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Designing efficient metal complex catalysts for acylation: A comparative study with soluble and insoluble catalysts systems

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Title Designing efficient metal complex catalysts for acylation: A comparative study with soluble and insoluble catalysts systems
 
Creator Murugan, E
Arunachalam, P
 
Subject Antimony pentachloride
Insoluble catalysts
Molybdenum pentachloride
Niobium pentachloride
Tantalum pentachloride
 
Description 635-646
New soluble and insoluble Nb, Ta, Mo, and Sb complex catalysts have been developed using pyridine and polymersupported
cross-linked (poly-4-vinyl pyridine) bead (PSCPVP), and characterized using FT-IR, SEM, EDAX, elemental
analysis (CHN), and TGA. Their ability to catalyze the acylation of ethanol with acetic anhydride at 303K has been proven.
Both soluble and insoluble chemicals have the same order of activity: MoCl5, TaCl5, NbCl5, and SbCl5. The insoluble
catalyst outperformed in terms of activity by complex catalysts, although they have significant limitations in terms of
solubility and recyclability and soluble homogeneous catalysts in terms of lowest cost and recyclability, whereas all soluble
Py-MCl5 catalysts exhibit better activity than insoluble PSCPVP-MCl5 catalysts according to the computed kobs values.
Insoluble catalysts are preferable than soluble homogeneous catalysts in terms of recyclability, although all the soluble
catalysts of Py-MCl5, M= Nb, Ta, Mo, and Sb have exhibited better activity than insoluble PSCPVP-MCl5 (kobs= 6.51, 6.98,
7.48 & 1.73 x103 min-1) based on the computed kobs values. For acylation process, it has been found that the soluble Py-
NbCl5, Py-TaCl5, Py-MoCl5, and Py-SbCl5 catalysts whereas 1.47, 1.63, 1.59, and 1.67 folds more active than PSCPVPNbCl5,
PSCPVP-TaCl5, PSCPVP-MoCl5, and PSCPVP-SbCl5 correspondingly.
 
Date 2022-11-18T12:06:23Z
2022-11-18T12:06:23Z
2022-11
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/60852
https://doi.org/10.56042/ijct.v29i6.67397
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJCT Vol.29(6) [November 2022]