Kinetics and Mechanism of Nanoparticles-Catalyzed Piperidinolysis of Anionic Phenyl Salicylate
The values of the relative counterion (X) binding constant RXBr (=KX/KBr, where KX and KBr represent cetyltrimethylammonium bromide, CTABr, micellar binding constants of Xv- (in non-spherical micelles), v=1,2, and Br− (in spherical micelles)) are 58, 68, 127, and 125 for Xv−=1−, 12−, 2−, and 22-, r...
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/604139 |
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| author | Norazizah Abd. Razak M. Niyaz Khan |
| author_facet | Norazizah Abd. Razak M. Niyaz Khan |
| author_sort | Norazizah Abd. Razak |
| collection | DOAJ |
| description | The values of the relative counterion (X) binding constant RXBr (=KX/KBr, where KX and KBr represent cetyltrimethylammonium bromide, CTABr, micellar binding constants of Xv- (in non-spherical micelles), v=1,2, and Br− (in spherical micelles)) are 58, 68, 127, and 125 for Xv−=1−, 12−, 2−, and 22-, respectively. The values of 15 mM CTABr/[NavX] nanoparticles-catalyzed apparent second-order rate constants for piperidinolysis of ionized phenyl salicylate at 35°C are 0.417, 0.488, 0.926, and 0.891 M−1 s−1 for NavX = Na1, Na21, Na2, and Na22, respectively. Almost entire catalytic effect of nanoparticles catalyst is due to the ability of nonreactive counterions, Xv-, to expel reactive counterions, 3−, from nanoparticles to the bulk water phase. |
| format | Article |
| id | doaj-art-efa5b4d97fb44c79849ac4aa3fbe6bd8 |
| institution | OA Journals |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-efa5b4d97fb44c79849ac4aa3fbe6bd82025-08-20T02:22:05ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/604139604139Kinetics and Mechanism of Nanoparticles-Catalyzed Piperidinolysis of Anionic Phenyl SalicylateNorazizah Abd. Razak0M. Niyaz Khan1Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, MalaysiaDepartment of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, MalaysiaThe values of the relative counterion (X) binding constant RXBr (=KX/KBr, where KX and KBr represent cetyltrimethylammonium bromide, CTABr, micellar binding constants of Xv- (in non-spherical micelles), v=1,2, and Br− (in spherical micelles)) are 58, 68, 127, and 125 for Xv−=1−, 12−, 2−, and 22-, respectively. The values of 15 mM CTABr/[NavX] nanoparticles-catalyzed apparent second-order rate constants for piperidinolysis of ionized phenyl salicylate at 35°C are 0.417, 0.488, 0.926, and 0.891 M−1 s−1 for NavX = Na1, Na21, Na2, and Na22, respectively. Almost entire catalytic effect of nanoparticles catalyst is due to the ability of nonreactive counterions, Xv-, to expel reactive counterions, 3−, from nanoparticles to the bulk water phase.http://dx.doi.org/10.1155/2014/604139 |
| spellingShingle | Norazizah Abd. Razak M. Niyaz Khan Kinetics and Mechanism of Nanoparticles-Catalyzed Piperidinolysis of Anionic Phenyl Salicylate The Scientific World Journal |
| title | Kinetics and Mechanism of Nanoparticles-Catalyzed Piperidinolysis of Anionic Phenyl Salicylate |
| title_full | Kinetics and Mechanism of Nanoparticles-Catalyzed Piperidinolysis of Anionic Phenyl Salicylate |
| title_fullStr | Kinetics and Mechanism of Nanoparticles-Catalyzed Piperidinolysis of Anionic Phenyl Salicylate |
| title_full_unstemmed | Kinetics and Mechanism of Nanoparticles-Catalyzed Piperidinolysis of Anionic Phenyl Salicylate |
| title_short | Kinetics and Mechanism of Nanoparticles-Catalyzed Piperidinolysis of Anionic Phenyl Salicylate |
| title_sort | kinetics and mechanism of nanoparticles catalyzed piperidinolysis of anionic phenyl salicylate |
| url | http://dx.doi.org/10.1155/2014/604139 |
| work_keys_str_mv | AT norazizahabdrazak kineticsandmechanismofnanoparticlescatalyzedpiperidinolysisofanionicphenylsalicylate AT mniyazkhan kineticsandmechanismofnanoparticlescatalyzedpiperidinolysisofanionicphenylsalicylate |