Scientific and Industrial Complex “Supermetal” JSC, Moscow, Russia

I. V. Boryagina, Junior Researcher, Postgraduate Student, e-mail: IrinaBoryagina@mail.ru

M. V. Lomonosov Moscow State Academy of Fine Chemical Technology, Moscow, Russia

E. V. Volchkova, Assistant Professor

T. M. Buslaeva, Professor

M. V. Vasileva, Specialist

M. V. Lomonosov Moscow State University, Moscow, Russia

G. V. Erlikh, Leading Researcher

This article considers the study of sorption of palladium (II), platinum (II), and platinum (IV), from the hydrochloric-acid solutions by chemically modified silica. Using the methods of infra-red and electronic spectroscopy, there were established such types of complexes, which are obtained in the phase of sorbent (silica, which is modified by the groups of γ- aminopropyltriethoxysilane), depending on the solution acidity. The hydrochloric-acid solutions of thiourea were proposed as the eluent. A sorption separation diagram for Pd (II) and Pt (IV) was proposed on the basis of the study.

1. Moskvin L. N., Tsaritsyna L. G. Metody razdeleniya i kontsentrirovaniya v analiticheskoy khimii (Methods of dividing and concentration in analytical chemistry). Leningrad : Khimiya, 1991. 256 p.
2. Lisichkin G. V., Fadeev G. V., Serdan A. A. et al. Khimiya privitykh poverkhnostnykh soedineniy (Chemistry of transplanted surface connections). Under the editorship of G. V. Lisichkin. Moscow : Fizmatlit, 2003. 592 p.
3. Simanova S. A., Burmistrova N. M., Afonin M. V. Rossiyskiy Khimicheskiy Zhurnal — Russian Journal of General Chemistry. 2006. Vol. 50, No. 4. pp. 19–25.
4. Ginzburg S. I. Analiticheskaya khimiya platinovykh metallov (Analytical chemistry of platinum metals). Moscow : Nauka, 1972. 616 p.
5. Buslaeva T. M., Simanova S. A. Koordinatsionnaya khimiya – Russian Journal of Coordination Chemistry. 1999. Vol. 25, No. 3. pp. 165–176.
6. Nakamoto K. Infrakrasnye spektry i spektry kombinatsionnogo rasseyaniya neorganicheskikh i koordinatsionnykh soedineniy (Infrared spectrum and spectrum of combination scattering of inorganic and coordination connections). Moscow : Mir, 1991. 504 p.
7. Losev V. N., Trofimchuk A. K., Bartsev V. M. Complexation of palladium and platinum on silica gel with grafted N-(2,6-dimethyl-4-methyltriphenylphosphonium chloride)-phenyl-N’-propylthiourea groups. Theoretical and Experimental Chemistry. 2000. Vol. 36, No. 3. pp. 173–177.
8. Simanova S. A., Kuznetsova T. V., Demidov V. N. et al. Zhurnal prikladnoy khimii – Russian Journal of Applied Chemistry. 2001. Vol. 74, No. 9. pp. 1401–1406.
9. Simanova S. A., Zamorova I. N., Kazakevich Yu. V. Zhurnal prikladnoy khimii — Russian Journal of Applied Chemistry. 1992. Vol. 65, Iss. 9. pp. 1987–1994.
10. Buslaeva T. M., Erlikh G. V., Lisichkin G. V. Sorbent na osnove modifitsirovannogo kremnezema i ego ispolzovanie (Sorbent on the basis of modificated silica and its application). Patent RF, No. 2354448. Published: May 10, 2009.
11. Volchkova E. V., Boryagina I. V., Mishchikhina E. A., Buslaeva T. M., Erlikh G. V., Lisichkin G. V. Sposob izvlecheniya palladiya (II) iz otrabotannykh katalizatorov (Method of extraction of palladium (II) from the processed catalysts). Patent RF, No. 2442833. Published: February 20, 2012. Bulletin No. 5.