Carbon-Supported Iridium Catalyst for Reduction of Chlorate Ions with Hydrogen in Concentrated Solutions of Sodium Chloride Full article
| Journal |
Applied Catalysis A: General
ISSN: 0926-860X , E-ISSN: 1873-3875 |
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| Output data | Year: 2012, Volume: 427-428, Pages: 8-15 Pages count : 8 DOI: 10.1016/j.apcata.2012.03.024 | ||||
| Tags | Chlorate, Hydrogen, Ir/C catalyst, Reduction | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Aker Solutions |
Abstract:
In production of chlorine by electrolysis of NaCl, chlorate is formed as by-product and must be removed. The back conversion of ClO3− to Cl− via catalytic reduction with H2 on Ir catalyst in NaCl brine has been studied. The catalysts contained 0.5–5 wt.% of Ir and were prepared via impregnation of mesoporous carbon support (SibunitTM) with solutions of IrCl3·xHCl·yH2O or H2IrCl6 and reduction in flowing H2 at 400 or 500 ◦C. The Ir/C samples have been characterized with CO adsorption, XPS and HRTEM. The rate of ClO3− reduction in concentrated solutions of NaCl was found dependent on pH (in the range 2–6), content of Ir in the catalyst, dispersion and distribution of Ir on the support. The best properties have been shown by 5%Ir/C catalyst which was prepared with H2IrCl6 as the metal precursor and contained small Ir particles (∼1.5 nm in diameter) located inside the cavities of carbon globules. Stable catalytic performance in multiple successive runs has been achieved.
Cite:
Kuznetsova L.I.
, Kuznetsova N.I.
, Koscheev S.V.
, Zaikovskii V.I.
, Lisitsyn A.S.
, Kaprielova K.M.
, Kirillova N.V.
, Twardowski Z.
Carbon-Supported Iridium Catalyst for Reduction of Chlorate Ions with Hydrogen in Concentrated Solutions of Sodium Chloride
Applied Catalysis A: General. 2012. V.427-428. P.8-15. DOI: 10.1016/j.apcata.2012.03.024 WOS Scopus РИНЦ ANCAN OpenAlex
Carbon-Supported Iridium Catalyst for Reduction of Chlorate Ions with Hydrogen in Concentrated Solutions of Sodium Chloride
Applied Catalysis A: General. 2012. V.427-428. P.8-15. DOI: 10.1016/j.apcata.2012.03.024 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Jan 17, 2012 |
| Accepted: | Mar 15, 2012 |
| Published online: | Mar 28, 2012 |
| Published print: | Jun 1, 2012 |
Identifiers:
| Web of science: | WOS:000304692000002 |
| Scopus: | 2-s2.0-84860522195 |
| Elibrary: | 17984150 |
| Chemical Abstracts: | 2012:552235 |
| Chemical Abstracts (print): | 157:25016 |
| OpenAlex: | W2323202666 |