CuFeAl Nanocomposite Catalysts for Coal Combustion in Fluidized Bed
A method of oil-drop granulation was suggested for the preparation of spherical CuFeAl nanocomposite catalysts. The catalysts were characterized by a set of physicochemical methods (X-ray diffraction, temperature-programmed reduction by H<sub>2</sub>, low-temperature nitrogen adsorption,...
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| Format: | Article |
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MDPI AG
2020-05-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/10/5/1002 |
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| author | Aleksandr V. Fedorov Nikolay A. Yazykov Olga A. Bulavchenko Andrey A. Saraev Vasily V. Kaichev Vadim A. Yakovlev |
| author_facet | Aleksandr V. Fedorov Nikolay A. Yazykov Olga A. Bulavchenko Andrey A. Saraev Vasily V. Kaichev Vadim A. Yakovlev |
| author_sort | Aleksandr V. Fedorov |
| collection | DOAJ |
| description | A method of oil-drop granulation was suggested for the preparation of spherical CuFeAl nanocomposite catalysts. The catalysts were characterized by a set of physicochemical methods (X-ray diffraction, temperature-programmed reduction by H<sub>2</sub>, low-temperature nitrogen adsorption, crushing strength) and tested in the oxidation of CO and burning of brown coal in a fluidized bed. It was found that the catalysts have high mechanical strength (16.2 MPa), and their catalytic properties in the oxidation of CO are comparable to the characteristics of industrial Cr-containing catalysts. It was shown that the addition of pseudoboehmite at the stage of drop formation contributes to the production of uniform spherical high-strength granules and facilitates the stabilization of the phase state of the active component. The use of CuFeAl nanocomposite catalysts for the burning of brown coal provides a low emission of CO (600 ppm) and NO<i><sub>x</sub></i> (220 ppm) and a high degree of coal burnout (95%), which are close to those of the industrial Cr-containing catalysts (emission of CO is 700 ppm, NO<i><sub>x</sub></i>—230 ppm, and degree of coal burnout is 95%). |
| first_indexed | 2024-03-10T19:38:12Z |
| format | Article |
| id | doaj.art-f6bbec9dd9f94db7aea7f606eeee4d3e |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T19:38:12Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-f6bbec9dd9f94db7aea7f606eeee4d3e2023-11-20T01:33:30ZengMDPI AGNanomaterials2079-49912020-05-01105100210.3390/nano10051002CuFeAl Nanocomposite Catalysts for Coal Combustion in Fluidized BedAleksandr V. Fedorov0Nikolay A. Yazykov1Olga A. Bulavchenko2Andrey A. Saraev3Vasily V. Kaichev4Vadim A. Yakovlev5Boreskov Institute of Catalysis, Lavrentev Ave., 5, 630090 Novosibirsk, RussiaBoreskov Institute of Catalysis, Lavrentev Ave., 5, 630090 Novosibirsk, RussiaBoreskov Institute of Catalysis, Lavrentev Ave., 5, 630090 Novosibirsk, RussiaBoreskov Institute of Catalysis, Lavrentev Ave., 5, 630090 Novosibirsk, RussiaBoreskov Institute of Catalysis, Lavrentev Ave., 5, 630090 Novosibirsk, RussiaBoreskov Institute of Catalysis, Lavrentev Ave., 5, 630090 Novosibirsk, RussiaA method of oil-drop granulation was suggested for the preparation of spherical CuFeAl nanocomposite catalysts. The catalysts were characterized by a set of physicochemical methods (X-ray diffraction, temperature-programmed reduction by H<sub>2</sub>, low-temperature nitrogen adsorption, crushing strength) and tested in the oxidation of CO and burning of brown coal in a fluidized bed. It was found that the catalysts have high mechanical strength (16.2 MPa), and their catalytic properties in the oxidation of CO are comparable to the characteristics of industrial Cr-containing catalysts. It was shown that the addition of pseudoboehmite at the stage of drop formation contributes to the production of uniform spherical high-strength granules and facilitates the stabilization of the phase state of the active component. The use of CuFeAl nanocomposite catalysts for the burning of brown coal provides a low emission of CO (600 ppm) and NO<i><sub>x</sub></i> (220 ppm) and a high degree of coal burnout (95%), which are close to those of the industrial Cr-containing catalysts (emission of CO is 700 ppm, NO<i><sub>x</sub></i>—230 ppm, and degree of coal burnout is 95%).https://www.mdpi.com/2079-4991/10/5/1002catalytic combustionfluidized bedCO oxidationoil-drop granulationiron oxidecopper oxide |
| spellingShingle | Aleksandr V. Fedorov Nikolay A. Yazykov Olga A. Bulavchenko Andrey A. Saraev Vasily V. Kaichev Vadim A. Yakovlev CuFeAl Nanocomposite Catalysts for Coal Combustion in Fluidized Bed Nanomaterials catalytic combustion fluidized bed CO oxidation oil-drop granulation iron oxide copper oxide |
| title | CuFeAl Nanocomposite Catalysts for Coal Combustion in Fluidized Bed |
| title_full | CuFeAl Nanocomposite Catalysts for Coal Combustion in Fluidized Bed |
| title_fullStr | CuFeAl Nanocomposite Catalysts for Coal Combustion in Fluidized Bed |
| title_full_unstemmed | CuFeAl Nanocomposite Catalysts for Coal Combustion in Fluidized Bed |
| title_short | CuFeAl Nanocomposite Catalysts for Coal Combustion in Fluidized Bed |
| title_sort | cufeal nanocomposite catalysts for coal combustion in fluidized bed |
| topic | catalytic combustion fluidized bed CO oxidation oil-drop granulation iron oxide copper oxide |
| url | https://www.mdpi.com/2079-4991/10/5/1002 |
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