Journal
CHEMICAL ENGINEERING JOURNAL
Volume 285, Issue -, Pages 554-561Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2015.10.032
Keywords
Polymeric ionic liquid; Porosity; Hypercross-linked; 4-Nitrophenol reduction; NaBH4; Catalytic lifetime
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Funding
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2014R1A2A2A01004352]
- Ministry of Education, Republic of Korea [2009-0093816]
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In this work, we synthesized hypercross-linked porous polystyrene (PS)/ionic liquid (IL) networks by Friedel Crafts alkylation reaction. The obtained porous polymer networks were confirmed by scanning electron microscopy, high resolution-transmission electron microscopy, Fourier-transform infrared spectra and energy-dispersive X-ray spectroscopy. The hypercross-linked porous PS/IL networks showed high surface area (541.13 m(2)/g) and hierarchical porosity compared with non-porous PS membranes (2.52 m(2)/g). The as-prepared hypercross-linked porous PS/IL networks were tested as a catalyst for the reduction of 4-nitrophenol (NP) in aqueous sodium borohydride (NaBH4) solution at ambient temperature. A number of parameters such as catalyst concentration, NaBH4 concentration, and recyclability was investigated for their effect on catalytic performance on the reduction of 4-NP. (C) 2015 Elsevier B.V. All rights reserved.
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