Synthesis and Catalytic Activity of Porous Blocked Ag/SiO2 Composites in Low-Temperature Carbon Monoxide Oxidation Full article
| Journal |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2013, Volume: 54, Number: 4, Pages: 492-496 Pages count : 5 DOI: 10.1134/S0023158413040150 | ||||||||
| Tags | Silver Particle; Average Pore Size; Transmission Electron Microscopy Data; Ammonium Complex; Polyol Synthesis | ||||||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Russian Foundation for Basic Research | 11-03-90715 |
| 2 | The Ministry of Education and Science of the Russian Federation | 16.513.11.3013 |
Abstract:
The Ag/SiO2 composites were synthesized based on porous blocked silica with a pore size of 30–50 nm and a specific surface area of 99 m2/g. Silver particles were introduced into the pores of the support by its impregnation with a solution of an ammonium complex of silver followed by reduction with hydrogen. The liquid-phase reduction of silver ions in pores was performed in the absence of stabilizing agents with the use of ethylene glycol (a polyol method) or formamide as a reducing agent. The methods used in the preparation of composites made it possible to vary the particle size of silver. The greatest size that is almost comparable with the pore size was achieved with the use of formamide. The catalytic activity of the Ag/SiO2 composites was studied in the reaction of CO oxidation. It was found that the catalysts obtained upon the reduction of Ag+ ions by formamide exhibited considerable low-temperature activity. A necessary condition for the manifestation of low-temperature activity is redox treatment, in the course of which the particle size of silver considerably decreases.
Cite:
Martynova D.O.
, Kibis L.S.
, Stonkus O.A.
, Vodyankina O.V.
, Izaak T.I.
, Slavinskaya E.M.
, Boronin A.I.
Synthesis and Catalytic Activity of Porous Blocked Ag/SiO2 Composites in Low-Temperature Carbon Monoxide Oxidation
Kinetics and Catalysis. 2013. V.54. N4. P.492-496. DOI: 10.1134/S0023158413040150 WOS Scopus РИНЦ ANCAN OpenAlex
Synthesis and Catalytic Activity of Porous Blocked Ag/SiO2 Composites in Low-Temperature Carbon Monoxide Oxidation
Kinetics and Catalysis. 2013. V.54. N4. P.492-496. DOI: 10.1134/S0023158413040150 WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Мартынова Д.О.
, Кибис Л.С.
, Стонкус О.А.
, Водянкина О.В.
, Изаак Т.И.
, Славинская Е.М.
, Боронин А.И.
Синтез и каталитическая активность блочных пористых композитов Ag/SiO2 в низкотемпературной реакции окисления CO
Кинетика и катализ. 2013. Т.54. №4. С.519-523. DOI: 10.7868/S0453881113040151 РИНЦ OpenAlex
Синтез и каталитическая активность блочных пористых композитов Ag/SiO2 в низкотемпературной реакции окисления CO
Кинетика и катализ. 2013. Т.54. №4. С.519-523. DOI: 10.7868/S0453881113040151 РИНЦ OpenAlex
Dates:
| Submitted: | Dec 3, 2012 |
| Published print: | Jul 1, 2013 |
| Published online: | Jul 24, 2013 |
Identifiers:
| Web of science: | WOS:000322183000016 |
| Scopus: | 2-s2.0-84887457851 |
| Elibrary: | 21466124 |
| Chemical Abstracts: | 2013:1156170 |
| Chemical Abstracts (print): | 161:604908 |
| OpenAlex: | W2022343537 |