Low-temperature oxidative removal of gaseous formaldehyde by an eggshell waste supported silver-manganese dioxide bimetallic catalyst with ultralow noble metal content
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Low-temperature oxidative removal of gaseous formaldehyde by an eggshell waste supported silver-manganese dioxide bimetallic catalyst with ultralow noble metal content
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| Автор |
Vikrant, K.
Kim, K. -H. Dong, F. Heynderickx, P. M. Boukhvalov, D. W. |
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| Тематика |
CATALYTIC OXIDATION
FORMALDEHYDE INDOOR AIR SOLID BIOWASTE VOLATILE ORGANIC COMPOUNDS ANIMALS CATALYSIS EGG SHELL FORMALDEHYDE GASES HYDROGEN MANGANESE COMPOUNDS OXIDATIVE STRESS OXIDES OXYGEN SILVER TEMPERATURE CALCIUM CARBONATE CATALYSTS CATALYTIC OXIDATION FORMALDEHYDE INDOOR AIR POLLUTION PRECIOUS METALS SILVER COMPOUNDS TEMPERATURE VOLATILE ORGANIC COMPOUNDS CALCIUM CARBONATE FORMALDEHYDE HYDROGEN MANGANESE DIOXIDE METAL OXYGEN SILVER FORMALDEHYDE MANGANESE DERIVATIVE MANGANESE DIOXIDE OXIDE SILVER BIMETALLIC CATALYSTS BIOWASTES EGG-SHELL CATALYSTS EGGSHELL WASTES GAS HOURLY SPACE VELOCITIES GASEOUS FORMALDEHYDE INDOOR AIR LOWS-TEMPERATURES OXIDATIVE REMOVALS SOLID BIOWASTE CATALYST EGGSHELL FORMALDEHYDE INDOOR AIR LOW TEMPERATURE OXIDATION OXIDATIVE STRESS POLLUTANT REMOVAL SILVER SOLID WASTE VOLATILE ORGANIC COMPOUND WASTE MANAGEMENT AMBIENT AIR ARTICLE CATALYSIS CATALYST EGG SHELL LOW TEMPERATURE OXIDATION REDUCTION (CHEMISTRY) STEADY STATE SYNERGISTIC EFFECT ANIMAL CHEMISTRY EGG SHELL GAS OXIDATIVE STRESS TEMPERATURE MANGANESE OXIDE |
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| Описание |
Under dark/low temperature (DLT) conditions, the oxidative removal of gaseous formaldehyde (FA) was studied using eggshell waste supported silver (Ag)-manganese dioxide (MnO2) bimetallic catalysts. To assess the synergistic effects between the two different metals, 0.03%-Ag-(0.5–5%)-MnO2/Eggshell catalysts were prepared and employed for DLT-oxidation of FA. The steady-state FA oxidation reaction rate (mmol g-1 h-1), when measured using 100 ppm FA at 80 °C (gas hourly space velocity (GHSV) of 5308 h-1), varied as follows: Ag-1.5%-MnO2/Eggshell-R (9.4) > Ag-3%-MnO2/Eggshell-R (8.1) > Ag-1.5%-MnO2/Eggshell (7.5) > Ag-5%-MnO2/Eggshell-R (7.2) > Ag-1.5%-MnO2/CaCO3-R (6.8) > MnO2-R (6) > Ag-0.5%-MnO2/Eggshell-R (3.2) > Ag/Eggshell-R (2.6). (Here, ‘R’ denotes hydrogen-based thermochemical reduction pretreatment.) The temperature required for 90% FA conversion (T90) at the same GHSV exhibited a contrary ordering: Ag/Eggshell-R (175 °C) > Ag-0.5%-MnO2/Eggshell-R (123 °C) > Ag-5%-MnO2/Eggshell-R (113 °C) > MnO2-R (99 °C) > Ag-1.5%-MnO2/Eggshell (96 °C) > Ag-3%-MnO2/Eggshell-R (93 °C) > Ag-1.5%-MnO2/Eggshell-R (77 °C). The eggshell catalyst outperformed the ones made of commercial calcium carbonate due to the presence of defects in the former. The MnO2 co-catalyst enhances the catalytic activities through the capture and activation of atmospheric oxygen (O2) with rapid catalytic regeneration. Also, MnO2 favorably captures the hydrogen of the adsorbed FA molecules to make the oxidation pathway thermodynamically more favorable. © 2022 Elsevier B.V.
Ministry of Science National Research Foundation of Korea, NRF Universiteit Gent Ministry of Science and ICT, South Korea, MSIT, (2021R1A3B1068304) This work was supported by a grant from the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ITC (MSIT) of the Korean government (Grant No: 2021R1A3B1068304 ). P.M.H. would like to thank the Research and Development Program of Ghent University Global Campus (GUGC), Korea. |
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| Дата |
2024-04-08T11:06:01Z
2024-04-08T11:06:01Z 2022 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
Vikrant, K, Kim, KH, Dong, F, Heynderickx, PM & Boukhvalov, DW 2022, 'Low-temperature oxidative removal of gaseous formaldehyde by an eggshell waste supported silver-manganese dioxide bimetallic catalyst with ultralow noble metal content', Journal of Hazardous Materials, Том. 434, 128857. https://doi.org/10.1016/j.jhazmat.2022.128857
Vikrant, K., Kim, K. H., Dong, F., Heynderickx, P. M., & Boukhvalov, D. W. (2022). Low-temperature oxidative removal of gaseous formaldehyde by an eggshell waste supported silver-manganese dioxide bimetallic catalyst with ultralow noble metal content. Journal of Hazardous Materials, 434, [128857]. https://doi.org/10.1016/j.jhazmat.2022.128857 0304-3894 Final All Open Access; Green Open Access https://biblio.ugent.be/publication/8749525/file/01GWH2KBC8T57551KXF40CBAYF.pdf https://biblio.ugent.be/publication/8749525/file/01GWH2KBC8T57551KXF40CBAYF.pdf http://elar.urfu.ru/handle/10995/131255 10.1016/j.jhazmat.2022.128857 85128204874 000793534300002 |
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| Язык |
en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
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| Формат |
application/pdf
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| Издатель |
Elsevier B.V.
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| Источник |
Journal of Hazardous Materials
Journal of Hazardous Materials |
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