Preparation of hypercrosslinked amine modification resin and its adsorption properties for nitroaromatics
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A nitrosation-reduction method had been applied for the modification of DCE-4 h. It was a kind of non-polar hypercrosslinked resin and synthesized by our group. The functional resin, NR-07, exhibited good adsorption performance for NACs (Nitroaromatics). The adsorption capacity of NR-07 for p-nitrobenzoic acid was almost 1.3 times as much as that of H-103 in 24 h. The adsorption rate of NR-07 calculated by the kinetic function was 1.6 times as much as that of DCE-4h. According to the EA analysis and IR spectrum, the amine and carbonyl group were introduced onto the polymer chains of NR-07. These hydrophilic chemical groups of NR-07 contributed to a higher liquid-film diffusion rate than that of DCE-4h. Besides, the pore volume within 0.46~4.3 nm increased after the modification process, which had a positive effect on the intra-particle diffusion process.
KeywordsFunctional resins Nitrosation Adsorption kinetics Fixed bed adsorption
The research was supported by The Taishan Scholars Projects of Shandong (no. ts501511033) and Natural Science Foundation of Shandong Province (ZR2016BQ39).
- Bajaj M. I.,Chattebjee S. B. 1966 Nitration of polystyrene part-I: effect of molecular weight of polymer on nitrationGoogle Scholar
- Bajaj M. I.,Chattebjee S. B. 1967 Nitration of polystyrene part-II: Effect of nitrating medium on nitrationGoogle Scholar
- Chen Z.-C., Le Z.-G., Hu Y.,Zheng Q.-G. 2004 Organic reactions in ionic liquids: N-alkylation of phthalimide and several nitrogen heterocycles. Synthesis(2), 208–212Google Scholar
- Daly WH, Lee S, Rungaroonthaikul C (1988) Modification of condensation. Polymers 364:4–23Google Scholar