Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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UV-INDUCED POLYMERIZATION OF SIZE-CONTROLLED PLATINUM/POLY[STYRENE-DIVINYLBENZENE-TRI(PROPYLENE GLYCOL) DIACRYLATE] HYDROPHOBIC CATALYST BEADS IN MICROFLUIDICS

  • WEI, JUN (School of Nuclear Science and Technology, University of Science and Technology of China) ;
  • LI, XIANG (School of Nuclear Science and Technology, University of Science and Technology of China) ;
  • SONG, TONG (School of Nuclear Science and Technology, University of Science and Technology of China) ;
  • SONG, ZI-FAN (School of Nuclear Science and Technology, University of Science and Technology of China) ;
  • CHANG, ZHEN-QI (School of Nuclear Science and Technology, University of Science and Technology of China) ;
  • MENG, DA-QIAO (Si-Chuan Institute of Materials and Technology)
  • Received : 2015.01.12
  • Accepted : 2015.06.08
  • Published : 2015.12.25
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Abstract

The catalytic exchange of hydrogen isotopes between hydrogen and water has been known to be a very useful process for the separation of tritium from tritiated water. For the process, a highly active hydrophobic catalyst is needed. This study provides an effective fabrication method of size-controlled platinum/poly[styrene-divinylbenzene-tri(propylene glycol) diacrylate] [Pt/poly(SDB-TPGDA)] hydrophobic catalyst beads with a narrow size distribution. Platinum nanoparticles were prepared by ${\gamma}$-ray-induced reduction in the aqueous phase first, and then uniformly dispersed in SDB-TPGDA comonomer after the hydrophobization of platinum nanoparticles with alkylamine stabilizers. The porous Pt/poly(SDB-TPGDA) hydrophobic catalyst beads were synthesized by the UV-initiated polymerization of the mixture droplets prepared in a capillary-based microfluidic system. The size of as-prepared catalyst beads can be controlled in the range of $200-1,000{\mu}m$ by adjusting the flow rate of dispersed and continuous phases, as well as the viscosity of the continuous phase. Sorbitan monooleate and cyclohexanol were used as coporogens to control the porosities of the catalyst beads.

Keywords

Acknowledgement

Supported by : Ministry of Science and Technology, Nature Science Foundation of China

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