2006
DOI: 10.1016/j.jallcom.2004.11.092
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Separation of rare earths in nitric acid medium by a novel silica-based pyridinium anion exchange resin

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Cited by 26 publications
(9 citation statements)
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“…The composite support (SiO 2 -P) with mean diameter of 50-100 μm (0.6 μm pore size, and 0.69 pore fraction) was obtained by copolymerization of styrene with divinylbenzene (SDB) and immobilized on SiO 2 particles (silica content was close to 17-18 wt%) [36,37]. One hundred g of silica particles was placed in a rotary evaporator flask and dried in vacuum for 60 min (under a pressure lower than 3000 Pa); air was then purged with a N 2 stream for 30 min.…”
Section: Preparation Of Pan/sio 2 Resinmentioning
confidence: 99%
“…The composite support (SiO 2 -P) with mean diameter of 50-100 μm (0.6 μm pore size, and 0.69 pore fraction) was obtained by copolymerization of styrene with divinylbenzene (SDB) and immobilized on SiO 2 particles (silica content was close to 17-18 wt%) [36,37]. One hundred g of silica particles was placed in a rotary evaporator flask and dried in vacuum for 60 min (under a pressure lower than 3000 Pa); air was then purged with a N 2 stream for 30 min.…”
Section: Preparation Of Pan/sio 2 Resinmentioning
confidence: 99%
“…Due to the partial nitrogen electron delocalization nature, the pyridinium group containing anion exchange membranes exhibited enhanced chemical and oxidative stability in acid medium compared to quaternary ammonium groups. [30][31][32] In our previous works, a series of chloromethylated poly(phthalazinone ether)s were synthesized, and membranes with quaternary ammonium groups for VRB applications were prepared. [22][23][24]33,34 The resulting anion exchange membranes exhibited promising performances and lower permeability of vanadium ions in VRB.…”
Section: Introductionmentioning
confidence: 99%
“…There are many reports on chromatographic techniques describing the separation of samarium and neodymium. Some of the recent results on samarium and neodymium separation by chromatographic techniques have been reported by Stray and Dahlgren, 6 Arai et al, 7 Miranda Jr. et al, 8 Pin et al, 9 Schwantes et al, 10 Tsuyoshi and Akiba, 11 etc. However, the chromatographic methods require exhaustive instrumentation, chemical treatment and are time consuming.…”
Section: Introductionmentioning
confidence: 91%