Journal Article10.1002/PI.4980040506
The polymerisation of styrene on 13X zeolite
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TL;DR: In this paper, the polymerization of styrene on 13X zeolite at 30°C has been studied, and rates of monomer consumption were determined dilatometrically, and the molecular weight distributions of the product were investigated by gel permeation chromatography.
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Abstract: The polymerisation of styrene on 13X zeolite at 30°C has been studied. Rates of monomer consumption were determined dilatometrically, and the molecular weight distributions of the product were investigated by gel permeation chromatography. The effects of varying the weight of zeolite and the concentration of styrene were studied; the effects of preheating the zeolite samples to two different temperatures were also investigated. A cationic mechanism for the polymerisation is proposed; the initiation is on the zeolite surface and involves adsorbed water. The available space in the vicinity of the sites activated by water appears to determine the rate of propagation, and the molecular weight of the polymer.
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Citations
Molecular sieves as polymerization catalysts
Mukul Biswas,Narayan C. Maity +1 more
- 01 Jan 1979
TL;DR: Molecular sieves have potential uses as catalysts for vinyl polymerization reactions They have been widely used as cationic catalysts, and in a limited number of instances in anionic polymerisation reactions Molecular sieves also find uses as polymer modifiers bringing in definite improvements in their properties as discussed by the authors.
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Polymerization of cyclohexene oxide with Al(acac)3‐silanol catalyst supported by zeolite and porous silica
TL;DR: In this paper, the catalytic activity of cyclohexene oxide with Al(acac)3-silanol catalyst supported by zeolite and porous silica has been investigated.
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Polymerization of N-vinylcarbazole over cobalt (II) exchanged 13X molecular sieves
TL;DR: In this paper, N-vinyl carbazole over Co(II)-13X molecular sieves in toluene solution has been studied and the rate of polymerization has been observed to be second order both in monomer concentration and in the exchange level of Co( II), and linearly dependent on catalyst loading.
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Bernard V. Liengme,W.Keith Hall +1 more
TL;DR: In this paper, the infrared spectra of decationated X-and Y-type zeolites were analyzed for adsorption isotherms, calculated from the spectra and superimposed on those determined by volumetric techniques, showing that the strongest interaction was with the acidic hydroxyl groups and most of the adsorbed C2H4 was hydrogen-bonded to these.
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