Determination of zinc glutarate complexes synthesis factors affecting production of propylene carbonate from carbon dioxide and propylene oxide

Rui Ren Ang, Lee Tin Sin, Soo Tueen Bee, Tiam Ting Tee, Abdul Amir H. Kadhum, A. R. Rahmat, Bilal A. Wasmi

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The purpose of this research was to investigate the effects of catalyst preparation temperature and time, and catalyst size in relation to the performance of the zinc glutarate (ZnGA) catalyst and the polypropylene carbonate (PPC) produced. Various ZnGA catalysts were synthesized at several combinations of temperature (40 °C, 50 °C, 60 °C and 70 °C) and time (3 h, 6 h and 9 h). The ZnGA were then used to copolymerize propylene oxide and carbon dioxide to produce PPC. It is found that the catalyst preparation temperature plays a dominant role in affecting the catalytic activity of the ZnGA. The ZnGA catalyst produced at higher temperature were found to possess higher crystallinity and capable to produce higher yield and selectivity PPC. However, the incorporation of glutaric acid into the catalyst is vital as well. Although some of the ZnGA exhibit high crystallinity, their low intensity of characteristic peaks of zinc-carboxylate bond (COO–) may causes low yield of PPC with byproducts. This is especially found on the catalysts synthesized at lower temperature (40 °C). Among the all the combinations of temperature and time, the ZnGA prepared using 9 h at 70 °C possess the highest crystallinity (42.52%) and has the best incorporation of GA (1.24 a.u.). It is capable of producing PPC with high molecular weight (97,100 Da) and narrow PDI (1.28), high crystallinity (23.44%), high and narrow Tm at 244 °C with excellent mechanical properties (tensile strength of 8.48 MPa, tensile elongation >400%, and Young's modulus of 748.7 MPa).

Original languageEnglish
Pages (from-to)120-127
Number of pages8
JournalChemical Engineering Journal
Volume327
DOIs
Publication statusPublished - 1 Nov 2017

Fingerprint

Glutarates
Carbon Dioxide
Propylene
Zinc
Carbonates
Carbon dioxide
carbon dioxide
zinc
catalyst
oxide
carbonate
Catalysts
Oxides
Polypropylenes
crystallinity
Temperature
temperature
propylene oxide
propylene carbonate
Young modulus

Keywords

  • Carbon dioxide
  • Polypropylene carbonate
  • Zinc glutarate

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

Determination of zinc glutarate complexes synthesis factors affecting production of propylene carbonate from carbon dioxide and propylene oxide. / Ang, Rui Ren; Sin, Lee Tin; Bee, Soo Tueen; Tee, Tiam Ting; Kadhum, Abdul Amir H.; Rahmat, A. R.; Wasmi, Bilal A.

In: Chemical Engineering Journal, Vol. 327, 01.11.2017, p. 120-127.

Research output: Contribution to journalArticle

Ang, Rui Ren ; Sin, Lee Tin ; Bee, Soo Tueen ; Tee, Tiam Ting ; Kadhum, Abdul Amir H. ; Rahmat, A. R. ; Wasmi, Bilal A. / Determination of zinc glutarate complexes synthesis factors affecting production of propylene carbonate from carbon dioxide and propylene oxide. In: Chemical Engineering Journal. 2017 ; Vol. 327. pp. 120-127.
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AB - The purpose of this research was to investigate the effects of catalyst preparation temperature and time, and catalyst size in relation to the performance of the zinc glutarate (ZnGA) catalyst and the polypropylene carbonate (PPC) produced. Various ZnGA catalysts were synthesized at several combinations of temperature (40 °C, 50 °C, 60 °C and 70 °C) and time (3 h, 6 h and 9 h). The ZnGA were then used to copolymerize propylene oxide and carbon dioxide to produce PPC. It is found that the catalyst preparation temperature plays a dominant role in affecting the catalytic activity of the ZnGA. The ZnGA catalyst produced at higher temperature were found to possess higher crystallinity and capable to produce higher yield and selectivity PPC. However, the incorporation of glutaric acid into the catalyst is vital as well. Although some of the ZnGA exhibit high crystallinity, their low intensity of characteristic peaks of zinc-carboxylate bond (COO–) may causes low yield of PPC with byproducts. This is especially found on the catalysts synthesized at lower temperature (40 °C). Among the all the combinations of temperature and time, the ZnGA prepared using 9 h at 70 °C possess the highest crystallinity (42.52%) and has the best incorporation of GA (1.24 a.u.). It is capable of producing PPC with high molecular weight (97,100 Da) and narrow PDI (1.28), high crystallinity (23.44%), high and narrow Tm at 244 °C with excellent mechanical properties (tensile strength of 8.48 MPa, tensile elongation >400%, and Young's modulus of 748.7 MPa).

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