کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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67565 | 48487 | 2008 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Hydrolysis of benzoic anhydride mediated by ionenes and micelles Hydrolysis of benzoic anhydride mediated by ionenes and micelles](/preview/png/67565.png)
Micelle-mediated catalysis was compared to that of ionene polymers. Hexadecyltrimethylammonium bromide (CTABr) and benzyldimethylhexadecylammonium chloride (BDHA) were the surfactants employed and 2-hydroxy-3-ionene chloride (2-OH-33R) and poly[(dipropyliminium)-1,3-propanediyl bromide], 33R33, the tested ionenes. A modified Michaelis–Menten equation described the kinetics of ionene-mediated hydrolysis. The cationic polymer 2-hydroxy-3-ionene chloride proved to be the most efficient catalyst and a detailed mechanism is proposed for the reaction with benzoic anhydride (Bz2O) based on the kinetic evidence obtained. The catalytic efficiency follows the order 2-OH-33R > BDHA > 33R33 > CTABr.
Micellar catalysis of the hydrolysis of benzoic anhydride by hexadecyltrimethylammonium bromide (CTABr) and benzyldimethylhexadecylammonium chloride (BDHA) was compared with the ionene polymers, 2-hydroxy-3-ionene chloride (2-OH-33R) and poly[(dipropyliminium)-1,3-propanediyl bromide], 33R33. The ionene 2-OH-33R proved to be the most efficient catalyst and the catalytic efficiency follows the order 2-OH–33R > BDHA>33R33 > CTABr.Figure optionsDownload as PowerPoint slide
Journal: Journal of Molecular Catalysis A: Chemical - Volume 289, Issues 1–2, 17 June 2008, Pages 106–111