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- W4319601922 abstract "The porogens are the key components in the polymerization process, they do not participate in the polymerization reaction, but play a very important role in the pore structure of the synthetic polymers. Herein, o-xylene and paraffin were applied as the porogens and three acrylate-functionalized hyper-cross-linked polymers were fabricated according to the suspension polymerization and Friedel-Crafts reaction. The Brunauer-Emmett-Teller (BET) surface area (SBET) and pore volume (Vtotal) of the initial copolymers were nearly zero, while the Friedel-Crafts reaction resulted in a steep increase of the SBET and Vtotal. In particular, the resultant polymer, namely, HCP-PDVE-(Xy), using o-xylene as the porogen had the greatest SBET and Vtotal (1126 m2/g and 0.958 cm3/g, respectively), while the SBET and Vtotal of HCP-PDVE-(Lp) using paraffin as the porogen were the lowest (487 m2/g and 0.299 cm3/g, respectively). Meanwhile, HCP-PDVE-(Xy + Lp) using 50 % of o-xylene and 50 % of paraffin as the mixed porogens possessed the intermediate data. More importantly, HCP-PDVE-(Xy) had the hierarchical micro- and meso-porous distribution, while predominant micro-pores were distributed for HCP-PDVE-(Lp) and HCP-PDVE-(Xy + Lp). The equilibrium adsorption indicated that HCP-PDVE-(Xy + Lp) exhibited the largest equilibrium capacity (qe) to phenol while HCP-PDVE-(Xy) owned the largest qe to Rhodamine B. The phenol adsorption was subjected to the micro-pore filling mechanism while the high SBET, Vtotal and the hierarchical micro-/meso-pores were favorable for the adsorption of Rhodamine B. The kinetic adsorption revealed that HCP-PDVE-(Lp) and HCP-PDVE-(Xy + Lp) (20 min) required much less time than HCP-PDVE-(Xy) (50 min) to reach the equilibrium for the phenol adsorption, and the micro-pore diffusion model characterized the kinetic data very well. The dynamic adsorption indicated that the dynamic capacity of phenol adsorbed on HCP-PDVE-(Xy + Lp) was 160.2 mg/g, very close to the qe (163.6 mg/g) in the equilibrium adsorption." @default.
- W4319601922 created "2023-02-09" @default.
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- W4319601922 date "2023-04-01" @default.
- W4319601922 modified "2023-10-14" @default.
- W4319601922 title "Acrylate-functionalized hyper-cross-linked polymers: Effect of the porogens in the polymerization on their porosity and adsorption from aqueous solution" @default.
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- W4319601922 doi "https://doi.org/10.1016/j.seppur.2023.123380" @default.
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