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Polymer supported reagents. III. Kinetic study of synthesizing n ‐octylacetate using insoluble titanium tetrachloride
Author(s) -
Balakrishnan T.,
Rajendran V.
Publication year - 2000
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/1097-4628(20001213)78:12<2075::aid-app30>3.0.co;2-q
Subject(s) - titanium tetrachloride , polymer , catalysis , peracetic acid , acetic acid , polymer chemistry , materials science , titanium , particle size , copolymer , styrene , reaction rate constant , kinetics , chemistry , chemical engineering , nuclear chemistry , organic chemistry , composite material , hydrogen peroxide , engineering , physics , quantum mechanics
Insoluble poly(4‐vinylpyridine‐ co ‐styrene) beads are prepared using divinylbenzene as the crosslinking agent. These polymer beads are converted into poly(4‐vinylpyridine‐ N ‐oxide) (PVPNO) under peracetic acid conditions. The resulting polymer is functionalized with titanium tetrachloride (TiCl 4 ) to afford the corresponding PVPNO‐TiCl 4 complex. This complex shows good catalytic activity for esterification reactions. The kinetics of formation of n ‐octylacetate from acetic acid and n ‐octanol is reported. The effects of stirring speed, reactant concentration, catalyst amount, percent crosslinking, particle size, and temperature on the conversion is investigated. The rate constants are found to increase with an increase in the stirring speed, concentration of n ‐octanol, catalyst amount, and temperature and decrease with an increasing percentage of crosslinking and the mesh size of the polymer beads. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 2075–2080, 2000