CATIONIC RING-OPENING POLYMERIZATION OF TETRAHYDROFURAN WITH KEGGIN-TYPE HETEROPOLYCOMPOUNDS AS SOLID ACID CATALYSTS

Ahmed Aouissi; Salim Salem Al-Deyab; Hassan Al-Shehri

doi:10.1007/s10118-010-9007-z

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CATIONIC RING-OPENING POLYMERIZATION OF TETRAHYDROFURAN WITH KEGGIN-TYPE HETEROPOLYCOMPOUNDS AS SOLID ACID CATALYSTS

Papers | Updated：2021-06-21

- CATIONIC RING-OPENING POLYMERIZATION OF TETRAHYDROFURAN WITH KEGGIN-TYPE HETEROPOLYCOMPOUNDS AS SOLID ACID CATALYSTS
- Vol. 28, Issue 3, Pages: 305-310(2010)
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- DOI：10.1007/s10118-010-9007-z
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- Published：20 May 2010
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Ahmed Aouissi, Salim Salem Al-Deyab, Hassan Al-Shehri. CATIONIC RING-OPENING POLYMERIZATION OF TETRAHYDROFURAN WITH KEGGIN-TYPE HETEROPOLYCOMPOUNDS AS SOLID ACID CATALYSTS[J]. 2010, 28(3): 305-310.
DOI：

Ahmed Aouissi, Salim Salem Al-Deyab, Hassan Al-Shehri. CATIONIC RING-OPENING POLYMERIZATION OF TETRAHYDROFURAN WITH KEGGIN-TYPE HETEROPOLYCOMPOUNDS AS SOLID ACID CATALYSTS[J]. 2010, 28(3): 305-310. DOI： 10.1007/s10118-010-9007-z.

摘要

Three Keggin-type heteropolyanions

namely H3PMo12O4013H2O

(NH4)3PMo12O404H2O and H3PW12O4013H2O were prepared and tested in the ring-opening polymerization reaction of tetrahydrofuran. The effects of the counter-cation (H+

NH4+) and the peripheral atoms (Mo

W) on the polymerization were investigated. It has been found that when the protons of H3PMo12O4013H2O were replaced by the ammonium cations the polymerization rate decreased dramatically. Whereas

when the peripheral atoms (Mo) were replaced by their homologous (W)

the polymerization rate increased twofold. As for the viscosity average molecular weight (Mv) of polymer products

it was found that the high molecular weight (7930) was obtained by using H3PW12O4013H2O. The molecular weight (Mv) obtained by H3PMo12O4013H2O and (NH4)3PMo12O404H2O was 6470 and 6810

respectively.

Abstract

Three Keggin-type heteropolyanions

namely H3PMo12O4013H2O

(NH4)3PMo12O404H2O and H3PW12O4013H2O were prepared and tested in the ring-opening polymerization reaction of tetrahydrofuran. The effects of the counter-cation (H+

NH4+) and the peripheral atoms (Mo

W) on the polymerization were investigated. It has been found that when the protons of H3PMo12O4013H2O were replaced by the ammonium cations the polymerization rate decreased dramatically. Whereas

when the peripheral atoms (Mo) were replaced by their homologous (W)

the polymerization rate increased twofold. As for the viscosity average molecular weight (Mv) of polymer products

it was found that the high molecular weight (7930) was obtained by using H3PW12O4013H2O. The molecular weight (Mv) obtained by H3PMo12O4013H2O and (NH4)3PMo12O404H2O was 6470 and 6810

respectively.

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