Acid-base and sorption properties of amorphous titanium phosphate |
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| Authors: | M. V. Maslova A. S. Chugunov L. G. Gerasimova N. V. Konovalova |
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| Affiliation: | 1. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Resources, Kola Scientific Center, Russian Academy of Sciences, Akademgorodok 26a, Apatity, Murmansk oblast, 184209, Russia
2. St. Petersburg State Institute of Technology (Technical University), Moskovskii pr. 26, St. Petersburg, 190013, Russia
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| Abstract: | Acid-base and sorption properties of amorphous titanium phosphate were studied. Three types of functional groups, H2PO 4 ? , HPO 4 2? , and OH?, with pK 2.79, 5.13, and 11.2, respectively, were revealed by potentiometric titration. The sorption recovery of double-charged metal cations was studied, and the selectivity series was found: Mg2+ < Ca2+ < Mn2+ < Ni2+ < Zn2+ < Cu2+ < Co2+. |
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