Synthesis of Hydroxylamine Sulfate via NO Hydrogenation over Pt/Graphite Catalysts. I: Physicochemical State of Platinum Particles and the Surface of the Support in the Catalysts Full article
| Journal |
Catalysis in Industry
ISSN: 2070-0504 , E-ISSN: 2070-0555 |
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| Output data | Year: 2018, Volume: 10, Number: 4, Pages: 279-287 Pages count : 9 DOI: 10.1134/s2070050418040025 | ||||||
| Tags | platinum catalysts, surface chemistry, dispersity, preparation of catalysts, regeneration of catalysts, hydroxylamine synthesis | ||||||
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| Affiliations |
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Funding (2)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0004 |
| 2 | Federal Agency for Scientific Organizations | 0303-2016-0001 |
Abstract:
The physicochemical state of supported platinum and the surface of the support is studied for a number of industrial 0.5 wt % Pt/graphite (freshly prepared, after the synthesis of hydroxylamine sulfate via NO hydrogenation in sulfuric acid, and regenerated) by scanning electron microscopy (SEM), transmission electron microscopy(TEM), X-ray diffraction, X-ray photoelectron spectroscopy (XPS), and CO chemisorption. It is shown that platinum particles agglomerate in a catalyst during operation, and its regeneration results in finer dispersity of the supported metal. Despite the common opinion that a platinum surface is modified by sulfur during the synthesis or regeneration of such catalysts, no evidence of this is found via XPS. Data showing that the surface nitrogen-containing graphite groups formed during the preparation of a catalyst are responsible for the modification of the absorption properties of platinum particles with respect to CO are obtained for the first time. The latter seems to be one of the factors that influence the catalytic properties of platinum in NO hydrogenation.
Cite:
Bobrovskaya A.N.
, Simonov P.A.
, Bukhtiyarov A.V.
, Kvon R.I.
, Rudina N.A.
, Romanenko A.V.
, Khodorchenko V.M.
Synthesis of Hydroxylamine Sulfate via NO Hydrogenation over Pt/Graphite Catalysts. I: Physicochemical State of Platinum Particles and the Surface of the Support in the Catalysts
Catalysis in Industry. 2018. V.10. N4. P.279-287. DOI: 10.1134/s2070050418040025 WOS Scopus РИНЦ OpenAlex
Synthesis of Hydroxylamine Sulfate via NO Hydrogenation over Pt/Graphite Catalysts. I: Physicochemical State of Platinum Particles and the Surface of the Support in the Catalysts
Catalysis in Industry. 2018. V.10. N4. P.279-287. DOI: 10.1134/s2070050418040025 WOS Scopus РИНЦ OpenAlex
Original:
Бобровская А.Н.
, Симонов П.А.
, Бухтияров А.В.
, Квон Р.И.
, Рудина Н.А.
, Романенко А.В.
, Ходорченко В.М.
Получение сульфата гидроксиламина гидрированием NO на катализаторах Pt/графит: I. Физико-химическое состояние частиц платины и поверхности носителя в катализаторах
Катализ в промышленности. 2018. Т.18. №3. С.16-25. DOI: 10.18412/1816-0387-2018-3-16-25 РИНЦ AN OpenAlex
Получение сульфата гидроксиламина гидрированием NO на катализаторах Pt/графит: I. Физико-химическое состояние частиц платины и поверхности носителя в катализаторах
Катализ в промышленности. 2018. Т.18. №3. С.16-25. DOI: 10.18412/1816-0387-2018-3-16-25 РИНЦ AN OpenAlex
Dates:
| Submitted: | Jan 17, 2018 |
| Published print: | Oct 1, 2018 |
| Published online: | Jan 14, 2019 |
Identifiers:
| Web of science: | WOS:000455594600003 |
| Scopus: | 2-s2.0-85060172408 |
| Elibrary: | 38664480 |
| OpenAlex: | W2910123726 |