Journals →  Tsvetnye Metally →  2013 →  #1 →  Back

MAGNESIUM, TITANIUM, RARE METALS, SEMICONDUCTORS
ArticleName Extraction of rhenium and platinum from the dead reforming catalyst by electrochemical hydrochlorination
ArticleAuthor Chernyshova O. V., Chernyshov V. I.
ArticleAuthorData

Chair of Chemistry and Technology of Rare and Scattered Metals named after K. A. Bolshakov, Lomonosov Moscow University of Fine Chemical Technology, Moscow, Russia

O. V. Chernyshova, Assistant Professor, e-mail: oxcher@mail.ru

 

Innovation Enterprise “TETRAN” LLC, Moscow, Russia

V. I. Chernyshov, Chief Executive Officer

Abstract

The behaviors of platinum, rhenium and dead catalysts KR-108 (TS 2177-019-04610600–99) in hydrochloric solutions have been investigated. The unique construction of an electrochemical set for the processing of dead reforming catalysts, permitting to produce the chlorinating agent “in situ” (directly in technological process) and extract platinum and rhenium simultaneously, have been developed and introduced into the research process. Experiments with use of the burnt and not burnt catalysts, and also in addition subjected to crushing have been conducted. The degree of extraction of valuable components for the burnt and not burnt catalyst are practically equal (platinum — 87.2%, rhenium — 84.1% and platinum — 89.1%, rhenium – 87.5% accordingly), however for processing of the burnt catalysts are necessary more long time of their finding in a reactionary zone on 8–10 hours. Dependence of degree of extraction on time of process of electrochemical hydrochlorination has been received. It has been established, that crushing of the catalyst till the size of particles of an order of 0.1 mm allows to raise extraction degree: platinum — 98.2%, rhenium — 91.4%. Solubility of a basis of the crushed catalyst at electrochemical hydrochlorination has been investigated. It has been shown, that use of the cathode with the developed surface on the basis of graphite materials allows reaching residual concentration of platinum and rhenium to concentration in some milligramme and less. The technological scheme of processing of the dead reforming catalyst via electrochemical hydrochlorination, by which metal concentrate containing rhenium and platinum is formed, has been suggested.

keywords Catalysts, platinum, rhenium, processing, electrochemical hydrochlorination, electrochemical allocation
References

1. Naumov A. V. Izvestiya vuzov. Tsvetnaya metallurgiya – Russian Journal of Non-Ferrous Metals. 2007. No. 6. pp. 36–41.
2. Ryashentseva M. A., Minachev Kh. M. Reniy i ego soedineniya v geterogennom katalize (Rhenium and its compounds in heterogenous catalysis). Moscow : Nauka, 1983. 248 p.
3. Bregeault J., El Ali B., Martin J., Martin C., Derdar F., Bugli G., Delamar M. Novel rhenium catalysts (chlorides and / or alkoxides dispersed on inorganic supports) for metathesis: a comparison with ammonium perrenate precursors. Journal of Molecular Catalysis. 1988. No. 46. pp. 37–60.
4. Rodionov Yu. M., Slyusarenko E. M., Lunin V. V. Uspekhi khimii — Russian Chemical Reviews. 1996. Vol. 65, No. 9. pp. 865–879.
5. Schwarh P., Durkheim B., Breitscheidel B., Schulz R., Schulz M., Muller U. Methathesis catalyst, and its preparation and use. Patent US, No. 6130181. Published : October 10, 2010.
6. Ivashtsev Ya. I., Nechepurenko A. V. Izvestiya vuzov. Tsvetnaya metallurgiya — Russian Journal of Non-Ferrous Metals. 1976. No. 3. pp. 87–90.
7. Ivashtsev Ya. I., Nechepurenko A. V. Izvestiya vuzov. Tsvetnaya metallurgiya — Russian Journal of Non-Ferrous Metals. 1976. No. 3. p. 143–145.
8. Daurenbekov B., Sokolskiy D. V., Popova N. M., Dorfman Ya. A. Izvestiya Akademii Nauk Kazakhskoy SSR. Seriya Khimicheskaya — Bulletin of Academy of Sciences of Kazakhstan SSR. 1972. No. 3. pp. 6–9.
9. Spektor O. V., Ryumin A. I., Pochekutova M. G. Tsvetnye Metally — Non-ferrous metals. 1998. No. 7. pp. 37–39.
10. Bukhichin E. P., Kuznetsov A. Yu., Chekmarev A. M., Utkina L. V. Izvestiya vuzov. Tsvetnaya metallurgiya — Russian Journal of Non-Ferrous Metals. 1999. No. 2. pp. 26–29.
11. Belov S. F., Igumnov M. S., Lovchinovskiy I. Yu. Tsvetnye Metally — Non-ferrous metals. 1997. No. 5. pp. 46–48.
12. Borbat V. F., Korneeva I. N., Adeeva L. N., Belyy A. S. Izvestiya vuzov. Khimiya i khimicheskaya tekhnologiya — Proceedings of universities. Chemistry and chemical technology. 1999. Vol. 42, Iss. 2. pp. 46–49.
13. Borbat V. F., Korneeva I. N., Adeeva L. N. Izvestiya vuzov. Khimiya i khimicheskaya tekhnologiya — Proceedings of universities. Chemistry and chemical technology. 2002. Vol. 45, Iss. 2. pp. 42–44.
14. Joyner R. W., Shpiro E. S. Alloying in platinum catalysts for gasoline reforming. Catalysis Letters. 1991. Vol. 9, No. 3/4. pp. 239–243.
15. Chernyshova O. V., Drobot D. V., Chernyshov V. I. Rossiyskiy khimicheskiy zhurnal — Russian Journal of General Chemistry. 2006. No. 4. pp. 13–19.
16. Spravochnik po rastvorimosti. Binarnye sistemy. Kniga 1 (Solubility reference book. Binary systems. Book 1). Editorin-chief V. V. Kafarov. Moscow, Leningrad : Publishing House of USSR Academy of Sciences, 1961. Vol. 1. 960 p.

Language of full-text russian
Full content Buy
Back