateshydrogen peroxidecumene |
| spellingShingle | Naaser A Y Abduh Tahani Al-Garni Abdullah Al Kahtani Ahmed Aouissi Selective oxidation of cumene into 2-phenyl-2-propanol and acetophenone over activated carbon supported Co1.5PW12O40 material Materials Research Express activated carbon carbon dioxide polyoxometalates hydrogen peroxide cumene |
| title | Selective oxidation of cumene into 2-phenyl-2-propanol and acetophenone over activated carbon supported Co1.5PW12O40 material |
| title_full | Selective oxidation of cumene into 2-phenyl-2-propanol and acetophenone over activated carbon supported Co1.5PW12O40 material |
| title_fullStr | Selective oxidation of cumene into 2-phenyl-2-propanol and acetophenone over activated carbon supported Co1.5PW12O40 material |
| title_full_unstemmed | Selective oxidation of cumene into 2-phenyl-2-propanol and acetophenone over activated carbon supported Co1.5PW12O40 material |
| title_short | Selective oxidation of cumene into 2-phenyl-2-propanol and acetophenone over activated carbon supported Co1.5PW12O40 material |
| title_sort | selective oxidation of cumene into 2 phenyl 2 propanol and acetophenone over activated carbon supported co1 5pw12o40 material |
| topic | activated carbon carbon dioxide polyoxometalates hydrogen peroxide cumene |
| url | https://doi.org/10.1088/2053-1591/ab7268 |
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