Homogeneous Redox Catalysts Based on Heteropoly Acid Solutions VI: Development of a Process for Low-Temperature CO Oxidation with Oxygen Full article
| Journal |
Catalysis in Industry
ISSN: 2070-0504 , E-ISSN: 2070-0555 |
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| Output data | Year: 2025, Volume: 17, Number: 1, Pages: 21-30 Pages count : 10 DOI: 10.1134/S2070050424700363 | ||
| Tags | homogeneous metal complex catalysis, platinum group metals, carbon monoxide, oxidation, heteropoly acid | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | FWUR-2024-0035 |
Abstract:
Studies on the development of a homogeneous process for the low-temperature oxidation of carbon monoxide in the presence of a platinum group metal + vanadium-containing heteropoly acid (HPA) catalyst system have been described. Optimum reaction conditions to provide the maximum rate of CO oxidation to CO2 have been determined, features of reaction kinetics have been found, and a mechanism has been proposed. It has been shown that systems based on a PdII aqua complex exhibit high activity and productivity; however, they have low stability and are used on stream only at a pH below 1.5. The stability of the catalyst can be increased by the simultaneous introduction of σ- and π-donor ligands into the system; however, the use of a PtIV complex in the presence of catalytic amounts of palladium salt in a ratio of 100/1 is more effective. Switching from HPA solutions with a low vanadium atom content (H7PMo8V4O40) to high-vanadium solutions of modified compositions (H10P3Mo18V7O84) provides an increase in the activity and productivity of the system, while the shapes of the kinetic curves and the general laws governing CO oxidation are preserved. The combined homogeneous PtIV + PdII + H10P3Mo18V7O84 catalyst remains stable during multicycle use without loss of activity, does not have an induction period in on-stream performance, and can be used at a pH of 0.7−2.5, which simplifies the hardware support of the process.
Cite:
Rodikova Y.A.
, Zhizhina E.G.
Homogeneous Redox Catalysts Based on Heteropoly Acid Solutions VI: Development of a Process for Low-Temperature CO Oxidation with Oxygen
Catalysis in Industry. 2025. V.17. N1. P.21-30. DOI: 10.1134/S2070050424700363 WOS OpenAlex
Homogeneous Redox Catalysts Based on Heteropoly Acid Solutions VI: Development of a Process for Low-Temperature CO Oxidation with Oxygen
Catalysis in Industry. 2025. V.17. N1. P.21-30. DOI: 10.1134/S2070050424700363 WOS OpenAlex
Original:
Родикова Ю.А.
, Жижина Е.Г.
Гомогенные катализаторы окислительно-восстановительных процессов на основе растворов гетерополикислот. VI. Разработка процесса низкотемпературного окисления со кислородом
Катализ в промышленности. 2024. Т.24. №5. С.3-13. DOI: 10.18412/1816-0387-2024-5-3-13 РИНЦ OpenAlex
Гомогенные катализаторы окислительно-восстановительных процессов на основе растворов гетерополикислот. VI. Разработка процесса низкотемпературного окисления со кислородом
Катализ в промышленности. 2024. Т.24. №5. С.3-13. DOI: 10.18412/1816-0387-2024-5-3-13 РИНЦ OpenAlex
Dates:
| Submitted: | Jan 17, 2024 |
| Accepted: | Feb 23, 2024 |
| Published online: | May 23, 2025 |
Identifiers:
| Web of science: | WOS:001494376100006 |
| OpenAlex: | W4410696839 |
Citing:
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