TY - JOUR
T1 - Dechlorination of poly(vinyl chloride) by 1-butyl-3-methylimidazoliumhydroxide
AU - He, X.L.
AU - Zhou, Q.
AU - Li, X.Y.
AU - Yang, P.
AU - Kasteren, van, J.M.N.
AU - Wang, Y.Z.
PY - 2012
Y1 - 2012
N2 - Highly efficient dechlorination of PVC has been realized at 180 degrees C and at atmospheric pressure, using 1-butyl-3-methylimidazoliumhydroxide ([Bmim]OH) as an environment-friendly reaction medium: in the absence of an external base or solvent the dechlorination efficiency is as high as 91.2%, while it is only 38.1% for PVC without ionic liquids. The dechlorination process follows first-order kinetics with apparent activation energy of 44 kJ mol(-1). Mechanistic analysis provides evidence for the equilibrium presence of carbene species, together with the hydroxide ions in [Bmim]OH, thus enhancing the dechlorination of PVC via a combined elimination and substitution mechanism. (C) 2011 Elsevier Ltd. All rights reserved
AB - Highly efficient dechlorination of PVC has been realized at 180 degrees C and at atmospheric pressure, using 1-butyl-3-methylimidazoliumhydroxide ([Bmim]OH) as an environment-friendly reaction medium: in the absence of an external base or solvent the dechlorination efficiency is as high as 91.2%, while it is only 38.1% for PVC without ionic liquids. The dechlorination process follows first-order kinetics with apparent activation energy of 44 kJ mol(-1). Mechanistic analysis provides evidence for the equilibrium presence of carbene species, together with the hydroxide ions in [Bmim]OH, thus enhancing the dechlorination of PVC via a combined elimination and substitution mechanism. (C) 2011 Elsevier Ltd. All rights reserved
U2 - 10.1016/j.polymdegradstab.2011.11.005
DO - 10.1016/j.polymdegradstab.2011.11.005
M3 - Article
SN - 0141-3910
VL - 97
SP - 145
EP - 148
JO - Polymer Degradation and Stability
JF - Polymer Degradation and Stability
IS - 2
ER -